---
title: "POST /v1/{+app}:exchangeRecaptchaV3Token"
method: POST
path: "/v1/{+app}:exchangeRecaptchaV3Token"
tags: ["projects"]
---

# POST /v1/{+app}:exchangeRecaptchaV3Token

`POST /v1/{+app}:exchangeRecaptchaV3Token`

Validates a [reCAPTCHA v3 response token](https://developers.google.com/recaptcha/docs/v3). If valid, returns an AppCheckToken.

## Path parameters

- `app` string, required

## Request body

- GoogleFirebaseAppcheckV1ExchangeRecaptchaV3TokenRequest — Request message for the ExchangeRecaptchaV3Token method.
  - `limitedUse` boolean — Specifies whether this attestation is for use in a *limited use* (`true`) or *session based* (`false`) context. To enable this attestation to be used with the *replay protection* feature, set this to `true`. The default value is `false`.
  - `recaptchaV3Token` string — Required. The reCAPTCHA token as returned by the [reCAPTCHA v3 JavaScript API](https://developers.google.com/recaptcha/docs/v3).

## Response `200`

Successful response

---

[API](https://skmtc.net/google/apis/firebaseappcheck.md) · [All operations](https://skmtc.net/google/apis/firebaseappcheck/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/google/firebaseappcheck/revisions/b321501ef5a5/schema)