codingworkflow

Claude Code API — Development skill for Claude Code

Development community

OpenAI-compatible API gateway for Claude Code CLI.

How to install Claude Code API

This entry records only its repository, not the path inside it, so there is no exact command to give. Open codingworkflow/claude-code-api and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Claude Code API does

OpenAI-compatible API gateway for Claude Code CLI.

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README

Claude Code API Gateway

OpenAI-compatible API gateway for Claude Code CLI.

What You Get

OpenAI-style endpoints (/v1/chat/completions, /v1/models, sessions/projects APIs)
Streaming and non-streaming chat completions
Claude model aliases and fallback behavior
Optional model field: if omitted, CLI default model is used

Quick Start (Linux/macOS)

git clone https://github.com/codingworkflow/claude-code-api
cd claude-code-api
make install
make start

Server URLs:

API: http://localhost:8000
OpenAPI docs: http://localhost:8000/docs
Health: http://localhost:8000/health

Quick Start (Windows)

Use the provided wrappers:

make.bat install
start.bat

Notes:

start.bat starts the API in dev mode.
make.bat provides common project commands.
Claude Code CLI support on Windows may require WSL depending on your local setup.

Supported Models

Model config is in `claude_code_api/config/models.json`. Override with `CLAUDE_CODE_API_MODELS_PATH`.

claude-opus-4-6-20260205
claude-opus-4-5-20251101
claude-sonnet-4-5-20250929
claude-haiku-4-5-20251001

Alias/fallback behavior:

model is optional in /v1/chat/completions.
opus, claude-opus-latest, claude-opus-4-6 resolve to Opus 4.6.
If Opus 4.6 is rejected at runtime, gateway retries once with latest configured Opus 4.5.
If all attempted models are rejected, API returns 400 with error.code = model_not_supported.

API Usage

Chat completion:

curl -X POST http://localhost:8000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
    "messages": [
      {"role": "user", "content": "Hello"}
    ]
  }'

List models:

curl http://localhost:8000/v1/models

Streaming:

curl -X POST http://localhost:8000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-5-20250929",
    "messages": [{"role": "user", "content": "Tell me a joke"}],
    "str