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Introduction

The Coins API is a product extension of the Daya API. It adds digital-asset market data, balances, portfolio, transactions, quote-based trading, and crypto and fiat withdrawals to the same Daya account and the same API key you already use.
Coins is not a separate platform with its own credentials. It uses your existing Daya API key with Coins scopes. If you already integrate the Daya API, you only add the Coins surface — nothing about your key issuance or auth changes.

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What you can build

Trading experiences

Quote an asset pair, then accept the quote to place a buy or sell order.

Portfolio dashboards

Read consolidated balances, holdings, and 24h stats to render a portfolio view.

Funding flows

Surface supported crypto and fiat deposit options so customers can fund.

Treasury and payouts

Manage saved addresses and bank accounts, then create crypto or fiat withdrawals.

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Base URL

All Coins endpoints are served under the Coins path of the Daya API:

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Authentication in one line

Send your Daya API key in the X-API-Key header. The key must carry the relevant Coins scope (coins:read, coins:trade, coins:write, or coins:withdraw). See Authentication.

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Two quote types

Coins uses two separate, short-lived quotes. Each response returns an id; pass it back as quote_id to execute:
  • POST /quote — a trade quote between two coins assets. Execute it with POST /orders.
  • POST /fx/quotes — a USD→NGN conversion quote for cashing out. Execute it with POST /fiat-withdrawals.
Both expire after a few seconds, so quote close to the point of execution — an expired quote returns 410 Gone, a reused one 409 Conflict. Trade-quote amounts are shown fee-inclusive; the taker fee settles as a separate component at execution.
The execution venue is an internal detail and is never part of the API contract. You request the economic result of a trade; Daya handles routing and settlement.

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Next steps

Quickstart

Make your first authenticated Coins call end to end.

Authentication

The shared Daya API key model and Coins scopes.

Concepts

Balances, quotes, orders, transactions, and withdrawals.

API Reference

Every Coins endpoint, generated from the OpenAPI spec.