posterly

MCP connector

Discord MCP server

Post to Discord channels from Claude or ChatGPT through a webhook, with no bot to install.

This is the posterly MCP server, used for Discord. The same connection works from Claude, ChatGPT, Cursor, and other MCP clients. It is not a separate Discord-only download.

Get Starter + API · $10/moHow to connect the MCP server

What you can do on Discord

Discord posting is built on webhooks, so there is nothing to install and no bot to approve. Create a webhook in a channel's settings, give posterly the URL, and your AI client can post text up to 2,000 characters, images, videos, and messages with up to 10 attachments to that channel.

Each webhook points at one channel, so connect one for every channel you want to post to, such as an announcements channel and a releases channel, and name the one you want in your request. Discord markdown works in the message, and attachments can carry alt text. Because the webhook is yours, you can revoke it from the channel settings whenever you like.

It suits scheduled announcements, release notes, and community updates that you would otherwise paste in by hand. A common pattern is to draft one announcement and have Claude adapt it for Discord, Slack, and Telegram together. Posting is one way: the MCP server publishes to the channel and does not read replies or analytics.

  • Text posts
  • Images
  • Video
  • Multi-image

Post types: text, image, video, carousel. Analytics are not read for this platform.

Tools

These are the tools your AI client uses for Discord. Ask it to call list_platforms with view=schema and the account_id before it sets anything specific to Discord.

Account and connection

  • whoamiWho am I

  • list_accountsConnected accounts

  • list_platformsPlatforms

  • create_connect_sessionStart a connect session

  • connect_accountConnect with credentials

Posts

  • validate_postValidate a post

  • create_postCreate a post

    Show the caption, account, and time, then wait for confirmation before confirm=true.

  • create_posts_batchCreate posts in bulk

    1 to 25 posts in one confirmed request.

  • update_postEdit a post

    Show the caption, account, and time, then wait for confirmation before confirm=true.

  • list_postsPosts

  • get_postOne post

  • delete_postDelete posts

    Live removal needs an eligible connection and confirm_published. A refusal keeps the posterly record.

  • find_available_slotFind a free slot

  • generate_captionsGenerate captions

Media

  • upload_mediaUpload media

    Hosted requests are about 4MB, so this path is for small files. Large files use create_signed_upload or create_media_drop.

  • create_signed_uploadSigned upload link

  • create_media_dropMedia drop link

  • list_mediaMedia library

How to connect

  1. Add the hosted server in Claude, ChatGPT, Cursor, or another MCP client. Server URL: https://www.poster.ly/api/mcp. Sign in with posterly OAuth and press Allow. Use the www host. In ChatGPT, write actions need a Business, Enterprise, or Edu plan.
  2. Or, in a client that can run a local process (Cursor, Claude Code, Windsurf, and similar), use npx -y posterly-mcp-server@latest with a POSTERLY_API_KEY placeholder in that client's MCP config.
  3. Call whoami and list_accounts so you know which workspace the client is using.
  4. Connect Discord with the method below, then call list_platforms with view=schema and the account_id.

Discord

Paste your credentials into the dashboard form. You can also give them to your AI client, but anything you type into a chat becomes part of that chat history.

  • Webhook URL (required): Discord channel webhook URL from channel settings, Integrations, Webhooks.
Connect Discord in the dashboard

Example prompts

  • Post the changelog for v2.4 to our Discord announcements channel on Thursday at 4pm, formatted with Discord markdown.
  • Send this screenshot and a short note to the #showcase channel on Discord tomorrow morning.
  • Schedule a reminder in our Discord events channel for Friday at noon about the community call.

Discord limits

Caption or text
2,000 characters.
Media count
Up to 10 media items.

Request rates depend on your plan. The posterly MCP page lists them.

Pricing

API and MCP access is an add-on to any posterly plan. Starter plus API is $10 a month, charged now with no free trial on this checkout.

Get Starter + API · $10/moSee every plan

FAQ

What is the Discord MCP server?

It is the posterly MCP server, not a separate product. Connect it once and the same connection covers Discord and 17 other platforms, from Claude, ChatGPT, Cursor, and other MCP clients.

How do I connect Discord?

Add the hosted server at https://www.poster.ly/api/mcp and sign in with posterly, or run npx -y posterly-mcp-server@latest in a client that can start a local process. Discord: Paste your credentials into the dashboard form. You can also give them to your AI client, but anything you type into a chat becomes part of that chat history.

Do I need to install a bot to post to Discord?

No. Each channel connects with a webhook URL that you create in the channel settings under Integrations, then Webhooks. There is no OAuth review and nothing to add to your server.

Can Claude post images and files to Discord?

Yes. A message can carry up to 10 attachments, with alt text, alongside text of up to 2,000 characters.

Keep reading

MCP

posterly MCP server

Hosted OAuth setup, the local npm package, and the full tool list.

Scheduler

Discord scheduler

Schedule Discord from the posterly calendar and composer.

Guide

Discord guide

Read the long Discord guide, then come back to connect it.

Pricing

posterly pricing

Compare plans, then add API and MCP at checkout.

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