6dad0e340aMake repository.id optional by: - Removing 'id' from required fields in JSON schema - Adding omitempty tags to Go model structs - Updating examples to show simpler format without id This fixes publishing failures where the publisher tool doesn't generate repository.id but the schema requires it. Fixes #179 🤖 Generated with [Claude Code](https://claude.ai/code) Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com> Co-authored-by: adam jones <domdomegg@users.noreply.github.com>
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Server JSON Examples
Basic Server with NPM Package
{
"name": "io.modelcontextprotocol/brave-search",
"description": "MCP server for Brave Search API integration",
"status": "active",
"repository": {
"url": "https://github.com/modelcontextprotocol/servers",
"source": "github"
},
"version_detail": {
"version": "1.0.2"
},
"packages": [
{
"registry_name": "npm",
"name": "@modelcontextprotocol/server-brave-search",
"version": "1.0.2",
"environment_variables": [
{
"name": "BRAVE_API_KEY",
"description": "Brave Search API Key",
"is_required": true,
"is_secret": true
}
]
}
]
}
Constant (fixed) arguments needed to start the MCP server
Suppose your MCP server application requires a mcp start CLI arguments to start in MCP server mode. Express these as positional arguments like this:
{
"name": "Knapcode.SampleMcpServer",
"description": "Sample NuGet MCP server for a random number and random weather",
"version_detail": {
"version": "0.4.0-beta"
},
"packages": [
{
"registry_name": "nuget",
"name": "Knapcode.SampleMcpServer",
"version": "0.4.0-beta",
"package_arguments": [
{
"type": "positional",
"value": "mcp"
},
{
"type": "positional",
"value": "start"
}
]
}
]
}
This will essentially instruct the MCP client to execute dnx Knapcode.SampleMcpServer@0.4.0-beta -- mcp start instead of the default dnx Knapcode.SampleMcpServer@0.4.0-beta (when no package_arguments are provided).
Filesystem Server with Multiple Packages
{
"name": "io.modelcontextprotocol/filesystem",
"description": "Node.js server implementing Model Context Protocol (MCP) for filesystem operations.",
"status": "active",
"repository": {
"url": "https://github.com/modelcontextprotocol/servers",
"source": "github",
"id": "b94b5f7e-c7c6-d760-2c78-a5e9b8a5b8c9"
},
"version_detail": {
"version": "1.0.2"
},
"packages": [
{
"registry_name": "npm",
"name": "@modelcontextprotocol/server-filesystem",
"version": "1.0.2",
"package_arguments": [
{
"type": "positional",
"value_hint": "target_dir",
"description": "Path to access",
"default": "/Users/username/Desktop",
"is_required": true,
"is_repeated": true
}
],
"environment_variables": [
{
"name": "LOG_LEVEL",
"description": "Logging level (debug, info, warn, error)",
"default": "info"
}
]
},
{
"registry_name": "docker",
"name": "mcp/filesystem",
"version": "1.0.2",
"runtime_arguments": [
{
"type": "named",
"description": "Mount a volume into the container",
"name": "--mount",
"value": "type=bind,src={source_path},dst={target_path}",
"is_required": true,
"is_repeated": true,
"variables": {
"source_path": {
"description": "Source path on host",
"format": "filepath",
"is_required": true
},
"target_path": {
"description": "Path to mount in the container. It should be rooted in `/project` directory.",
"is_required": true,
"default": "/project"
}
}
}
],
"package_arguments": [
{
"type": "positional",
"value_hint": "target_dir",
"value": "/project"
}
],
"environment_variables": [
{
"name": "LOG_LEVEL",
"description": "Logging level (debug, info, warn, error)",
"default": "info"
}
]
}
]
}
Remote Server Example
{
"name": "Remote Filesystem Server",
"description": "Cloud-hosted MCP filesystem server",
"repository": {
"url": "https://github.com/example/remote-fs",
"source": "github",
"id": "xyz789ab-cdef-0123-4567-890ghijklmno"
},
"version_detail": {
"version": "2.0.0"
},
"remotes": [
{
"transport_type": "sse",
"url": "https://mcp-fs.example.com/sse"
}
]
}
Python Package Example
{
"name": "weather-mcp-server",
"description": "Python MCP server for weather data access",
"repository": {
"url": "https://github.com/example/weather-mcp",
"source": "github",
"id": "def456gh-ijkl-7890-mnop-qrstuvwxyz12"
},
"version_detail": {
"version": "0.5.0"
},
"packages": [
{
"registry_name": "pypi",
"name": "weather-mcp-server",
"version": "0.5.0",
"runtime_hint": "uvx",
"environment_variables": [
{
"name": "WEATHER_API_KEY",
"description": "API key for weather service",
"is_required": true,
"is_secret": true
},
{
"name": "WEATHER_UNITS",
"description": "Temperature units (celsius, fahrenheit)",
"default": "celsius"
}
]
}
]
}
NuGet (.NET) Package Example
The dnx tool ships with the .NET 10 SDK, starting with Preview 6.
{
"name": "Knapcode.SampleMcpServer",
"description": "Sample NuGet MCP server for a random number and random weather",
"repository": {
"url": "https://github.com/joelverhagen/Knapcode.SampleMcpServer",
"source": "github",
"id": "example-nuget-id-0000-1111-222222222222"
},
"version_detail": {
"version": "0.5.0"
},
"packages": [
{
"registry_name": "nuget",
"name": "Knapcode.SampleMcpServer",
"version": "0.5.0",
"runtime_hint": "dnx",
"environment_variables": [
{
"name": "WEATHER_CHOICES",
"description": "Comma separated list of weather descriptions to randomly select.",
"is_required": true,
"is_secret": false
}
]
}
]
}
Complex Docker Server with Multiple Arguments
{
"name": "mcp-database-manager",
"description": "MCP server for database operations with support for multiple database types",
"repository": {
"url": "https://github.com/example/mcp-database",
"source": "github",
"id": "ghi789jk-lmno-1234-pqrs-tuvwxyz56789"
},
"version_detail": {
"version": "3.1.0"
},
"packages": [
{
"registry_name": "docker",
"name": "mcp/database-manager",
"version": "3.1.0",
"runtime_arguments": [
{
"type": "named",
"name": "--network",
"value": "host",
"description": "Use host network mode"
},
{
"type": "named",
"name": "-e",
"value": "DB_TYPE={db_type}",
"description": "Database type to connect to",
"is_repeated": true,
"variables": {
"db_type": {
"description": "Type of database",
"choices": ["postgres", "mysql", "mongodb", "redis"],
"is_required": true
}
}
}
],
"package_arguments": [
{
"type": "named",
"name": "--host",
"description": "Database host",
"default": "localhost",
"is_required": true
},
{
"type": "named",
"name": "--port",
"description": "Database port",
"format": "number"
},
{
"type": "positional",
"value_hint": "database_name",
"description": "Name of the database to connect to",
"is_required": true
}
],
"environment_variables": [
{
"name": "DB_USERNAME",
"description": "Database username",
"is_required": true
},
{
"name": "DB_PASSWORD",
"description": "Database password",
"is_required": true,
"is_secret": true
},
{
"name": "SSL_MODE",
"description": "SSL connection mode",
"default": "prefer",
"choices": ["disable", "prefer", "require"]
}
]
}
]
}
Server with Remote and Package Options
{
"name": "hybrid-mcp-server",
"description": "MCP server available as both local package and remote service",
"repository": {
"url": "https://github.com/example/hybrid-mcp",
"source": "github",
"id": "klm012no-pqrs-3456-tuvw-xyz789abcdef"
},
"version_detail": {
"version": "1.5.0"
},
"packages": [
{
"registry_name": "npm",
"name": "@example/hybrid-mcp-server",
"version": "1.5.0",
"runtime_hint": "npx",
"package_arguments": [
{
"type": "named",
"name": "--mode",
"description": "Operation mode",
"default": "local",
"choices": ["local", "cached", "proxy"]
}
]
}
],
"remotes": [
{
"transport_type": "sse",
"url": "https://hybrid-mcp.example.com/sse",
"headers": [
{
"name": "X-API-Key",
"description": "API key for authentication",
"is_required": true,
"is_secret": true
},
{
"name": "X-Region",
"description": "Service region",
"default": "us-east-1",
"choices": ["us-east-1", "eu-west-1", "ap-southeast-1"]
}
]
},
{
"transport_type": "streamable",
"url": "https://hybrid-mcp.example.com/stream"
}
]
}
Deprecated Server Example
{
"name": "io.legacy/old-weather-server",
"description": "Legacy weather server - DEPRECATED: Use weather-v2 instead for new projects",
"status": "deprecated",
"repository": {
"url": "https://github.com/example/old-weather",
"source": "github",
"id": "legacy-abc123-def456-789012-345678-901234567890"
},
"version_detail": {
"version": "0.9.5"
},
"packages": [
{
"registry_name": "npm",
"name": "@legacy/old-weather-server",
"version": "0.9.5",
"environment_variables": [
{
"name": "WEATHER_API_KEY",
"description": "Weather API key",
"is_required": true,
"is_secret": true
}
]
}
]
}