Product & Business · Pro

Product Engineering Pro

Review product discovery, requirements, feature breakdown and release readiness against a structured checklist, with a repeatable risk score.

Works withClaude (all plans)ChatGPT Pro, Business, Enterprise

Version 1.0.0

Use it for

Turn discovery evidence into bounded product scope.
Assess a PRD before development or release.

What you get

Discovery and PRD control assessment.
Feature decomposition and acceptance-criteria review.
Technical/release readiness findings and product risk score.

A place to start

Example requests

Review this PRD for measurable outcomes, missing decisions and technical readiness.

Assess release readiness from this supplied evidence.

Connect and use

Get access: subscribe or redeem a code in My account.
Add Connector Factory to Claude or ChatGPT once, using the steps below. It covers every Pro tool.
Sign in with the same platform account and sign-in method you use on this website. Your ChatGPT or Claude email does not have to match.

One address for every Pro tool

Add this once to Claude or ChatGPT and every Pro tool you have access to is ready, including new ones as they launch. Name it Connector Factory.

https://plugins.acairnsapps.org/mcp

Claude

Which Claude plans? Every plan, including Free. Claude Free allows one custom connector, and that's all you need: Connector Factory covers every Pro tool. On Team or Enterprise, an Owner adds the connector first and you then connect to it.

Open Claude → Customize → Connectors and choose Add custom connector.
Name it Connector Factory and paste this address as the server URL: https://plugins.acairnsapps.org/mcp .
For authentication choose Sign in now, even if Claude says No sign-in. If your dialog shows everything on one screen, open Advanced settings for the next step.
Choose Use your own OAuth client and copy this client ID: pqrMGDVmhiybU8hVxE5hWAJVVKLWn6iw It is a public identifier, not a password. Leave the optional client secret blank. Do not add request headers or paste tokens/API keys.
Choose Add, then Connect, and sign in with the same platform account and sign-in method you use on this website.
In a new chat, choose + → Connectors, turn Connector Factory on and paste an example request. Allow its read-only calls when Claude asks.

One connector covers every Pro tool you have access to. If Claude offers an old or test account at sign-in, decline it and use My account → Use a different account here first. Never create a second paid subscription to fix a sign-in mismatch.

ChatGPT

Which ChatGPT plans? OpenAI lets you add custom tools on ChatGPT Pro, Business, Enterprise and Edu, using ChatGPT on the web. ChatGPT Plus and Free cannot add them yet, and the mobile apps cannot set them up. On Business, Enterprise or Edu, a workspace admin may need to add the tool for you. If your plan can't, use Claude instead: it works on every plan.

Open ChatGPT on the web and go to Plugins.
Choose +, then Add custom MCP server. On older layouts this is Settings → Apps → Create.
Name it Connector Factory and paste this address as the server URL: https://plugins.acairnsapps.org/mcp
Choose OAuth sign-in, tick the risk acknowledgement and create it.
When asked, sign in with the same platform account and sign-in method you use on this website.
Start a new chat, type @, pick Connector Factory and paste an example request.

One connector covers every Pro tool you have access to. If it stops working after a while, reconnect it rather than adding a second copy.

Technical details

Address for every Pro tool: https://plugins.acairnsapps.org/mcp
This tool only (optional): https://plugins.acairnsapps.org/mcp/product
Permission requested: product:read (read-only)

These tools are not listed in the ChatGPT or Claude app directories yet, so you add them yourself with the steps above.

Setup help and troubleshooting →