OG Stamp for ChatGPT

com.ogstamp/og

Pay-as-you-go Open Graph image API. Renders 1200x630 PNGs for agents. Credits never expire.

client:ChatGPT transport:streamable-http tools:3

Install OG Stamp in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://ogstamp.com/mcp

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