Bridging 2 `mcp` servers with the same `tool_name`

[zigelboim-misha]

If I connect 2 mcp servers with the same tool_names like this:

{
    "mcp_servers": 
      {
        "ben-github": {
            "url": "http://host.docker.internal:8001/sse"
        },
        "misha-github": {
            "url": "http://host.docker.internal:8002/sse"
        }
      }
}

For example using 2 GitHub mcp server - one per organization.

curl -X 'GET' \
  'http://localhost:8000/mcp/servers/ben-github/tools' \
  -H 'accept: application/json'

Response:

{
  "_meta": null,
  "nextCursor": null,
  "tools": [
    {
      "name": "get_me",
      "description": "Get details of the authenticated GitHub user. Use this when a request include \"me\", \"my\"...",
      "inputSchema": {
        "type": "object",
        "properties": {
          "reason": {
            "description": "Optional: reason the session was created",
            "type": "string"
          }
        }
      }
    }
  ]
}

curl -X 'GET' \
  'http://localhost:8000/mcp/servers/misha-github/tools' \
  -H 'accept: application/json'

Response:

{
  "_meta": null,
  "nextCursor": null,
  "tools": [
    {
      "name": "get_me",
      "description": "Get details of the authenticated GitHub user. Use this when a request include \"me\", \"my\"...",
      "inputSchema": {
        "type": "object",
        "properties": {
          "reason": {
            "description": "Optional: reason the session was created",
            "type": "string"
          }
        }
      }
    }
  ]
}

Or using the unified api:

curl -X 'GET' \
  'http://localhost:8000/mcp/tools' \
  -H 'accept: application/json'

Response:

{
  "ben-github": {
    "_meta": null,
    "nextCursor": null,
    "tools": [
      {
        "name": "get_me",
        "description": "Get details of the authenticated GitHub user. Use this when a request include \"me\", \"my\"...",
        "inputSchema": {
          "type": "object",
          "properties": {
            "reason": {
              "description": "Optional: reason the session was created",
              "type": "string"
            }
          }
        }
      }
    ]
  },
  "misha-github": {
    "_meta": null,
    "nextCursor": null,
    "tools": [
      {
        "name": "get_me",
        "description": "Get details of the authenticated GitHub user. Use this when a request include \"me\", \"my\"...",
        "inputSchema": {
          "type": "object",
          "properties": {
            "reason": {
              "description": "Optional: reason the session was created",
              "type": "string"
            }
          }
        }
      }
    ]
  }
}

Then I try to actually use the tools, and I cannot tell the service what server I want to run with:

curl -X 'POST' \
  'http://localhost:8000/mcp/tools/get_me/call' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{}'

It only uses the 2nd mcp server...

[SecretiveShell]

I can see why this would be an issue.

Is it a suitable fix to just add api routes for /{server}/tools/{name}/call?

[zigelboim-misha]

@SecretiveShell

This will solve it, yes.

Or maybe add an optional parameter to the existing api with mcp-server-name or something.