---
title: "Send two-factor code."
method: POST
path: "/tf-validate"
---

# Send two-factor code.

`POST /tf-validate`

## Query parameters

- `include_auth_token` string

## Request body

- object
  - `code` string — The code sent via the configured method (e.g. SMS, email, authenticator).

## Response `200`

Two-Factor code validation response.

- object — The code was correct. If this part of user authentication, the caller is now signed in. If this was part of changing a two-factor method, that was successful.
  - `meta` object, required
    - `code` integer, required — Http status code
  - `response` object, required
    - `user` object — By default an empty dictionary is returned. However by overriding _User::get_security_payload()_ any attributes of the User model can be returned.
      - `authentication_token` string — Token to be used in future token-based API calls. Note this only returned from those APIs that accept a 'include_auth_token' query param.
      - `refresh_token` string — A refresh token that can be used to get a new auth token. This is only returned if the application has enabled refresh tokens.
    - `csrf_token` string — Session CSRF token

## Other responses

- `302` — User successfully sent code when using form based request.
- `400` — Errors while validating attributes.

## Changes

- **2026-05-02** `21452a793d1a` — 1 info
  - added the optional property `allOf[#/components/schemas/JsonResponseWithToken]/allOf[subschema #2]/response/user/refresh_token` to the response with the `200` status
- **2023-10-22** `b647a0e917e6` — 1 breaking, 6 info
  - the response's body type/format changed from ``/`` to `object`/`` for status `400`
  - added the new optional `query` request parameter `include_auth_token`
  - added `#/components/schemas/JsonResponseWithToken` to the response body `allOf` list for the response status `200`
  - removed `#/components/schemas/BaseJsonResponse, subschema #2` from the response body `allOf` list for the response status `400`
  - …3 more
- **2023-07-25** `205261c882e3` — 1 warning
  - removed the optional property `allOf[#/components/schemas/TfValidateJsonResponse]/tf_validity_token` from the response with the `200` status
- **2022-07-22** `4b3ea48a957a` — 1 breaking, 2 warning, 2 info
  - the `allOf[subschema #2]/response/errors` response's property type/format changed from `object`/`` to `array`/`` for status `400`
  - removed the optional property `allOf[subschema #2]/response/error` from the response with the `400` status
  - removed the optional property `allOf[subschema #2]/response/errors/field-name` from the response with the `400` status
  - added the optional property `allOf[subschema #2]/response/field_errors` to the response with the `400` status
  - …1 more
- …earlier changes not shown

[Full history](https://skmtc.dev/pallets-eco/apis/flask-security-external-api/changes/tf-validate/post.md)

---

[API](https://skmtc.dev/pallets-eco/apis/flask-security-external-api.md) · [All operations](https://skmtc.dev/pallets-eco/apis/flask-security-external-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/pallets-eco/flask-security-external-api/revisions/ee92f388dafa/schema)