---
title: "Block Conversation"
method: POST
path: "/internal-blocklist/conversations/{conversation_id}/block"
tags: ["internal-blocklist"]
---

# Block Conversation

`POST /internal-blocklist/conversations/{conversation_id}/block`

Block the sender, mark their followups lost, turn the AI off and archive the thread.

## Path parameters

- `conversation_id` string, required

## Request body

- BlockConversationRequest — spam drops the number's inbound; do_not_contact blocks the customer's outbound.
  - `mode` 'spam' | 'do_not_contact'
  - `note` string, nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

## Changes

- **2026-09-23** `d1993647e543` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/noso/apis/crucible-backend-api/changes/internal-blocklist/conversations/:conversation_id/block/post.md)

---

[API](https://skmtc.dev/noso/apis/crucible-backend-api.md) · [All operations](https://skmtc.dev/noso/apis/crucible-backend-api/llms.txt) · [OpenAPI document](https://skmtc.dev/noso/apis/crucible-backend-api/revisions/d1993647e543?raw)