ChatGPT

SpendPreflight for ChatGPT

io.github.spendpreflight/spendpreflight

Preflight x402 payments. Base ERC-8004 agent #1151628; wallet binding verified Nov 3, 2026.

client:ChatGPT transport:streamable-http tools:17

Install SpendPreflight in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.spendpreflight.com/mcp

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

What ChatGPT can do once it is connected

SpendPreflight in other clients

SpendPreflight MCP server