{"slug":"ai-agent-action-preflight-f7b5419d","name":"AI agent action preflight","summary":"Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, URL/hostname validation, a bounded JSON-schema check on a payload, and a spend proposal against a spend mandate) and returns ALLOW, REVIEW, or BLOCK with stable reason codes plus a SHA-256 request/receipt hash pair.","status":"live","indexable":true,"listed_since":"2026-10-25T17:51:11.150885Z","sources":[{"source":"x402_bazaar","external_id":"https://agent402.tools/api/action-gate","owner_address":"0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0","seen_at":"2026-10-26T05:59:34.110688Z","removed_at":null}],"endpoints":[{"url":"https://agent402.tools/api/action-gate","host":"agent402.tools","protocol":"x402","state":"live","last_probe_at":"2026-10-25T21:45:34.823752Z","last_ok_at":"2026-10-25T21:45:34.823752Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"agent402-tools-4df46169","name":"agent402.tools"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":4,"paid_calls_30d":9,"last_paid_at":"2026-10-20T01:49:53.669Z","reported_at":"2026-10-26T05:59:34.110688Z"},"notice":"Not affiliated with addrbook — claim or request removal."}