All connectors
Handwrytten
Send real handwritten cards by mail: pick a card and handwriting style, manage your address book, design custom cards and QR codes, and track orders. Needs a Handwrytten account; each card sent is charged to it.
Build prompt
Build the connector at https://tendle.ai/connectors/handwrytten.Build a connector from https://tendle.ai/connectors/handwrytten/mcp. Use only this address for every call; don't look Handwrytten up anywhere else. It signs in with OAuth, not an API key: authorize URL https://mcp.handwrytten.com/authorize, token URL https://mcp.handwrytten.com/token, dynamic client registration at https://mcp.handwrytten.com/register, scopes `read:profile send:cards read:orders read:contacts write:contacts read:balance`, PKCE with S256.If your agent says it couldn’t connect, try again. Sign-in sometimes takes a second try.
- 01Open your agent and start a new chat.
- 02Paste the prompt and send it. Your agent builds the connector.
- 03Sign in to Handwrytten when your agent asks.