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Integration

Handwrytten

Send handwritten notes and cards written by robots. Your client pastes their Handwrytten key once, and your agent or your code works with their access.

Marketing

About Handwrytten

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

Common uses in Marketing

  • Add subscribers and keep lists in sync
  • Build and schedule campaigns
  • Pull results into a client report

Handwrytten

Handwrytten · Marketing

API key

Send handwritten notes and cards written by robots

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

Tested against Handwrytten's live API.

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

Open the Handwrytten docs

Tools

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

Base URL for request

https://api.handwrytten.com/v2

  • request

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

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

    servicestringrequired
    This service: handwrytten
    methodstringrequired
    GET, POST, PUT, PATCH or DELETE
    pathstringrequired
    The path under https://api.handwrytten.com/v2
    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 Handwrytten 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.