> ## Documentation Index
> Fetch the complete documentation index at: https://api-docs-v3.openfx.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> OpenFX v2 gives financial institutions programmatic access to FX and stablecoin liquidity with same-day settlement.

<Note>
  **v3 is in preview.** If you're starting a new integration, consider [migrating to v3](/v3/migration-from-v2) — v3 introduces stable error codes, bare-resource responses, and a `/v3/fx/` surface.
</Note>

OpenFX is on a mission to **move money as freely as data, unrestricted by time zones, banking hours, or legacy systems.**

We provide financial institutions with access to FX and stablecoin liquidity and same-day settlements globally. Traders and developers can use the OpenFX API suite to automate the end-to-end trading and settlement process: deposit detection, continuous quote streaming, low-latency trade execution, and settlement for multiple fiat currencies and stablecoins.

<Note>
  v2 is the current generation of the OpenFX API. If you are integrating from v1, see the [migration guide](/v2/migration-v1-to-v2) for the breaking changes (most notably required `Idempotency-Key` headers on POST endpoints).
</Note>

## Why OpenFX?

Financial institutions benefit from:

* Access to multiple currency pairs on a single platform at institutional exchange rates
* Trading without the need to pre-fund accounts on the platform
* Same-day (T0) settlement into web3 wallets and bank accounts globally
* 24/7 conversion availability with always-on liquidity and support

## Who we serve

OpenFX APIs are used by financial services institutions and fintechs across the following segments.

### Remittance firms

* Capture margin improvement through institutional FX rates that beat traditional banking spreads.
* Improve balance-sheet efficiency by compressing settlement cycles to same-day execution.
* Activate new corridors without capital-intensive pre-funding.

### Neobanks

* Offer customers FX conversion rates backed by institutional liquidity.
* Simplify global treasury operations with multi-currency holdings and conversions.
* Equip trade-operations teams with intelligent routing, cash management, and liquidity control.

### Payment processors

* Reduce payment processing costs by leveraging stablecoin infrastructure and local-currency settlement.
* Move funds 24/7 across weekends, holidays, and non-banking hours.
* Deliver near-instant global payment experiences.

### Neo-brokers

* Access stablecoin-to-fiat exchange rates through direct connectivity with stablecoin issuers.
* Eliminate unnecessary conversion steps by tapping local fiat-stablecoin liquidity channels.
* Manage liquidity across 9+ blockchain networks without per-chain complexity.

### Global payroll companies

* Distribute payroll at competitive FX rates, lowering transaction costs.
* Settle payroll via stablecoin and fiat rails for improved reliability.
* Reduce operational overhead by removing global pre-funding requirements.

## Next steps

<Card title="Authenticate" icon="key" href="/v2/authentication">
  Generate an ES256-signed JWT bearer token to call any v2 endpoint.
</Card>

<Card title="Browse the API" icon="code" href="/v2/overview">
  See every v2 endpoint grouped by domain.
</Card>

<Card title="Test in Sandbox" icon="flask" href="/v2/sandbox">
  Validate your integration against the isolated Sandbox environment before going live.
</Card>