◆ 24K LABS THE GOLD‑402 INDEX

07 Security 27

Scanners, auditors, verifiers, risk feeds. The coldest shelf on the site, and the one where our own standard has to be highest: a security tool that cannot be reached is worse than no security tool, because someone is relying on it.

— a terminal running a scan someone will sign their name to —

26 answered when knocked 0 answer nothing 1 no receipt on file

27 of 505 curated services sit on this shelf. 26 carry a dated knock; most recent 2026-08-28. A knock is one HTTP request that got an answer — not a delivery test. Read a stamp as reachable and speaks the protocol, never as worth the money.

Cleared Index 08-21 Trust provider and verification index with a conformant trust-evaluation endpoint: `POST /api/cleared/trust…
Coinbase Bug Bounty 08-21 Report x402 vulnerabilities for rewards up to $50,000.
CVE Database 08-21 Known vulnerabilities and patches for the x402 protocol.
CYBERA Compliance API 08-28 VASP address identification (20,468 addresses, 29 chains), risk scoring, sanctions/mixer screening.
Decision Anchor 08-21 External anchoring layer for accountability before x402 payment execution.
DopamineDesk Transaction Preflight — Checks an unsigned EVM transaction for simulation errors, gas, proxy evidence, and optional token-security…
EIP-3009 Security Analysis 08-28 Security considerations for TransferWithAuthorization.
Hermes Plant Action Safety 08-21 Deterministic pre-execution gate for agent shell, Git, SQL, infrastructure, and deployment actions, with a…
ICME Labs 08-21 Formal verification for AI agent actions.
Immunefi x402 Program 08-21 Decentralized bug bounty platform with x402 listings.
KaelAi 08-21 Wallet trust scoring API for the agentic economy.
MoltGuard 08-21 Agent trust scoring (0-100), Sybil detection with funding cluster analysis, Polymarket integrity, Ed25519 V…
Paybound 08-21 Open-source governance proxy for x402 agent payments.
Payment Verification Guide 08-21 Proper payment verification: facilitator trust models, on-chain verification fallbacks, amount and recipien…
PaySentry 08-21 Control plane for AI agent payments.
PolicyLayer 08-21 Non-custodial spending controls for AI agents.
Revettr 08-21 Counterparty risk scoring for x402 agentic commerce.
ScoutScore 08-21 Trust scoring for x402 services.
SENTINEL 08-28 AML/CFT compliance intelligence.
Sentinel/Valeo 08-21 Enterprise audit layer.
ShieldAPI 08-21 x402-native security intelligence API.
stripe-mcps 08-21 Trust verification + AML sanctions screening before Stripe/x402 payments.
TaskMarket Trust Score 08-21 Requester reputation scoring for TaskMarket (taskmarket.dev): given a requester wallet address, returns a 0…
Viridis MCP Security Preflight 08-21 Deterministic static preflight for caller-supplied MCP manifests that checks endpoint and authentication de…
x402 Checker (Nock) 08-28 Free `GET /check?url=` honesty probe of a live x402 URL plus free `GET /board` (pay-to-rank, 24h) and `GET…
x402 Manifest Check 08-21 Zero-dependency Python CLI and live x402-paid API for static manifest checks covering network, recipient, a…
x402 Trust 08-21 Autonomous trust and reliability scoring for every publicly listed x402 endpoint, derived from continuous l…