posterly
89 stdio tools, plus 86 hosted 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, manage subscriptions, and use platform-specific composer controls from chat.

Get Starter + API · $10/moAPI referenceCLIView setup guide
Claude
Claude
ChatGPT
Cursor
Cursor
Any MCP Client
Any MCP Client
posterly API Hub

What it looks like in chat

Draft, validate, then approve. Your AI never publishes until you say so.

your AI · connected to posterly MCP

Draft 3 LinkedIn posts for next week about our new MCP signup flow. Don't schedule until I approve.

Assistant

Three short captions in your brand voice, via generate_captions. Next I will call validate_post, then wait.

  1. 1 · Tue 9:00

    Your AI can now schedule social posts. You still approve every one.

  2. 2 · Wed 9:00

    MCP signup is live. Connect Claude, ChatGPT, or Grok Bot in a few minutes.

  3. 3 · Thu 9:00

    Validate first, then publish. That is the whole workflow.

whoamivalidate_postcreate_post
Approval requiredschedule · gated

Schedule 3 posts · Tue to Thu 9:00 Asia/Dubai

LinkedIn @Acme

Waiting for approval. Nothing will be scheduled until you approve.

Never posts without approval · validate_post before create_post

View in posterly

Works with Claude, Cursor, ChatGPT, OpenClaw, Hermes, Grok Bot, Poke, and any MCP client.

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

ChatGPT custom MCP on the web

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

Grok Bot

Grok Bot

xAI's cloud AI teammate (hosted HTTP MCP)

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

89 MCP Tools

The local stdio package exposes 89 tools, including public setup and signup handoff tools. The hosted HTTP endpoint at /api/mcp exposes the same authenticated catalog with 86 tools. Hosted HTTP tool calls are JSON-only, so direct media uploads are limited to small base64 files.

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

9 tools

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

whoamicreate_api_keydelete_api_keylist_accountsdisconnect_accountget_connect_linkconnect_accountcreate_connect_sessionget_connect_session

Subscription management

6 tools

Read the AI credit balance, and read and self-manage the posterly subscription; destructive actions require explicit confirmation and cancel needs a reason.

get_creditsget_subscriptioncancel_subscriptionpause_subscriptionresume_subscriptiondowngrade_subscription

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

5 tools

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

list_brandsget_brandlist_brand_accountsget_brand_profileget_learned_voice

Posts and scheduling

14 tools

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

list_postsget_postget_post_missingfind_available_slotcreate_postvalidate_postsubmit_agent_feedbacksubmit_product_feedbackcreate_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

11 tools

Upload small base64 media over hosted HTTP, use public URLs, signed upload, or a human /drop page for laptop files, generate captions/images, and queue cost-guarded video jobs.

upload_mediaupload_media_from_urlcreate_signed_uploadcreate_media_droplist_mediagenerate_captionsgenerate_imageget_video_optionsrun_video_functiongenerate_videoget_video_job

Analytics

6 tools

Read account and post analytics, the performance feedback loop, and evidence-based post suggestions.

get_account_analyticsget_post_analyticsget_performance_profileget_post_insightslist_post_suggestionsdismiss_suggestion

Social inbox

9 tools

Read and reply to Instagram DMs and comments, Facebook Page DMs and comments, and Threads replies. Hide is reversible. Delete is irreversible and Instagram/Facebook only; Threads replies cannot be deleted. Requires a Pro plan or higher.

list_conversationsget_conversationsend_messagelist_commentsget_commentreply_to_commentupdate_commentdelete_commentsync_inbox

Google Business workflows

9 tools

Audit profiles, gather review links, manage public review responses, and update profile media.

list_google_business_reviewsget_google_business_review_linkaudit_google_business_profilesuggest_google_business_review_replyreply_google_business_reviewdelete_google_business_review_replylist_google_business_mediaadd_google_business_mediadelete_google_business_media

Activity, updates, and webhooks

7 tools

Let agents monitor publishing activity, read the posterly updates feed, and manage signed webhook subscriptions.

list_activityget_updateslist_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

Buy plan + API in one checkout from this page (or go to Dashboard → API & MCP if you already paid). 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 (developer mode apps), Cursor in browser, Grok Bot (xAI's cloud agent), and any other remote MCP client can talk to posterly directly over HTTP. No local subprocess needed; it is the same key, same paywall, and same 86 hosted HTTP MCP tools. Because this transport is JSON-only, use local stdio MCP, public media URLs, or signed-upload capable clients for larger file uploads. Dedicated connect pages: Claude, ChatGPT, Cursor, Grok Bot, Poke, Hermes, and OpenClaw. First-schedule walkthroughs: ChatGPT, Claude, Cursor, Grok Bot, Poke, Hermes, OpenClaw. Media bodies: Solving the 4MB MCP limit.

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.

Prefer a managed MCP connection? Connect to posterly on Smithery.

Pricing

One Stripe subscription: your plan plus API & MCP. Charged now, no free trial.

Plan + API & MCP

$10/month

Starter $7 + API $3, charged now. No free trial on this path.

  • HTTP + stdio MCP for Claude, ChatGPT, Cursor & more
  • 86 hosted 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 3, Agency 4
  • All 18 supported social platforms
Get Starter + API · $10/mo
Get Pro + API · $18/moGet Power + API · $28/moGet Agency + API · $78/mo — Agency API is $29

FAQ

Ready to schedule posts from your AI?

Starter + API is $10/mo in one payment. Upgrade later to Pro, Power, or Agency.

Get Starter + API · $10/mo