Messages

The OpenAPI 3.1 document is the full description, including schemas:

https://router.inference.ai.exchange/v1/openapi.json

POST /v1/messages

Buy one message at auction, in the Anthropic Messages format.

Point an Anthropic client at the router. The smallest request is {"model": "liquid.auto", "max_tokens": 256, "messages": [{"role": "user", "content": "Hello"}]}. Send the key as x-api-key or as a bearer token. Put purchasing rules in the exchange field, as on POST /v1/chat/completions.

The router translates the request to the Chat Completions shape and runs the same auction. system becomes the first message. stop_sequences becomes stop. thinking stays a token budget.

The exchange block is on the message, or on the last event of a stream. The headers x-liquid-job-id and x-liquid-cap-usd arrive before the first token.

POST /v1/messages/count_tokens

Estimate the input tokens of a Messages request.

The count is the estimate that the exchange prices with. It is not the count of a provider tokenizer.