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Use Casii MCP in Doubao

Create a custom connector in the plugin manager of Doubao desktop (Doubao Work), enter the Casii MCP URL and approve in your browser — no API key needed.

Prerequisites

  1. Doubao installed and signed in.
  2. A Casii account. On the first connection a Casii authorization page opens in your browser — sign in and approve; no API key to create or copy. You can disconnect anytime under Connected apps in the dashboard.

Manage connected apps

Setup steps

  1. Open the Doubao desktop app and, in Doubao Work, click "Plugins · Skills · Partners" in the left sidebar.

    Open the Doubao desktop app and, in Doubao Work, click "Plugins · Skills · Partners" in the left sidebar.

  2. On the Plugins page, click "Manage" in the top-right.

    On the Plugins page, click "Manage" in the top-right.

  3. On the Manage page, click "+ Add" in the top-right and choose "New custom connector".

    On the Manage page, click "+ Add" in the top-right and choose "New custom connector".

  4. In the "Connector needs authorization" window that appears, click "Authorize".

    In the "Connector needs authorization" window that appears, click "Authorize".

  5. In the "New custom connector" dialog, set Server name to Casii, Transport type to "HTTP" and Server URL to the MCP URL below. No custom headers are needed — click "Save". A Casii authorization page opens in your browser; sign in to Casii and approve.

    In the "New custom connector" dialog, set Server name to Casii, Transport type to "HTTP" and Server URL to the MCP URL below. No custom headers are needed — click "Save". A Casii authorization page opens in your browser; sign in to Casii and approve. 
    Name: Casii
Transport: HTTP
URL: https://api.casii.io/mcp/

  6. Once authorized, click "New work task" and ask for what you need in plain language (you can copy the example below). The AI calls Casii and returns the result.

    Once authorized, click "New work task" and ask for what you need in plain language (you can copy the example below). The AI calls Casii and returns the result.

Custom connectors only run on your local computer: keep the run location under the input box set to "Local computer" when you send a task.

Verify it works

Ask directly in Doubao, e.g.:

Use casii MCP’s detect_export_target to check how many followers the nasa account has on Instagram

The first call asks for tool permission; after that the AI handles detection, quoting and creation automatically. Creating and resuming must carry a stable idempotency key (idempotency_key, UUID format) generated once: retrying with the same key and the same parameters returns the original tasks and never charges twice; only changed parameters make it a new operation with a new key.