posterly

MCP connector

Dev.to MCP server

Cross-post Markdown articles to DEV Community with tags and a canonical URL from Claude or ChatGPT.

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

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

What you can do on Dev.to

Dev.to posts are articles in the DEV Community, so your AI client writes and publishes a full Markdown article, not a short update. The article needs a title, which comes from the title setting or from the first line of your caption, and the body has room for 100,000 characters.

The setting that matters most is the canonical URL. If the article first appeared on your own blog, set it and Dev.to points search engines back to your own blog as the original, which makes cross-posting safe for SEO. Tags are capped at 4 and must be lowercase letters and numbers. Your first attached image is the cover, and the rest are placed in the article body.

Articles go live at the scheduled time rather than saving as a draft, so read the preview before you confirm. Connect with an API key from your DEV Community settings. Video is not supported, and the MCP server does not read Dev.to analytics.

  • Text posts
  • Images
  • Multi-image
  • Custom cover
  • Extra tagging tools

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

Tools

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

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 Dev.to with the method below, then call list_platforms with view=schema and the account_id.

Dev.to

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.

  • API key (required): Dev.to API key from Settings, Extensions, DEV Community API Keys.
Connect Dev.to in the dashboard

Example prompts

  • Cross-post this article to Dev.to with the canonical URL set to our blog post, tagged webdev, javascript, and tutorial.
  • Turn my release notes into a Dev.to article with a clear title and publish it on Thursday morning.
  • Take this Markdown draft, use the first image as the cover, and schedule it to Dev.to for next Tuesday.

Dev.to limits

Caption or text
100,000 characters.

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 Dev.to MCP server?

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

How do I connect Dev.to?

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. Dev.to: 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.

How do I cross-post to Dev.to without hurting my SEO?

Set the canonical URL to the original article on your own site. Dev.to then tells search engines that your version is the original, so the cross-post does not compete with it.

Does a Dev.to article publish immediately or as a draft?

It publishes live at the scheduled time rather than saving as a draft, so review the preview before you confirm. Tags are capped at 4.

Keep reading

MCP

posterly MCP server

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

Scheduler

Dev.to scheduler

Schedule Dev.to from the posterly calendar and composer.

Guide

Dev.to guide

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

Pricing

posterly pricing

Compare plans, then add API and MCP at checkout.

Other platform MCP servers