openclaude-multi-llm — Claude Code skill: run other LLMs in your tools

What openclaude-multi-llm does

OpenClaude is a Claude fork that sends every model call through a shim, openaiShim.ts. The shim stands in for the Anthropic SDK interface, so the rest of the codebase never learns it is talking to someone else. It maps Anthropic content blocks onto the OpenAI messages array, turns tool_use and tool_result into function_calls and tool, converts OpenAI streaming chunks into Anthropic stream events, and moves system prompt arrays into the system role.

The toolset survives the swap: Bash, FileRead, FileWrite, FileEdit, Glob, Grep, WebFetch, Agent, MCP, Tasks, LSP, NotebookEdit. Provider choice lives in environment variables. Skip CLAUDE_CODE_USE_OPENAI=1 and the shim stays off, so calls go to the Anthropic SDK instead. Cloud providers want OPENAI_API_KEY; local Ollama and LM Studio do not. When both are set, OPENAI_MODEL wins over ANTHROPIC_MODEL.

Install globally with npm: npm install -g @gitlawb/openclaude, which gives you the openclaude command. Building from source needs Bun. Provider settings can be saved to .openclaude-profile.json, so you stop re-exporting variables each session. bun run doctor:runtime checks the provider setup before you start.