---
title: "Auth Link (Plaid)"
method: POST
path: "/auth/plaid/link"
---

# Auth Link (Plaid)

`POST /auth/plaid/link`

## Request body

- PlaidLinkBodySchema
  - `userId` string
  - `language` string
  - `accessToken` string — Used when initiating the reconnect flow

## Response `200`

Retrieve Link

- PlaidLinkSchema
  - `data` object, required
    - `link_token` string, required
    - `expiration` string, required

## Other responses

- `400` — Returns an error

## Changes

- **2024-07-23** `1515e7c2644a` — 1 breaking, 1 warning
  - the `code` response's property type/format changed from `number`/`` to `string`/`` for status `400`
  - removed the optional property `details` from the response with the `400` status
- **2024-07-23** `85b4f43c2bb3` — 2 info
  - added the optional property `details` to the response with the `400` status
  - added the required property `requestId` to the response with the `400` status
- **2024-07-20** `39339a4dfed3` — 1 warning, 1 info
  - removed the request property `routingNumber`
  - added the new optional request property `accessToken`
- **2024-07-17** `13b5e3e3255c` — 1 info
  - added the new optional request property `routingNumber`
- **2024-07-15** `b093a3bf1c7b` — 2 info
  - the request property `language` became optional
  - the request property `userId` became optional

[Full history](https://skmtc.dev/midday-ai/apis/midday-engine-api/changes/auth/plaid/link/post.md)

---

[API](https://skmtc.dev/midday-ai/apis/midday-engine-api.md) · [All operations](https://skmtc.dev/midday-ai/apis/midday-engine-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/midday-ai/midday-engine-api/revisions/bf3c1ab4d60d/schema)