Streamable http server

[srajan1202]

Added support for streamableHttp Server to start streamable httpServer just pass argument --mcp-transport=http

To Try

run
npm run build

Then

node dist/index.js --mcp-transport=http

Issue #17

[cla-checker-service]

💚 CLA has been signed

[srajan1202]

Cla signed

[foxyterkel]

Hello, we are super lucky to have a similar issue on the day you opened this PR. We pulled it, built it, and started the server. But we struggle to get an answer from the method. We do request to localhost:3002/mcp with payload
{“jsonrpc": "2.0", "method": "get_mappings", "params": {"index": "our-index"}, "id": "1"}
and keep getting errors like:
{"jsonrpc":"2.0","id":"1","error":{"code":-32601,"message":"Method not found"}}
Are we missing something? It seems like the right query.

[srajan1202]

Hello, we are super lucky to have a similar issue on the day you opened this PR. We pulled it, built it, and started the server. But we struggle to get an answer from the method. We do request to localhost:3002/mcp with payload {“jsonrpc": "2.0", "method": "get_mappings", "params": {"index": "our-index"}, "id": "1"} and keep getting errors like: {"jsonrpc":"2.0","id":"1","error":{"code":-32601,"message":"Method not found"}} Are we missing something? It seems like the right query.

Hello, we are super lucky to have a similar issue on the day you opened this PR. We pulled it, built it, and started the server. But we struggle to get an answer from the method. We do request to localhost:3002/mcp with payload {“jsonrpc": "2.0", "method": "get_mappings", "params": {"index": "our-index"}, "id": "1"} and keep getting errors like: {"jsonrpc":"2.0","id":"1","error":{"code":-32601,"message":"Method not found"}} Are we missing something? It seems like the right query.

Refer

https://modelcontextprotocol.io/specification/2025-03-26/server/tools#calling-tools

The JRPC request structure should be like

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "get_mappings",
    "arguments": {
        "index": "our-index"
    }
  },
  "id": "1"
}

[srajan1202]

buildkite test this

[JoshMock]

Thanks for the contribution @srajan1202! We're taking a look at this for a bit to make sure your implementation aligns with some architectural changes we're working on at the moment. Will get back to you soon.