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eliezerraj

MCP Calculator Streamable HTTP

by eliezerraj
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Python
Remote

create venv

python3 -m venv .venv

activate

source .venv/bin/activate

#install dependecies uv add mcp uv add 'mcp[cli]'

run

uv run mcp dev server.py npx @modelcontextprotocol/inspector python server.py

run

python3 server.py

test (agent auto)

:use the mcp calculator_streamable_http add 1 to 1 and show the result

curl

1 Initialize Session curl -X POST http://localhost:8000/mcp
-H "Content-Type: application/json"
-H "MCP-Protocol-Version: 2025-06-18"
-H "Accept: application/json, text/event-stream"
-d '{ "jsonrpc":"2.0", "id":1, "method":"initialize", "params":{"protocolVersion":"2025-06-18", "capabilities":{"tools":{}}, "clientInfo":{"name":"test-client", "version":"1.0.0"}}}'

1.1 Initialize Session and get session-id curl -X POST http://localhost:8000/mcp
-H "Content-Type: application/json"
-H "MCP-Protocol-Version: 2025-06-18"
-H "Accept: application/json, text/event-stream"
-d '{ "jsonrpc":"2.0", "id":1, "method":"initialize", "params":{"protocolVersion":"2025-06-18", "capabilities":{"tools":{}}, "clientInfo":{"name":"test-client", "version":"1.0.0"}}}'
-v 2>&1 | grep -i "mcp-session-id" | cut -d' ' -f3

1.2 Initialize Session and get session-id curl -X POST http://localhost:8000/mcp
-H "Content-Type: application/json"
-H "MCP-Protocol-Version: 2025-06-18"
-H "Accept: application/json, text/event-stream"
-d '{ "jsonrpc":"2.0", "id":1, "method":"sessions/open", "params":{"protocolVersion":"2025-06-18", "capabilities":{"tools":{}}, "clientInfo":{"name":"test-client", "version":"1.0.0"}}}'
-v 2>&1 | grep -i "mcp-session-id" | cut -d' ' -f3

  1. Send Initialized Notification curl -X POST http://localhost:8000/mcp
    -H "Content-Type: application/json"
    -H "MCP-Protocol-Version: 2025-06-18"
    -H "Accept: application/json, text/event-stream"
    -H "Mcp-Session-Id: a8691f135a564c1cac7cbc5b160948a7"
    -d '{"jsonrpc":"2.0","method":"notifications/initialized"}'

  2. List Tools curl -X POST http://localhost:8000/mcp
    -H "Content-Type: application/json"
    -H "MCP-Protocol-Version: 2025-06-18"
    -H "Accept: application/json, text/event-stream"
    -H "Mcp-Session-Id: a8691f135a564c1cac7cbc5b160948a7"
    -d '{"jsonrpc":"2.0","id":2,"method":"tools/list"}'

  3. Call Add Tool curl -X POST http://localhost:8000/mcp
    -H "Content-Type: application/json"
    -H "MCP-Protocol-Version: 2025-06-18"
    -H "Accept: application/json, text/event-stream"
    -H "Mcp-Session-Id: a8691f135a564c1cac7cbc5b160948a7"
    -d '{"jsonrpc":"2.0","id":3,"method":"tools/call","params":{"name":"add","arguments":{"a":1,"b":1}}}'

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