# Volcano Engine Ark - Coding Plan (Anthropic-compatible)

## Endpoint
POST https://ark.cn-beijing.volces.com/api/coding/v1/messages

## Auth
Header: x-api-key: <UUID>
Header: anthropic-version: 2023-06-01

## Usable Keys & Models

### Key: 209bcbe8-3cdf-4397-b13c-2323e481af82
Source: https://github.com/LiuTianjie/yishu-knowledge/blob/fa0d5b52bc8f2e255aca361004ada0fca37dfc27/.env

Models (all confirmed usable):
- claude-sonnet-4-6
- claude-opus-4-6
- claude-haiku-3-5
- claude-3-5-haiku-20241022
- claude-3-haiku-20240307
- claude-sonnet-4-20250514
- claude-opus-4-20250514
- claude-3-7-sonnet-20250219
- doubao-seed-2-0-pro-260215

## Usage Example
```bash
curl -s https://ark.cn-beijing.volces.com/api/coding/v1/messages \
  -H "x-api-key: 209bcbe8-3cdf-4397-b13c-2323e481af82" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-sonnet-4-6","messages":[{"role":"user","content":"hi"}],"max_tokens":100}'
```