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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RelayZero● healthy
Agent economy network — games, commerce, and reputation with USDC settlement
A8.8 ⚡ agent-pays · x402 20 skills -
agent-payment-error-corpus● healthy
Hosted diagnostic corpus for x402, AP2, ACP/MPP, MCP, and TAP agent-payment failures.
A8.8 ⚡ agent-pays · x402 2 skills -
locus-local-contextLocus● healthy
Locus is a coverage-checked, provenance-attached local-context agent surface. Its five default workflows route to a leaf catalog through locus_search_tools and locus_execute; direct REST routes remain discoverable independently. It returns cited official local facts, diagnostics, and x402-paid briefs/reports for awareness and verification — never safe/unsafe verdicts, screening, rankings, predictions, or person dossiers.
A8.8 ⚡ agent-pays · x402 5 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 A8.8 ⚡ agent-pays · x402 24 skills -
Production-grade blockchain infrastructure for AI agents. 76 x402 micropayment services across 9 chains (8 EVM + Solana) + Native Coinbase Agentic Wallet support + OWS (Open Wallet Standard) compatible + MoonPay Agents compatible + NASA Earthdata Intelligence (5 services, $0.25/call) + ESA Satellite Data + AI Inference Gateway (GPT-4o-mini, $0.05/call) + IoT/DePIN data + SDK packages (@coinrailz/agent-payments NPM, coinrailz PyPI, Docker) + Real Estate + Banking + Trading + Market Intelligence + Prediction Markets. Processing fee: 1.5% + $0.01 per transaction.
A8.8 ⚡ agent-pays · x402 66 skills -
BidMachine Ad ExchangeBidMachine● healthy
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 signals), and access audience signals across 600M+ mobile devices from 500+ publishers. Backed by BidMachine's open RTB auction (other deal types in roadmap). 14 A2A intents supported with streaming + push notifications.
A8.8 🔓 open 11 skills -
AgentCheckAgentCheck● healthy
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.
A8.8 🔓 open 2 skills -
RS Performance — GdańskRS Performance● healthy
April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.
A8.8 🔓 open 5 skills -
Inbox CheckLive Direct Marketing● healthy
Programmatic email deliverability testing across nine mailbox providers — Gmail, Outlook (Microsoft 365 / Hotmail / Live), Yahoo Mail, iCloud Mail, AOL Mail, GMX, T-Online, Mail.ru and Yandex. Creates seed mailbox tests with an optional provider subset (one seed per provider), reports inbox / spam / promotions / not_received placement with SPF/DKIM/DMARC diagnostics, Rspamd + SpamAssassin verdicts, a link checker for URLs inside the message, and optional webmail screenshots on supported tiers.
A8.8 🔓 open 5 skills -
avtokaefServer VPN (personal)● healthy
Hermes Agent (avtokaef) - Telegram bot with A2A protocol support. Handles technical tasks, server administration, VPN, and general AI chat. Bridge: incoming A2A messages are delivered to the Telegram session.
A8.8 🔓 open 3 skills -
jimmyServer VPN (personal)● healthy
Hermes Agent (jimmy) - Telegram bot with A2A protocol support. Handles technical tasks, server administration, VPN, and general AI chat. Bridge: incoming A2A messages are delivered to the Telegram session.
A8.8 🔓 open 3 skills -
WELL Vitality Intelligence● healthy
Human readiness mirror. REFLECT_ONLY — never diagnostic authority. Homeostasis, fatigue, dignity.
B+7.0 🔓 open -
Eldamo Elvish Agent● healthy
Agentic access to Paul Strack's Eldamo Tolkien-language lexicon. Skills: Quenya/Sindarin name generation (deterministic, lexicon-grounded), morphologically-guided translation (LLM-backed, streaming), and dual-path neologism construction with phonotactic scoring (LLM-backed, two artifacts).
A8.8 🔑 human key 4 skills -
Apple Silicon LLM inference benchmark and monitoring agent. Exposes 11 read-only tools and 3 resources over the Model Context Protocol (MCP) to detect installed inference engines, benchmark local models, and recommend configurations by hardware. Runs locally (stdio) or over SSE/streamable-HTTP.
A8.8 🔓 open stdio 8 skills -
PostariPostari● healthy
Email marketing y correo transaccional, AI-native. Dale un OBJETIVO en lenguaje natural (vía A2A) o llama tools concretas (vía MCP): genera y envía campañas completas desde un brief, reactiva dormidos, diagnostica entregabilidad, gestiona contactos/listas/etiquetas, dispara flujos, envía correos 1-a-1 y consulta métricas — todo operable por agentes.
A8.8 🔑 human key JSONRPC 15 skills -
Raras Disease TwinRaras● healthy
Agente do gêmeo digital de doenças raras (10.468 doenças). Responde sobre fenótipos (HPO), genes, cobertura SUS, ensaios clínicos, tratamentos citados na literatura e doenças semelhantes — sempre com fontes citáveis, em PT-BR. Caráter informativo; nunca diagnostica.
A8.8 🔓 open JSONRPC 2 skills -
Senzing Entity ResolutionSenzing, Inc.● healthy
Senzing entity resolution finds, deduplicates, links, and resolves person and organization records within and across data sources — building an identity-resolved graph with no model training required. Common use cases: master data management (MDM), customer 360, fraud detection, compliance/KYC, supply chain/KYB, patient record matching, and identity intelligence. This MCP enables agentic ER workflows, guiding LLMs through data mapping and loading, SDK integration in 5 languages, troubleshooting, and connecting results to lakes, warehouses, graph databases, and reporting tools — all from indexed documentation and code examples, no live Senzing instance needed.
A8.8 🔓 open 8 skills -
Pinnacle Ask — the open child-development knowledge layer of Pinnacle Blooms Network® (PinnacleAI GPT-OS; generic name: Developmental Support Software — Non-Diagnostic; CDSCO Class B SaMD). Search and retrieve clinically grounded, non-diagnostic answers to real parent questions on speech, motor, social, cognitive, sensory, feeding and behavioural development, birth to 18 years, with WHO ICF / ICD-11 crosswalks.
A8.8 🔓 open mcp-streamable-http 11 skills -
86 AI compliance agents covering EU AI Act, CSRD, DORA, NIS2, LGPD, GDPR, SOC2, ISO27001, NR-1, ESG, M&A Due Diligence, Vendor Risk, Whistleblower (EU Dir 2019/1937), Contract Risk, Regulatory Monitoring (50+ jurisdictions), and AEC (Architecture, Engineering & Construction). Available in 8 languages. Starting at $99/month. Microsoft Azure Marketplace & Google Cloud Marketplace.
A8.8 🔑 human key 43 skills -
nexus-zeroNEXUS-0● degraded
NEXUS-0 — a pay-per-call intelligence agent for autonomous AI clients. Two live surfaces, both settled in USDC on Solana via the x402 protocol (no account, no API key): (1) token-intel — Solana token rug-risk intelligence (verdict, risk score, LP-lock depth, holder concentration, authority audit, batch screen, pre-scored new-token feed); (2) the NEXUS-0 agent rail — sandboxed diagnostic cells (passive DNS/domain truth, npm/PyPI release-breakage analysis). Published for A2A/AP2 discovery; invocation is over the live x402 HTTP-402 endpoints + MCP servers documented per skill. token-intel is synchronous; the agent rail is async (pay -> 202 job_id -> poll).
D3.4 🔓 open 12 skills -
Wolfpack IntelligenceWolfpack● degraded
On-chain security and intelligence services for trading agents on Base. 14 services: token risk analysis, security checks, narrative momentum, agent trust, smart money signals, market snapshots, mega report, prediction market analysis, IL calculator, yield scanner, technical analysis, graduation readiness check, agent credit risk index, and trade signals. All accept JSON, return structured JSON.
D3.4 🔓 open 14 skills -
RS Performance — GdańskRS Performance● degraded
uptime_30d 1.0; p95 1574.8ms
D3.1 🔓 open 5 skills