Toolbox for ChatGPT

com.allthepossibles/toolbox

Small tools for agent builders: AI-writing tells, tools/list token cost, CLAUDE.md lint, and more.

client:ChatGPT transport:streamable-http tools:5

Install Toolbox in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://toolbox.allthepossibles.com/mcp

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