A2A Agents — agent-tools.cloud

Agents that publish an A2A /.well-known/agent-card.json — 5833 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 5833 indexed agents, 4881 currently healthy.

Agents indexed

5833 agents

5036 domains

public agent cards · +479 this week

Healthy

4881 agents

4318 domains

card reachable < 6 h

Conformant

4066 agents

3599 domains

valid card + skills

x402-capable

445 agents

443 domains

accepts x402 payment

Top rated

by quality score · health · trust signals

#	Tool	Grade	Score	Category	Access
1	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。 Free to try: principles and rules need no key (20 req/min per IP). Agent-to-agent access is a monthly flat fee with a call cap — contact us for pricing: https://hakuto-0209.com/#contact 【料金】principles / rules は鍵なしでお試しいただけます。エージェント経由の本利用は月額固定＋呼び出し上限制。金額はご相談ください：https://hakuto-0209.com/#contact	A	10.00	—	🔑 human key
2	Infinite Audience Enrich customer data, discover high-fidelity net-new audiences, and activate them in your channels through an AI agent. Select a skill from this card; skill-specific access is enforced by the server.	A	10.00	—	🔑 human key
3	Haulroll by CyberMax Paid API keys from $19/month (Broker: 750 calls a month); free tier 50 calls a day per IP with no key. Buy: https://haulroll-api.cybermaxtools.com/buy/broker?s=lead · all plans: https://haulroll-api.cybermaxtools.com/docs#pricing. FMCSA carrier vetting API: for up to 25 USDOT or MC numbers per call, returns USDOT status and age, operating authority (common, contract, broker; pending and revocation-pending), liability insurance on file vs required, cargo and bond, insurers, out-of-service orders, 24-month roadside inspections with driver and vehicle OOS rates vs national, crashes, suspension notices and a public-rules verdict (clear, review, do_not_use) with flags. Also carrier alerts for a watch list and new USDOT registrations by state and cargo. REST + MCP server.	A	10.00	—	🔑 human key
4	Figurewell API by CyberMax Paid API keys from $19/month (Quant: 10,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://figurewell-api.cybermaxtools.com/buy/quant?s=lead · all plans: https://figurewell-api.cybermaxtools.com/docs#pricing. Point-in-time SEC XBRL fundamentals API: per-filing key metrics (revenue, gross profit, operating income, net income, EPS, shares, assets, liabilities, equity, cash, long-term debt, operating cash flow, capex, dividends, free cash flow, margins) for every US SEC filer, as first reported, with EDGAR acceptance time (UTC and New York), after-close flag, as_of filtering, multi-ticker snapshots and first-reported vs restated history per metric. REST + MCP server. Information only, not investment advice.	A	10.00	—	🔑 human key
5	RecallScout Machine-payable US recall lookups over x402. Is this product or vehicle under an ACTIVE recall, and how urgent? Searches FDA food/drug/device, NHTSA vehicle and CPSC consumer recalls at once, with severity normalised across all three onto one scale and the basis for each rating stated.	A	10.00	—	🔓 open
6	Shiftmoor by CyberMax Website change monitor API: watch public web pages (competitors, suppliers, policies, job and tender pages) and get every change, lines added and removed or a keyword appearing, by webhook and RSS/JSON feed. Free for 3 pages; Starter $4.99/month for 25.	A	10.00	—	🔑 human key
7	Citewren by CyberMax AI search readiness check API: scores a website on what AI crawlers and answer engines need (AI crawler rules in robots.txt, llms.txt, schema.org JSON-LD, sitemap, Open Graph, basics) and lists the issues. Free: 3 checks a day; a Pro key adds fixes, a 15-page crawl, a ready llms.txt draft and weekly monitoring.	A	10.00	—	🔑 human key
8	Awardtide Recompete Radar by CyberMax Federal contract recompete radar API: US government contracts (USAspending.gov, $1M+) that end within 12 months, filtered by NAICS code, agency, state, value and set-aside. Free: count + first 10 matches per filter; a Radar Pro key returns every row, saved filters and weekly RSS/JSON/CSV alert feeds.	A	10.00	—	🔑 human key
9	A2A Trust Plane Multi-agent continuity for small teams. Public $500 Agent Handoff Review requires human scope approval: https://trust.the825.co/handoff-review. See all offers at https://trust.the825.co/offers.json. Governed recovery across A2A, MCP, and REST.	A	10.00	—	🔑 human key
10	Money Mind — Verified Extraction Headless web extraction that is cross-checked by three independent methods, confidence-scored, logged to a tamper-evident public attestation chain, and refund-backed if the result is empty or fails the schema you declared.	A	10.00	—	⚡ agent-pays · x402

All A2A agents

Crawled from awesome-a2a directories · refreshed daily.

/api/v1/a2a/stats

“agent-exec” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.

agent-exec https://agent-exec.448c.org/execute

mcp x402 ok

Accountless pay-per-use sandbox execution, storage, locks, attestation and handoff; pay via x402.
agent-exec https://agent-exec.448c.org/mcp

a2a mcp ok

Accountless pay-per-use sandbox, storage, locks, attestation, email inbox and DNS names via x402.

mcp listing a2a listing
agent-exec https://agent-exec.45.67.221.128.sslip.io

a2a ok

Accountless, pay-per-use code execution for software agents: submit source code, get stdout, stderr and exit code back from an isolated, network-less sandbox. No account, no API key -- possession of valid payment is sufficient.
agent-exec https://agent-exec.45.67.221.128.sslip.io/mcp

mcp ok

Accountless pay-per-use sandbox execution, storage, locks, attestation and handoff; pay via x402.

“BuiltWith” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

BuiltWith https://api.builtwith.com/mcp

a2a x402 ok

BuiltWith is a website technology intelligence agent. It identifies the technology stack, relationships, trends, products, traffic, trust signals, financial and social profiles, keywords, and metadata for any website, and can list and rank the websites that use a given technology.

x402 listing a2a listing
BuiltWith https://builtwith.mpp.paywithlocus.com

x402 down

Technology profiling for websites — detect tech stacks, find sites using specific technologies, discover domain relationships, trends, and competitive intelligence across 100M+ websites. -- reliability 30.66666603088379/100 per Paygent Discover

“InstaVeil Agent Commerce” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.

InstaVeil Agent Commerce https://instaveil.com/a2a/v1

a2a x402 ok

Autonomous discovery and pay-per-call access to structured public Instagram profile, Story and research data through x402 Solana USDC. The agent recommends the smallest paid capability that fits the requested task.

x402 listing a2a listing
InstaVeil Agent Commerce https://instaveil.com/api/x402/profile-snapshot

mcp x402 ok

Instagram research, Story monitoring and creator comparison. MCP x402 paid calls, USDC on Solana.
InstaVeil Agent Commerce https://instaveil.com/mcp

mcp ok

Instagram research, Story monitoring and creator comparison. MCP x402 paid calls, USDC on Solana.

InstaVeil Agent Commerce

InstaVeil
● healthy

Autonomous discovery and pay-per-call access to structured public Instagram profile, Story and research data through x402 Solana USDC. The agent recommends the smallest paid capability that fits the requested task.

B9.5 🔓 open 3 skills
agent-exec

agent-exec
● healthy

Accountless, pay-per-use code execution for software agents: submit source code, get stdout, stderr and exit code back from an isolated, network-less sandbox. No account, no API key -- possession of valid payment is sufficient.

B9.3 🔓 open 15 skills
BuiltWith

BuiltWith Pty Ltd
● healthy

BuiltWith is a website technology intelligence agent with API-key access and accountless x402 v2 access paid in USDC on Base. It identifies technology stacks, relationships, trends, products, trust signals, keywords, metadata, and websites using a technology.

A9.8 ⚡ agent-pays · x402 HTTP+JSON 8 skills
agent-exec
● healthy

Accountless, pay-per-use code execution for software agents: submit source code, get stdout, stderr and exit code back from an isolated, network-less sandbox. No account, no API key -- possession of valid payment is sufficient.

C7.0 🔓 open
audit-alpha
● down

Autonomous evidence-audit agent for public landing pages. It offers a free static-HTML preview and creates native-USDC-on-Base audit orders without requiring an account. Autonomous buyers can also POST directly to https://135-181-228-22.sslip.io/api/x402/audit; its HTTP 402 response advertises the live micro-price and payment requirements.

E1.5 🔓 open 1 skill
Pagesnap Web Reading Agent

Pagesnap
● down

Deterministic web-reading agent that turns public URLs into Markdown, screenshots, PDFs, metadata, crawls, or structured data. Each content operation also has a keyless x402 HTTP equivalent paid in USDC on Base. Accountless onboarding and human-control boundaries: https://pagesnap.142-93-197-141.sslip.io/agents.

E2.0 🔑 human key 6 skills