## Summary
Introduces a new optional `title` field for MCP servers to provide a
clean, human-readable display name that clients and subregistries can
use for display purposes.
Fixes#606
## Changes
- Added `title` field to `ServerJSON` type (optional, max 100 chars)
- Added validation to reject titles ending with 'MCP Server', 'MCP
server', or 'MCP' suffixes
- Updated JSON schema and OpenAPI specification
- Added comprehensive test coverage for title validation
- Updated all documentation examples to demonstrate the new field
## Validation
The title field:
- Is optional (can be omitted)
- Must not be only whitespace if provided
- Must not end with MCP-related suffixes (case-insensitive)
- Can contain 'MCP' in the middle (e.g., "MCP Weather API" is valid)
Examples:
- ✅ Valid: "GitHub", "Weather API", "Slack Integration"
- ❌ Invalid: "GitHub MCP", "Weather MCP Server", "Slack-MCP"
---------
Co-authored-by: Claude <noreply@anthropic.com>
This PR simplifies the OpenAPI schema by merging the `Server` component
into `ServerDetail`, addressing the issue where the `Server` component
was never used independently.
## Changes
- Merged all Server properties directly into ServerDetail in both
OpenAPI spec and JSON schema
- Removed allOf construct for clearer, standalone definitions
- Deleted unused Server components
## Benefits
- Clearer schema structure
- Easier to understand without inheritance tracing
- Reduced maintenance complexity
- No functionality loss
## Validation
All schemas and documentation examples continue to validate
successfully.
Resolves#609
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>
<!-- Provide a brief summary of your changes -->
## Motivation and Context
<!-- Why is this change needed? What problem does it solve? -->
This seems to be a regresion after rename, those fields were originally
required:
8d7e471fd3/docs/server-registry-api/openapi.yaml (L247-L252)
In
https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json,
those fields are also required.
## How Has This Been Tested?
<!-- Have you tested this in a real application? Which scenarios were
tested? -->
## Breaking Changes
<!-- Will users need to update their code or configurations? -->
No
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [x] 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. -->
- [ ] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [ ] My code follows the repository's style guidelines
- [ ] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed
## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->
- Add missing required fields (description, transport) to all
server.json examples
- Add $schema field to examples that were missing it
- Add version field to MCPB example
- Create validation tool for guide examples with $schema
- Integrate guide validation into Makefile and CI
Fixes#507🤖 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>
Co-authored-by: Claude <noreply@anthropic.com>
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>
## Summary
- Fixed `Remote` schema in OpenAPI spec to use correct field name `type`
instead of `transport_type`
- Updated enum values from `[streamable, sse]` to `[streamable-http,
sse]` to match actual API
## Context
The OpenAPI spec was inconsistent with the actual API implementation.
The live API at https://registry.modelcontextprotocol.io/v0/servers
returns `type: 'sse'` and `type: 'streamable-http'`, but the spec
defined `transport_type` with values `streamable` and `sse`.
This now matches:
- The Go constants in pkg/model/constants.go
- The actual API responses
Adds optional website_url field to the server.json schema allowing
publishers to provide a url to the server's homepage, documentation, or
project website. This provides a central link for users to learn more
about the server. Particularly useful when the server has custom
installation instructions or setup requirements.
Issue: #183
PR: #130
Discussion: #274
## Motivation and Context
This change addresses the need identified in #130, #183 and #274 for a
standardized way to direct users to an official landing page similar to
`homepage` used in NPM
([example](https://www.npmjs.com/package/@modelcontextprotocol/sdk)). It
is also serves as a viable option for MCP Servers that don't follow
typical package manager patterns (e.g., embedded in a Desktop app).
## How Has This Been Tested?
- Schema validation: All 13 example server.json files validate
successfully against the updated schema
- Go validator tests: Added additional test cases covering URL format
validation and namespace matching
- Run all checks: Updated example files to work with anonymous
publishing and verified `make check` passes
## Breaking Changes
None. The website_url field is optional and backward compatible with
existing server.json files.
## Types of changes
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [x] Documentation update
## Checklist
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
## Additional context
Security considerations:
- Website URL validation enforces that the domain matches the
publisher's reverse-DNS namespace
- HTTP/HTTPS protocols are required (no file:// or other schemes)
- Validation is consistent with existing remote URL validation patterns
The publishing guide incorrectly suggested users could verify their
server by directly accessing `/servers/{server-name}` or
`/v0/servers/{server-name}`, but the API only supports:
1. **Search by name**: `GET /v0/servers?search={server-name}`
2. **Get by UUID**: `GET /v0/servers/{uuid}`
This PR updates the documentation to show the correct verification
method using the search endpoint.
Fixes#410
## Summary
Simplified the schema structure by:
- Replacing `version_detail.version` with direct `version` field
- Removing unused `release_date` field from seed data
- Updating all API types, models, and tests to match new structure
- Maintaining backwards compatibility in API responses
This change makes the schema more intuitive and reduces nesting depth.
## Summary
- Adds `updated_since`, `search`, and `version` query parameters to `GET
/v0/servers`
- Enables incremental synchronization via RFC3339 timestamp filtering
- Provides simple substring search on server names
- Supports latest version filtering with `version=latest`
This implementation provides the core filtering capabilities needed for
efficient registry synchronization and improved server discovery.
Fixes#291Fixes#135
## Summary
Updates the `_meta` field structure to be compliant with the MCP
specification by using proper `prefix/name` format for vendor
extensions.
### Changes
- **Registry metadata**: `io.modelcontextprotocol.registry` →
`io.modelcontextprotocol.registry/official`
- **Publisher metadata**: `publisher` →
`io.modelcontextprotocol.registry/publisher-provided`
- **Database migration**: Updates indexes to use new field paths
- **Updated all code**: Service layer, validators, tests, and seed data
### Format Before
```json
{
"_meta": {
"publisher": { "license": "MIT" },
"io.modelcontextprotocol.registry": { "id": "...", "is_latest": true }
}
}
```
### Format After
```json
{
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": { "license": "MIT" },
"io.modelcontextprotocol.registry/official": { "id": "...", "is_latest": true }
}
}
```
This resolves the naming collision with the planned top-level
`publisher` field and ensures compliance with MCP specification
requirements.
Fixes#356
## Motivation and Context
Docs currently don't have very clear organisation, and don't explain
core flows.
This fixes#89 (although we still might want to push these to
`https://modelcontextprotocol.io/docs/`), based on the plan there.
One minor change from that plan is that I merged tutorials and guides,
because they ended up basically being duplicates which I thought would
be annoying for us to keep in sync. Additionally in the Diátaxis
framework, tutorials and guides are separated by whether they are
focused on acquisition of skills (e.g. in a learning environment) or
application of skills (e.g. in a work environment). I expect the
registry to be something that will be used occasionally in a work
environment, rather than a fundamental 'learnable' skill so I think it's
reasonable not to have tutorials and fold these into guides.
## How Has This Been Tested?
- Read through all these updated docs
- Unit and integration tests (that previously used examples.md and use
the schema) working
- Ran `npx markdown-link-check .` to check all the links work
## Breaking Changes
Links to old docs will break, but I don't think there are any. All
internal links have been checked and updated.
## 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
