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feat!: align metadata models with draft schema (#993)

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Dale Seo 2026-07-15 08:58:46 -04:00 • committed by GitHub
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4 changed files with 2539 additions and 1059 deletions
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401
crates/rmcp/tests/test_message_schema/client_json_rpc_message_schema.json
View file

@ -86,11 +86,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -128,11 +131,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"arguments": {
"description": "Arguments to pass to the tool (must match the tool's input schema)",
@ -187,11 +193,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"taskId": {
"type": "string"
@ -210,11 +219,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"reason": {
"type": [
@ -334,11 +346,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"argument": {
"$ref": "#/definitions/ArgumentInfo"
@ -474,11 +489,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"description": "The actual content of the message (text, image, audio, tool use, or tool result)",
@ -550,11 +568,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this result.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"action": {
"description": "The user's decision on how to handle the elicitation request",
@ -638,11 +659,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -727,11 +751,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"arguments": {
"type": [
@ -773,11 +800,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"taskId": {
"type": "string"
@ -797,11 +827,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"taskId": {
"type": "string"
@ -873,11 +906,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -952,11 +988,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"capabilities": {
"description": "The capabilities this client supports (sampling, roots, etc.)",
@ -1169,11 +1208,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"roots": {
"type": "array",
@ -1212,6 +1254,11 @@
"emergency"
]
},
"MetaObject": {
"description": "See [specification/draft/basic/index#general-fields] for notes on _meta usage.",
"type": "object",
"additionalProperties": true
},
"Notification": {
"type": "object",
"properties": {
@ -1257,6 +1304,16 @@
"params"
]
},
"NotificationMetaObject": {
"description": "Metadata reserved by MCP on notifications. Extension keys are also allowed.",
"type": "object",
"properties": {
"io.modelcontextprotocol/subscriptionId": {
"$ref": "#/definitions/NumberOrString"
}
},
"additionalProperties": true
},
"NotificationNoParam": {
"type": "object",
"properties": {
@ -1294,11 +1351,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"cursor": {
"type": [
@ -1322,11 +1382,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"message": {
"description": "An optional message describing the current progress.",
@ -1397,11 +1460,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"inputResponses": {
"description": "Client responses to server-initiated input requests from a previous\n[`InputRequiredResult`].",
@ -1641,6 +1707,28 @@
"params"
]
},
"RequestMetaObject": {
"description": "Metadata reserved by MCP on requests. Extension keys are also allowed.",
"type": "object",
"properties": {
"io.modelcontextprotocol/clientCapabilities": {
"$ref": "#/definitions/ClientCapabilities"
},
"io.modelcontextprotocol/clientInfo": {
"$ref": "#/definitions/Implementation"
},
"io.modelcontextprotocol/logLevel": {
"$ref": "#/definitions/LoggingLevel"
},
"io.modelcontextprotocol/protocolVersion": {
"type": "string"
},
"progressToken": {
"$ref": "#/definitions/ProgressToken"
}
},
"additionalProperties": true
},
"RequestNoParam": {
"type": "object",
"properties": {
@ -1763,11 +1851,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this resource.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this resource.",
@ -1841,11 +1932,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"mimeType": {
"type": [
@ -1869,11 +1963,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"blob": {
"type": "string"
@ -1925,11 +2022,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"name": {
"type": [
@ -2116,11 +2216,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"level": {
"description": "The desired logging level",
@ -2147,11 +2250,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"uri": {
"description": "The URI of the resource to subscribe to",
@ -2252,11 +2358,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"createdAt": {
"description": "ISO-8601 creation timestamp.",
@ -2347,11 +2456,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -2378,11 +2490,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"type": "array",
@ -2412,11 +2527,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"id": {
"type": "string"
@ -2459,11 +2577,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"uri": {
"description": "The URI of the resource to unsubscribe from",

401
crates/rmcp/tests/test_message_schema/client_json_rpc_message_schema_current.json
View file

@ -86,11 +86,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -128,11 +131,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"arguments": {
"description": "Arguments to pass to the tool (must match the tool's input schema)",
@ -187,11 +193,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"taskId": {
"type": "string"
@ -210,11 +219,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"reason": {
"type": [
@ -334,11 +346,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"argument": {
"$ref": "#/definitions/ArgumentInfo"
@ -474,11 +489,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"description": "The actual content of the message (text, image, audio, tool use, or tool result)",
@ -550,11 +568,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this result.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"action": {
"description": "The user's decision on how to handle the elicitation request",
@ -638,11 +659,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -727,11 +751,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"arguments": {
"type": [
@ -773,11 +800,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"taskId": {
"type": "string"
@ -797,11 +827,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"taskId": {
"type": "string"
@ -873,11 +906,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -952,11 +988,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"capabilities": {
"description": "The capabilities this client supports (sampling, roots, etc.)",
@ -1169,11 +1208,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"roots": {
"type": "array",
@ -1212,6 +1254,11 @@
"emergency"
]
},
"MetaObject": {
"description": "See [specification/draft/basic/index#general-fields] for notes on _meta usage.",
"type": "object",
"additionalProperties": true
},
"Notification": {
"type": "object",
"properties": {
@ -1257,6 +1304,16 @@
"params"
]
},
"NotificationMetaObject": {
"description": "Metadata reserved by MCP on notifications. Extension keys are also allowed.",
"type": "object",
"properties": {
"io.modelcontextprotocol/subscriptionId": {
"$ref": "#/definitions/NumberOrString"
}
},
"additionalProperties": true
},
"NotificationNoParam": {
"type": "object",
"properties": {
@ -1294,11 +1351,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"cursor": {
"type": [
@ -1322,11 +1382,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"message": {
"description": "An optional message describing the current progress.",
@ -1397,11 +1460,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"inputResponses": {
"description": "Client responses to server-initiated input requests from a previous\n[`InputRequiredResult`].",
@ -1641,6 +1707,28 @@
"params"
]
},
"RequestMetaObject": {
"description": "Metadata reserved by MCP on requests. Extension keys are also allowed.",
"type": "object",
"properties": {
"io.modelcontextprotocol/clientCapabilities": {
"$ref": "#/definitions/ClientCapabilities"
},
"io.modelcontextprotocol/clientInfo": {
"$ref": "#/definitions/Implementation"
},
"io.modelcontextprotocol/logLevel": {
"$ref": "#/definitions/LoggingLevel"
},
"io.modelcontextprotocol/protocolVersion": {
"type": "string"
},
"progressToken": {
"$ref": "#/definitions/ProgressToken"
}
},
"additionalProperties": true
},
"RequestNoParam": {
"type": "object",
"properties": {
@ -1763,11 +1851,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this resource.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this resource.",
@ -1841,11 +1932,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"mimeType": {
"type": [
@ -1869,11 +1963,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"blob": {
"type": "string"
@ -1925,11 +2022,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"name": {
"type": [
@ -2116,11 +2216,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"level": {
"description": "The desired logging level",
@ -2147,11 +2250,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"uri": {
"description": "The URI of the resource to subscribe to",
@ -2252,11 +2358,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"createdAt": {
"description": "ISO-8601 creation timestamp.",
@ -2347,11 +2456,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -2378,11 +2490,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"type": "array",
@ -2412,11 +2527,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"id": {
"type": "string"
@ -2459,11 +2577,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"uri": {
"description": "The URI of the resource to unsubscribe from",

664
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json
View file

@ -76,11 +76,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -171,11 +174,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this result",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"description": "The content returned by the tool (text, images, etc.)",
@ -211,11 +217,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"createdAt": {
"description": "ISO-8601 creation timestamp.",
@ -279,11 +288,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"reason": {
"type": [
@ -303,15 +315,89 @@
}
}
},
"CompleteResult": {
"ClientCapabilities": {
"title": "Builder",
"description": "```rust\n# use rmcp::model::ClientCapabilities;\nlet cap = ClientCapabilities::builder()\n .enable_experimental()\n .build();\n```",
"type": "object",
"properties": {
"_meta": {
"elicitation": {
"description": "Capability to handle elicitation requests from servers for interactive user input",
"anyOf": [
{
"$ref": "#/definitions/ElicitationCapability"
},
{
"type": "null"
}
]
},
"experimental": {
"type": [
"object",
"null"
],
"additionalProperties": true
"additionalProperties": {
"type": "object",
"additionalProperties": true
}
},
"extensions": {
"description": "Optional MCP extensions that the client supports (SEP-1724).\nKeys are extension identifiers (e.g., `\"io.modelcontextprotocol/ui\"`),\nvalues are per-extension settings objects. An empty object indicates\nsupport with no settings.",
"type": [
"object",
"null"
],
"additionalProperties": {
"type": "object",
"additionalProperties": true
}
},
"roots": {
"description": "Capability for filesystem roots (deprecated by SEP-2577).",
"anyOf": [
{
"$ref": "#/definitions/RootsCapabilities"
},
{
"type": "null"
}
]
},
"sampling": {
"description": "Capability for LLM sampling requests (SEP-1577, deprecated by SEP-2577).",
"anyOf": [
{
"$ref": "#/definitions/SamplingCapability"
},
{
"type": "null"
}
]
},
"tasks": {
"anyOf": [
{
"$ref": "#/definitions/TasksCapability"
},
{
"type": "null"
}
]
}
}
},
"CompleteResult": {
"type": "object",
"properties": {
"_meta": {
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"completion": {
"$ref": "#/definitions/CompletionInfo"
@ -495,11 +581,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"includeContext": {
"description": "How much context to include from MCP servers",
@ -608,11 +697,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"task": {
"$ref": "#/definitions/Task"
@ -658,11 +750,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"message": {
"type": "string"
@ -685,11 +780,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"elicitationId": {
"type": "string"
@ -716,11 +814,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"message": {
"type": "string"
@ -742,11 +843,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this result.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"action": {
"description": "The user's decision on how to handle the elicitation request",
@ -784,6 +888,34 @@
}
]
},
"ElicitationCapability": {
"description": "Elicitation allows servers to request interactive input from users during tool execution.\nThis capability indicates that a client can handle elicitation requests and present\nappropriate UI to users for collecting the requested information.",
"type": "object",
"properties": {
"form": {
"description": "Whether client supports form-based elicitation.",
"anyOf": [
{
"$ref": "#/definitions/FormElicitationCapability"
},
{
"type": "null"
}
]
},
"url": {
"description": "Whether client supports URL-based elicitation.",
"anyOf": [
{
"$ref": "#/definitions/UrlElicitationCapability"
},
{
"type": "null"
}
]
}
}
},
"ElicitationCreateRequestMethod": {
"type": "string",
"format": "const",
@ -856,11 +988,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -935,15 +1070,31 @@
"message"
]
},
"FormElicitationCapability": {
"description": "Capability for handling elicitation requests from servers.\nElicitation allows servers to request interactive input from users during tool execution.\nThis capability indicates that a client can handle elicitation requests and present\nappropriate UI to users for collecting the requested information.\n\nCapability for form mode elicitation.",
"type": "object",
"properties": {
"schemaValidation": {
"description": "Whether the client supports JSON Schema validation for elicitation responses.\nWhen true, the client will validate user input against the requested_schema\nbefore sending the response back to the server.",
"type": [
"boolean",
"null"
]
}
}
},
"GetPromptResult": {
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"description": {
"type": [
@ -979,11 +1130,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"createdAt": {
"description": "ISO-8601 creation timestamp.",
@ -1100,11 +1254,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -1178,11 +1335,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"capabilities": {
"description": "The capabilities this server provides (tools, resources, prompts, etc.)",
@ -1257,11 +1417,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"inputRequests": {
"description": "Server-initiated requests that the client must fulfill before retrying.",
@ -1524,11 +1687,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -1580,11 +1746,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -1636,11 +1805,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -1697,11 +1869,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"nextCursor": {
"type": [
@ -1724,11 +1899,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -1801,11 +1979,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"data": {
"description": "The actual log data"
@ -1832,6 +2013,11 @@
"data"
]
},
"MetaObject": {
"description": "See [specification/draft/basic/index#general-fields] for notes on _meta usage.",
"type": "object",
"additionalProperties": true
},
"ModelHint": {
"description": "A hint suggesting a preferred model name or family.\n\nModel hints are advisory suggestions that help clients choose appropriate\nmodels. They can be specific model names or general families like \"claude\" or \"gpt\".",
"type": "object",
@ -1973,6 +2159,16 @@
"params"
]
},
"NotificationMetaObject": {
"description": "Metadata reserved by MCP on notifications. Extension keys are also allowed.",
"type": "object",
"properties": {
"io.modelcontextprotocol/subscriptionId": {
"$ref": "#/definitions/NumberOrString"
}
},
"additionalProperties": true
},
"NotificationNoParam": {
"type": "object",
"properties": {
@ -2140,11 +2336,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"message": {
"description": "An optional message describing the current progress.",
@ -2188,11 +2387,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"arguments": {
"type": [
@ -2303,11 +2505,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -2382,6 +2587,28 @@
"params"
]
},
"RequestMetaObject": {
"description": "Metadata reserved by MCP on requests. Extension keys are also allowed.",
"type": "object",
"properties": {
"io.modelcontextprotocol/clientCapabilities": {
"$ref": "#/definitions/ClientCapabilities"
},
"io.modelcontextprotocol/clientInfo": {
"$ref": "#/definitions/Implementation"
},
"io.modelcontextprotocol/logLevel": {
"$ref": "#/definitions/LoggingLevel"
},
"io.modelcontextprotocol/protocolVersion": {
"type": "string"
},
"progressToken": {
"$ref": "#/definitions/ProgressToken"
}
},
"additionalProperties": true
},
"RequestNoParam": {
"type": "object",
"properties": {
@ -2410,11 +2637,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this resource.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this resource.",
@ -2488,11 +2718,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"mimeType": {
"type": [
@ -2516,11 +2749,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"blob": {
"type": "string"
@ -2553,11 +2789,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this resource template.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this template.",
@ -2625,11 +2864,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"uri": {
"description": "The URI of the resource that was updated",
@ -2676,6 +2918,40 @@
}
]
},
"RootsCapabilities": {
"description": "Roots capability. Deprecated by SEP-2577; remains functional and will be\nremoved in a future release.\nSee <https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2577>.",
"type": "object",
"properties": {
"listChanged": {
"type": [
"boolean",
"null"
]
}
}
},
"SamplingCapability": {
"description": "Sampling capability with optional sub-capabilities (SEP-1577).\n\nDeprecated by SEP-2577; remains functional and will be removed in a future\nrelease.\nSee <https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2577>.",
"type": "object",
"properties": {
"context": {
"description": "Support for `includeContext` (soft-deprecated)",
"type": [
"object",
"null"
],
"additionalProperties": true
},
"tools": {
"description": "Support for `tools` and `toolChoice` parameters",
"type": [
"object",
"null"
],
"additionalProperties": true
}
}
},
"SamplingContent": {
"description": "Single or array content wrapper (SEP-1577).",
"anyOf": [
@ -2695,11 +2971,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"description": "The actual content of the message (text, image, audio, tool use, or tool result)",
@ -3226,11 +3505,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"createdAt": {
"description": "ISO-8601 creation timestamp.",
@ -3341,11 +3623,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -3478,11 +3763,14 @@
"properties": {
"_meta": {
"description": "Optional additional metadata for this tool",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional additional tool information.",
@ -3658,11 +3946,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"type": "array",
@ -3692,11 +3983,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"id": {
"type": "string"
@ -3848,6 +4142,10 @@
"type",
"enum"
]
},
"UrlElicitationCapability": {
"description": "Capability for URL mode elicitation.",
"type": "object"
}
}
}

664
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json
View file

@ -76,11 +76,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -171,11 +174,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this result",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"description": "The content returned by the tool (text, images, etc.)",
@ -211,11 +217,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"createdAt": {
"description": "ISO-8601 creation timestamp.",
@ -279,11 +288,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"reason": {
"type": [
@ -303,15 +315,89 @@
}
}
},
"CompleteResult": {
"ClientCapabilities": {
"title": "Builder",
"description": "```rust\n# use rmcp::model::ClientCapabilities;\nlet cap = ClientCapabilities::builder()\n .enable_experimental()\n .build();\n```",
"type": "object",
"properties": {
"_meta": {
"elicitation": {
"description": "Capability to handle elicitation requests from servers for interactive user input",
"anyOf": [
{
"$ref": "#/definitions/ElicitationCapability"
},
{
"type": "null"
}
]
},
"experimental": {
"type": [
"object",
"null"
],
"additionalProperties": true
"additionalProperties": {
"type": "object",
"additionalProperties": true
}
},
"extensions": {
"description": "Optional MCP extensions that the client supports (SEP-1724).\nKeys are extension identifiers (e.g., `\"io.modelcontextprotocol/ui\"`),\nvalues are per-extension settings objects. An empty object indicates\nsupport with no settings.",
"type": [
"object",
"null"
],
"additionalProperties": {
"type": "object",
"additionalProperties": true
}
},
"roots": {
"description": "Capability for filesystem roots (deprecated by SEP-2577).",
"anyOf": [
{
"$ref": "#/definitions/RootsCapabilities"
},
{
"type": "null"
}
]
},
"sampling": {
"description": "Capability for LLM sampling requests (SEP-1577, deprecated by SEP-2577).",
"anyOf": [
{
"$ref": "#/definitions/SamplingCapability"
},
{
"type": "null"
}
]
},
"tasks": {
"anyOf": [
{
"$ref": "#/definitions/TasksCapability"
},
{
"type": "null"
}
]
}
}
},
"CompleteResult": {
"type": "object",
"properties": {
"_meta": {
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"completion": {
"$ref": "#/definitions/CompletionInfo"
@ -495,11 +581,14 @@
"properties": {
"_meta": {
"description": "Protocol-level metadata for this request (SEP-1319)",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"includeContext": {
"description": "How much context to include from MCP servers",
@ -608,11 +697,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"task": {
"$ref": "#/definitions/Task"
@ -658,11 +750,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"message": {
"type": "string"
@ -685,11 +780,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"elicitationId": {
"type": "string"
@ -716,11 +814,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/RequestMetaObject"
},
{
"type": "null"
}
]
},
"message": {
"type": "string"
@ -742,11 +843,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this result.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"action": {
"description": "The user's decision on how to handle the elicitation request",
@ -784,6 +888,34 @@
}
]
},
"ElicitationCapability": {
"description": "Elicitation allows servers to request interactive input from users during tool execution.\nThis capability indicates that a client can handle elicitation requests and present\nappropriate UI to users for collecting the requested information.",
"type": "object",
"properties": {
"form": {
"description": "Whether client supports form-based elicitation.",
"anyOf": [
{
"$ref": "#/definitions/FormElicitationCapability"
},
{
"type": "null"
}
]
},
"url": {
"description": "Whether client supports URL-based elicitation.",
"anyOf": [
{
"$ref": "#/definitions/UrlElicitationCapability"
},
{
"type": "null"
}
]
}
}
},
"ElicitationCreateRequestMethod": {
"type": "string",
"format": "const",
@ -856,11 +988,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -935,15 +1070,31 @@
"message"
]
},
"FormElicitationCapability": {
"description": "Capability for handling elicitation requests from servers.\nElicitation allows servers to request interactive input from users during tool execution.\nThis capability indicates that a client can handle elicitation requests and present\nappropriate UI to users for collecting the requested information.\n\nCapability for form mode elicitation.",
"type": "object",
"properties": {
"schemaValidation": {
"description": "Whether the client supports JSON Schema validation for elicitation responses.\nWhen true, the client will validate user input against the requested_schema\nbefore sending the response back to the server.",
"type": [
"boolean",
"null"
]
}
}
},
"GetPromptResult": {
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"description": {
"type": [
@ -979,11 +1130,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"createdAt": {
"description": "ISO-8601 creation timestamp.",
@ -1100,11 +1254,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -1178,11 +1335,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"capabilities": {
"description": "The capabilities this server provides (tools, resources, prompts, etc.)",
@ -1257,11 +1417,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"inputRequests": {
"description": "Server-initiated requests that the client must fulfill before retrying.",
@ -1524,11 +1687,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -1580,11 +1746,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -1636,11 +1805,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -1697,11 +1869,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"nextCursor": {
"type": [
@ -1724,11 +1899,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -1801,11 +1979,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"data": {
"description": "The actual log data"
@ -1832,6 +2013,11 @@
"data"
]
},
"MetaObject": {
"description": "See [specification/draft/basic/index#general-fields] for notes on _meta usage.",
"type": "object",
"additionalProperties": true
},
"ModelHint": {
"description": "A hint suggesting a preferred model name or family.\n\nModel hints are advisory suggestions that help clients choose appropriate\nmodels. They can be specific model names or general families like \"claude\" or \"gpt\".",
"type": "object",
@ -1973,6 +2159,16 @@
"params"
]
},
"NotificationMetaObject": {
"description": "Metadata reserved by MCP on notifications. Extension keys are also allowed.",
"type": "object",
"properties": {
"io.modelcontextprotocol/subscriptionId": {
"$ref": "#/definitions/NumberOrString"
}
},
"additionalProperties": true
},
"NotificationNoParam": {
"type": "object",
"properties": {
@ -2140,11 +2336,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"message": {
"description": "An optional message describing the current progress.",
@ -2188,11 +2387,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"arguments": {
"type": [
@ -2303,11 +2505,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"cacheScope": {
"description": "Scope describing who may cache this result (SEP-2549).\nRequired by spec version 2026-07-28, but optional here to maintain compatibility\nwith older spec versions.",
@ -2382,6 +2587,28 @@
"params"
]
},
"RequestMetaObject": {
"description": "Metadata reserved by MCP on requests. Extension keys are also allowed.",
"type": "object",
"properties": {
"io.modelcontextprotocol/clientCapabilities": {
"$ref": "#/definitions/ClientCapabilities"
},
"io.modelcontextprotocol/clientInfo": {
"$ref": "#/definitions/Implementation"
},
"io.modelcontextprotocol/logLevel": {
"$ref": "#/definitions/LoggingLevel"
},
"io.modelcontextprotocol/protocolVersion": {
"type": "string"
},
"progressToken": {
"$ref": "#/definitions/ProgressToken"
}
},
"additionalProperties": true
},
"RequestNoParam": {
"type": "object",
"properties": {
@ -2410,11 +2637,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this resource.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this resource.",
@ -2488,11 +2718,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"mimeType": {
"type": [
@ -2516,11 +2749,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"blob": {
"type": "string"
@ -2553,11 +2789,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this resource template.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this template.",
@ -2625,11 +2864,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"uri": {
"description": "The URI of the resource that was updated",
@ -2676,6 +2918,40 @@
}
]
},
"RootsCapabilities": {
"description": "Roots capability. Deprecated by SEP-2577; remains functional and will be\nremoved in a future release.\nSee <https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2577>.",
"type": "object",
"properties": {
"listChanged": {
"type": [
"boolean",
"null"
]
}
}
},
"SamplingCapability": {
"description": "Sampling capability with optional sub-capabilities (SEP-1577).\n\nDeprecated by SEP-2577; remains functional and will be removed in a future\nrelease.\nSee <https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2577>.",
"type": "object",
"properties": {
"context": {
"description": "Support for `includeContext` (soft-deprecated)",
"type": [
"object",
"null"
],
"additionalProperties": true
},
"tools": {
"description": "Support for `tools` and `toolChoice` parameters",
"type": [
"object",
"null"
],
"additionalProperties": true
}
}
},
"SamplingContent": {
"description": "Single or array content wrapper (SEP-1577).",
"anyOf": [
@ -2695,11 +2971,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"description": "The actual content of the message (text, image, audio, tool use, or tool result)",
@ -3226,11 +3505,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/NotificationMetaObject"
},
{
"type": "null"
}
]
},
"createdAt": {
"description": "ISO-8601 creation timestamp.",
@ -3341,11 +3623,14 @@
"properties": {
"_meta": {
"description": "Optional protocol-level metadata for this content block.",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional annotations describing how the client should use this content.",
@ -3478,11 +3763,14 @@
"properties": {
"_meta": {
"description": "Optional additional metadata for this tool",
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"annotations": {
"description": "Optional additional tool information.",
@ -3658,11 +3946,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"content": {
"type": "array",
@ -3692,11 +3983,14 @@
"type": "object",
"properties": {
"_meta": {
"type": [
"object",
"null"
],
"additionalProperties": true
"anyOf": [
{
"$ref": "#/definitions/MetaObject"
},
{
"type": "null"
}
]
},
"id": {
"type": "string"
@ -3848,6 +4142,10 @@
"type",
"enum"
]
},
"UrlElicitationCapability": {
"description": "Capability for URL mode elicitation.",
"type": "object"
}
}
}