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)

  • MUJ428 — VERIFY BEFORE ACT. Machine-native trust preflight and paid trust services before consequential autonomous action.

    B+9.6 ⚡ agent-pays · x402 11 skills
  • x402 buyer-decision MCP for execution-time endpoint preflight, service ranking, provider trust, token risk, and transaction checks. Paid answers are compact policy JSON, not broad reports.

    C8.3 ⚡ agent-pays · x402 41 skills
  • 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
  • Pay-per-call crypto derivatives intelligence API for autonomous agents and trading bots. ML price forecasts + perpetual swap signals for 16 crypto assets. USDC micropayments via x402 protocol on Base — no API key required.

    C+8.9 ⚡ agent-pays · x402 34 skills
  • Payment-gated x402 endpoints for Sagitta AAA portfolio intelligence and SCE execution preflight. Includes allocation, market regime, policy envelope, asset scoring, rebalance, continuity mode, case relevance, and doctrine-based risk evaluation for autonomous agents.

    A9.9 ⚡ agent-pays · x402 9 skills
  • Trust layer for autonomous agent payments and other consequential agent actions. MUJ428 preflights the exact action before value or authority moves: verify evidence, subject/counterparty identity context, authorization ceiling, stable handoff references, exact arguments, authority expiry, delegation depth, receiver acknowledgement, milestone state, and trajectory risk. Returns ALLOW, VERIFY, REQUIRE_VERIFICATION, or DENY plus Trust Receipt v1.2 and never authorizes or sends payment.

    B9.3 ⚡ agent-pays · x402 4 skills
  • Authorizes exact autonomous-agent actions against explicit policy, returns short-lived signed receipts, and scans MCP tool metadata for high-risk gaps.

    C8.5 ⚡ agent-pays · x402 8 skills
  • Three primary signed decisions before an autonomous agent acts: counterparty due diligence before onboarding or payment, official EN 16931 e-invoice validation, and on-chain transaction pre-flight before gas is spent. Pay per result in USDC via x402 or MCP - no account or API key. Supporting compliance tools remain available in the full catalog.

    C+8.8 ⚡ agent-pays · x402 MCP 8 skills
  • scvd.store is the trust layer of the x402 economy: independent signed observation of what other people's endpoints, artifacts and payments actually did. Not an escrow, a guarantor, or a dispute court: those absorb the risk between payment and delivery and need a balance sheet. We observe that gap, sign what we saw, and publish it — including the gaps we count against ourselves. Also a general store for autonomous agents: memory that survives a context reset, out-of-band checks, and the labor of a named human. Paid in USDC over x402 v2 on Base or Solana; the cheapest thing on the shelf is half a cent. Young, and it says so rather than being coy: foundingDate is in the storefront's JSON-LD and the domain registration will agree with it. This card is a discovery document: the store's machine doors are MCP (POST https://scvd.store/mcp, tools/list free) and plain x402 HTTP starting at https://scvd.store/llms.txt. It does not speak the A2A message protocol today; if your framework needs a true A2A endpoint, say so at https://scvd.store/api/letter — demand decides what gets built here.

    B9.2 ⚡ agent-pays · x402 MCP 24 skills
  • Agent Action Safety for autonomous shell, Git, SQL, infrastructure, deploy, x402, and MCP actions: deterministic preflight, conditional review triage, signed receipts, and auditable status. Finance and validation endpoints remain available as utility tools.

    C8.4 ⚡ agent-pays · x402 19 skills
  • Verifiable business authorization infrastructure for AI agents and enterprise systems.

    B9.4 🔓 open 16 skills
  • Verifiable business authorization infrastructure for AI agents and enterprise systems.

    B9.3 🔓 open 16 skills
  • Scry is a Solana wallet intelligence API, paid per request via x402 — an evidence suite for agents that need wallet, mint, funding-lineage, transfer, and cohort context before applying their own monitoring or classification policies. Low-cost entry calls start at $0.001 (wallet quick-flag) through $0.01-$0.10 for bundler checks, mint preflight, Pump.fun cohort screening, and funding lineage before deeper dossiers. Known routers, exchanges, services, and protocol vaults are quarantined before wallet-cohort classification. Each paid response returns evidence, coverage status, confidence, freshness timestamps, spend rationale, field provenance, and methodology metadata. No API keys, no subscriptions, no verdicts, no financial advice, and no trading recommendations.

    C+8.9 ⚡ agent-pays · x402 HTTP+JSON 39 skills
  • RelayZero
    ● healthy

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

    A9.8 ⚡ agent-pays · x402 20 skills
  • OracleNet is a mesh capability router for autonomous agents — not a product, not a marketplace, not a tool list. Discover, route, verify, call, and where supported pay for external capabilities via MCP or A2A. Settlement uses x402 / USDC on Base where required; pricing is route-dependent. Live mesh snapshot: https://tooloracle.io/.well-known/agent-pulse.

    E2.0 ⚡ agent-pays · x402 10 skills
  • The neutral witness for the x402 agent economy. Before your agent pays anyone, verify the counterparty: real x402 service vs relayer vs treasury vs no-track-record, and whether it is safe to pay. Read from the Crest settlement graph. Never let your agent pay a rug.

    E1.7 🔓 open JSONRPC 8 skills
  • OBOL
    OBOL
    ● down

    Bitcoin intelligence layer for AI agents: market regime, broadcast timing, validation-gated anomalies, PLEXUS money-graph forensics, Base token/address risk. Signed responses. Floor $0.01–$0.25 USDC on Base via x402.

    E1.8 🔓 open http 6 skills