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registry/docs/reference/server-json/generic-server-json.md
Tadas Antanavicius 56e8b4879b
 Introduce serverId, rename id to versionId (#465) 
Wielded Claude Code to do this; across many iterations and have reviewed
all the code + largely rewritten the PR commentary here.

This PR implements the server ID consistency changes from
[#396](https://github.com/modelcontextprotocol/registry/issues/396). Our
goal is to:
- Rename `id` to `versionId` to make it clear that it is the ID for a
specific version, not a server
- Introduce `serverId` as a net new concept. This will be 1:1 with
`name`. While not strictly necessary (we could just use name as a PK),
the convention of having a UUID as an ID on our objects is just a
helpful subjective architecture decision. Plus also leaves open the door
to reconsidering the "should we allow renames" question.

## Key Changes

### 🗄️ Database Schema Changes
- **Renamed**: `id` column → `version_id` (unique identifier for each
server version)

### 📋 Metadata Structure Updates
- **JSON Schema**: Updated
`_meta.io.modelcontextprotocol.registry/official` to include:
  - `serverId`: Consistent ID across all versions of a server
  - `versionId`: Unique ID for this specific version (renamed from `id`)

### 🔧 API Endpoint Updates
- **New endpoint structure**: Changed from version-ID-based to
server-ID-based URLs:
  - `GET /v0/servers/{server_id}` - Get latest version of server
  - `GET /v0/servers/{server_id}?version=X.X.X` - Get specific version  
- `GET /v0/servers/{server_id}/versions` - List all versions of a server
  - `PUT /v0/servers/{server_id}?version=X.X.X` - Edit specific version
- **Consistent URL patterns**: All server endpoints now use `server_id`
as the primary identifier
 
### Database Migration Strategy
The migration (`005_add_server_id_rename_version_id.sql`):
1. Adds new `version_id` column  
2. Generates deterministic UUIDs for servers with the same name
3. Updates JSON metadata to add `serverId` and rename `id` to
`versionId`
4. Copies existing `id` values to `version_id` column
5. Drops old `id` column and makes `version_id` the new primary key

## Testing

Besides of course automated tests passing, I:
1. Set up my local db with the pre-005-migration state, imported all the
production data
2. Ran the migration
3. Spot checked some diffs of the data that resulted --

```json
// before
{
  "name": "io.github.ruvnet/ruv-swarm",
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "id": "0a9cda7f-2b73-4839-844b-6582f335de42",
      "is_latest": false,
      "updated_at": "2025-09-10T17:21:34.92137012Z",
      "published_at": "2025-09-10T17:15:32.69690433Z"
    }
  },
  "version": "1.0.18",
  "repository": {
    "url": "",
    "source": ""
  },
  "description": "Neural network swarm orchestration with WebAssembly acceleration and MCP integration"
}

// after
{
  "name": "io.github.ruvnet/ruv-swarm",
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "serverId": "e8538952-96af-4a33-9e31-7fbed012521e",
      "is_latest": false,
      "versionId": "0a9cda7f-2b73-4839-844b-6582f335de42",
      "updated_at": "2025-09-10T17:21:34.92137012Z",
      "published_at": "2025-09-10T17:15:32.69690433Z"
    }
  },
  "version": "1.0.18",
  "repository": {
    "url": "",
    "source": ""
  },
  "description": "Neural network swarm orchestration with WebAssembly acceleration and MCP integration"
}

```

Servers that have multiple versions stayed consistent in their
`serverId`:

```json
// First version
{
  "name": "app.getdialer/dialer",
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "serverId": "80f08bdb-f3e4-4f19-b072-1676ae49b663",
      "is_latest": false,
      "versionId": "04f25b17-331d-48d7-b08b-37baece208a7",
      "updated_at": "2025-09-09T00:16:49.162620072Z",
      "published_at": "2025-09-08T23:47:09.452137971Z"
    }
  },
  "status": "active",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json",
  "remotes": [
    {
      "url": "https://getdialer.app/mcp",
      "type": "streamable-http"
    },
    {
      "url": "https://getdialer.app/sse",
      "type": "sse"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "",
    "source": ""
  },
  "description": "An MCP server that provides your you make outbound phone calls using your own phone number"
}

// Second version
{
  "name": "app.getdialer/dialer",
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "serverId": "80f08bdb-f3e4-4f19-b072-1676ae49b663",
      "is_latest": true,
      "versionId": "faa26cb9-3aad-415e-aece-f715fff5fe5e",
      "updated_at": "2025-09-09T00:16:49.107842808Z",
      "published_at": "2025-09-09T00:16:49.107842808Z"
    }
  },
  "status": "active",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json",
  "remotes": [
    {
      "url": "https://getdialer.app/mcp",
      "type": "streamable-http"
    },
    {
      "url": "https://getdialer.app/sse",
      "type": "sse"
    }
  ],
  "version": "1.0.1",
  "repository": {
    "url": "",
    "source": ""
  },
  "description": "An MCP server that provides lets you make outbound phone calls using your own phone number"
}
```

And I also tried publishing a test server anew; looked good:

```bash
⏺ Bash(curl -s "http://localhost:8080/v0/servers/102dc4e4-6ca8-40e6-aa11-cd45763d3352" | jq '.')
  ⎿  {                                                                                             
       "$schema": "https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json",
       "name": "io.modelcontextprotocol.anonymous/test-claude-migration-server",
       "description": "A test server to verify the new migration and API endpoints work correctly",
       "status": "active",
       "repository": {
         "url": "https://github.com/example/test-claude-migration-server",
         "source": "github",
         "id": "example/test-claude-migration-server"
       },
       "version": "1.0.0",
       "_meta": {
         "io.modelcontextprotocol.registry/official": {
           "serverId": "102dc4e4-6ca8-40e6-aa11-cd45763d3352",
           "versionId": "48c9cd55-7bc4-4ac2-896e-59e81eb653e4",
           "published_at": "2025-09-12T18:33:23.264203-07:00",
           "updated_at": "2025-09-12T18:33:23.264203-07:00",
           "is_latest": true
         }
       }
     }

⏺ Bash(curl -s "http://localhost:8080/v0/servers/102dc4e4-6ca8-40e6-aa11-cd45763d3352/versions" | jq '.')
  ⎿  {                                                                                                 
       "servers": [
         {
           "$schema": "https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json",
           "name": "io.modelcontextprotocol.anonymous/test-claude-migration-server",
           "description": "A test server to verify the new migration and API endpoints work correctly",
           "status": "active",
           "repository": {
             "url": "https://github.com/example/test-claude-migration-server",
             "source": "github",
             "id": "example/test-claude-migration-server"
           },
           "version": "1.0.0",
           "_meta": {
             "io.modelcontextprotocol.registry/official": {
               "serverId": "102dc4e4-6ca8-40e6-aa11-cd45763d3352",
               "versionId": "48c9cd55-7bc4-4ac2-896e-59e81eb653e4",
               "published_at": "2025-09-12T18:33:23.264203-07:00",
               "updated_at": "2025-09-12T18:33:23.264203-07:00",
               "is_latest": true
             }
           }
         }
       ],
       "metadata": {
         "count": 1
       }
     }
```

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Preeti Dewani <preetidewani1990@gmail.com>
Co-authored-by: adam jones <adamj+git@anthropic.com>
Co-authored-by: Adam Jones <adamj@anthropic.com>
2025-09-21 15:00:09 +03:00

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# server.json Format Specification
A `server.json` file is a standardized way to describe MCP servers for registry publishing, client discovery, and package management.
Also see:
- For step-by-step instructions on creating and using server.json files, see the [publishing guide](../../guides/publishing/publish-server.md).
- For understanding the validation requirements when publishing to the official registry, see [official registry requirements](./official-registry-requirements.md).
## Browse the Complete Schema
**📋 View the full specification interactively**: Open [server.schema.json](./server.schema.json) in a schema viewer like [json-schema.app](https://json-schema.app/view/%23?url=https%3A%2F%2Fstatic.modelcontextprotocol.io%2Fschemas%2F2025-09-16%2Fserver.schema.json).
The schema contains all field definitions, validation rules, examples, and detailed descriptions.
The official registry has some more restrictions on top of this. See the [official registry requirements](./official-registry-requirements.md) for details.
## Examples
<!-- As a heads up, these are used as part of tests/integration/main.go -->
### Basic Server with NPM Package
```json
{
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
"name": "io.modelcontextprotocol.anonymous/brave-search",
"description": "MCP server for Brave Search API integration",
"status": "active",
"websiteUrl": "https://anonymous.modelcontextprotocol.io/examples",
"repository": {
"url": "https://github.com/modelcontextprotocol/servers",
"source": "github"
},
"version": "1.0.2",
"packages": [
{
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"identifier": "@modelcontextprotocol/server-brave-search",
"version": "1.0.2",
"transport": {
"type": "stdio"
},
"environmentVariables": [
{
"name": "BRAVE_API_KEY",
"description": "Brave Search API Key",
"isRequired": true,
"isSecret": true
}
]
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "npm-publisher",
"version": "1.0.1",
"build_info": {
"timestamp": "2023-12-01T10:30:00Z"
}
}
}
}
```
### Server in a Monorepo with Subfolder
For MCP servers located within a subdirectory of a larger repository (monorepo structure), use the `subfolder` field to specify the relative path:
```json
{
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
"name": "io.modelcontextprotocol/everything",
"description": "MCP server that exercises all the features of the MCP protocol",
"status": "active",
"repository": {
"url": "https://github.com/modelcontextprotocol/servers",
"source": "github",
"subfolder": "src/everything"
},
"version": "0.6.2",
"packages": [
{
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"identifier": "@modelcontextprotocol/everything",
"version": "0.6.2",
"transport": {
"type": "stdio"
}
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "npm-publisher",
"version": "1.0.1",
"build_info": {
"timestamp": "2023-12-01T10:30:00Z"
}
}
}
}
```
### 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:
```json
{
"name": "io.github.joelverhagen/knapcode-samplemcpserver",
"description": "Sample NuGet MCP server for a random number and random weather",
"version": "0.4.0-beta",
"packages": [
{
"registryType": "nuget",
"registryBaseUrl": "https://api.nuget.org",
"identifier": "Knapcode.SampleMcpServer",
"version": "0.4.0-beta",
"transport": {
"type": "stdio"
},
"packageArguments": [
{
"type": "positional",
"value": "mcp"
},
{
"type": "positional",
"value": "start"
}
]
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "nuget-publisher",
"version": "2.1.0",
"build_info": {
"timestamp": "2023-11-15T14:22:00Z",
"pipeline_id": "nuget-build-456"
}
}
}
}
```
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 `packageArguments` are provided).
### Filesystem Server with Multiple Packages
```json
{
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
"name": "io.github.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": "1.0.2",
"packages": [
{
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"identifier": "@modelcontextprotocol/server-filesystem",
"version": "1.0.2",
"transport": {
"type": "stdio"
},
"packageArguments": [
{
"type": "positional",
"valueHint": "target_dir",
"description": "Path to access",
"default": "/Users/username/Desktop",
"isRequired": true,
"isRepeated": true
}
],
"environmentVariables": [
{
"name": "LOG_LEVEL",
"description": "Logging level (debug, info, warn, error)",
"default": "info"
}
]
},
{
"registryType": "oci",
"registryBaseUrl": "https://docker.io",
"identifier": "mcp/filesystem",
"version": "1.0.2",
"transport": {
"type": "stdio"
},
"runtimeArguments": [
{
"type": "named",
"description": "Mount a volume into the container",
"name": "--mount",
"value": "type=bind,src={source_path},dst={target_path}",
"isRequired": true,
"isRepeated": true,
"variables": {
"source_path": {
"description": "Source path on host",
"format": "filepath",
"isRequired": true
},
"target_path": {
"description": "Path to mount in the container. It should be rooted in `/project` directory.",
"isRequired": true,
"default": "/project"
}
}
}
],
"packageArguments": [
{
"type": "positional",
"valueHint": "target_dir",
"value": "/project"
}
],
"environmentVariables": [
{
"name": "LOG_LEVEL",
"description": "Logging level (debug, info, warn, error)",
"default": "info"
}
]
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "ci-publisher",
"version": "3.2.1",
"build_info": {
"commit": "a1b2c3d4e5f6789",
"timestamp": "2023-12-01T10:30:00Z",
"pipeline_id": "filesystem-build-789",
"environment": "production"
}
}
}
}
```
### Remote Server Example
```json
{
"name": "io.modelcontextprotocol.anonymous/mcp-fs",
"description": "Cloud-hosted MCP filesystem server",
"repository": {
"url": "https://github.com/example/remote-fs",
"source": "github",
"id": "xyz789ab-cdef-0123-4567-890ghijklmno"
},
"version": "2.0.0",
"remotes": [
{
"type": "sse",
"url": "http://mcp-fs.anonymous.modelcontextprotocol.io/sse"
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "cloud-deployer",
"version": "2.4.0",
"build_info": {
"commit": "f7e8d9c2b1a0",
"timestamp": "2023-12-05T08:45:00Z",
"deployment_id": "remote-fs-deploy-456",
"region": "us-west-2"
}
}
}
}
```
### Python Package Example
```json
{
"name": "io.github.example/weather-mcp",
"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": "0.5.0",
"packages": [
{
"registryType": "pypi",
"registryBaseUrl": "https://pypi.org",
"identifier": "weather-mcp-server",
"version": "0.5.0",
"runtimeHint": "uvx",
"transport": {
"type": "stdio"
},
"environmentVariables": [
{
"name": "WEATHER_API_KEY",
"description": "API key for weather service",
"isRequired": true,
"isSecret": true
},
{
"name": "WEATHER_UNITS",
"description": "Temperature units (celsius, fahrenheit)",
"default": "celsius"
}
]
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "poetry-publisher",
"version": "1.8.3",
"build_info": {
"python_version": "3.11.5",
"timestamp": "2023-11-28T16:20:00Z",
"build_id": "pypi-weather-123",
"dependencies_hash": "sha256:a9b8c7d6e5f4"
}
}
}
}
```
### NuGet (.NET) Package Example
The `dnx` tool ships with the .NET 10 SDK, starting with Preview 6.
```json
{
"name": "io.github.joelverhagen/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": "0.5.0",
"packages": [
{
"registryType": "nuget",
"registryBaseUrl": "https://api.nuget.org",
"identifier": "Knapcode.SampleMcpServer",
"version": "0.5.0",
"runtimeHint": "dnx",
"transport": {
"type": "stdio"
},
"environmentVariables": [
{
"name": "WEATHER_CHOICES",
"description": "Comma separated list of weather descriptions to randomly select.",
"isRequired": true,
"isSecret": false
}
]
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "dotnet-publisher",
"version": "8.0.100",
"build_info": {
"dotnet_version": "8.0.0",
"timestamp": "2023-12-10T12:15:00Z",
"configuration": "Release",
"target_framework": "net8.0",
"build_number": "20231210.1"
}
}
}
}
```
### Complex Docker Server with Multiple Arguments
```json
{
"name": "io.github.example/database-manager",
"description": "MCP server for database operations with support for multiple database types",
"repository": {
"url": "https://github.com/example/database-manager-mcp",
"source": "github",
"id": "ghi789jk-lmno-1234-pqrs-tuvwxyz56789"
},
"version": "3.1.0",
"packages": [
{
"registryType": "oci",
"registryBaseUrl": "https://docker.io",
"identifier": "example/database-manager-mcp",
"version": "3.1.0",
"transport": {
"type": "stdio"
},
"runtimeArguments": [
{
"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",
"isRepeated": true,
"variables": {
"db_type": {
"description": "Type of database",
"choices": [
"postgres",
"mysql",
"mongodb",
"redis"
],
"isRequired": true
}
}
}
],
"packageArguments": [
{
"type": "named",
"name": "--host",
"description": "Database host",
"default": "localhost",
"isRequired": true
},
{
"type": "named",
"name": "--port",
"description": "Database port",
"format": "number"
},
{
"type": "positional",
"valueHint": "database_name",
"description": "Name of the database to connect to",
"isRequired": true
}
],
"environmentVariables": [
{
"name": "DB_USERNAME",
"description": "Database username",
"isRequired": true
},
{
"name": "DB_PASSWORD",
"description": "Database password",
"isRequired": true,
"isSecret": true
},
{
"name": "SSL_MODE",
"description": "SSL connection mode",
"default": "prefer",
"choices": [
"disable",
"prefer",
"require"
]
}
]
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "docker-buildx",
"version": "0.12.1",
"build_info": {
"docker_version": "24.0.7",
"timestamp": "2023-12-08T14:30:00Z",
"platform": "linux/amd64,linux/arm64",
"registry": "docker.io",
"image_digest": "sha256:1a2b3c4d5e6f7890"
}
}
}
}
```
### Server with Remote and Package Options
```json
{
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
"name": "io.modelcontextprotocol.anonymous/hybrid-mcp",
"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": "1.5.0",
"packages": [
{
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"identifier": "@example/hybrid-mcp-server",
"version": "1.5.0",
"runtimeHint": "npx",
"transport": {
"type": "stdio"
},
"packageArguments": [
{
"type": "named",
"name": "--mode",
"description": "Operation mode",
"default": "local",
"choices": [
"local",
"cached",
"proxy"
]
}
]
}
],
"remotes": [
{
"type": "sse",
"url": "https://mcp.anonymous.modelcontextprotocol.io/sse",
"headers": [
{
"name": "X-API-Key",
"description": "API key for authentication",
"isRequired": true,
"isSecret": true
},
{
"name": "X-Region",
"description": "Service region",
"default": "us-east-1",
"choices": [
"us-east-1",
"eu-west-1",
"ap-southeast-1"
]
}
]
},
{
"type": "streamable-http",
"url": "https://mcp.anonymous.modelcontextprotocol.io/http"
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "hybrid-deployer",
"version": "1.7.2",
"build_info": {
"timestamp": "2023-12-03T11:00:00Z",
"deployment_strategy": "blue-green",
"npm_version": "10.2.4",
"node_version": "20.10.0",
"service_endpoints": {
"sse": "deployed",
"streamable": "deployed"
}
}
}
}
}
```
### MCP Bundle (MCPB) Package Example
```json
{
"name": "io.modelcontextprotocol/text-editor",
"description": "MCP Bundle server for advanced text editing capabilities",
"repository": {
"url": "https://github.com/modelcontextprotocol/text-editor-mcpb",
"source": "github"
},
"version": "1.0.2",
"packages": [
{
"registryType": "mcpb",
"registryBaseUrl": "https://github.com",
"identifier": "https://github.com/modelcontextprotocol/text-editor-mcpb/releases/download/v1.0.2/text-editor.mcpb",
"version": "1.0.2",
"fileSha256": "fe333e598595000ae021bd27117db32ec69af6987f507ba7a63c90638ff633ce",
"transport": {
"type": "stdio"
}
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "mcpb-publisher",
"version": "1.0.0",
"build_info": {
"timestamp": "2023-12-02T09:15:00Z",
"bundle_format": "mcpb-v1"
}
}
}
}
```
This example shows an MCPB (MCP Bundle) package that:
- Is hosted on GitHub Releases (an allowlisted provider)
- Includes a SHA-256 hash for integrity verification
- Can be downloaded and executed directly by MCP clients that support MCPB
### Embedded MCP inside a CLI tool
Some CLI tools bundle an MCP server, without a standalone MCP package or a public repository. In these cases, reuse the existing `packages` shape by pointing at the host CLI package and supplying the `packageArguments` and `runtimeHint` if needed to start the MCP server.
```json
{
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
"name": "io.snyk/cli-mcp",
"description": "MCP server provided by the Snyk CLI",
"status": "active",
"version": "1.1298.0",
"packages": [
{
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"identifier": "snyk",
"version": "1.1298.0",
"transport": {
"type": "stdio"
},
"packageArguments": [
{ "type": "positional", "value": "mcp" },
{
"type": "named",
"name": "-t",
"description": "Transport type for MCP server",
"default": "stdio",
"choices": ["stdio", "sse"]
}
]
}
]
}
```
### Server with Custom Installation Path
For MCP servers that follow a custom installation path or are embedded in applications without standalone packages, use the `websiteUrl` field to direct users to setup documentation:
```json
{
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
"name": "io.modelcontextprotocol.anonymous/embedded-mcp",
"description": "MCP server embedded in a Desktop app",
"status": "active",
"websiteUrl": "https://anonymous.modelcontextprotocol.io/embedded-mcp-guide",
"version": "0.1.0"
}
```
### Deprecated Server Example
```json
{
"name": "io.github.example/old-weather",
"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": "0.9.5",
"packages": [
{
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"identifier": "@legacy/old-weather-server",
"version": "0.9.5",
"transport": {
"type": "stdio"
},
"environmentVariables": [
{
"name": "WEATHER_API_KEY",
"description": "Weather API key",
"isRequired": true,
"isSecret": true
}
]
}
],
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tool": "legacy-publisher",
"version": "0.8.1",
"build_info": {
"timestamp": "2023-06-15T09:30:00Z",
"deprecation_notice": "This publisher is deprecated. Use npm-publisher v2.0+ for new projects.",
"maintenance_mode": true,
"final_version": true
}
}
}
}
```
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