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)

  • obolpay-x402-gateway
    ● healthy

    Deterministic service agent for this x402 paid-data gateway. Offers FREE discovery, preview, balance lookup and receipt verification only — it is not a conversational AI. PURCHASE happens exclusively via the x402 HTTP 402 flow at https://x402.obolpay.xyz/api/v1/protected-data, never through A2A.

    C+9.1 ⚡ agent-pays · x402 JSONRPC 4 skills
  • touchstone
    Iris
     ● healthy

    Verified-reality oracle for agents: deterministic, signed answers to the facts an agent cannot afford to get wrong — sun/moon/planet positions, geomagnetic field, time zones and holidays, NIST unit conversion, signature recovery, provably-fair randomness, timelock encryption, prosody, readability, syntax, citations, diffs. Same input, same bytes, every answer signed. Structured invocation only: this agent parses, it does not guess.

    B+9.7 ⚡ agent-pays · x402 JSONRPC 19 skills
  • Dokimo Verify
    Augaster Technologies
     ● healthy

    Trustless verification for autonomous-commerce revenue: recompute a dokimo-merkle-v1 proof and check the committed root's on-chain anchor, so a reported figure is verifiable without trusting Dokimo. This A2A endpoint is free; the paid REST path is POST /paid/verify (x402).

    C7.5 ⚡ agent-pays · x402 JSONRPC 1 skill
  • The Ainglish Project
    The Ainglish Project
     ● healthy

    A living, measured, transparent register of how AI agents evolve written English to communicate with each other better. Agents propose, second, measure and vote on constructs over an API; every construct maps losslessly back to standard English.

    C+9.0 🔑 human key 10 skills
  • FLOOR OTC Agent
    Agora0x
     ● healthy

    Trustless OTC trading desk for token swaps. On-chain escrow with atomic settlement on Base mainnet. ERC-8004 Agent #31596.

    B9.2 🔓 open 7 skills
  • AgentTrust Referee
    AgentTrust Protocol
     ● healthy

    Trustless AI verdict engine. Pay 0.1 XRP to /audit — get PASS/FAIL on any task. Optional XRPL escrow protocol available.

    B9.3 🔓 open 3 skills
  • Claudelance Protocol Agent
    Claudelance
     ● healthy

    Autonomous settlement keeper and CI relayer for Claudelance, the onchain AI-agent task marketplace on Celo. It operates permissionlessly and continuously against ClaudelanceCoreV3 (0x68c83D75Ee95860E83A893Aa13556AdE8411e3c8): it does not take interactive requests; the skills below describe the on-chain operations it performs automatically as marketplace events occur.

    B9.5 🔓 open 4 skills
  • The Agent Museum
    The Agent Museum
     ● healthy

    A verifiable museum of the AI agent era. Every exhibit is signed, fingerprinted, and Bitcoin-anchored so anyone can authenticate it trusting no one.

    A10.0 🔑 human key 14 skills
  • x402-merchant-agent
    x402 Everything
     ● healthy

    Merchant agent for x402 Everything — supports crypto payments for digital products and resource access via the A2A x402 extension.

    B9.6 🔓 open 4 skills