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Integration

Substack

Newsletters and subscriptions. Your client pastes their Substack key once, and your agent or your code works with their access.

Social and video

About Substack

Substack is a platform for newsletters and paid subscriptions.

With your client's Substack connected, your agent can work with their newsletter.

Substack

Substack · Social and video

API key

Newsletters and subscriptions

The client pastes their API key from Substack's settings. We store it encrypted.

Tested against Substack's live API.

Building with Substack? The docs have setup steps and code for every tool.

Open the Substack docs

Tools

Your agent calls any endpoint of Substack's API with the request tool, with the client's access attached.

Base URL for request

https://substack.com/api/v1

  • request

    HTTPS ANY /v1/clients/{clientId}/substack/{path}

    Any endpoint of Substack's own API, with the client's access attached.

    servicestringrequired
    This service: substack
    methodstringrequired
    GET, POST, PUT, PATCH or DELETE
    pathstringrequired
    The path under https://substack.com/api/v1
    queryobjectoptional
    Query parameters
    bodyobjectoptional
    A JSON body

Over MCP every tool also takes client_id, from list_clients. Over HTTPS send it as clientId to https://api.operate.as/v1.

What the client approves

  • Use the Substack key you paste, with only the access you gave that key

Related

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