Claude Code

Claude Code calls Anthropic's /v1/messages endpoint. co/core implements OpenAI's /v1/chat/completions, so you need a local proxy that translates between the two protocols.

One option is claude-code-proxy:

# Terminal 1 — start the proxy
export OPENAI_BASE_URL="https://console.cocore.dev/api/v1"
export OPENAI_API_KEY=cocore-your-key-here
python start_proxy.py

# Terminal 2 — point Claude Code at the proxy
export ANTHROPIC_BASE_URL=http://localhost:8082
export ANTHROPIC_API_KEY=unused
claude

Adjust the port to match your proxy. For native OpenAI-compatible tooling without a proxy, see the OpenCode setup page.