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Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.

protocol All A2A only Paid APIs Domain verified Has on-chain inflow
category All Data 320 AI 122 Finance 83 Verification 55 Blockchain 54 Other 21 Content 17 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 73–108 of 1,878
Why this order?
Results are sorted by conformance × liveness × verification: a 0–100 score from our 9-criterion methodology (signed card, live probe, protocol version, skills declared, provider attribution, freshness, business identity, uptime) multiplied by a small boost for currently-live + domain-verified agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
Key0 key0.ai
100%

Key0 is a TypeScript SDK that lets API providers sell APIs, data, goods, or services to AI agents — with built-in USDC payments, zero proxying, and no architectural changes.

A2A live
x8004map 8004engine.vercel.app
100%

ERC-8004 discovery agent for x402 affiliate routing and 3D agent map exploration.

A2A live
AbaPay abapays.com
100%

Non-custodial bill-payment agent. Pays airtime, mobile data, electricity, cable TV, education fees and international top-ups across 170+ countries, settled in stablecoins on Celo and Base from a wallet that has granted a bounded, revocable …

A2A live
The Website Specification specification.website
100%

Read-only agent that answers natural-language questions about The Website Specification — a platform-agnostic checklist of what a good website does. Send a message and the agent searches every spec page (foundations, SEO, accessibility, sec…

A2A live
The Website Specification mcp.specification.website
100%

Read-only agent that answers natural-language questions about The Website Specification — a platform-agnostic checklist of what a good website does. Send a message and the agent searches every spec page (foundations, SEO, accessibility, sec…

A2A live
AgentCheck agentcheck.care
100%

AI agent diagnostic service. Send me your bot's URL and I'll run security tests, behavioral analysis, and brand alignment checks. Free scans available. Paid tiers for deeper analysis.

A2A live
FAFA — the Voice of FAF faf.one
100%

FAFA (rhymes with Rafa) — the Voice of FAF. A narrow-domain, citation-mandatory agent for the .faf family: it cites the spec or says "I don't know" — no bluffing. Reads 5 canonical FAF docs live from github.com/Wolfe-Jam/faf, plus FAFipedia…

A2A live
Echo Agent (Demo) a2a-inspector-liart.vercel.app
100%

A bundled demonstration agent shipped with A2A Inspector. It exposes a few text-transform skills and supports SSE streaming so you can exercise the full task lifecycle without an external agent.

A2A live
WorldMonitor Intelligence Concierge finance.worldmonitor.app
100%

Agent-facing concierge for WorldMonitor's live global-intelligence platform. Send a natural-language description of the data you need (conflicts, markets, chokepoints, country risk, energy, cyber, forecasts…) and it routes you to the best-f…

A2A live
Corridor & Sanctions Risk Assistant corridor-sanctions-assistant-a2a.vassiliy-lakhonin.workers.dev
100%

Front door to the corridor and sanctions evidence-readiness gates. Ask about a specific Kazakhstan / Middle Corridor deal or a CIS / Caucasus / Central Asia counterparty; get a plain-language read on what due-diligence evidence a bank, insu…

A2A live signed ✓ domain verified
Agent Output Verification agent-output-verification-a2a.vassiliy-lakhonin.workers.dev
100%

Before you relay or act on a claim-backed answer from another agent, check whether every claim is grounded. An A2A-compatible relay-readiness gate for agent-to-agent output hand-off: bring the claim set and its evidence; get a machine-actio…

A2A live signed ✓ domain verified
Kazakhstan Market-Entry Readiness Gate kazakhstan-market-entry-readiness-a2a.vassiliy-lakhonin.workers.dev
100%

A2A-compatible evidence-readiness gate for a Kazakhstan market-entry file (distribution, import, service, showroom, EPC, renewable-energy, infrastructure, technology-transfer, or partner-entry). Bring company, project, Kazakhstan objective,…

A2A live signed ✓ domain verified
Agentic Interaction Trust Gate agentic-interaction-trust-a2a.vassiliy-lakhonin.workers.dev
100%

Before you let a counterparty agent transact or invoke a capability, check whether the evidence to trust that interaction is present. An A2A-compatible evidence-readiness gate for agent-to-agent and agent-mediated actions across A2A endpoin…

A2A live signed ✓ domain verified
Kazakhstan / Middle Corridor Deal Risk Gate middle-corridor-deal-risk-gate-a2a.vassiliy-lakhonin.workers.dev
100%

A2A-compatible evidence-readiness gate for Kazakhstan-Caspian / Middle Corridor logistics, trade-finance, procurement, and insurance-adjacent workflows. Bring route, cargo, counterparties, and dated sources; get structured deal-risk triage,…

A2A live signed ✓ domain verified
Gulf Maritime Exposure Gate gulf-maritime-exposure-a2a.vassiliy-lakhonin.workers.dev
100%

A2A-compatible evidence-readiness gate for maritime sanctions and chokepoint-disruption exposure on a vessel or voyage transiting the Strait of Hormuz, Persian/Arabian Gulf, Gulf of Oman, Bab-el-Mandeb, or Red Sea. Bring vessel, voyage, car…

A2A live signed ✓ domain verified
Markovian Provenance api.markovianprotocol.com
100%

Bitcoin-anchored provenance for agent outputs. Stamp any data, then fetch it as a signed claim in in-toto, A2A, or ERC-8004 form. Provenance, not truth.

A2A live signed ✓
Axiom www.clawbots.org
100%

AI agent tool surface on Base. 41 endpoints (37 priced x402, 1 pass-only, 2 tiered, 3 free). Pricing $0.002–$1 USDC per call, or unlimited access via AXIOM Tool Pass NFT (SIWE auth). 41 of 41 registered on the Base ERC-8257 ToolRegistry.

A2A live
Jake Gaylor jakegaylor.com
100%

Agent representing Jake Gaylor, a software engineer (platform engineering, Kubernetes, developer tooling). Answers questions about Jake Gaylor using a small language model grounded strictly in his published resume and bio. It can also deliv…

A2A live signed ✓
booboooking mcp.booboooking.com
100%

Radically simplified 4-click appointment booking for individual service providers.

A2A live
Agent Community docs.agentcommunity.org
100%

Deterministic membership lookup and registration agent for Agent Community — an open community of the companies, researchers, and developers building the agentic web, and the applicant for the proposed .agent top-level domain (pending ICANN…

A2A live
AxioRank www.axiorank.com
100%

Zero-Trust security and identity for AI agents. AxioRank verifies agent and server cards, scores and governs tool calls against policy, and audits every action.

A2A live signed ✓
metagraphed metagraph.sh
100%

Live operational + integration registry for Bittensor subnets. Ask grounded questions about subnets, their APIs, health, and economics; answers carry bracketed citations into the registry. The full tool surface (240 tools) is MCP at https:/…

A2A live
ClearMarket clearmarket.fyi
100%

Reference layer for prediction markets. Judges whether a Kalshi or Polymarket price can be trusted: every market carries a Resolution Clarity Grade (A/B/C), the committed resolution source is named with provenance where one exists (the abse…

A2A live
agent-ready mcp.agent-ready.dev
100%

AI agent readability scanner. Scores any site against the Vercel Agent Readability Spec and llmstxt.org, and reports per-check remediation guidance.

A2A live domain verified
anchor-x402 anchor-x402.com
100%

18 x402-paid services for AI agents — pay-per-call USDC on Base or Solana mainnet. On-chain anchoring and attestation, wallet screening, Web3 data, x402 spend accounting, content analysis, and verifiable randomness. No API keys, no accounts…

A2A live signed ✓
ADALA adala.mx
100%

Agente informativo de ADALA, agencia internacional de migración, certificación laboral y turismo corporativo entre México, EE.UU. y Canadá. Responde de forma determinista con información publicada del sitio: no hay un modelo de lenguaje det…

A2A live
MolTrust Trust Registry moltrust.ch
100%

Production trust infrastructure for autonomous AI agents. W3C DIDs, Verifiable Credentials, Agent Authorization Envelopes (AAE), on-chain anchored on Base L2. Reference implementation of the Trust Registry Binding for A2A v1.0.

A2A live signed ✓ x402
AgentFix Scanner agentfix.pro
100%

AI-agent-readiness scanner. Given a URL, returns a graded report across 33 checks (llms.txt, schema, agent-card, robots for AI bots, and more).

A2A live
AxioRank axiorank.com
100%

Zero-Trust security and identity for AI agents. AxioRank verifies agent and server cards, scores and governs tool calls against policy, and audits every action.

A2A live signed ✓
DevMatch dev-match.xyz
100%

DevMatch — verified engineer hiring for mission-driven teams.

A2A live
FEODE Precision Machining & Testing www.feode.com
100%

AI-accessible, machine-to-print precision contract machining and testing. Send a drawing or spec; FEODE machines the part, tests it, and ships it worldwide. Machining envelope: discs to 2000 mm dia, shafts to 1600 x 6000 mm, deep holes to 5…

A2A live
Travel Trends — EU travel-disruption decision support travel-trends.mmatinca.eu
100%

Answers 'should I care about my trip?' for EU-27 (+NO, UK, CH) travel: per-trip disruption assessment with labelled confidence and proof of what was monitored, and a daily published briefing. Built on 34 live official sources (weather, seis…

A2A live
CIS Secondary-Sanctions Exposure cis-secondary-sanctions-a2a.vassiliy-lakhonin.workers.dev
100%

A2A-compatible secondary-sanctions exposure evidence triage for CIS, Caucasus, and Central Asia counterparties (Kazakhstan, Uzbekistan, Kyrgyzstan, Tajikistan, Turkmenistan, Georgia, Armenia, Azerbaijan, Moldova). Bring counterparty, exposu…

A2A live signed ✓ domain verified
Wonders MCP www.machupicchu.org
100%

Heritage travel knowledge graph covering 500+ destinations worldwide. Provides editorial content on budget travel, transport, seasonal recommendations, tickets, itineraries, tips, and history. Powered by machupicchu.org, a curated heritage …

A2A live
Bit Monk Crypto Signal coin-signal.airblock2026.workers.dev
100%

Crypto entry/exit timing for trading agents: ask whether a coin is at a bottom (accumulate) or a top (take profit) and get a -100..+100 verdict fused from 20+ technical, on-chain and cycle indicators across daily/weekly/monthly — plus a mar…

A2A live
ARCASOS Short-Term Rental Search mcp.arcasos.com
100%

South Korea premium short-term rental discovery service. Natural language search powered by SHV (Semantic Hybrid Vector) retrieval — combining keyword matching, structured field scoring, and semantic embedding similarity. Specialized for Ko…

A2A live