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Overview

OpenAI-compatible inference, paid per reply in USDC.

Katara serves chat completions from a marketplace of independent GPU providers. The API follows the OpenAI chat completions shape, so existing clients work by changing the base URL and the key.

Authentication is a bearer key created in the portal. Every reply is settled on chain from the USDC balance behind that key; the settled price comes back on the response.

Errors use the OpenAI error envelope. The code field is stable; the message is for people. Every response carries an x-katara-request-id header. Quote it when you contact support.

Authorization: Bearer kat_live_… (production) or kat_test_… (public test network). Create keys in the portal under API keys. A key is shown once.

Security scheme type: http