---
title: "Respond to 3DS verification"
method: POST
path: "/cards/{cardId}/3ds-answer/{initiateActionId}"
tags: ["3DS Forwarding"]
---

# Respond to 3DS verification

`POST /cards/{cardId}/3ds-answer/{initiateActionId}`

## Request

- Base URL: `https://sandbox.api.caas.reap.global`
- URL: `https://sandbox.api.caas.reap.global/cards/{cardId}/3ds-answer/{initiateActionId}`
- Auth: API key in header `x-reap-api-key`
- TypeScript: <https://skmtc.dev/reap-global/apis/reap-api/docs/cards/:cardId/3ds-answer/:initiateActionId/post.ts> (a function with typed inputs; its response is checked against the schema)

## Path parameters

- `cardId` string, uuid, required
- `initiateActionId` string, uuid, required

## Headers

- `Accept-Version` string, required: Specifies the API version to use for this request.

## Request body

- object
  - `approve` boolean, required: Indicates whether the transaction will be approved following your system’s verification of the cardholder’s identity for Reap to further process. Possible values: **true**: Your system approves the transaction after successful verification. **false**: Your system declines the transaction after unsuccessful verification.

## Response `200`

3DS security question answered successfully

## Other responses

- `403`: Forbidden
- `404`: Card or Action ID not found
- `406`: Not Acceptable

## Changes

- **2026-11-03** `beb4b8d4eb01`: 1 info
  - added the non-success response with the status `403`

[Operation history](https://skmtc.dev/reap-global/apis/reap-api/changes/cards/:cardId/3ds-answer/:initiateActionId/post.md)

---

[API](https://skmtc.dev/reap-global/apis/reap-api.md) - [All operations](https://skmtc.dev/reap-global/apis/reap-api/llms.txt) - [OpenAPI document](https://skmtc.dev/reap-global/apis/reap-api/revisions/beb4b8d4eb01?raw)