◆ 24K LABS
THE GOLD‑402 INDEX
04 Security 52
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 —
52 answered when knocked 1 answer nothing 0 no receipt on file
52 of 736 curated services sit on this shelf. 53 carry a dated knock; most recent . 1 currently answer nothing. 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.
- agent-exec Address, URL and x402-counterparty risk checks from public risk feeds: verdict, score and reasons, $0.02 US…
- agent.pw Self-hostable MIT credential vault for agent API keys and OAuth tokens.
- AskZephy Solana Audit Static PATTERN scan of a Solana/Anchor Rust repository: flags risky code shapes (missing signer/owner check…
- Automaton-Sovereign Pre-flight safety checks for Base before an agent signs: EVM bytecode analysis with honeypot and mint-backd…
- Burnbound Buyer-side spending controls for x402: per-agent daily caps, per-payment limits, allowed hosts and human ap…
- ChainWard Evidence-linked on-chain risk report for a Base or BNB Chain address before an agent pays it, $0.05 USDC on…
- Checkpoint402 Sanctions Screening Screens a person or company name (fuzzy, alias-aware) and/or a crypto wallet address against the US Treasur…
- Cleared Index Trust provider and verification index with a conformant trust-evaluation endpoint: `POST /api/cleared/trust…
- Coinbase Bug Bounty Report x402 vulnerabilities for rewards up to $50,000.
- CVE Database Known vulnerabilities and patches for the x402 protocol.
- CYBERA Compliance API VASP address identification (20,468 addresses, 29 chains), risk scoring, sanctions/mixer screening.
- Decision Anchor 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 Security considerations for TransferWithAuthorization.
- GPT-6 Agent Guard & Calldata Decoder Pre-transaction safety analyzer and calldata decoder for autonomous agents to vet contracts and prevent wal…
- Hermes Plant Action Safety Deterministic pre-execution gate for agent shell, Git, SQL, infrastructure, and deployment actions, with a…
- HostDeFi Token Risk x402 machine-payable multi-chain token risk scanner: instant on-chain safety grades for Solana and EVM toke…
- ICME Labs Formal verification for AI agent actions.
- Immunefi x402 Program Decentralized bug bounty platform with x402 listings.
- KaelAi Wallet trust scoring API for the agentic economy.
- LION Compliance and company lookups for agents: OFAC SDN wallet screening that answers pass, warn or block, a mu…
- Lumi Trades Vendor Trust Free 0-100 trust scores for XRPL-payable x402 sellers, built from unpaid 402-quote probes every 30 minutes…
- Meridian by MioDio Read-only pre-sign checks for agents on Base USDC via x402: OFAC SDN exact-match address screen, intent-dri…
- MIDAX402 Signed EIP-712 conformance verdicts for x402 services, appended to a public registry.
- MoltGuard Agent trust scoring (0-100), Sybil detection with funding cluster analysis, Polymarket integrity, Ed25519 V…
- MoneySwitch Self-hosted x402 payer with per-agent spending keys, budget and host limits, revocation, and human approval…
- OceanAlt Pre-payment check for agents: takes a payee address and returns allow, review or decline with supporting ev…
- Paybound Open-source governance proxy for x402 agent payments.
- Payment Verification Guide Proper payment verification: facilitator trust models, on-chain verification fallbacks, amount and recipien…
- PaySentry Control plane for AI agent payments.
- PolicyLayer Non-custodial spending controls for AI agents.
- Revettr Counterparty risk scoring for x402 agentic commerce.
- ScoutScore Trust scoring for x402 services.
- ScreenSeal Sanctions screening for AI agents against OFAC SDN, OFAC Consolidated Non-SDN, and EU FSF lists, returning…
- SENTINEL AML/CFT compliance intelligence.
- Sentinel/Valeo Enterprise audit layer.
- ShieldAPI x402-native security intelligence API.
- SkyeSkiff Condition-gated rooms for AI agents: each agent signs a wallet challenge and is checked against the room's…
- SpendPreflight Operated by SpendPreflight, an x402 service providing OFAC/domain screening and allow/hold/block payment pr…
- stripe-mcps Trust verification + AML sanctions screening before Stripe/x402 payments.
- TaskMarket Trust Score Requester reputation scoring for TaskMarket (taskmarket.dev): given a requester wallet address, returns a 0…
- TRON USDT Risk Checker Pay-per-request TRON USDT-TRC20 screening for agents, three tiers, all `POST` with `{"address":"T…"}`: `$0.…
- Verdix Checks an EVM address on Base before an agent sends funds to it: OFAC sanctions, scam/phishing lists, live…
- Viridis MCP Security Preflight Deterministic static preflight for caller-supplied MCP manifests that checks endpoint and authentication de…
- VM3 x402 Public Quote Preflight Performs offline structural checks of caller-supplied unsigned x402 v2 payment quotes for $0.01 Circle USDC…
- wren-guard Pro TypeScript/viem guard for agent wallets (capped, simulated sends;
- x402 Agent Safety Store Pre-transaction safety checks for agents on Base: decode what a signature or transaction does before signin…
- x402 Checker (Nock) Free `GET /check?url=` honesty probe of a live x402 URL plus free `GET /board` (pay-to-rank, 24h) and `GET…
- x402 Manifest Check Zero-dependency Python CLI and live x402-paid API for static manifest checks covering network, recipient, a…
- x402 Preflight Audits a public x402 endpoint before payment via required `resource_url` and optional `method=GET|HEAD`, `e…
- x402 Trust Autonomous trust and reliability scoring for every publicly listed x402 endpoint, derived from continuous l…
- x402-sanctions-guard Express and Hono middleware for x402 sellers that screens each payer wallet against OFAC sanctions and scam…
- x402check Preflight check for a live x402 seller URL that returns ok|caution|avoid plus payTo, price, and history bef…