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One base URL, three wire formats, one key.

blastrouter.com speaks the Anthropic, OpenAI and Gemini wire formats behind https://api.blastrouter.com. Send the credential the SDK you already use expects: x-api-key (Anthropic), Authorization: Bearer (OpenAI) or x-goog-api-key (Gemini). The key is the only credential; keep it on your server.

Start here

• Anthropic SDK and Claude Code — two environment variables.
• OpenAI SDK — a base URL and a key.
• Gemini — the key in a header.

Reference

• Endpoints — every route, and how each one bills.
• Models — the live catalog, with rates.
• Errors — envelopes and status codes.
• Limits — budgets, admission and top-ups.
• Realtime — WebSocket sessions.