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

# Release notes - StableFX - 2025

> 2025 release notes for StableFX

## November 2025

<Update label="2025.11.13">
  Launched StableFX, an institutional-grade stablecoin FX engine built on Arc that
  combines Request-for-Quote (RFQ) execution with onchain settlement.

  ### Documentation additions

  Added the following documentation to support the StableFX launch:

  * [StableFX overview](/stablefx)
  * [StableFX technical guide](/stablefx/concepts/technical-guide)
  * [Create an FX trade as a taker](/stablefx/quickstarts/fx-trade-taker)
  * [Fulfill an FX trade as a maker](/stablefx/quickstarts/fx-trade-maker)
  * [Grant USDC Allowance with Permit2](/stablefx/howtos/grant-usdc-allowance-permit2)
  * [Test StableFX Integration as a Taker](/stablefx/tutorials/test-stablefx-integration-taker)
  * [Test StableFX Integration as a Maker](/stablefx/tutorials/test-stablefx-integration-maker)
  * [StableFX contract interfaces](/stablefx/references/contract-interfaces)
  * [StableFX supported currencies](/stablefx/references/supported-currencies)

  ### API additions

  Added the following StableFX API endpoints:

  * [`POST /v1/stablefx/quotes`](/api-reference/stablefx/all/create-quote)
  * [`POST /v1/stablefx/trades`](/api-reference/stablefx/all/create-trade)
  * [`GET /v1/stablefx/trades`](/api-reference/stablefx/all/list-trades)
  * [`GET /v1/stablefx/trades/{tradeId}`](/api-reference/stablefx/all/get-trade-by-id)
  * [`POST /v1/stablefx/trades/{tradeId}/signature-data`](/api-reference/stablefx/all/generate-trade-signature-data)
  * [`POST /v1/stablefx/trades/{tradeId}/signatures`](/api-reference/stablefx/all/register-trade-signature)
  * [`POST /v1/stablefx/trades/{tradeId}/fund`](/api-reference/stablefx/all/fund-trade)
</Update>