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U301 MCP server

14 operations0 webhooks

Create and manage branded short links, configure custom domains and their redirects, and read click analytics with U301.

Use U301 in Claude, ChatGPT, Cursor or another MCP client

Connect U301 once in Corsair, then add one MCP address to your agent.

Connect U301
Setup steps for Claude, ChatGPT, Cursor and Claude Code

Building your own app on the Corsair SDK? Get API keys

Try U301 with your agent

Connect U301, then paste this into Claude, ChatGPT or Cursor. For ideas from other apps, see the use cases.

Using Corsair, show me what you can do in U301 on my account, then run one read-only example and show me the result.

Runs once, when you ask

U301 tools and triggers

Tools are what your agent can do in U301 through Corsair's MCP server. Triggers are the U301 events a routine can start from.

Domains

  • ActiveRead-only

    Check whether a domain's DNS verification has completed, which is the step to poll after adding the CNAME

    domains.active

  • CreateWrite

    Add a custom domain; the DNS CNAME still has to be created and verified before it serves links

    domains.create

  • DeleteDestructive

    Remove a custom domain from the workspace

    domains.delete

  • GetRead-only

    Read one domain's validity, archive state, slug length and redirect settings

    domains.get

  • Home RedirectWrite

    Set where a domain's root redirects to; U301 allows it on the Pro plan only and answers 403 on the free plan

    domains.homeRedirect

  • ListRead-only

    List the workspace's domains, including the shared u301.co and any of your own

    domains.list

  • Not Found RedirectWrite

    Set where an unknown slug on a domain redirects to; U301 allows it on the Pro plan only and answers 403 on the free plan

    domains.notFoundRedirect

  • Path LengthWrite

    Set the random slug length a domain uses, 3 to 10

    domains.pathLength

Links

  • CreateWrite

    Shorten a URL on u301.co or one of your domains, with an optional custom slug, password and comment; a new link spends one monthly allowance slot

    links.create

  • DeleteDestructive

    Delete a short link; the destination is no longer reachable through it

    links.delete

  • GetRead-only

    Read one short link by its short form, such as u301.co/abc123

    links.get

  • ListRead-only

    List the workspace's short links with their click counts, archive and suspend state

    links.list

Connect U301 to Claude, ChatGPT or Cursor

  1. 1

    Connect U301 in Corsair

    Add your U301 API key once in Corsair. Corsair stores the credential encrypted and makes the U301 API calls for your agent, so it never goes into a prompt or a config file. Connect U301

    If your link lets the agent add apps, you can skip this: it gives you a sign-in link the first time it needs U301. On a ChatGPT personal plan, connect U301 here first.

  2. 2

    Add Corsair's MCP server to your agent

    Every client uses the same address:

    https://mcp.corsair.dev/mcp
    Open Customize → Connectors → Add custom connector, paste the address, then select Connect.

    Codex, Gemini CLI, VS Code, Zed and other clients with OAuth sign-in work the same way. Clients without it, such as GitHub Copilot's coding agent, use a link's own address and an API key. Setup for every client

  3. 3

    Sign in and choose what needs your approval

    Your client opens Corsair to sign in. Pick a link: the apps your agent can use and a mode that decides what it may do without asking. In the default Cautious mode, U301's read and write operations run right away and its 2 destructive operations wait for your approval. Strict mode asks before every write and refuses destructive operations, and Read mode allows reads only.

FAQ

Install corsair and @corsair-dev/u301, add the U301 plugin, and connect with an API key. Then call methods like corsair.u301.api.analytics.audience() from your app. Corsair keeps each tenant isolated.

Yes. U301 requires an API key from your U301 account or developer dashboard. Create credentials with access that matches what you automate, then paste them into Corsair or connect through managed auth in Hub.

Yes. One Corsair client can hit U301, GitHub, Notion, Stripe, and the rest. Trigger U301 from a webhook, push updates to Slack, or chain actions across plugins. Same tenant context across integrations, plain TypeScript.

Teams use Corsair for create and manage branded short links, configure custom domains and their redirects, and read click analytics with U301. Common builds include sync jobs, admin tooling, and agents that call U301 APIs from your backend.

The SDK is open source. Self-host and you pay Corsair nothing for the integration layer. Hub bills for hosted auth and execution, not per U301 API call. Hub has a generous free tier. For hobby projects you can probably run the whole thing on free. Paid plans start to matter with more tenants or heavier traffic.

We maintain @corsair-dev/u301 in the open repo. When U301 ships API changes, upgrade the package. Your call sites stay typed. You should not need to rewrite the integration layer each time.

No. Corsair does not read your U301 data or hold individual access credentials. Credentials stay in your database. API calls run on your instance. We do not store U301 data on your behalf.

Yes. Add https://mcp.corsair.dev/mcp as a custom connector or MCP server in Claude, ChatGPT, Cursor, VS Code, Claude Code, Codex or any client that supports remote MCP servers with OAuth sign-in, then sign in to Corsair. On ChatGPT personal plans, custom servers currently get read tools only.

Yes. Put U301 on a link in Strict mode and every write waits for your approval, while destructive actions are refused. The default Cautious mode asks only before the 2 destructive U301 operations. You can change a link's mode at hub.corsair.dev/me.