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.
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
Anthropic's desktop app for Claude
ChatGPT
OpenAI's ChatGPT desktop app
Claude Code
Anthropic's CLI for Claude
Cursor
AI-powered code editor
Windsurf
AI-powered code editor by Codeium
Cline
Autonomous coding agent for VS Code
Continue
Open-source AI code assistant
Zed
High-performance code editor
OpenAI Codex
OpenAI's coding agent CLI
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
78 MCP Tools
The local stdio package exposes 78 tools, including public setup and signup handoff tools. The hosted HTTP endpoint at /api/mcp exposes the same authenticated catalog with 75 tools. Hosted HTTP tool calls are JSON-only, so direct media uploads are limited to small base64 files.
Public setup and diagnostics
4 toolsCheck MCP status, start paid signup, and poll progress before a posterly API key exists.
get_mcp_statusget_agent_signup_infostart_signupget_signup_sessionIdentity, accounts, and connection
9 toolsAuthenticate, 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_sessionSubscription management
6 toolsRead 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_subscriptionDeveloper clients and platform schemas
8 toolsManage 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_quotaBrands and workspace context
5 toolsResolve brands into the right social accounts and reuse saved or learned voice guidance.
list_brandsget_brandlist_brand_accountsget_brand_profileget_learned_voicePosts and scheduling
14 toolsCreate, 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_groupAuthenticated support
1 toolsAsk docs-backed support questions with read-only account/post diagnostics and confirmed human handoff.
ask_supportMedia and AI generation
9 toolsUpload small base64 media over hosted HTTP, use public URLs or signed upload for larger files, generate captions/images, and queue cost-guarded video jobs.
upload_mediaupload_media_from_urlcreate_signed_uploadgenerate_captionsgenerate_imageget_video_optionsrun_video_functiongenerate_videoget_video_jobAnalytics
6 toolsRead account and post analytics, the performance feedback loop, and evidence-based post suggestions.
get_account_analyticsget_post_analyticsget_performance_profileget_post_insightslist_post_suggestionsdismiss_suggestionGoogle Business workflows
9 toolsAudit 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_mediaActivity, updates, and webhooks
7 toolsLet agents monitor publishing activity, read the posterly updates feed, and manage signed webhook subscriptions.
list_activityget_updateslist_webhookscreate_webhookupdate_webhookdelete_webhooktest_webhookTool 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.
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.
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.
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".
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 75 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.
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
Starter $7 + API $3, charged now. No free trial on this path.
- HTTP + stdio MCP for Claude, ChatGPT, Cursor & more
- 75 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
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