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API Keys
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Anthropic Messages API
https://api.crabcode.ai/v1/messages OpenAI Chat Completions API
https://api.crabcode.ai/v1/chat/completions Use with Claude Code
Point Claude Code (or any Anthropic SDK) at Crab Code with two env vars:
1. Export the env vars
# macOS / Linux
export ANTHROPIC_BASE_URL=https://api.crabcode.ai
export ANTHROPIC_API_KEY=sk-crab-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 2. Run Claude Code
claude
From any project directory, launch Claude Code as usual. Requests are billed against your Crab Code balance.
The key works with both header conventions: x-api-key: sk-crab-… (Anthropic SDKs, Claude Code) and Authorization: Bearer sk-crab-… (OpenAI-compat, curl, custom clients).
Top Up
You'll receive: - tokens
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1 Approve spending
2 Purchase tokens
3 On-chain verification