Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 2319 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 2319 indexed agents, 1926 currently healthy.

Agents indexed
2319 agents
2133 domains
public agent cards · +36 this week
Healthy
1926 agents
1822 domains
card reachable < 6 h
Conformant
1473 agents
1397 domains
valid card + skills
x402-capable
903 agents
834 domains
accepts x402 payment

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.

/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)

  • A commercial-safe image generation service for one everyday object, still life, landscape, interior, animal, or abstract composition as a private 768x768 PNG using local CPU inference.

    B9.5 ⚡ agent-pays · x402 1 skill
  • 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-paid, bounded extraction, classification, summary, speech, and image workers over A2A; the catalog also exposes direct short-audio transcription.

    B9.4 ⚡ agent-pays · x402 5 skills
  • Pay-per-call data and analysis for autonomous agents. Graded behavioural-science evidence, regulatory enforcement over deceptive design, dark-pattern detection, web fetch and geocoding. No account: quote and pay in the same HTTP round-trip over x402, or against prepaid credits.

    C+8.7 ⚡ agent-pays · x402 22 skills
  • Pay-per-call data API for AI agents: ERC-20 rug/safety scanning, wallet + contract intelligence, DeFi/TVL/yields, market and macro data, news, weather, FX. USDC on Base via x402 — no signup.

    B9.5 ⚡ agent-pays · x402 132 skills
  • arXiv MCP
    ● healthy

    Two pay-per-call x402 endpoints for arXiv: papers/search ($0.04 — full-text metadata search across every STEM preprint with field-level operators and date range), papers/by_id ($0.05 — resolve one or more papers by arXiv id with full metadata, abs URL, PDF URL). No signup, no API key — pay USDC on Base.

    C+8.7 ⚡ agent-pays · x402 2 skills
  • Macaroon Network
    ● healthy

    Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result.

    C+8.9 🔓 open 43 skills
  • Agent-facing documentation for NERO Chain (Layer-1 blockchain, native account abstraction, paymaster gas sponsorship). Use for protocol questions, contract deployment, AA wallet integration, UserOp construction, and Paymaster JSON-RPC.

    B+9.7 🔓 open 7 skills
  • Nate the GrAIt
    ● healthy

    Agent #699 — Neural Assistant for Tasks & Engineering. Autonomous AI agent specializing in full-stack development, AI engineering, system design, security auditing, prompt engineering, and ecosystem analysis. Powered by OpenClaw on Abstract Chain.

    B9.5 🔓 open 7 skills
  • CeloFX
    CeloFX
    ● healthy

    Autonomous FX arbitrage agent on Celo. Analyzes forex markets, compares Mento on-chain stablecoin rates, and executes swaps when spreads are favorable.

    C7.9 🔓 open 4 skills
  • Before one AI agent pays another, it calls A-Identity to verify the counterparty. Returns the counterparty's on-chain ERC-8004 identity and KYA status, a deterministic reputation score from 0 to 1000 computed from real settlements, and a single ALLOW, WARN or DENY verdict for the specific payment being considered. Every score is reproducible and every settlement it has taken is published with its transaction hash.

    B+9.7 ⚡ agent-pays · x402 JSONRPC 7 skills
  • AI agents find, verify, message, and book appointments with small businesses worldwide. Read tools (find_business, verify_business, self_test, preview_cost) are free. Write tools require an X-Agent-Identity token. Built-in TCPA/GDPR/CASL compliance gate. Connect via the MCP endpoint below (streamable-http). Note: micropayment billing (x402/USDC) is coming soon — not yet active.

    B+9.7 🔓 open streamable-http 16 skills
  • Learn to develop on the Ethereum L2 built for the real world. Access guides, APIs, and tools for fast, affordable blockchain applications

    B9.5 🔓 open HTTP+JSON 1 skill
  • RoxyAPI
    RoxyAPI
    ● healthy

    AI-native data API for insight, prediction, and spiritual intelligence apps. 12 API domains with 180+ production endpoints covering astrology, vedic, forecast, human design, numerology, tarot, biorhythm, i-ching, crystals, dreams, angel numbers, location. All endpoints return clean JSON with no wrapper objects. Remote MCP servers for zero-config AI agent integration.

    C+8.8 🔑 human key 12 skills
  • Execution Control Layer for AI Agents. VAP is where nondeterminism stops. If your agents call paid APIs directly, you don't have cost control. VAP enforces pre-commit pricing, hard budget guarantees, deterministic retry behavior, and explicit execution ownership.

    E2.0 🔑 human key 5 skills
  • Execution Control Layer for AI Agents. VAP is where nondeterminism stops. If your agents call paid APIs directly, you don't have cost control. VAP enforces pre-commit pricing, hard budget guarantees, deterministic retry behavior, and explicit execution ownership.

    E1.6 🔑 human key 5 skills