---
title: "Reject Plan"
method: POST
path: "/plans/{plan_id}/reject"
tags: ["plans"]
---

# Reject Plan

`POST /plans/{plan_id}/reject`

Reject a plan: cancels all its PLANNED tasks.

Rejected tasks are moved to CANCELLED status so they never execute.

## Path parameters

- `plan_id` string, required

## Request body

- PlanDecisionRequest — Body for POST /plans/{plan_id}/approve or /reject.
  - `reason` string

## Response `200`

Successful Response

- object

## Other responses

- `404` — Plan not found, or plan mode is not enabled on this server
- `409` — Plan already decided, or the plan changed after it was rendered for review
- `422` — Validation Error

## Changes

- **2026-07-26** `86f514b4e920` — 1 info
  - removed the non-success response with the status `503`

[Change history](https://skmtc.dev/sipyourdrink-ltd/apis/bernstein-task-server/changes/plans/:plan_id/reject/post.md)

---

[API](https://skmtc.dev/sipyourdrink-ltd/apis/bernstein-task-server.md) · [All operations](https://skmtc.dev/sipyourdrink-ltd/apis/bernstein-task-server/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/sipyourdrink-ltd/bernstein-task-server/revisions/fa7b00b782fa/schema)