---
title: "Estimate SPEI pay-in"
method: GET
path: "/money/payins/estimate"
tags: ["money", "payins"]
---

# Estimate SPEI pay-in

`GET /money/payins/estimate`

## Request

- Base URL: `https://api.stablesea.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.stablesea.com/money/payins/estimate`
- Auth: none declared

Returns the estimated USDC settlement for a prospective MXN SPEI pay-in. Read-only; gated on PermKYBLocked.

## Query parameters

- `amount` string

## Response `200`

OK

- PayinsEstimatePayinOutput
  - `estimate_available` boolean
  - `estimated_usdc` string
  - `estimated_usdc_view` MoneyfmtMoneyAmountView
    - `float` number, double, required
    - `formatted` MoneyfmtFormattedMoneyAmountView, required
      - `compact` string, required
      - `currency_sign` string, required
      - `currency_sign_position` string, required
      - `full` string, required
    - `precise` string, required
    - `symbol` string, required
    - `zero` boolean, required
  - `rate` string
  - `source` string

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `403`: Forbidden
- `default`: Error response.

## Changes

- **2026-10-29** `e003c8a67b62`: 4 info
  - added the optional property `error/authorization` to the response with the `400` status
  - added the optional property `error/authorization` to the response with the `401` status
  - added the optional property `error/authorization` to the response with the `403` status
  - added the optional property `error/authorization` to the response with the `default` status
- **2026-10-01** `94cae284e871`: 3 info
  - added the non-success response with the status `400`
  - added the non-success response with the status `401`
  - added the non-success response with the status `403`
- **2026-09-01** `f2d9f80610d9`: 1 info
  - added the optional property `error/api_client_id` to the response with the `default` status
- **2026-08-26** `533de842b808`: 1 warning
  - for the `query` request parameter `amount`, the maxLength was set to `64`

[Operation history](https://skmtc.dev/stablesea/apis/stable-sea-backend/changes/money/payins/estimate/get.md)

---

[API](https://skmtc.dev/stablesea/apis/stable-sea-backend.md) - [All operations](https://skmtc.dev/stablesea/apis/stable-sea-backend/llms.txt) - [OpenAPI document](https://skmtc.dev/stablesea/apis/stable-sea-backend/revisions/772c80d83658?raw)