Castwyn

Help Center

Get support

A real person reads every message. Most replies go out the same business day during office hours (Mon–Fri, 8 AM–5 PM Eastern).

Email us

Write to blakesmurphy@gmail.com with “Castwyn” in the subject. (A dedicated support@castwyn.com address arrives with the castwyn.com domain.)

Include these four things

  1. Your account email — so we can look at the right workspace.
  2. The network involved — LinkedIn, Bluesky, Substack, etc.
  3. The exact error text — copy it from the red message in the app, or from the Queue’s failed post. Our errors page lists every message and its usual fix.
  4. A screenshot — of the screen where it happened, if you can.

Before you write: the 60-second checklist

  • Generation failing? Check your AI key on the AI keys page — an expired or over-limit OpenAI/Anthropic key is the #1 cause.
  • Publishing failing? Open the network’s page under Networks and reconnect — provider tokens expire.
  • Post didn’t go out at the exact minute? Scheduled posts publish on Castwyn’s daily sweep and every time anyone opens the app — open Castwyn around post time for to-the-minute publishing.

API & MCP questions

The API & MCP page inside the app has copy-paste examples for curl, n8n, Make, and Claude. Include the endpoint you called and the JSON response (never your cwn_ token) when reporting API issues.