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thanakara

anvyl-mcp

by thanakara
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Python
Local

A minimal MCP server built from scratch — no SDK.

Implements the Model Context Protocol (2025-03-26) over both Streamable HTTP and WebSocket, with a clean separation between transport, protocol, registry, and execution layers.

Related MCP server: Modular MCP Server

Tools

Tool

Description

shell

Run a shell command

readfile

Read a file from disk

writefile

Write a file to disk

fetch

Fetch a URL

Quickstart

uv sync
python serve.py

Connect via MCP Inspector:

npx @modelcontextprotocol/inspector
# Transport: Streamable HTTP → http://127.0.0.1:8000/mcp
# Transport: WebSocket       → ws://127.0.0.1:8000/ws

Architecture

Transport and protocol are fully decoupled. Both HTTP and WebSocket adapters call the same dispatch() — adding a new transport means writing a thin adapter, not touching protocol logic.

Tool isolation is set per-tool: shell runs in an isolated subprocess with a timeout; trusted tools run inline.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivitySlowing
ResponsivenessNo issues

Resources

Related MCP Connectors

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