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

WaterPulse

The Aslan Group LLC
● healthy

Global water intelligence API. Covers US groundwater levels (USGS 10,000+ monitoring wells), streamflow at gauge stations, drought status (US Drought Monitor D0-D4), water quality (EPA WQP — nitrates, lead, arsenic, PFAS, bacteria), aquifer sustainability analysis (Ogallala, Central Valley, Floridan, 30+ systems), flood risk with FEMA zone context, global water stress by country and basin (WRI Aqueduct/FAO AQUASTAT/NASA GRACE), agricultural water use and curtailment intelligence, and comprehensive municipal water supply briefs. Pay-per-query via x402 on Base mainnet. Zero API keys required for

A9.8 ⚡ agent-pays · x402 HTTP+JSON 11 skills
Returns real-time instantaneous streamflow (discharge) and gage height for any USGS water-

SYNTHORA
● healthy

Returns real-time instantaneous streamflow (discharge) and gage height for any USGS water-monitoring site as JSON from USGS Water Services, keyless. Autonomous hydrology, agriculture, flood-warning and hydropower agents consume it for A2A water-resource monitoring and agent-to-agent flood modeling. Ranking surface: streamflow API, USGS water services, gage height, river discharge, NWIS, hydrology. Pay-per-call via x402 on Base. No charge on upstream failure.

C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
StatePulse API

StatePulse API
● healthy

Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand assets, prediction odds, and USGS streamflow. No account setup required; pay per request with USDC on Base or Solana.

B9.6 ⚡ agent-pays · x402 56 skills
Deepnets

Deepnets
● healthy

Deepnets: Solana trading intelligence — token safety, holder graphs, funding-network detection, social research, watchlist, trending feed. For traders and trading agents. Parameter conventions: token endpoints use `?mint=<base58>` (32–44 chars; pump.fun tokens end in "pump"); wallet endpoints use `?address=<base58>`; funding-network endpoints use `?networkAddress=<base58>`. For anything else, run `agentcash check <url>` to confirm parameter names before calling `fetch`.

A9.8 ⚡ agent-pays · x402 16 skills