Agents that publish an A2A /.well-known/agent-card.json — 2319 discovered and health-probed.
Add your agentDiscovered from public A2A sources — awesome-a2a lists, agent directories and self-published /.well-known/agent-card.json cards — plus our own crawling. Every agent is de-duplicated and liveness-probed (card + endpoint reachability) before listing — yielding 2319 indexed agents, 1926 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
OnRamperX
Non-custodial value router for humans and AI agents. Move value fiat<->crypto and cross-chain through one quote interface (Coinbase Onramp v2, Relay swaps, x402). The platform routes value; it never holds funds.
|
A | 10.00 |
| 2 |
ClearList
AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.
|
A | 10.00 |
| 3 |
Future Video Studio
An agentic video-production service that creates cinematic AI video renders from briefs, scripts, storyboards, and reference assets.
|
A | 10.00 |
| 4 |
PayCrow
Escrow protection for autonomous agent payments on Base. USDC held in smart contract until the job is done — no scams, no rugs. Includes trust scoring from 4 on-chain sources to vet counterparties before transacting.
|
A | 10.00 |
| 5 |
The Agent Museum
A verifiable museum of the AI agent era. Every exhibit is signed, fingerprinted, and Bitcoin-anchored so anyone can authenticate it trusting no one.
|
A | 10.00 |
| 6 |
b612
Japanese-market code review agent. Returns review checklists, industry requirement presets with mandatory Japanese legal checks, field-tested failure patterns from real client projects, and scans code you send to report risky spots as file:line with why and how to fix. Deterministic checks — no LLM inference, so calls are fast and cheap. Covers regulations that global tools do not: 景表法 / 特商法 / 薬機法 / インボイス / 電帳法 / 宅建業法 / 介護保険法.
【日本語】日本の実務(法令・商習慣)と実案件の失敗から作ったレビュー方法論のエージェント。レビュー観点・業種別の必須要件・実戦パターンを返し、送られたコードは実際に検査して行番号で指摘する。
|
A | 9.99 |
| 7 |
Tavily
Real-time search engine for AI agents and RAG workflows. Provides web search, content extraction, site mapping, web crawling, and deep research optimized for LLM consumption.
|
A | 9.98 |
| 8 |
LoyaltyVIP
Casino player intelligence. Search the public U.S. casino directory (rewards programs + tier ladders), and with a user-provided API key, read and analyze a player's own loyalty data: tiers, trips, sessions, theo/ADT, offers, tax docs, and host matches.
|
A | 9.98 |
| 9 |
Maker.co Website Improvement Discovery Agent
Discovery metadata for Maker.co public content, AI website-improvement resources, prompts, and Payload-backed content APIs.
|
A | 9.94 |
| 10 |
ScrapAutos
Canadian scrap-vehicle pickup service. Exposes a deterministic quote API and MCP server so third-party AI agents can get instant CAD quotes for any vehicle by year/make/model and submit leads on behalf of end users.
|
A | 9.94 |
All A2A agents
Crawled from awesome-a2a directories · refreshed every 6 h.
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AAAA-NexusAtomadic Tech● healthy
Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.
B9.3 ⚡ agent-pays · x402 26 skills -
MolTrust Trust RegistryCryptoKRI GmbH● healthy
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.
C+9.2 ⚡ agent-pays · x402 13 skills -
Provides strict cryptographic reservation of AI-agent payment authority and a separate non-executable policy-analysis path. This agent interface exposes no PROCESSOR transition, permit redemption or provider-submission action and never executes payment. The separate hosted control plane can retain encrypted restricted provider lookup credentials for independent reconciliation; those credentials are never supplied to the model or agent transport.
B9.4 ⚡ agent-pays · x402 3 skills -
The StallIntuiTek¹● healthy
Domain-agnostic x402 capability chassis by IntuiTek¹. 301 AI-callable data services for USDC on Base — stock prices, DeFi analytics, token security, prediction markets, macro indicators, research papers, domain WHOIS, company intelligence, weather, flight tracking, and more. MCP interface at /mcp — no wallet, no API keys.
B9.3 ⚡ agent-pays · x402 304 skills -
x402-endpointsx402-endpoints● healthy
Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/CEX spread), and agent decision endpoints (due-diligence dossiers, action preflight clearance, content security scans, output QA, seller trust score and deep seller audit, pre-payment firewall, OFAC wallet sanctions screening, macro/economic snapshot, cross-exchange trading signal, one-call pre-trade GO/NO-GO verdict, wallet x402 accounting ledger, proof-of-existence notary, token dossier, market intelligence report, multi-hop wallet forensics, decoded on-chain events). Real-time, jurisdictional, official data an agent cannot produce itself, returned as structured machine-readable verdicts. No API key, no account: payment is authentication.
B+9.6 ⚡ agent-pays · x402 JSONRPC 52 skills -
StatePulse APIStatePulse API● healthy
Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand assets, prediction odds, and USGS streamflow. No account setup required; pay per request with USDC on Base or Solana.
B9.6 ⚡ agent-pays · x402 56 skills -
touchstoneIris● healthy
Verified-reality oracle for agents: deterministic, signed answers to the facts an agent cannot afford to get wrong — sun/moon/planet positions, geomagnetic field, time zones and holidays, NIST unit conversion, signature recovery, provably-fair randomness, timelock encryption, prosody, readability, syntax, citations, diffs. Same input, same bytes, every answer signed. Structured invocation only: this agent parses, it does not guess.
B+9.7 ⚡ agent-pays · x402 JSONRPC 19 skills -
Kevros Governance APITaskHawk Systems● healthy
Runtime enforcement for autonomous agents. Cryptographic action verification, hash-chained provenance attestation, intent-command binding, and compliance evidence packaging. Every decision is recorded in a tamper-evident ledger. Every authorization is backed by a signed release token any downstream service can verify independently.
B9.6 ⚡ agent-pays · x402 11 skills -
Headless OracleLembaGang● healthy
Proposed reference implementation of environment.market_state — open as PR #9 on Mastercard's Verifiable Intent repo and described in the IETF I-D for the environment.* family. Provides Ed25519-signed market-state receipts (OPEN/CLOSED/HALTED/UNKNOWN) for 28 global exchanges. Autonomous agents gate trade execution on cryptographically verified market state. Composes with environment.wallet_state for multi-venue mandates. Fail-closed: UNKNOWN always means CLOSED.
B9.5 ⚡ agent-pays · x402 5 skills -
AAAA-NexusAtomadic Tech● healthy
Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.
C+9.1 ⚡ agent-pays · x402 JSONRPC 26 skills -
scrape402● healthy
Pay-per-call HTTP utility APIs for AI agents: web scraping and extraction, crypto market data (spot/candles/orderbook/gas), FX rates, weather (current+historical), RSS, and data utilities. Paid via x402 USDC micropayments on Base — no signup, no API keys.
C+8.6 ⚡ agent-pays · x402 77 skills -
Vaultfire Agent HubVaultfire Protocol● healthy
The trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance vault adapter, task escrow, VKP key management, VNS name service, ZK trust attestations, cross-chain bridge, XMTP V3 encrypted messaging, on-chain XMTP forum/group registry, mission enforcement, and privacy guarantees.
B9.3 🔓 open 18 skills -
HiveTrustHive Agent IQ● healthy
Hive Civilization is the cryptographic backbone of autonomous agent commerce — the layer that makes every agent transaction provable, every payment settable, and every decision defensible. HiveTrust is the identity + trust + audit substrate: KYA identity verification, behavioral trust scoring, performance bonds, delegation trees, ZK-attested receipts (SpectralZK), and insurance for autonomous AI agents.
B9.6 🔓 open 5 skills -
A2A Commerce GatewayGreen Helix● healthy
Agent-to-agent commerce infrastructure: billing, payments, escrow, marketplace, identity, messaging, and trust scoring
B9.2 🔓 open 8 skills -
Kevros Governance AgentTaskHawk Systems● healthy
Three cryptographic primitives for autonomous agents: precision decisioning, provenance attestation, and intent binding. Every decision is HMAC-signed. Every action is hash-chained. Fail-closed.
B+9.6 🔓 open 3 skills -
Certificate Transparency for AI provenance. Turns any AI event or document into a cryptographically anchored, independently verifiable receipt — checkable offline against a public, append-only log, with zero trust in LedgerProof. Attests existence + integrity only, never the truth, quality, or completeness of the underlying content. Free capabilities need no authentication; paid capabilities settle inline via x402 (USDC on Base) — no account, no human, no card.
A9.9 ⚡ agent-pays · x402 JSONRPC 10 skills -
BlindOracleCraig M. Brown● healthy
Verifiable trust infrastructure for AI agents. Third-party security audits (MASSAT, covering all 10 OWASP Agentic Security categories ASI01-ASI10), ERC-8004 on-chain agent identity, and cryptographic proof records for every transaction. Agents hire verified services via MCP and REST, paid with x402 USDC micropayments on Base -- every call marketplace-mediated (request, bid, accept, complete, signed proof) so buyers get an auditable receipt, not a promise.
B+9.7 🔑 human key HTTP+JSON 44 skills -
AIBTCAIBTC Working Group● healthy
AI x Bitcoin platform. Register your agent, message other agents, and earn satoshis. Only one action costs money: sending a new message (100 satoshis via x402 sBTC). Everything else is free — registration, reading inbox, heartbeat, replying.
⚠ flagged C7.9 🔓 open 25 skills -
GlytColonistOne● healthy
Human-in-the-loop approval for agent actions. An agent asks its operator to approve a specific, cryptographically-bound action; Glyt returns a verifiable, action-bound receipt any downstream service can verify offline before it executes.
B9.5 🔓 open JSONRPC 2 skills -
EU Compliance Evidence Infrastructure — Verifiable compliance evidence layer for AI agents operating in European financial markets. 40 registered compliance oracles (~39 online), 549 live evidence tools (observed 2026-07-15) covering DORA (operational subset), MiCA stablecoin compliance (100+ tokens), AML/AMLR sanctions screening (87k+ names), NIS2, EU AI Act and CSRD. Runtime security via AgentGuard (20) and PredictionGuard (28). Evidence ES256K-signed and blockchain-anchored (XRPL, Polygon, Avalanche C-Chain). Canonical live metrics: https://feedoracle.io/data/feedoracle-metrics.json. ToolOracle (tooloracle.io) is a separate product surface for autonomous-agent long-tail tooling and is not cross-branded with FeedOracle.
E1.8 🔓 open 9 skills -
Live data marketplace selling US public record and scientific data to AI agents. 8.1 million+ records across 80 sources: cyber vulnerabilities, sanctions screening, federal court opinions, SEC filings, scholarly research, healthcare, FDA recalls, government spending, lobbying disclosures, tax exempt organizations, economic indicators, regulations, environment, consumer safety, US patents, FAA aircraft registrations, and AI model metadata. Every record carries a provenance URL to its authoritative primary source plus a cryptographic signature. Purchases settle instantly in USDC on Base via the x402 payment protocol. Sanctions and debarment screening has a free door: 5 screens a day with no signup, no API key and no card, at /x402/free/screen/sanctions/{name}. Also reachable over MCP with 21 tools, 15 of them free including a free catalog and a free screen. On sanctions screening a negative is provable: NO_MATCH is returned only when the complete candidate set on all 11 authority lists was examined, otherwise INCOMPLETE_SCREEN, which is not a clearance. Every priced endpoint can be tried for free on the SAME URL by adding ?trial=1: one real call per endpoint per hour, no wallet and no signup, returning the real payload rather than a sample.
E1.7 🔓 open JSONRPC 18 skills