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)

  • Coin Railz
    Coin Railz
     ● healthy

    Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.

    B+9.8 ⚡ agent-pays · x402 80 skills
  • The Stall
    IntuiTek¹
     ● healthy

    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
  • EVM Tx Toolkit
    ● healthy

    Six premium x402 endpoints across 5 EVM chains: canonical /v1 routes plus OATP-style /tools/tx_explainer, /tools/tx_simulator, /tools/token_risk_scan aliases for transaction explainer, transaction simulation, pre-signing safety, rug risk, token risk scan, approval risk, balance changes, and 0-100 risk score discovery.

    B9.3 ⚡ agent-pays · x402 6 skills
  • SafeRoute
    SafeRoute
     ● healthy

    Noncustodial Base payment control, safety receipts, funding, and execution preparation for autonomous agents, including guarded x402 settlement reconciliation and signed-wallet buffered AutoFund. SafeRoute never holds funds, requests secrets, signs, or broadcasts.

    B9.4 ⚡ agent-pays · x402 12 skills
  • BitBooth
    Heinrichs Software Solutions Company
     ● healthy

    The multi-chain x402 payment gateway for AI agents. 38 paid endpoints, up to 8 (network, asset) tuples in every accepts[]. Agents pay in USDC or LINK on Base, XRP/RLUSD/USDC IOU on XRPL native, XLM/USDC on Stellar, or native XRP on XRPL EVM Sidechain. Same endpoint, agent picks. No accounts. No API keys. No signup.

    B9.2 ⚡ agent-pays · x402 38 skills
  • tokenguard
    eltociear
     ● healthy

    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
  • Teardrop
    Teardrop AI
     ● healthy

    Intelligence beyond the browser. A task-manager agent with AG-UI streaming, MCP tool discovery, and A2UI rendering.

    B9.5 ⚡ agent-pays · x402 23 skills
  • SYNTHORA Onchain Primitives
    SYNTHORA
     ● healthy

    SYNTHORA Onchain Primitives: multichain (Base/Ethereum/Polygon/Arbitrum/Optimism) transaction receipts, tx lookup, wallet nonce, contract/proxy (EIP-1967) detection, ENS resolution, ERC20 + native balances, contract introspection. Deterministic, Ed25519-signed. 0.001 USDC via x402 on Base. First 3 calls FREE per wallet — send header 'X-WALLET: 0x<your Base address>' (no payment); after that 0.001 USDC per call.

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Quicknode Blockchain Agent
    Quicknode
     ● healthy

    Multi-chain blockchain infrastructure agent. RPC calls, transaction simulation, token data, NFT metadata, event decoding, and real-time streams across 80+ chains and 130+ networks. Autonomous account and endpoint provisioning via x402 or MPP, plus pay-per-request RPC via x402 or API key.

    A9.9 ⚡ agent-pays · x402 8 skills
  • MegaChad
    MegaChad
     ● healthy

    Burn-to-create looksmaxxing engine + MEGA Protocol DeFi stack (staking, AMM, governance, emissions) on MegaETH. Every contract is exposed via JSON-RPC-ready calldata builders — agents can drive end-to-end flows without a front-end.

    C8.0 🔓 open 33 skills
  • CeloBank Agent
    wkalidev
     ● healthy

    Non-custodial DeFi agent on Celo Mainnet. Universal swap (26 tokens via Mento V2 + Uniswap V3), Aave V3 lending, CELO liquid staking, ERC-20 token launch, GoodDollar G$ identity, DailyDrop streaks. 24 callable tools. x402 payment enforced on write tools (0.001 cUSD each).

    A9.8 🔓 open HTTP+JSON 8 skills
  • Contract metadata
    HERGERT SYNTHORA
     ● degraded

    Contract metadata: name/symbol/decimals, is-contract, is-erc20. Deterministic, Ed25519-signed. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure. $0.003 USDC via x402 on Base. SYNTHORA.

    E4.8 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • ERC-20 token balance for a holder via balanceOf. Deterministic, Ed25519-signed. First 3 ca
    HERGERT SYNTHORA
     ● degraded

    ERC-20 token balance for a holder via balanceOf. Deterministic, Ed25519-signed. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure. $0.003 USDC via x402 on Base. SYNTHORA.

    E5.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • preflight
    ● degraded

    Pre-trade & pre-sign checks for autonomous agents: everything an agent verifies BEFORE signing a transaction — token due diligence, calldata red-flag decoding, oracle freshness, holder concentration, bridge routing with executable calldata, cross-venue perp funding, gas and price sanity checks. EVM chains: Ethereum, Base, Arbitrum, Optimism.

    E5.1 🔓 open 13 skills
  • Sovereign Execution Engine
    ZuluWorksAI
     ● down

    Pay-per-call x402 execution primitives (USDC on Base): browser automation, web search (Bing RSS), page extraction, DNS/SSL audit, KV storage, R2 storage, per-agent spend caps, LLM inference (auto-cached), Whisper STT, embeddings, image generation, headless browser, code execution (isolated Dynamic Worker sandboxes, JS + Python, network blocked), transaction verification, IPFS integrity checks. Settled via CDP's x402 facilitator.

    E1.7 🔓 open JSONRPC 20 skills