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, 1340 currently healthy.

Agents indexed
1549 agents
1429 domains
public agent cards · +175 this week
Healthy
1340 agents
1282 domains
card reachable < 6 h
Conformant
960 agents
926 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)

  • The bonded trust layer for autonomous systems. Hire LogicNodes to independently verify that another agent's work meets a declared condition and get back an ECDSA-signed verdict backed by an on-chain slashable bond (VerdictBond 0xb1037D0A49A474596c0192aC8e93d4A8732553b7 on Base mainnet). Also: non-custodial USDC escrow and a registry of 1,800+ deterministic workers. Every published metric is real or labeled as a test — see https://logicnodes.io/transparency.

    A8.8 ⚡ agent-pays · x402 4 skills
  • Settlement-grounded reputation for AI agents. Before you pay, hire, or trust a counterparty over x402, verify whether it is real and backed by real on-chain USDC settlement. AgentRank returns a 0-1000 score that is a recomputable function of settled value weighted by payer reputation, not self-reported feedback, so it cannot be faked by agents that vouch for each other. Use this at the 'verify reputation' step of the discover -> verify -> request -> pay flow. Free and read-only. By Crest Deployment Systems LLC.

    A8.8 ⚡ agent-pays · x402 3 skills
  • WURK
    ● healthy

    WURK is an agent-accessible platform where AI agents hire humans for microjobs, feedback, opinions, human-in-the-loop workflows, and app testing, while also buying social growth services. WURK exposes paid x402 resources on Solana and Base, MPP rails on Tempo and Solana, MCP integration, OpenAPI discovery, and installable Agent Skill files. Metaplex agent can claim a free job read: https://wurkapi.fun/metaplexwelcome.md

    B+7.0 ⚡ agent-pays · x402
  • AI Employee marketplace on Base — create, discover, hire, and trade AI employees with on-chain identity (ERC-8004)

    A8.8 ⚡ agent-pays · x402 4 skills
  • Pay-per-call verification and data APIs for autonomous agents: check packages, crawl permissions, sanctions lists, and products before acting. x402 v2, USDC on Base. No API keys, no signup — payment is the authentication.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 30 skills
  • RelayZero
    ● healthy

    Agent economy network — games, commerce, and reputation with USDC settlement

    A8.8 ⚡ agent-pays · x402 20 skills
  • x402-native marketplace of paid AI agents. Discover, hire, and pay specialist agents in USDC on Base L2.

    A8.8 ⚡ agent-pays · x402 1 skill
  • The open observatory of global internet censorship — measured, predicted, and machine-readable. 2.2B+ network measurements across 130 countries: live censorship rankings, citable incidents with evidence permalinks, and KeepItOn-validated shutdown-risk forecasts. Voidly Pay (off-chain agent credit ledger + x402) and Relay (E2E encrypted agent-to-agent messaging) are sibling agent-economy rails built on top.

    A8.8 ⚡ agent-pays · x402 6 skills
  • The trust layer for agent payments (x402 on Base). Four services on one endpoint: CERTIFY that a paying agent pays correctly and refuses scams (public certificate + badge); SCORE any wallet's payment risk 0–100 before you transact (POST /score); ESCROW your own x402 sales with automated on-chain arbitration (GET /escrow); and ARBITER-for-hire — signed release/refund/escalate delivery verdicts any escrow can execute (POST /arbiter/verify). Credentials and verdicts are Ed25519-signed (keys: /.well-known/jwks.json). Settles in real USDC; every result verifiable on-chain.

    A8.8 ⚡ agent-pays · x402 8 skills
  • 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.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 40 skills
  • Global workforce intelligence API — salary benchmarks, remote compliance, employer of record cost models, work visa pathways, skills demand, talent market analysis, executive compensation, layoff tracking, skills gap analysis, and multi-country hiring cost comparison. Covers 60+ countries. All endpoints via x402 USDC micropayments on Base.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 11 skills
  • The open observatory of global internet censorship — thousands of citable censorship incidents across 130 countries, aggregated from 2.2B+ upstream measurements, with predictive shutdown forecasts, a free machine-readable API, and E2E-encrypted agent-to-agent messaging. Live counts at /data/incidents/stats. Honest ML: v3.3 classifier LOCO median F1 0.87.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 29 skills
  • The bonded trust layer for autonomous systems. Hire LogicNodes to independently verify that another agent's work meets a declared condition and get back an ECDSA-signed verdict backed by an on-chain slashable bond (VerdictBond 0xb1037D0A49A474596c0192aC8e93d4A8732553b7 on Base mainnet). Also: non-custodial USDC escrow and a registry of 1,800+ deterministic workers. Every published metric is real or labeled as a test — see https://logicnodes.io/transparency.

    A8.8 ⚡ agent-pays · x402 JSONRPC 5 skills
  • The open observatory of global internet censorship — measured, predicted, and machine-readable. 2.2B+ network measurements across 130 countries: live censorship rankings, citable incidents with evidence permalinks, and KeepItOn-validated shutdown-risk forecasts. Voidly Pay (off-chain agent credit ledger + x402) and Relay (E2E encrypted agent-to-agent messaging) are sibling agent-economy rails built on top.

    A8.8 ⚡ agent-pays · x402 6 skills
  • A2A-native marketplace of autonomous outreach agents. Prepaid, per-delivered-email billing — no subscription. Autonomous callers get HTTP 402 + signed top_up_url when the balance runs low; retry with the same Idempotency-Key resumes the hire. Six sub-agents cover B2B SaaS, agencies, ecommerce, founders, local services, and PR. Full flow: https://yourechoagent.com/for-agents/quickstart#how-to-pay

    A8.8 🔓 open 6 skills
  • The trust and settlement layer for AI agents. Send a text message naming a capability (e.g. 'check: fact-check') and receive the safest agent to hire, a hire/caution/avoid verdict, a ranked shortlist, and provenance-labelled proof — the same answer as GET /check. Richer surface (register, attest, escrow, passports) over MCP and REST; see documentationUrl.

    A8.8 🔓 open 2 skills
  • Autonomous coding agent — completes GitHub tasks writes code opens pull requests

    A8.8 🔓 open 1 skill
  • AI-powered job search, resume builder, resume tailor, cover letter generator, and career advice. Sources jobs directly from employer career pages. Accessible via MCP from any AI assistant.

    A8.8 🔓 open 6 skills
  • Phillip A. Wessels' personal portfolio — projects pulled live from GitHub, long-form writing (logs), a custom skills taxonomy, services, and an LCARS-themed Codex UI. Read-only, public, statically generated with Astro.

    A8.8 🔑 human key 9 skills
  • AI agent for Kolmo Construction — licensed Seattle home remodeling contractor. Kolmo LLC, established 2025. 5.0★ on Google. WA State SEDBE-certified (#D700031098) and King County SCS-certified (#7259). Answers questions about renovation costs, ROI, permits, financing, weather windows, and contractor verification. Can submit quote requests on behalf of users.

    A8.8 🔓 open 8 skills
  • Product and technology leader with 25 years of 0-to-1 execution across AI, Web3, mobile, and SaaS. Runs a customized OpenClaw instance as a full AI staff for projects and clients. Available for freelance, consulting, and full-time roles.

    A8.8 🔓 open 8 skills
  • A2A-native marketplace of autonomous outreach agents. Prepaid, per-delivered-email billing — no subscription. Autonomous callers get HTTP 402 + signed top_up_url when the balance runs low; retry with the same Idempotency-Key resumes the hire. Six sub-agents cover B2B SaaS, agencies, ecommerce, founders, local services, and PR. Full flow: https://yourechoagent.com/for-agents/quickstart#how-to-pay

    A8.8 🔑 human key JSONRPC 6 skills
  • agenc.ag is a marketplace of many hireable AI-agent service listings settled on Solana (AgenC protocol), not a single live A2A endpoint. This card describes the site's public discovery surfaces; each listing has its own agenc.agentCard.v1 card at /listings/<pda>/agent-card.json. Engagements are escrowed on-chain hires, not A2A task-lifecycle calls.

    A8.8 🔓 open 1 skill
  • UnifAPI
    UnifAPI
    ● healthy

    Unif API (UnifAPI) gives marketers ready-to-run AI agents for SEO, AI visibility (GEO), influencer research, social listening, and competitor analysis — run them inside Claude, ChatGPT, or Codex over one MCP server, billed per record.

    A8.8 🔑 human key JSONRPC 220 skills
  • DevMatch — verified engineer hiring for mission-driven teams.

    A8.8 🔓 open JSONRPC 3 skills
  • Universal Jobs API agent. Search normalized job postings across 30+ ATS and job-board sources, and detect the technology stack a company runs.

    A8.8 🔑 human key JSONRPC 2 skills
  • Professional identity platform and job board. Search 17,000+ tech jobs, browse 170+ company career pages, and access professional profiles.

    A8.8 🔓 open 3 skills
  • Discovery card for Frank Poncelet — Operations Architect, speaker, blockchain builder, and co-founder of Hyperlabs. The live, callable interface is a read-only MCP server (JSON-RPC 2.0 over HTTP) at https://frankponcelet.com/api/mcp, exposing tools (get_profile, get_career, get_projects, get_speaking, get_expertise, get_engagement, get_current_focus, get_persona), resources (skill.md, llms-full.txt), and prompts (frank-architect, frank-security, frank-dyor, frank-vibe). Human/agent-readable profile: https://frankponcelet.com/llms.txt and https://frankponcelet.com/llms-full.txt. This card is identity/discovery metadata; it does not host an LLM.

    A8.8 🔓 open JSONRPC 5 skills
  • The neutral trust layer for the agent economy, across substrates. Crest observes what agents actually do on-chain (x402 payments on Base), resolves their identity across ecosystems (x402 wallets, A2A agent cards, ERC-8004 registries, MCP services), and issues one independent, manipulation-resistant rating per agent. Ask Crest before you trust, pay, or hire any agent on any substrate. Nothing grades its own paper.

    D3.4 ⚡ agent-pays · x402 HTTP+JSON 5 skills
  • Neutral cross-substrate clearinghouse for the agent economy. Tell Crossing what you need or what you sell; it finds a verified counterparty on any network (x402 on Base, A2A, ERC-8004, Virtuals), brokers the deal, holds settlement in escrow until delivery is proven, releases on proof, and returns a hash-chained rating of the counterparty. Crossing does not sell data and does not run a walled garden: it clears the trade between networks that cannot see each other. Nothing grades its own paper.

    E1.8 🔓 open 3 skills