How to connect Reddit to Muse

Connect Muse to Reddit MCP. Post a weekly update to r/marketing, search for trending posts about ai startups, and more using natural language, with authentication handled for you.

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Reddit is a social news platform with thriving user-driven communities (subreddits). It's the go-to place for discussion, content sharing, and viral marketing.

22 Tools

Introduction

Muse is Meta's AI assistant. It can connect to outside tools through custom connectors, which use the Model Context Protocol (MCP).

This guide explains how to connect Reddit to Muse using Composio Connect, which handles OAuth, token refresh, and reliability so you do not have to. You add Composio as a custom connector once, then ask Muse to work with Reddit in plain language.

Also integrate Reddit with

Why use Composio?

  • Cross-app workflows across 1,500+ apps from a single plugin layer.
  • On-demand tool loading so Muse only loads the tools needed for the current task.
  • Programmatic tool calling through a remote workbench for complex, multi-step workflows.
  • Multi-account support so users can connect and switch between multiple accounts for the same app.
  • Shared account access so teams or agents can work through common business accounts and service connections.
  • Managed authentication with OAuth handling, credential storage, and token refresh managed by Composio.
  • Safer credential handling so app credentials stay outside the model context and tool responses.
  • User-level account isolation so actions run against the correct connected account instead of mixing user access.

Connecting Reddit to Muse

You add Composio to Muse once as a custom connector, then connect Reddit from the chat.

1. Ask Muse to connect to Composio

Start a new Muse chat and send this message. Muse builds the connector and shows a button to add your API key.

bash
Create a Custom Connector for the Composio remote MCP server and connect to it:
- Name: Composio
- Transport: remote streamable HTTP
- URL: https://connect.composio.dev/mcp
- Auth: API key sent in the x-consumer-api-key header
Open the secure credentials store so I can enter the API key there, not in this chat. Then list its tools to confirm the connection works.

2. Copy your API key

Open the Muse page in your Composio dashboard and copy your API key. It starts with ck_.

Don't paste it into the chat. It goes in Muse's secure credentials store in the next step.

3. Add your API key in the secure credentials store

Tap the button Muse shows to open Add custom connector, paste your API key, then tap Add. Muse lists the Composio tools once it connects.

Muse secure credentials store with the connect.composio.dev URL, an API Key field, and the Add button

4. Connect your Reddit account

Back in the chat, ask Muse to connect to Reddit or give it any Reddit task.

For example, ask it to:

  • "Post a weekly update to r/marketing"
  • "Search for trending posts about AI startups"
  • "Retrieve comments from your latest Reddit post"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Muse, and your Reddit account is ready to use.

What is the Reddit MCP server, and what's possible with it?

The Reddit MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Reddit account. It provides structured and secure access to Reddit posts, communities, user profiles, and your own content, so your agent can browse sorted posts, find controversial discussions, search for subreddits, review user information, and edit your comments or self-posts on your behalf.

  • Sorted post discovery: Have your agent retrieve Reddit posts sorted by hot, new, top, rising, controversial, or best.
  • Controversial discussion tracking: Let the agent find controversial posts across Reddit for a chosen time period.
  • Subreddit search: Direct your agent to search for communities by words found in their titles and descriptions.
  • User profile research: Instruct your agent to look up a Reddit user and review details such as karma scores and gold status.
  • Comment and self-post editing: Have your agent revise the body text of your existing comments or self-posts.

Way Forward

Now that Reddit is connected, extend your setup by connecting the other apps you already use every day, so Muse can run true cross-app workflows end to end.

  • Connect Calendar to turn threads into scheduled meetings automatically.
  • Connect Slack or Teams to post summaries, approvals, and alerts where your team works.
  • Connect Notion, Linear, Jira, or Asana to convert requests into tickets, tasks, and docs.
  • Connect Drive, Dropbox, or OneDrive to fetch, file, and share attachments without manual steps.

Start with one workflow you do repeatedly, then keep adding apps as you find new handoffs. With everything behind a single connection, Muse can coordinate multiple tools safely and reliably in one conversation.

Troubleshooting

1. Why doesn't Muse show a button to add my API key?

Muse shows the button only when you ask it to open the secure credentials store.

  • Start a new chat.
  • Send the message from step 1 exactly as written.
  • If Muse asks for the key in the chat, do not paste it. Ask Muse to open the secure credentials store.

2. Why does the Composio connection fail after I add my API key?

The key or the connector settings are not correct.

  • Copy the full key from the Composio dashboard. It starts with ck_.
  • Make sure the URL is https://connect.composio.dev/mcp and the header is x-consumer-api-key.
  • Remove the Composio connector in Muse settings, then do steps 1 to 3 again.

3. Why doesn't Muse use the Composio tools for Reddit?

Muse may not pick the Composio connector for the request.

  • Ask Muse to list its Composio tools.
  • Name Composio and Reddit in your request, for example: Use Composio to connect to Reddit.
  • If it still does not work, start a new chat and try again.

4. Why does Muse ask me to connect Reddit again?

Your Reddit connection expired or was removed.

  • Open the link Muse gives you and sign in to Reddit again.
  • Check that the Reddit connection shows as ACTIVE in the Composio dashboard.

5. What do I do if I pasted my API key into the chat?

Treat the key as exposed.

  • Create a new API key in the Composio dashboard and delete the old one.
  • Add the new key in Muse's secure credentials store, not in the chat.
TOOLS

Supported Tools

Every Reddit action and event your agent gets out of the box.

Create a Reddit post

Creates a new text or link post on a specified, existing Reddit subreddit, optionally applying a flair.

Delete Reddit comment

Deletes a Reddit comment, identified by its fullname ID, if it was authored by the authenticated user.

Delete a Reddit post

Permanently and irreversibly deletes a Reddit post by its ID.

Edit comment or post

Edits the body text of the authenticated user's own existing comment or self-post on Reddit; cannot edit link posts or titles.

Get Reddit listing by sort

Tool to retrieve a listing of Reddit posts sorted by the specified criteria (hot, new, top, etc.

Get controversial posts from all subreddits

Tool to retrieve controversial posts from all subreddits with time filters.

Get user preferences

Tool to retrieve preference settings of the logged in user.

Get random Reddit post

Tool to retrieve a random public Reddit post from any subreddit.

Get user information

Retrieves information about a specified Reddit user account, including karma scores and gold status.

Get top posts from subreddit

Tool to retrieve top-rated posts from a subreddit with time filters.

Get OAuth scopes

Tool to retrieve all available OAuth scopes supported by the Reddit API.

Get subreddit rules

Fetch the explicit posting rules for a subreddit to ensure compliance before posting or commenting.

Search subreddits

Tool to search subreddits by title and description.

Get user flair

Fetches the list of user flair assignments for a given subreddit.

Check username availability

Tool to check whether a username is available for registration on Reddit.

List subreddit post flairs

List available link/post flairs for a subreddit (including flair_template_id) so posts can satisfy flair-required validation.

Post a comment

Posts a comment on Reddit, replying to an existing submission (post) or another comment.

Retrieve Comments for a Post

Retrieves all comments for a Reddit post given its base-36 article ID.

Retrieve posts from subreddit

Retrieves posts from a specified, publicly accessible subreddit.

Retrieve specific comment or post

Retrieves detailed information for a single Reddit comment or post using its fullname.

Search across subreddits

Searches Reddit for posts/comments using a query.

Enable or disable inbox replies

Enable or disable inbox replies for a submission or comment.

FAQ

Frequently asked questions

Yes. Muse supports custom connectors that use the Model Context Protocol (MCP). Composio connects as one custom connector over remote streamable HTTP at https://connect.composio.dev/mcp, and gives Muse access to Reddit and 1,500+ other apps.

Copy it from the Composio dashboard. It starts with ck_. Enter it only in Muse's secure credentials store, never in the chat.

Yes. Composio supports multiple connected accounts for the same app. Give each Reddit connection a name, such as work or personal, and tell Muse which one to use.

Tokens, keys, and configuration are encrypted at rest and in transit. Your Composio API key stays in Muse's secure credentials store, not in the chat or the model context. Composio is SOC 2 Type 2 compliant.

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