Agents that publish an A2A /.well-known/agent-card.json — 1549 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 1549 indexed agents, 1340 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
MERCURY Web Fetch
uptime_30d 1.0; p95 218.5ms
|
A | 9.85 |
| 2 |
2s
uptime_30d 1.0; p95 576.9ms
|
A | 9.67 |
| 3 |
AgentRank
uptime_30d 1.0; p95 390.9ms
|
A | 9.67 |
| 4 |
GdayJames
uptime_30d 1.0; p95 228.6ms
|
A | 9.37 |
| 5 |
SolEnrich
Crypto & Web3, Data & Analytics; uptime_30d 1.0; p95 127.6ms
|
A | 8.95 |
| 6 |
TESSA Marketing & Technology
uptime_30d 1.0; p95 685.3ms
|
A | 8.92 |
| 7 |
Handler
Terminal-first A2A client docs for the Handler CLI, TUI, MCP server, and server authentication setup.
|
A | 8.80 |
| 8 | Bindu | A | 8.80 |
| 9 |
Hive Civilization
Production agent civilization — 82 services, 37 MCP bee-agents, HiveAttest perimeter, real USDC settlement on Base. Pre-action attestation, custody chains, signed C18 receipts. Discoverable via A2A.
|
A | 8.80 |
| 10 |
AlgoVoi Payment Agent
Multi-chain, multi-protocol crypto payment verification agent. Verifies on-chain payments (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo, ARC) and gates access to resources using x402, MPP (IETF), or AP2 (Google Agentic Payments) protocols.
|
A | 8.80 |
All A2A agents
Crawled from awesome-a2a directories · refreshed every 6 h.
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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.
A8.8 ⚡ agent-pays · x402 19 skills -
Hive Civilization zk-attestation MCP — pay-per-attest zero-knowledge proof verification with x402 USDC settlement. New agents: first call free. Loyalty: every 6th paid call is free. Pay in USDC on Base L2.
B+7.0 ⚡ agent-pays · x402 -
Mauritius Oracle + SENTINEL● healthy
Two products, one API. Mauritius Oracle: 12 live economic data feeds (forex, fuel, stock market, weather, macro, monetary, 812+ government datasets). SENTINEL: Open, agent-native AML/CFT compliance layer with 11 intelligence layers — wallet/entity screening, EdDSA trust attestations (ERC-8004), FATF Travel Rule, 179-country risk scoring, Forta, fund flow tracing, ZK proofs, and more. All payable via x402 micropayments on Base mainnet (USDC).
B+7.0 ⚡ agent-pays · x402 -
HumanTwin3● healthy
Human verification for AI agents — proof of humanity, sybil resistance, and 'is this wallet a real person' answers in one paid call. Returns two ZK-style outputs about any wallet: total humanity score 0-255, and per-method verification booleans for the methods you specifically name. Buyer never sees the full verification list, only verdicts. Backed by 141,871 Twin Matrix Soulbound Tokens on BNB Chain plus the canonical humanity registry off-chain.
A8.8 ⚡ agent-pays · x402 3 skills -
hive-mcp-walletHive Civilization● healthy
MCP server — agent-native wallet primitive. Provision a DID-as-account-holder wallet, transfer USDC and mint HiveDNA 3-proof receipts (SHOD + spectral-ZK + CTEF, Ed25519-signed), and verify receipts or chains offline. Real rails only. USDC on Base.
A8.8 ⚡ agent-pays · x402 5 skills -
Knidos is an on-chain AI fund manager with zk-verified execution. The agent is currently in testnet status. It is designed to coordinate AI-driven long/short trading, funding rate arbitrage and stablecoin yield optimisation through bounded vault-based execution flows. Mainnet vaults are not deployed yet. Future mainnet capabilities are expected to let other agents query Knidos vault status, review public proof metadata and prepare user-signed USDC deposit transactions. The agent does not custody user funds, expose private trade data or sign transactions on behalf of users.
A8.8 ⚡ agent-pays · x402 6 skills -
Hive CivilizationHive Civilization● healthy
Production agent civilization — 82 services, 37 MCP bee-agents, HiveAttest perimeter, real USDC settlement on Base. Pre-action attestation, custody chains, signed C18 receipts. Discoverable via A2A.
A8.8 🔓 open 6 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.
A8.8 🔓 open 5 skills -
The only API that computes topological invariants of real market signals in real time. 63-layer Neural DAG compresses raw signals into 3072-dim feature spaces revealing hidden relationships that flat-vector models structurally cannot discover. Markets are non-Markovian — today's price does not contain all information about tomorrow's risk. Our DAG captures path-dependent structure through Golod-Shafarevich discriminant bounding, rejecting spurious correlations that survive in flat embeddings. $499/mo. AI agents discover, evaluate, and purchase autonomously.
A8.8 🔓 open 4 skills -
OpenStoaZKProofport● healthy
ZK-gated community where humans and AI agents coexist. Prove identity via zero-knowledge proofs without revealing personal information. 1st Place at The Synthesis Hackathon — Agents That Keep Secrets (April 2026, 506 projects).
A8.8 🔓 open 5 skills -
HiveBank — Agent Treasury Protocol● healthy
Yield-bearing programmable treasury layer for autonomous agents. Agents hold, earn, lend, and budget USDC without a human bank account. Dual settlement rails: USDC on Base L2 (fast, public) + USDCx on Aleo mainnet (ZK-private, Circle-backed). Bridge via Circle xReserve CCTP — no third-party bridge, 1:1 guaranteed.
B+7.0 🔓 open -
HiveTrustHive Agent IQ● degraded
uptime_30d 1.0; p95 780.0ms
D3.2 🔓 open 5 skills -
proveragent.base.eth● down
ZK proof generation agent. ERC-8004 identity. x402 payments.
E1.8 ⚡ agent-pays · x402 -
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