TikTok MCP server: let Claude or any agent post your videos to TikTok

Set it up and post, step by step

1. Add PostWire's MCP server to your agent

   In Claude, open PostWire in the connector directory and press Connect. Anywhere else, add the remote server https://postwire.io/api/mcp (Streamable HTTP; OAuth sign-in or an API key) — in Claude Code: claude mcp add --transport http postwire https://postwire.io/api/mcp. Cursor, VS Code, Windsurf, Codex and Gemini CLI configs: MCP client configs.

2. Sign in with your email

   The first time the agent uses a PostWire tool, a sign-in window asks for your email and a 6-digit code; that also creates a free PostWire account if you have none. No password and no card. Agents that cannot do OAuth send an API key instead (dashboard → API & MCP → Copy key).

3. Connect your TikTok account

   Ask "connect my TikTok". create_connect_link gives you a one-hour link; you sign in on TikTok's own page and allow PostWire to post for you. PostWire never sees your TikTok password.

4. Get the video or the photos to PostWire

   Pass a public https link as video_url, or photos in media. For a file on your phone or laptop, ask for an upload link: create_upload_link opens a 24-hour page where you pick the file (MP4, MOV or WebM; up to 250 MB on the free plan and 1 GB on paid plans), and get_uploaded_file returns the media_url to post. Chat attachments never reach an MCP server, so this is how your own clip gets there.

5. Let PostWire write the caption

   "Write a TikTok caption for this clip, and the YouTube Shorts title." generate_posts returns one draft per network and publishes nothing. TikTok's draft is hook-first: 150–300 characters with the hook at the start, at most 5 hashtags inside the caption, and the keywords the video does not say out loud.

6. Post it, and say who can see it

   After you approve, the agent calls post_to_social (or schedule_post with run_at). TikTok asks that the account owner choose the audience of each post, so say it: privacy is "public", "friends" or "private". Without it PostWire posts the video as private (only you) and the result says so.

   {
     "name": "post_to_social",
     "arguments": {
       "platforms": ["tiktok"],
       "per_platform": { "tiktok": { "text": "We cut onboarding from 9 steps to 3 👀 here is what went #saas #onboarding" } },
       "video_url": "https://postwire.io/m/…/demo.mp4",
       "privacy": "public"
     }
   }

7. Check that it is live

   TikTok processes the video after it receives it, so the first answer says processing. get_post_status returns TikTok's status and, once it is public, the post's id. A big file that does not finish inside one request carries on from the last 32 MB piece TikTok confirmed, a few minutes later — never from zero.

Comments, duet and stitch switches, TikTok's AI-generated label and the commercial-content disclosures are set through the REST API: POST /api/post with "options": {"tiktok": {"disable_duet": true, "ai_generated": true}}. Photo posts also take photo_cover_index and auto_add_music. Full list: network options.