d42f11e479<!-- Provide a brief summary of your changes --> ## Motivation and Context <!-- Why is this change needed? What problem does it solve? --> This is one attempt to resolve https://github.com/modelcontextprotocol/registry/issues/169. Instead of adding a new "constant" argument type, I expanded the existing positional one and just dropped the `value_hint` requirement. I am not sure if this has VS Code impact @sandy081, @connor4312. Also, removed unneeded release_date values from the samples. ## How Has This Been Tested? <!-- Have you tested this in a real application? Which scenarios were tested? --> I tested the current server.json samples in the repo against the new (less strict) schema. Of course they passed (aside from an unrelated bug in my previous NuGet sample 🤦). ## Breaking Changes <!-- Will users need to update their code or configurations? --> ## Types of changes <!-- What types of changes does your code introduce? Put an `x` in all the boxes that apply: --> - [ ] Bug fix (non-breaking change which fixes an issue) - [ ] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [x] Documentation update ## Checklist <!-- Go over all the following points, and put an `x` in all the boxes that apply. --> - [x] I have read the [MCP Documentation](https://modelcontextprotocol.io) - [x] My code follows the repository's style guidelines - [ ] New and existing tests pass locally - [ ] I have added appropriate error handling - [x] I have added or updated documentation as needed ## Additional context <!-- Add any other context, implementation notes, or design decisions -->
343 lines
11 KiB
YAML
343 lines
11 KiB
YAML
openapi: 3.1.0
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jsonSchemaDialect: "https://json-schema.org/draft/2020-12/schema"
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$id: https://modelcontextprotocol.io/schemas/draft/2025-07-09/server-registry-openapi
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info:
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title: MCP Server Registry API
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summary: API for discovering and accessing MCP server metadata
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description: |
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Specification for a theoretical REST API that serves up metadata about MCP servers.
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license:
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name: MIT
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identifier: MIT
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paths:
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/servers:
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get:
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summary: List MCP servers
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description: Returns a list of all registered MCP servers
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parameters:
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- name: limit
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in: query
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description: Number of results per page
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schema:
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type: integer
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minimum: 1
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- name: offset
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in: query
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description: Number of results to skip for pagination
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schema:
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type: integer
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default: 0
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minimum: 0
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responses:
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'200':
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description: A list of MCP servers
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/ServerList'
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/servers/{id}:
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get:
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summary: Get MCP server details
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description: Returns detailed information about a specific MCP server
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parameters:
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- name: id
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in: path
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required: true
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description: Unique ID of the server
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schema:
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type: string
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format: uuid
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- name: version
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in: query
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description: Desired MCP server version
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schema:
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type: string
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responses:
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'200':
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description: Detailed server information
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/ServerDetail'
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'404':
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description: Server not found
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content:
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application/json:
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schema:
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type: object
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properties:
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error:
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type: string
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example: "Server not found"
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components:
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schemas:
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Repository:
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type: object
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required:
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- url
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- source
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- id
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properties:
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url:
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type: string
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format: uri
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example: "https://github.com/modelcontextprotocol/servers"
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source:
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type: string
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example: "github"
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id:
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type: string
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example: "b94b5f7e-c7c6-d760-2c78-a5e9b8a5b8c9"
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Server:
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type: object
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required:
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- id
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- name
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- description
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- version_detail
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properties:
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id:
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type: string
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format: uuid
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example: "a5e8a7f0-d4e4-4a1d-b12f-2896a23fd4f1"
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name:
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type: string
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description: Human-readable description of the server's functionality
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example: "io.modelcontextprotocol/filesystem"
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description:
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type: string
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example: "Node.js server implementing Model Context Protocol (MCP) for filesystem operations."
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repository:
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$ref: '#/components/schemas/Repository'
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version_detail:
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$ref: '#/components/schemas/VersionDetail'
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VersionDetail:
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type: object
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required:
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- version
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- release_date
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- is_latest
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properties:
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version:
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type: string
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example: "1.0.2"
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description: Equivalent of Implementation.version in MCP specification.
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release_date:
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type: string
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format: date-time
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example: "2023-06-15T10:30:00Z"
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description: Datetime that the MCP server version was published to the registry.
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is_latest:
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type: boolean
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example: true
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description: Whether the MCP server version is the latest version available in the registry.
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ServerList:
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type: object
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required:
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- servers
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- total_count
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properties:
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servers:
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type: array
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items:
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$ref: '#/components/schemas/Server'
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next:
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type: string
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format: uri
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example: "https://registry.modelcontextprotocol.io/servers?offset=50"
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total_count:
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type: integer
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example: 1
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Package:
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type: object
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required:
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- registry_name
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- name
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- version
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properties:
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registry_name:
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type: string
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description: Package registry type
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example: "npm"
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name:
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type: string
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description: Package name in the registry
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example: "io.modelcontextprotocol/filesystem"
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version:
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type: string
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description: Package version
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example: "1.0.2"
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runtime_hint:
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type: string
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description: A hint to help clients determine the appropriate runtime for the package. This field should be provided when `runtime_arguments` are present.
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examples: [npx, uvx, dnx]
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runtime_arguments:
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type: array
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description: A list of arguments to be passed to the package's runtime command (such as docker or npx). The `runtime_hint` field should be provided when `runtime_arguments` are present.
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items:
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$ref: '#/components/schemas/Argument'
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package_arguments:
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type: array
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description: A list of arguments to be passed to the package's binary.
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items:
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$ref: '#/components/schemas/Argument'
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environment_variables:
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type: array
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description: A mapping of environment variables to be set when running the package.
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items:
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$ref: '#/components/schemas/KeyValueInput'
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Input:
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type: object
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properties:
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description:
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description: A description of the input, which clients can use to provide context to the user.
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type: string
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is_required:
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type: boolean
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default: false
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format:
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type: string
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description: |
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Specifies the input format. Supported values include `filepath`, which should be interpreted as a file on the user's filesystem.
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When the input is converted to a string, booleans should be represented by the strings "true" and "false", and numbers should be represented as decimal values.
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enum: [string, number, boolean, filepath]
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default: string
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value:
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type: string
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description: |
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The default value for the input. If this is not set, the user may be prompted to provide a value. If a value is set, it should not be configurable by end users.
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Identifiers wrapped in `{curly_braces}` will be replaced with the corresponding properties from the input `variables` map. If an identifier in braces is not found in `variables`, or if `variables` is not provided, the `{curly_braces}` substring should remain unchanged.
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is_secret:
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type: boolean
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description: Indicates whether the input is a secret value (e.g., password, token). If true, clients should handle the value securely.
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default: false
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default:
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type: string
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description: The default value for the input.
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choices:
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type: array
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description: A list of possible values for the input. If provided, the user must select one of these values.
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items:
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type: string
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example: []
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InputWithVariables:
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allOf:
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- $ref: '#/components/schemas/Input'
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- type: object
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properties:
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variables:
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type: object
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description: A map of variable names to their values. Keys in the input `value` that are wrapped in `{curly_braces}` will be replaced with the corresponding variable values.
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additionalProperties:
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$ref: '#/components/schemas/Input'
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PositionalArgument:
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description: A positional input is a value inserted verbatim into the command line.
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allOf:
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- $ref: '#/components/schemas/InputWithVariables'
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- type: object
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required:
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- type
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properties:
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type:
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type: string
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enum: [positional]
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example: "positional"
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value_hint:
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type: string
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description: An identifier-like hint for the value. This is not part of the command line, but can be used by client configuration and to provide hints to users.
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example: file_path
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is_repeated:
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type: boolean
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description: Whether the argument can be repeated multiple times in the command line.
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default: false
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anyOf:
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- required:
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- value
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- required:
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- value_hint
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NamedArgument:
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description: A command-line `--flag={value}`.
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allOf:
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- $ref: '#/components/schemas/InputWithVariables'
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- type: object
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required:
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- type
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- name
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properties:
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type:
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type: string
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enum: [named]
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example: "named"
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name:
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type: string
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description: The flag name, including any leading dashes.
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example: "--port"
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is_repeated:
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type: boolean
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description: Whether the argument can be repeated multiple times.
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default: false
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KeyValueInput:
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allOf:
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- $ref: '#/components/schemas/InputWithVariables'
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- type: object
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required:
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- name
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properties:
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name:
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type: string
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description: Name of the header or environment variable.
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example: SOME_VARIABLE
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Argument:
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anyOf:
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- $ref: '#/components/schemas/PositionalArgument'
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- $ref: '#/components/schemas/NamedArgument'
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Remote:
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type: object
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required:
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- transport_type
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- url
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properties:
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transport_type:
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type: string
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enum: [streamable, sse]
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description: Transport protocol type
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example: "sse"
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url:
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type: string
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format: uri
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description: Remote server URL
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example: "https://mcp-fs.example.com/sse"
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headers:
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type: array
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description: HTTP headers to include
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items:
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$ref: '#/components/schemas/KeyValueInput'
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ServerDetail:
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description: Schema for a static representation of an MCP server. Used in various contexts related to discovery, installation, and configuration.
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allOf:
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- $ref: '#/components/schemas/Server'
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- type: object
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properties:
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packages:
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type: array
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items:
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$ref: '#/components/schemas/Package'
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remotes:
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type: array
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items:
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$ref: '#/components/schemas/Remote'
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