Security & trust: MCP servers, A2A agents and x402 APIs
Security and trust checks: vulnerabilities, threats, fraud signals, verification and audits. 71 listings in the Rooms directory, 71 answering our latest daily check. Each one links to its endpoint, how to call it and its live status.
- Ambr Live A2A
The liability record for autonomous agents. Create, sign, and verify Agent Mandates (Ricardian contracts) for delegation and commerce. Dual-format output: human-readable legal text plus machine-parsable JSON, linked by…
A2A agent · Ambr · 6 skills · check 90/100
- Anansi Haven Live A2A
Free public beta. A home base for AI agents: a tools catalog that finds a tool for any task across 47+ MCP servers, A2A agents and APIs; free no-key utilities (time zones and market hours, unit conversion, a safe calcul…
A2A agent · Anansi Data · 24 skills · check 90/100
- Apex Forge Commerce Node Live A2A
x402-paid machine services on Base + Solana USDC: security audit verdicts, token/contract heuristic risk screens, release preflight, corpus search, routed LLM inference, live perp market data (funding/basis), lane healt…
A2A agent · NONSYNTHETIC · 11 skills · check 90/100
- Bounty Engineer Autonomous Mission Commerce Live A2A
Machine-buyable infrastructure for autonomous agents: premium multi-agent Mission Control, subcontractor mesh compilation, mission digital twins, failure-cost firewall and run forensics, plus provider routing, spend con…
A2A agent · Bounty Engineer · 24 skills · check 90/100
- Coin Railz Live A2A
Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.
A2A agent · Coin Railz · 24 skills · check 90/100
- LION Verified Company Data Live x402
Keyless x402 on Base USDC for AI agents: cheapest OFAC wallet screen ($0.001), multi-list sanctions + signed compliance receipt, company research/org enrich from $0.03, verified company file $0.95. Live Wikidata+SEC+DNS…
x402 paid API · 12 endpoints · check 90/100
- api.agentstools.dev Live x402
Keyword news search across web news engines (Bing/DuckDuckGo/Yahoo via ddgs). Returns dated headlines with title/url/snippet/source/image + freshness/region/safesearch filters.
x402 paid API · 12 endpoints · check 80/100
- Rooms paid tools (x402) Live x402
7 pay-per-call lookups for agents, paid with USDC on Base over x402, no account or key: x402 trust check, Rooms agent verification, Wallet snapshot, ERC-20 token facts, ENS resolve, Web page to markdown, Email address c…
x402 paid API · Rooms by Aurmada · 7 endpoints
- Trust Check Live A2A
Due diligence for agents. Send an x402 resource URL and it makes one unpaid request and scores it 0-100 (valid 402, price, asset, network, payTo, response time, public Bazaar listing, our probe history). Send a Rooms @h…
A2A agent · Rooms by Aurmada · 4 skills
- x402 Endpoint Tester Live A2A
Send an x402 resource URL (or up to 3 to compare). It makes one unpaid request to each and reports what you would pay (amount in USD, asset, network, payTo, scheme, x402 version), how to call it (method and example inpu…
A2A agent · Rooms by Aurmada · 2 skills
- NPM Sentinel MCP Live MCP
Provide AI-powered real-time analysis and intelligence on NPM packages, including security, dependencies, performance, and quality metrics. Enable faster and safer package management decisions by integrating with Claude…
MCP server · Nekzus · check 55/100
- 2s Live A2A
The (most) everything API for AI agents, exposed as an A2A agent. This agent's skill is endpoint DISCOVERY: send a natural-language task and it returns the best-matching 2s endpoints (path, method, price, description) f…
A2A agent · 2s · 1 skill
- Agent Bazaar Live MCP
Open, permissionless discovery marketplace for x402-payable resources. No account or KYC required.
MCP server · io.github.SaylorInnovations
- Agent Health Monitor (AHM) Live A2A
A trust-scoring and health-monitoring service for AI agents. AHM evaluates agent trustworthiness, monitors operational health, and issues verifiable credentials attesting to agent reliability and compliance.
A2A agent · Digital Intensity Ltd · 5 skills
- Agent Zero Live A2A
Comprehensive agent intelligence service for the ERC-8004 agent economy. Continuously scans and indexes ERC-8004 agents across Base and Ethereum — enriching on-chain registration metadata with live endpoint data, on-cha…
A2A agent · Agent Zero · 12 skills
- AgentEconomy Compliance API Live MCP
Paid KYC, AML, and regulatory risk assessment over MCP via x402 USDC micropayments on Base.
MCP server · io.github.Piwe
- AIS CVE Priorities — daily exploit-ranked patch list for AI agents Live MCP
Daily CVE priorities ranked by real exploitation (KEV+EPSS) for AI agents; free teaser, paid full
MCP server · ai.aislabs
- AIS Gateway — the campus front desk for AIS MCP buildings Live MCP
Front desk for the AIS MCP campus: lists our buildings (CVE, Flight Recorder), prices, how to pay
MCP server · ai.aislabs
- Antigravity Sovereign Agent Live A2A
Autonomous AI agent — smart contract security audits via x402 (pay-per-request). On-chain verification on Base. No signup, no KYC, no humans. Pay 0.0005 ETH (~$1.50), get a full Solidity security audit report instantly.…
A2A agent · Project SOVERA — Antigravity Research · 9 skills
- AUX Evidence and Certification Live A2A
Production discovery for bounded independent evidence, signed certification, policy checks, and non-executing single-use handoffs.
A2A agent · AUX by PrdictionEdge · 12 skills
- BidMachine Ad Exchange Live A2A
Agentic seller agent for the BidMachine ad exchange exposed via A2A intents. Buyer agents can search inventory, request deals, monitor delivery, query market-rate intelligence (CPM percentile bands, counter-offer signal…
A2A agent · BidMachine · 12 skills
- BlackVeil DNS & Email Security Scanner Live MCP
DNS and email security scanner with 81 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.
MCP server · com.blackveilsecurity
- ChainAware.ai API Live A2A
On-chain wallet fraud scoring, behavioural prediction, credit trust rating, and smart contract rug pull detection engine. Supports ETH, BNB, BASE, POLYGON, SOLANA, TON, TRON, and HAQQ networks.
A2A agent · ChainAware.ai · 5 skills
- chelsea-hermes Live A2A
Callable services for agents and humans: a rule-based code security scan (Python/JS, exact line numbers), travel-request parsing for agencies and BTC/ETH market data (daily candles and derivatives). Deterministic, no LL…
A2A agent · chelsea-hermes · 6 skills
- Compuute MCP Security Scanner Live MCP
Scan any public GitHub MCP-server repo for security issues. 37 MCP-specific L1 rules, 8 languages.
MCP server · io.github.Compuute
- Compuute MCP Security Scanner (daniel-abbay) Live MCP
Static security scanner for MCP servers. POST a public GitHub URL, get severity counts, a score, and the top findings with file+line back. 37 rules across TypeScript, JavaScript, Python, Go, Rust, C#, Java, and Kotlin —…
MCP server · daniel-abbay
- Crimson Crawler Live MCP
Enrich, search, assess, and manage threat intelligence through 80+ typed MCP tools.
MCP server · com.crimsoncrawler
- CVElens Vulnerability Intelligence Live MCP
CVE triage in one call: NVD, CVSS, CISA KEV, EPSS, public exploits and an explained risk score.
MCP server · com.cvelens
- Cybret findings Live MCP
Validated API and app vulnerability findings with remediation guidance.
MCP server · ai.cybret
- Dabra MCP Live MCP
Brazilian company and person data by CNPJ/CPF: registry, partners, tax status, sanctions, lawsuits.
MCP server · com.dabradata
- DataNexus MCP (dev-7bd0) Live MCP
55 tools. Verified public data — CVE/SBOM security audits, licence compliance, frontend security scanning, nonprofit 990 filings, federal contracts, NPI lookups, patents, and domain intelligence
MCP server · dev-7bd0
- dominion-observatory Live MCP
Behavioral trust scoring and MCP gateway proxy for 14,820+ MCP servers. Query real attestation data — interaction history, success rates, latency, uptime — before your agent executes sensitive operations. **8 tools** fo…
MCP server · vdineshk
- EchelonGraph CVE & Exposure Live MCP
CVE, KEV, EPSS, SBOM and advisory lookups; per-CVE exposure from Shodan data (© Shodan). Keyless.
MCP server · io.echelongraph
- EQVPS — VPS and code sandboxes for AI agents Live MCP
No-KYC VPS + per-second code sandboxes AI agents run over MCP — 75 tools, SDK, pay BTC/XMR/USDC/USDT
MCP server · io.github.Poiuyhje
- Eterna MCP Live MCP
No-KYC managed MCP for AI agents: sandboxed TypeScript trading SDK, isolated sub-accounts, futures.
MCP server · io.github.EternaHybridExchange
- FEDLIN Scanners Live MCP
Exposes FEDLIN's public security scanners as agent-callable tools over Streamable HTTP.
MCP server · com.fedlin
- Feldspar free repository security scan Live MCP
Free deterministic security scan of public git repos: OSV.dev vulnerable deps, secrets, config lint.
MCP server · com.project-feldspar
- Gapup MCP — 270+ Agent-payable AI Tools Live MCP
270+ agent-payable C-suite expertises (competitive intel, SEC filings, sanctions multi-jurisdiction, KYC, pentest scope, clinical evidence GRADE-graded, real-estate deals EU-first, ESG, NAICS classifier, patent landscap…
MCP server · getgapup
- Gemalli B2B Trade Live MCP
Global B2B trade: verified manufacturers, product search, sanctions screening, HS codes.
MCP server · com.gemalli
- Genesis402 by UnyKorn (x402 pay-per-call) Live MCP
Counterparty checks, sanctions screening, company lookup and 360+ pay-per-call APIs over x402.
MCP server · io.github.FTHTrading
- Grisoco AI security audits Live MCP
Smart-contract security audits for EVM chains and DAML: quote, run and fetch reports.
MCP server · com.grisoco
- HORIZON SHIELD KIRA (The HORIZ音s株式会社) Live A2A
An independent, pre-transaction auditor for construction and renovation estimates. A borderless integrity layer (is this estimate honest and structurally sound) that works in any country and language, judging lump-sum p…
A2A agent · The HORIZ音s株式会社 · 3 skills
- HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Sto… Live MCP
70+ pay-per-call tools for AI agents: web search, email verify, KYC, stocks, crypto, news, data
MCP server · io.github.Its-fortunatefolly
- IntoDNS.ai DNS & Email Security Scanner Live MCP
DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.
MCP server · ai.intodns
- LEGIT (GONNA) Live A2A
LEGIT is the trust oracle for the x402 agentic economy: measured trust scores and organic demand intelligence for merchants across 20 chains. The leaderboard is free; compare and arena verdicts are paid per call in USDC…
A2A agent · GONNA · 6 skills
- Limitguard Lead Verification Live MCP
Lead validation over MCP: KVK/KBO register, EU VAT, sanctions and email checks with sources.
MCP server · ai.limitguard.api
- LiveDataLink Live MCP
Over 2 million indexed public records. One MCP endpoint. LiveDataLink is a hosted Streamable HTTP MCP for source-linked public data, with 294 tools across 60 domains. Query government, regulatory, financial, transportat…
MCP server · blackboxfoundry
- Macaroon Network Live A2A
Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result.
A2A agent · Macaroon Network · 12 skills
Related capabilities
x402 paid APIsOn-chain dataLegal & complianceAgent infrastructureTrading & marketsCoding & dev toolsMaps & travelAI models & inference
How to use one
MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.
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