Overview - QASH API Reference

These endpoints are public and do not require authentication.

Use this API section to list supported assets and create time-bound exchange quotes between fiat and supported digital assets. QASH retrieves the TRM in real time from SETICAP, the official source for the Colombian interbank market, and applies the effective spread before returning the final rate.

Endpoints

Method	Endpoint	Description
`GET`	`/api/v1/exchanges/assets`	Return the assets available for conversion
`POST`	`/api/v1/exchanges/quote/public`	Return a real-time public quote between two supported assets

Supported conversion pairs

From	To	Supported
`USD`	`COP`	Yes
`COP`	`USD`	Yes

Rate calculation

For TRM-based conversions, QASH applies a spread before returning the final effective rate.

Direction	Formula
USD-denominated asset to COP leg	`rate = TRM × (1 − spread)`
COP leg to USD-denominated asset	`rate = 1 / (TRM × (1 + spread))`

The rate field in the response already includes the effective spread applied by QASH.

Error handling

HTTP status	Cause
`400`	Missing fields or invalid `fromAmount`
`503`	TRM unavailable because SETICAP is down and the cache has expired
`500`	Internal service error

Quotes expire after 30 seconds. Request a new quote immediately before processing an operation.