Assay — A2A & MCP Provider Assurance Observatory
Live Observatory: https://assay-207908449630.us-central1.run.app
Assay continuously probes remote MCP, A2A, and x402 endpoints to verify liveness, pin canonical SHA-256 tools/list schema hashes (detecting silent MCP Rug Pulls), and scan for prompt-injection tool poisoning before your agent pays or executes a tool.
MCP Endpoint
- Streamable HTTP MCP:
https://assay-207908449630.us-central1.run.app/mcp - Pre-Flight REST API:
POST https://assay-207908449630.us-central1.run.app/v1/preflight - Live Leaderboard:
GET https://assay-207908449630.us-central1.run.app/v1/leaderboard