MCP Calculator Streamable HTTP
Provides basic arithmetic calculation tools through an HTTP-accessible MCP server. Supports mathematical operations like addition with streamable responses for integration with MCP clients.
README
activate
source .venv/bin/activate
run
uv run mcp dev 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 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
-
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: b7ab76da70b24c04afaf1123bfba5523"
-d '{"jsonrpc":"2.0","method":"notifications/initialized"}' -
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: b7ab76da70b24c04afaf1123bfba5523"
-d '{"jsonrpc":"2.0","id":2,"method":"tools/list"}' -
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: b7ab76da70b24c04afaf1123bfba5523"
-d '{"jsonrpc":"2.0","id":3,"method":"tools/call","params":{"name":"add","arguments":{"a":1,"b":1}}}'
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