---
title: "Estimate FX swap"
method: POST
path: "/api/v1/fx/estimate"
tags: ["FX"]
---

# Estimate FX swap

`POST /api/v1/fx/estimate`

Creates a swap estimation with deposit address for Circle FX stablecoin swap

## Response `200`

OK

- ResponseFxEstimateResponse
  - `deposit_address` string, required — Deprecated: still populated for backward compatibility, but consumers should read destination_address — this field carries the address where source tokens must be sent, which is now exposed as destination_address.
  - `destination_address` string, required — DestinationAddress is the address where the client should send the source tokens. Preferred field; deposit_address mirrors the same value for backward compatibility.
  - `destination_asset_address` string, required — DestinationAssetAddress is the contract address of the token to be received
  - `destination_asset_amount` string, required — DestinationAssetAmount is the amount of destination token to be received (in decimal format)
  - `estimation_id` string, required — EstimationId is the unique identifier for this estimation, used when executing the swap
  - `expiration_time` string, required — ExpirationTime is the RFC3339 timestamp after which this estimation expires
  - `source_asset_address` string, required — SourceAssetAddress is the contract address of the token being swapped from
  - `source_asset_amount` string, required — SourceAssetAmount is the amount of source token to be swapped (in decimal format)
  - `trade_rate` string, required — TradeRate is the exchange rate applied to the swap

## Other responses

- `400` — Bad Request
- `500` — Internal Server Error

---

[API](https://skmtc.dev/wirexapp/apis/wirex-baas-api.md) · [All operations](https://skmtc.dev/wirexapp/apis/wirex-baas-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/wirexapp/wirex-baas-api/revisions/b95a180790b1/schema)