jsoncanvas for ChatGPT

io.mcpcentral/jsoncanvas

Create, validate, edit, export (markdown/svg/png/mermaid), and search JSON Canvas files.

client:ChatGPT transport:streamable-http

Install jsoncanvas in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://jsoncanvas.mcpcentral.io/mcp

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