Posterly
58 stdio tools, plus 55 HTTP MCP tools for Claude, ChatGPT, Cursor, Windsurf & more

Schedule posts from any AI assistant

Connect posterly to your favourite AI tool via MCP. Agents can plan, upload, schedule, analyze, manage webhooks, and use platform-specific composer controls from chat.

Start plan, then add APIAPI referenceView setup guide
Claude
Claude
ChatGPT
Cursor
Cursor
Any MCP Client
Any MCP Client
Posterly API Hub

Works with every MCP client

posterly's MCP server works with any app that supports the Model Context Protocol, the open standard for connecting AI assistants to external tools.

Claude Desktop

Claude Desktop

Anthropic's desktop app for Claude

ChatGPT

OpenAI's ChatGPT desktop app

Claude Code

Claude Code

Anthropic's CLI for Claude

Cursor

Cursor

AI-powered code editor

Windsurf

Windsurf

AI-powered code editor by Codeium

Cline

Cline

Autonomous coding agent for VS Code

Continue

Open-source AI code assistant

Zed

Zed

High-performance code editor

OpenAI Codex

OpenAI's coding agent CLI

What you can say to your AI

"Post this photo to my @brand Instagram tomorrow at 9am"

Schedule posts with natural language

"Show me my upcoming posts for this week"

View your content calendar

"When's the next good time to post?"

Find optimal posting slots

"List all my connected accounts"

See your linked platforms

"Upload this image and schedule it to LinkedIn"

Upload media and post in one step

"Post this caption to X and Threads"

Multi-platform publishing

"Schedule this as an Instagram Reel with @partner as collaborator"

Use platform-specific publishing settings

"Post this YouTube video as unlisted with this thumbnail"

Set native platform controls from chat

58 MCP Tools

The local stdio package includes public setup and signup handoff tools. After API access is installed, both stdio and the HTTP endpoint at /api/mcp expose the authenticated tool catalog.

Public setup and diagnostics

4 tools

Check MCP status, start paid signup, and poll progress before a Posterly API key exists.

get_mcp_statusget_agent_signup_infostart_signupget_signup_session

Identity, accounts, and connection

7 tools

Authenticate, create scoped API keys, list accounts, disconnect safely, and inspect provider connection links.

whoamicreate_api_keylist_accountsdisconnect_accountget_connect_linkcreate_connect_sessionget_connect_session

Developer clients and platform schemas

8 tools

Manage OAuth clients and discover platform-specific fields, helpers, limits, and quotas.

list_oauth_clientscreate_oauth_clientupdate_oauth_clientdelete_oauth_clientlist_platformsget_platform_schematrigger_platform_helperget_x_posting_quota

Brands and workspace context

4 tools

Resolve brands into the right social accounts and reuse saved voice guidance.

list_brandsget_brandlist_brand_accountsget_brand_profile

Posts and scheduling

11 tools

Create, batch, inspect, update, pause, repair, or delete posts using composer-grade settings.

list_postsget_postget_post_missingfind_available_slotcreate_postcreate_posts_batchupdate_postupdate_post_statusupdate_post_release_iddelete_postdelete_post_group

Authenticated support

1 tools

Ask docs-backed support questions with read-only account/post diagnostics and confirmed human handoff.

ask_support

Media and AI generation

9 tools

Upload media, create direct upload URLs, generate captions/images, and queue cost-guarded video jobs.

upload_mediaupload_media_from_urlcreate_signed_uploadgenerate_captionsgenerate_imageget_video_optionsrun_video_functiongenerate_videoget_video_job

Analytics

2 tools

Read account and post analytics with compact, table, or raw JSON presentations.

get_account_analyticsget_post_analytics

Google Business workflows

6 tools

Audit profiles, gather review links, draft replies, and manage public review responses.

list_google_business_reviewsget_google_business_review_linkaudit_google_business_profilesuggest_google_business_review_replyreply_google_business_reviewdelete_google_business_review_reply

Activity and webhooks

6 tools

Let agents monitor publishing activity and manage signed webhook subscriptions.

list_activitylist_webhookscreate_webhookupdate_webhookdelete_webhooktest_webhook

Tool schemas are published in the MCP server card and returned by tools/list.

Setup in 3 steps

Takes about 2 minutes. Use the local stdio package for desktop clients, or the HTTP endpoint for browser-based agents.

No Posterly account yet?

An AI agent can install the MCP server without an API key, call start_signup, and poll get_signup_session while you pay and set a password in the browser.

{
  "mcpServers": {
    "posterly": {
      "command": "npx",
      "args": ["-y", "posterly-mcp-server@latest"]
    }
  }
}

After Posterly shows the API key, add POSTERLY_API_KEY to unlock scheduling and social account connection tools.

1

Enable API access in posterly

Go to Dashboard → API & MCP and enable the API add-on ($3/month). Then click "Create Key" and copy your bearer key.

2

Add posterly to your AI client

Choose your client below and add the stdio config. Replace the key with yours:

Open Claude Desktop → Settings → Developer → Edit Config

claude_desktop_config.json
{
  "mcpServers": {
    "posterly": {
      "command": "npx",
      "args": ["-y", "posterly-mcp-server@latest"],
      "env": {
        "POSTERLY_API_KEY": "pst_live_your_key_here"
      }
    }
  }
}

Not sure how? Copy and paste into your AI assistant. It'll handle the rest.

3

Restart your client and start posting

Restart your AI client. You should see "posterly" in the MCP tools list. Try saying: "Run get_mcp_status, then list my posterly accounts".

HTTP

Using a browser-based agent? Skip the install.

Claude in Chrome, ChatGPT Atlas, Cursor in browser, and any other web-based MCP client can talk to posterly directly over HTTP. No local subprocess needed; it is the same key, same paywall, and same 55 HTTP MCP tools.

POST https://www.poster.ly/api/mcp Authorization: Bearer pst_live_your_key_here Content-Type: application/json { "jsonrpc": "2.0", "id": 1, "method": "tools/list" }

Auto-discovery: hit /.well-known/mcp/server-card.json for the full server card, or /.well-known/oauth-protected-resource for auth metadata.

Pricing

API access is an add-on to any posterly plan.

API & MCP Access

$3/month

Add-on to any posterly plan (from $7/mo)

  • HTTP + stdio MCP for Claude, ChatGPT, Cursor & more
  • 55 HTTP MCP tools + full REST API
  • 100 create-post requests/hour plus separate media/read limits
  • Tier-based API keys: Starter 1, Pro 2, Power User 3, Agency 4
  • All 11 supported social platforms
Start plan, then add API

FAQ

Ready to schedule posts from your AI?

Start with posterly at $7/mo, add API access for $3/mo.

Start plan, then add API