SmartRetry Payment Tools for ChatGPT

com.smartretry/payment-tools

Free BIN, issuer, MCC and decline code lookups for card payments (Visa, Mastercard, Stripe, Adyen).

client:ChatGPT transport:streamable-http tools:4

Install SmartRetry Payment Tools in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://tools.mcp.smartretry.com/mcp

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