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claude-code-proxy

OpenCode Go

OpenCode Go uses the API at https://opencode.ai/zen/go/v1. Its catalog spans OpenAI-compatible chat completions, Anthropic-compatible messages, and OpenAI Responses; the proxy selects the wire protocol for each registered model. Each mapping comes from the official OpenCode Go endpoint table or direct protocol verification against the API.

Account and authentication

Section titled “Account and authentication”

Subscribe to OpenCode Go, copy your API key, and provide it to the proxy:

Terminal window
export OPENCODE_API_KEY=YOUR_OPENCODE_GO_API_KEY
claude-code-proxy serve

CCP_OPENCODE_API_KEY takes precedence over OPENCODE_API_KEY. The opencode.apiKey configuration key is also supported. The proxy does not implement an OpenCode login flow.

Models

Section titled “Models”

Run claude-code-proxy models for the statically registered catalog. Every registered model has a provider-qualified form. Bare IDs are also accepted when they do not belong to another provider:

Terminal window
ANTHROPIC_MODEL=opencode-go/glm-5.2 \
ANTHROPIC_SMALL_FAST_MODEL=opencode-go/glm-5.2 \
  claude --model opencode-go/glm-5.2

The bare IDs gpt-5.6-luna, grok-4.5, kimi-k3, and kimi-k2.6 remain owned by the existing Codex, Grok, or Kimi providers. Prefix those IDs with opencode-go/ to select the OpenCode Go version.

Tools and streaming

Section titled “Tools and streaming”

Claude function definitions, tool choices, tool calls, and tool results are translated for chat-completions models. Tool-call argument fragments are streamed incrementally and reassembled into Anthropic tool_use blocks. Upstream tool behavior remains model-dependent.

Models served through the Anthropic-compatible endpoint retain their native messages stream. GPT 5.6 Luna uses OpenCode Go’s Responses endpoint and is translated to the same Anthropic event stream as other providers. The proxy handles /v1/messages/count_tokens locally and does not send that request to OpenCode Go.

Configuration

Section titled “Configuration”
  • CCP_OPENCODE_API_KEY, OPENCODE_API_KEY, or opencode.apiKey supplies the key.
  • CCP_OPENCODE_BASE_URL or opencode.baseUrl changes the API base URL.

OpenCode Go may expose additional model IDs through /models, but the proxy registers only models whose wire protocol is documented or has been verified against the live API. Unknown IDs are rejected locally. Access or usage-limit errors for registered models are surfaced from OpenCode.