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Integration

Billsby

Subscription billing: customers, subscriptions, plans and invoices. Your client pastes their Billsby key once, and your agent or your code works with their access.

Payments

About Billsby

Through Operate As, your agent, n8n workflow or code works in Billsby with your client's own access. Your client pastes their API key from Billsby once. We store it encrypted, so it never sits in an email or a shared doc. Your agent reaches any endpoint of Billsby's API through the request tool, with the client's access attached.

Common uses in Payments

  • Look up customers, payments and refunds
  • Send invoices and payment links
  • Report on revenue and failed payments

Billsby

Billsby · Payments

API key

Subscription billing: customers, subscriptions, plans and invoices

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

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

Open the Billsby docs

Tools

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

Base URL for request

https://public.billsby.com/api/v1/rest/core/{company_domain}

  • request

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

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

    servicestringrequired
    This service: billsby
    methodstringrequired
    GET, POST, PUT, PATCH or DELETE
    pathstringrequired
    The path under https://public.billsby.com/api/v1/rest/core/{company_domain}
    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 Billsby key you paste, with only the access you gave that key

Get started

Send your next client one link

Add a client, select the services, copy the link. You'll get an email the moment their access is ready. Start free, no card required. Paid plans are one flat monthly price, and a busy month never takes your agents offline.