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Introduce serverId, rename id to versionId (#465)

Browse source 
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>
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126
docs/reference/server-json/CHANGELOG.md Normal file
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@ -0,0 +1,126 @@
# Server JSON Schema Changelog
Changes to the server.json schema and format.
## 2025-09-16
### ⚠️ BREAKING CHANGES
#### Field Names: snake_case → camelCase ([#428](https://github.com/modelcontextprotocol/registry/issues/428))
All JSON field names standardized to camelCase. **All existing `server.json` files must be updated.**
**Changed fields:**
- `registry_type` → `registryType`
- `registry_base_url` → `registryBaseUrl`
- `file_sha256` → `fileSha256`
- `runtime_hint` → `runtimeHint`
- `runtime_arguments` → `runtimeArguments`
- `package_arguments` → `packageArguments`
- `environment_variables` → `environmentVariables`
- `is_required` → `isRequired`
- `is_secret` → `isSecret`
- `value_hint` → `valueHint`
- `is_repeated` → `isRepeated`
- `website_url` → `websiteUrl`
#### Migration Examples
**Package Configuration:**
```json
// OLD - Will be rejected
{
"packages": [{
"registry_type": "npm",
"registry_base_url": "https://registry.npmjs.org",
"file_sha256": "abc123...",
"runtime_hint": "node",
"runtime_arguments": [...],
"package_arguments": [...],
"environment_variables": [...]
}]
}
// NEW - Required format
{
"packages": [{
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"fileSha256": "abc123...",
"runtimeHint": "node",
"runtimeArguments": [...],
"packageArguments": [...],
"environmentVariables": [...]
}]
}
```
**Arguments Configuration:**
```json
// OLD - Will be rejected
{
"runtime_arguments": [
{
"name": "port",
"is_required": true,
"is_repeated": false,
"value_hint": "8080"
}
]
}
// NEW - Required format
{
"runtimeArguments": [
{
"name": "port",
"isRequired": true,
"isRepeated": false,
"valueHint": "8080"
}
]
}
```
**Environment Variables:**
```json
// OLD - Will be rejected
{
"environment_variables": [
{
"name": "API_KEY",
"is_required": true,
"is_secret": true
}
]
}
// NEW - Required format
{
"environmentVariables": [
{
"name": "API_KEY",
"isRequired": true,
"isSecret": true
}
]
}
```
#### Migration Checklist for Publishers
- [ ] Update your `server.json` files to use camelCase field names
- [ ] Test server publishing with new CLI version
- [ ] Update any automation scripts that reference old field names
- [ ] Update documentation referencing old field names
#### Updated Schema Reference
🔗 **Current schema**: https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json
### Changed
- Schema version: `2025-07-09` → `2025-09-16`
## 2025-07-09
Initial release of the server.json schema.