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Turn a reference clipinto blocking you can direct.

Secret Sky Previs reads a reference video and returns a depth greybox plus a character pose skeleton, so the blocking, camera logic, and rhythm inside a shot become something you can work with directly.

It runs as a remote MCP server. There is no npm package and no local service — every client connects to the same address.

Server address

https://www.secretsky.co/api/mcp

First run

  1. Add Secret Sky in your client.
  2. Sign in with Google or an email link — an account is created automatically if you do not have one.
  3. Enter a one-time invite code to activate generation.
  4. Confirm the authorization and return to your agent.

Signing up is open to everyone. The invite code only gates generation, not registration.

By client

ChatGPT

  • Search for Secret Sky Previs under Work → Plugins and install it.
  • During the beta, add the server address above through Developer mode.
  • You can hand a video attachment straight to create_previs.

Claude

  • Once it is listed in the Directory, search for it and press Connect.
  • During the beta, go to Settings → Connectors → Add custom connector and paste the server address.
  • On Team and Enterprise plans an Owner adds the organization connector first.

Claude Code

  • Run the command below, then type /mcp and authenticate in the browser.
claude mcp add --transport http --scope user \
  secret-sky https://www.secretsky.co/api/mcp

Codex

  • Run the commands below, or add the Streamable HTTP URL under MCP servers in the Desktop or IDE app and authenticate there.
codex mcp add secret-sky --url https://www.secretsky.co/api/mcp
codex mcp login secret-sky

Large or local files

If a host will not hand a local file to a remote MCP server, the agent calls prepare_previs_upload, uploads through the signed TUS contract it returns, and passes the resulting upload_id to create_previs.

Limits

The free plan allows 5 jobs per calendar day (Asia/Shanghai), one at a time, with clips up to 10 seconds. Actual values follow the plan limits on the server.