rynfar/meridian

Use your Claude Max subscription with OpenCode, Pi, Droid, Aider, Crush, Cline, Jcode. Proxy that bridges Anthropic's official SDK to enable Claude Max in third-party tools.

What it solves

Meridian acts as a bridge between the Claude Agent SDK (used by Claude Code) and standard AI tool protocols. It allows developers to use their favorite coding agents and editors (like Aider, Cline, or Open WebUI) with the Claude Max subscription's programmatic access, without needing to pay for separate API keys or use reverse-engineered hacks.

How it works

Meridian runs as a local proxy server that accepts standard Anthropic or OpenAI API requests. It translates these requests into calls to the official Claude Agent SDK, which handles the actual communication with Anthropic's servers. By using the official SDK, Meridian ensures that session management, prompt caching, and authentication are handled natively by Anthropic, while providing a compatible API layer for third-party tools.

Who it’s for

Developers who have a Claude Max subscription and want to use Claude's capabilities within third-party AI coding agents, IDE extensions, and terminal-based AI tools instead of the official Claude Code CLI.

Highlights

  • API Compatibility: Provides both standard Anthropic and OpenAI-compatible endpoints (/v1/chat/completions).
  • Session Management: Maintains conversation persistence, including support for compaction and undo operations.
  • Multi-Profile Support: Allows instant switching between multiple Claude accounts with sticky session routing.
  • Advanced Telemetry: Includes a real-time dashboard for monitoring token usage, prompt cache efficiency, and cost estimation.
  • Multimodal Support: Handles images, documents, and file attachments.
  • Automatic Token Refresh: Transparently manages OAuth token expiry to prevent request interruptions.

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