---
title: "Completes a callback"
method: POST
path: "/automation/actions/callbacks/2026-09/{callbackId}/complete"
tags: ["Callbacks"]
---

# Completes a callback

`POST /automation/actions/callbacks/2026-09/{callbackId}/complete`

## Request

- Base URL: `https://api.hubapi.com`
- URL: `https://api.hubapi.com/automation/actions/callbacks/2026-09/{callbackId}/complete`
- Auth: OAuth 2
  - Authorization code: `https://app.hubspot.com/oauth/authorize`
  - Token URL: `https://api.hubapi.com/oauth/v1/token` scopes: `automation`

Complete a specific blocked action execution by ID.

## Path parameters

- `callbackId` string, required

## Request body

- CallbackCompletionRequest
  - `failureReasonType` string: Indicates the reason for the failure of a callback completion.
  - `outputFields` object, required: Contains the output fields associated with the callback, with each field represented as a key-value pair.
  - `typedOutputs` object, required: Holds the typed outputs related to the callback, structured as an object.

## Response `204`

No content

## Other responses

- `default`: An error occurred.

## Changes

- **2026-10-14** (2026-09) `bfab10ea153c`: 1 warning
  - removed the request property `requestContext`
- **2026-09-23** (2026-09) `a58181316825`: 2 breaking
  - the request property `requestContext/oneOf[subschema #2: AGENTS]/chirpAiContextObject/sensitivity` became required
  - the request property `requestContext/oneOf[subschema #4: STANDALONE]/chirpAiContextObject/sensitivity` became required
- **2026-09-10** (2026-09) `837fcc360f35`: 2 info
  - added the new optional request property `requestContext/oneOf[subschema #2: AGENTS]/chirpAiContextObject/sensitivity`
  - added the new optional request property `requestContext/oneOf[subschema #4: STANDALONE]/chirpAiContextObject/sensitivity`
- **2026-09-03** (2026-09) `ea9a634b183c`: 1 info
  - endpoint added
- **2026-09-03** (2026-09) `c6eb28324e2a`: 1 breaking
  - api path removed without deprecation

[Operation history](https://skmtc.dev/hubspot/apis/automation-actions-v4/changes/automation/actions/callbacks/2026-09/:callbackId/complete/post.md)

---

[API](https://skmtc.dev/hubspot/apis/automation-actions-v4.md) - [All operations](https://skmtc.dev/hubspot/apis/automation-actions-v4/llms.txt) - [OpenAPI document](https://skmtc.dev/hubspot/apis/automation-actions-v4/revisions/bfab10ea153c?raw)