---
title: "Add a new topic"
method: POST
path: "/api/v1/messages/topics"
tags: ["Message", "Topic"]
---

# Add a new topic

`POST /api/v1/messages/topics`

Add a new topic to the system's whitelist.

## Request body

- string, byte — The topic to add

## Response `201`

Topic added successfully

## Changes

- **2025-04-10** `e2165a0513dc` — 1 info
  - endpoint added
- **2023-10-26** `1c37c167d50d` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/threefoldtech/apis/mycelium-management/changes/api/v1/messages/topics/post.md)

---

[API](https://skmtc.dev/threefoldtech/apis/mycelium-management.md) · [All operations](https://skmtc.dev/threefoldtech/apis/mycelium-management/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/threefoldtech/mycelium-management/revisions/65042c1a7b84/schema)