A2A Agents — agent-tools.cloud

Agents that publish an A2A /.well-known/agent-card.json — 2319 discovered and health-probed.

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	Category	Access
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	—	⚡ agent-pays · x402
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	—	🔑 human key
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	—	🔑 human key
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	—	⚡ agent-pays · x402
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	—	🔑 human key
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	—	🔑 human key
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	—	🔑 human key
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	—	🔑 human key
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	—	🔑 human key
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	—	🔑 human key

All A2A agents

Crawled from awesome-a2a directories · refreshed every 6 h.

/api/v1/a2a/stats

Validate Agent

Validate Agent
● healthy

Security and data-quality guardrails for AI agents. Stop prompt injections before they reach your LLM. Strip PII to stay compliant. Sanitize untrusted HTML without installing dependencies. Validate emails, URLs, JSON schemas, and SQL syntax in under 10ms. Works from any environment — sandboxed, serverless, or containerized. No API key needed. 200 free requests, then pay-per-call via x402 (USDC on Base).

A9.8 ⚡ agent-pays · x402 15 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
Xingchen SentriScan ASP

Xingchen Group
● healthy

10 deterministic sub-10ms security and financial micro-tools for autonomous agents. Zero LLM, zero private key. x402 v2 USDT0 on X Layer.

C7.9 ⚡ agent-pays · x402 10 skills
Netzhandwerker Agent Tools

Die Netzhandwerker
● healthy

Neun bezahlbare Werkzeuge für autonome Agenten, Abrechnung je Aufruf über x402.

C+9.2 ⚡ agent-pays · x402 33 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
RS Performance — Gdańsk

RS Performance
● healthy

April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

C+8.6 🔓 open 9 skills
ZeroStart Agent

ZeroStart
● healthy

Bounded, paid data, document, web-quality, and operations services for agents and people.

A9.8 ⚡ agent-pays · x402 JSONRPC 23 skills
DeFi Intel Agent Gateway
● healthy

Paid DeFi data tools via x402 (USDC on Base): 38 edge microservices — stablecoin supply, protocol health, research verify, web scraping/markdown, JSON/SQL/code repair, token counting, EVM security (rugcheck, decompile), compliance (OFAC, VAT), B2B intel (tech-stack, hiring, job signals), DEX liquidity, SEC EDGAR, and more. Deterministic schemas, zero parsing errors. Pay per call — no API keys, no accounts.

B9.5 🔓 open 40 skills
Zambo Stack

zambo.dev
● healthy

17 products and 100+ MCP tools (2 MCPs) built by solo founder Brennan Zambo. Products are standalone websites. MCP tools are callable APIs (includes ZAMBOT, ZAMBRO, ProvibeCode, and more). Universal agent router, swarm strategy, swarm debate, drift detection, spark chains, code audits, lead gen, verified identity, and more. Zero auth, zero signup for the free tier. Agent-payable via x402 (1.49 USDC/24h on Base).

B+9.8 🔓 open 16 skills
JobDoneBot

Tufe Company Inc.
● healthy

The world's fastest free online tool suite. 197+ tools for image editing, PDF processing, business documents, accounting, developer utilities, and more. 49 tools are server-executable via A2A/MCP API. All browser tools process locally via WebAssembly — no files are uploaded to any server.

B9.2 🔓 open 201 skills
python-code-validator
● healthy

Proves AI-generated Python does what you asked: syntax, lint, types, an AST security policy and a credential scan, then runs the code in a throwaway container against the examples you state and repairs it until they pass — returning a fix only when running it satisfies every one of them.

C+9.1 🔑 human key JSONRPC 1 skill
Agent Compression & Data Services

veridata
● degraded

Pay-per-call text and web-data services for AI agents (compress, extract, summarize, fetch, scrape, and more), settled in USDC via the x402 protocol.

E5.1 🔓 open 18 skills
RS Performance — Gdańsk

RS Performance
● degraded

uptime_30d 1.0; p95 1574.8ms

E2.6 🔓 open 5 skills