fetchr

A fully-featured HTTP client with TLS fingerprinting (JA3/JA4, HTTP/2, QUIC) — available as a CLI tool, MCP server, and importable Go package.

AI assistants can't make HTTP requests. Claude Desktop, Claude Code, and other sandboxed AI tools block outbound network calls — they can't curl, fetch APIs, or check if a website is up. fetchr solves this as an MCP server, giving AI assistants full HTTP capabilities.

Websites block automated requests. Standard HTTP clients send a default TLS fingerprint that anti-bot systems detect instantly. fetchr impersonates real browsers at the TLS level — matching their JA3 hash, HTTP/2 SETTINGS frame, header order, and more — so your requests look identical to Chrome or Firefox.

• TLS Fingerprinting — JA3, JA4, HTTP/2 SETTINGS, QUIC fingerprints
• Browser Profiles — Pre-configured Chrome and Firefox fingerprints, extensible via config
• MCP Server — stdio + SSE transport for Claude Desktop, Claude Code, and other AI assistants
• CLI Tool — Make requests, batch operations, and manage config from the terminal
• Go Package — Import pkg/curl in your own Go applications
• Curl Export — Print any request as an equivalent curl command
• Request Logging — File (JSONL), webhook, or both
• JSONC Config — JSON with comments, platform-aware auto-discovery, auto-created on first run

> [Full Usage Guide](docs/USAGE.md) — Complete reference for every command, flag, tool parameter, config option, TLS fingerprinting guide, and recipes. > > [Contributing](docs/CONTRIBUTING.md) — Development setup, architecture, and internals for contributors.

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Add fetchr to your AI coding agent (Claude Code, Cursor, Codex, Cline, etc.):

npx skills add thesatellite-ai/fetchr

One-liner (macOS/Linux):

curl -sL https://raw.githubusercontent.com/thesatellite-ai/fetchr/main/instal