---
title: "Decline Proposal"
method: POST
path: "/v1/native/proposals/{proposal_id}/decline"
tags: ["native"]
---

# Decline Proposal

`POST /v1/native/proposals/{proposal_id}/decline`

## Request

- Base URL: `https://api.mundane.market` (the document declares no server; this is the origin it was published from)
- URL: `https://api.mundane.market/v1/native/proposals/{proposal_id}/decline`
- Auth: none declared

Not this one. Closes the card and tells the agent, in the customer's
own thread, that they want something changed -- so it asks what.

## Path parameters

- `proposal_id` string, required

## Headers

- `authorization` string

## Cookies

- `mundane_principal_session` string, nullable

## Response `200`

Successful Response

- object

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/mundane/apis/mundane-api.md) · [All operations](https://skmtc.dev/mundane/apis/mundane-api/llms.txt) · [OpenAPI document](https://skmtc.dev/mundane/apis/mundane-api/revisions/f1cba6e69834?raw)