> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fiet.finance/llms.txt
> Use this file to discover all available pages before exploring further.

# Fiet Business Trading API

> Fiat-fiat, fiat-crypto and crypto-crypto Fiet markets in an API.

## What is the Fiet Business Trading API?

Discover markets, get live quotes, then obtain and execute on token swap or fiat payment instructions. Designed for fintechs and businesses integrating moving global currencies.

<Note>
  The Fiet Trading API is **not yet publicly released**. Expect initial
  availability in **Q2 2026**. <br />
  **API design and documentation are subject to change.**
</Note>

The **Fiet Trading API** gives businesses and fintechs a single hosted API surface for:

* **Discovering supported markets** (chains, tokens, corridors)
* **Fetching live derived quotes** from current on-chain state
* **Generating swap instructions** (calldata + constraints) for you to execute
* **Producing multi-step payment plans** for cross-border and off-ramp workflows
* **Sending Digital Collect requests** where recipients complete a short, Fiet-hosted collection flow

The Trading API is **non-custodial infrastructure**:

* It **does not** sign transactions
* It **does not** broadcast transactions
* It has **no access** to your keys or customer funds

## What you can build

<CardGroup cols={2}>
  <Card title="Market discovery" href="/business/endpoint/markets">
    Populate chain/token selectors and validate corridors before quoting or
    payments.
  </Card>

  <Card title="Live quotes" href="/business/endpoint/quote">
    Request derived pricing for swaps using `EXACT_IN` or `EXACT_OUT` semantics.
  </Card>

  <Card title="Stablecoin or Token swaps" href="/business/endpoint/swap">
    Get calldata and constraints as ordered instructions for client-side
    execution.
  </Card>

  <Card title="Cross-border payments" href="/business/endpoint/payments">
    Orchestrate deposit, swap, and payout steps with stable references for
    reconciliation.
  </Card>
</CardGroup>

## Architecture at a glance

Fiet provides the **planning** (quotes, instructions, plans). **You** control **execution** (signing and broadcasting), either with your own wallet infrastructure or via the **Client Node** (coming soon).

For the full workflow diagrams (including Digital Collect recipient experience), see the Architecture page:

* [Business Trading API architecture](/business/architecture)

## Quick links

<CardGroup cols={2}>
  <Card title="Architecture" href="/business/architecture">
    Understand the end-to-end experience for swaps, payments, and Digital
    Collect.
  </Card>

  <Card title="Authentication" href="/business/authentication">
    How to authenticate requests and handle common errors.
  </Card>

  <Card title="Core concepts" href="/business/core-concepts">
    Quotes, instructions, corridors, plans, and step lifecycles.
  </Card>

  <Card title="Your first quote" href="/business/endpoint/quote">
    Make a derived quote request and interpret the response.
  </Card>
</CardGroup>