PayperAnswer for ChatGPT

app.payperwork/ai

Pay-per-call chat on GPT-6.1, Claude, Gemini and Grok over x402. No API key; a failed call is free.

client:ChatGPT transport:streamable-http tools:2

Install PayperAnswer in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://payperwork.app/ai/mcp

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