PostZen

AIエージェントまたは1つのAPIから、10のソーシャルネットワークへの投稿、予約投稿、分析、返信ができます。

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ホスト型 MCP サーバー

npx add-mcp 'https://mcp.postzen.dev/mcp'

Claude Code、Codex、Cursor などにインストールできます

ドキュメント

PostZen — The Social Media API for Developers and AI Agents

Add social features to your apps and AI agents in minutes. PostZen is a unified social media API to publish, schedule, and analyze posts across 10 channels: Instagram, X (Twitter), LinkedIn, Facebook, Threads, YouTube, TikTok, Pinterest, Bluesky, and Telegram.

Skip the integration nightmare

Every social platform has its own developer app, review process, token lifecycle, and media rules. PostZen replaces all of it with one integration.

Building it yourself

  • 10 developer apps, 10 OAuth flows, 10 app reviews
  • Token refresh, rate limits, and retry logic per platform
  • Media specs and API rules that change without warning
  • Months of integration work before your first post
  • App review rejections and delays that block your launch
  • Quota restrictions that limit your users and frustrate your team

With PostZen

  • One API key and one OAuth flow for every platform
  • Tokens, rate limits, and retries handled for you
  • Media validated and transformed per platform automatically
  • First post in production in under an hour

Post everywhere in 3 steps

  1. Get your API key. Sign up and grab your key in seconds. No sales call, no demo gate.
  2. Connect channels. Link social accounts through one OAuth flow. No developer app reviews needed.
  3. Launch. Send one API request and you just added social media to your stack.
curl -X POST https://api.postzen.dev/v1/posts \
  -H "Authorization: Bearer $POSTZEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"content": "Hello from PostZen", "platforms": [{"platform": "x", "accountId": "<accountId>"}], "publishNow": true}'

Everything you need to ship social features

One unified social API for planning, publishing, media management, conversations, and performance tracking.

Scheduling and queues

Plan and queue content across all connected channels in one place. Keep your publishing consistent with less manual posting. See https://www.postzen.dev/social-media-scheduler and https://www.postzen.dev/queue-posts.

Inbox

Read and reply to comments on Instagram, Facebook, and Threads, and answer Instagram DMs, from the dashboard or the API. See https://www.postzen.dev/social-media-inbox and https://www.postzen.dev/comment-to-dm.

Analytics

Get rich analytics on post performance and audience behavior, including age ranges, demographic splits, and engagement trends. See https://www.postzen.dev/social-media-analytics.

Post history

Import past posts into one unified timeline to review what performed best, compare results over time, and reuse winning content ideas.

All features: https://www.postzen.dev/features

Publish across 10 social networks with one API

Post to Facebook, X, Bluesky, Instagram, LinkedIn, Telegram, TikTok, Threads, Pinterest, and YouTube through a single API. New platforms are added without changing your integration.

Built for AI agents

PostZen exposes every API operation as a tool on a hosted MCP server (Streamable HTTP at https://mcp.postzen.dev/mcp) with OAuth 2.1 or API-key authentication, plus Node and Python SDKs and a CLI. Agents can create posts, schedule them into queues, read comments and DMs, and pull analytics through natural language. Setup guides per client: https://www.postzen.dev/agents

Frequently asked questions

How fast can I integrate PostZen compared to building custom integrations?

Custom integrations take months. PostZen social media API takes under an hour.

Do I need to create developer apps for each platform?

No. We handle developer apps, approvals, and platform-specific limits for you.

How reliable is the scheduling?

We transform content for each platform's requirements. Posts go out on time without custom retry logic.

Is PostZen white-label friendly?

Yes. Your users never need to see PostZen branding.

Will posting through PostZen get my accounts banned or reduce reach?

No. We use official platform APIs, so posts are treated like native posts.

Can AI agents use PostZen to post on social media?

Yes. PostZen uses a documented API and a hosted MCP server so agents can post, schedule, and manage social accounts through natural language.

Which social media platforms does PostZen support?

Instagram, TikTok, X, LinkedIn, Facebook, Threads, YouTube, Pinterest, Bluesky, and Telegram.

Pricing

  • Free: $0 per month, 2 connected accounts, 20 posts per month
  • Starter: $29 per month, 5 accounts, unlimited posts
  • Pro: $49 per month, 20 accounts, unlimited posts
  • Scale: $149 per month, 100 accounts, unlimited posts
  • Extra accounts on any paid plan: $3 per account per month

Full details: https://www.postzen.dev/pricing

Start building in minutes

Grab your API keys, make your first request, and start posting in minutes. Start for free at https://app.postzen.dev/

PostZen · https://www.postzen.dev · Docs: https://docs.postzen.dev · API: https://api.postzen.dev · Status: https://status.postzen.dev · Support: hello.postzen@gmail.com · Terms: https://www.postzen.dev/terms · Privacy: https://www.postzen.dev/privacy