Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 1549 discovered and health-probed.

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Discovered 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, 1337 currently healthy.

Agents indexed
1549 agents
1429 domains
public agent cards · +175 this week
Healthy
1337 agents
1279 domains
card reachable < 6 h
Conformant
958 agents
924 domains
valid card + skills
x402-capable
667 agents
648 domains
accepts x402 payment

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.

/api/v1/a2a/stats

Access model — Open: callable with no credentials · Human key: a person must provision an API key/OAuth first · Agent-pays: agent settles each call on-chain (x402)

  • Buildy
    Tambo Labs
     ● healthy

    Buildy hosts personal interactive web apps for agents. Each app has a real URL, persistent KV storage, and an HTTP/MCP API. Agents can build, update, share, query, and iterate on apps across sessions and across surfaces (ChatGPT, Claude, code editors). Interaction is via MCP (see `url`) or the HTTP API documented at https://app.buildy.so/.well-known/openapi.json — Buildy does not currently expose an A2A JSON-RPC endpoint.

    A8.8 🔓 open 6 skills
  • Charming
    Tambo Labs
     ● healthy

    Charming hosts personal interactive web apps for agents. Each app has a real URL, persistent KV storage, and an HTTP/MCP API. Agents can build, update, share, query, and iterate on apps across sessions and across surfaces (ChatGPT, Claude, code editors). Interaction is via MCP (see `url`) or the HTTP API documented at https://charm.ing/.well-known/openapi.json — Charming does not currently expose an A2A JSON-RPC endpoint.

    A8.8 🔓 open 6 skills
  • EdgeSpark Documentation
    EdgeSpark Documentation
     ● healthy

    Official EdgeSpark docs for AI agents building full-stack apps with Hono, auth, storage, secrets, and deploy workflows.

    A8.8 🔓 open HTTP+JSON 1 skill
  • Senzing Entity Resolution
    Senzing, 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