Tick Mark Books for ChatGPT

com.tickmarkbooks/mcp

Look up what bookkeeping software costs a small business a month, ledger included.

client:ChatGPT transport:streamable-http tools:8

Install Tick Mark Books in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://tickmarkbooks.com/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs