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fastmcp vs yorishiro-proxy
fastmcp logo
fastmcp
★ 25.4k
vs
yorishiro-proxy logo
yorishiro-proxy
★ 3

fastmcp vs yorishiro-proxy

fastmcp: FastMCP is a standard framework for building Model Context Protocol (MCP) applications, which connect LLMs to tools and data. It simplifies the process by automatically generating schemas, validation, and documentation for tools, and managing transport negotiation and authentication for server connections. FastMCP offers a comprehensive solution for developing, deploying, and scaling MCP-powered systems.; yorishiro-proxy: Yorishiro Proxy is an AI-first MITM proxy tool that runs as an MCP server, giving AI agents full control over proxy operations. It supports multiple protocols including HTTP, HTTPS, gRPC, WebSocket, and raw TCP, with features like traffic recording, replay, fuzzing, and a web UI. Designed for automated security testing with Claude Code and other MCP-compatible agents.

01

TL;DR

fastmcp logoChoose fastmcp if…

Building LLM applications that interact with custom tools and data sources

yorishiro-proxy logoChoose yorishiro-proxy if…

Automated security testing with AI agents

02

Side-by-Side Comparison

Field
fastmcp logofastmcp
yorishiro-proxy logoyorishiro-proxy
Category
Dev Tooling
Security & Safety
Stars
★ 25.4k
★ 3
License
Apache-2.0
Apache-2.0
Updated
4d ago
3d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
agents, fastmcp, llms
mcp-server, mcp-servers, mitm-proxy
03

Features

fastmcp logofastmcp
01Automatic schema, validation, and documentation generation for tools
02Managed transport negotiation, authentication, and protocol lifecycle for server connections
03Wraps Python functions into MCP-compliant tools, resources, and prompts (Servers)
04Connects to any MCP server with full protocol support (Clients)
05Provides interactive UIs for tools rendered directly in conversations (Apps)
yorishiro-proxy logoyorishiro-proxy
01Traffic Interception & Recording
02Per-Protocol Resend with typed schemas
03Per-Protocol Fuzz with payload sets
04Multi-Protocol support (HTTP, HTTPS, gRPC, WebSocket, etc.)
05Embedded Web UI for visual inspection
04

Use Cases

fastmcp logofastmcp
↳Building LLM applications that interact with custom tools and data sources
↳Creating interactive conversational UIs for backend functionalities
↳Developing and deploying scalable MCP servers and clients
yorishiro-proxy logoyorishiro-proxy
↳Automated security testing with AI agents
↳Traffic analysis and replay for debugging
↳Fuzzing APIs and web applications
05

Best For

fastmcp logofastmcp
Most PopularDev ToolingLLM Infra
yorishiro-proxy logoyorishiro-proxy
TrendingSecurity & Safety
FAQ

FAQ

What is the difference between fastmcp and yorishiro-proxy?
Both fastmcp and yorishiro-proxy are in the Dev Tooling category. fastmcp has 25.4k stars, while yorishiro-proxy has 3 stars.
Which is better, fastmcp or yorishiro-proxy?
The best choice depends on your use case. Choose fastmcp if Building LLM applications that interact with custom tools and data sources, and yorishiro-proxy if Automated security testing with AI agents.
Is fastmcp free or open source?
Yes, fastmcp is open source on GitHub (Apache-2.0).
Is yorishiro-proxy free or open source?
Yes, yorishiro-proxy is open source on GitHub (Apache-2.0).
→

Related

Alternatives to fastmcp →Alternatives to yorishiro-proxy →fastmcp details →yorishiro-proxy details →
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