developer tools for ChatGPT

net.programmes/developer-tools

65+ free in-browser developer tools (JSON, Base64, JWT, hash, regex…) callable over MCP.

client:ChatGPT transport:streamable-http tools:59

Install developer tools in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://programmes.net/mcp

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