Assay A2A, MCP & x402 Pre-Flight Verifier & Observatory for ChatGPT

dev.agentdiet/assay

Live behavioral security verifier, schema auditor, and trust oracle for A2A, MCP & x402 agents.

client:ChatGPT transport:streamable-http tools:4

Install Assay A2A, MCP & x402 Pre-Flight Verifier & Observatory in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://assay.agentdiet.dev/mcp

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