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Authentication: signed Partner API request.

Request body

direction is on_ramp or off_ramp; direct on_chain_swap estimates are not available on this endpoint. Send exactly one of amount_in or amount_out.
Optional fields are expected_amount_in, expected_amount_out, required_badges, required_reputation, deadline, and description.

Response

An estimate does not reserve a route or authorize movement of funds. Call it near checkout, then create the semantic payment once the user commits.