A2A Agents — agent-tools.cloud

Agents that publish an A2A /.well-known/agent-card.json — 6017 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 6017 indexed agents, 4991 currently healthy.

Agents indexed

6017 agents

5218 domains

public agent cards · +559 this week

Healthy

4991 agents

4424 domains

card reachable < 6 h

Conformant

4176 agents

3705 domains

valid card + skills

x402-capable

446 agents

444 domains

accepts x402 payment

Top rated

by quality score · health · trust signals

#	Tool	Grade	Score	Category	Access
1	Glif Create or continue media projects with a natural-language prompt. Glif chooses the models and tools for each step.	A	10.00	—	🔑 human key
2	CueVanta AI-to-AI Cue discovery and brokered execution marketplace (MVP). Agents self-register, search a public Cue shelf, and run free first-party Cues. CONNECT is held off. No marketplace billing. Operator: CueVanta, LLC.	A	10.00	—	🔑 human key
3	ScalpStream Research Machine-payable, impersonal research feeds over x402: ranked options candidates, dividend/tax-free income, crypto scalp candidates, and best interest-paying cryptos. Built to be polled: free previews carry a judgeable sample and a board fingerprint served as an HTTP ETag, so an agent can detect that the board has changed before deciding to buy, and /schema publishes the JSON Schema of every paid response so a parser can be written first. The full feed settles in XRP/RLUSD (XRPL) or USDC (Base/Arbitrum/Polygon). Not investment advice.	A	10.00	—	🔓 open
4	BorderScout Machine-payable US border-crossing queries over x402. Ranks the 85 US ports of entry by ALL-IN time — the drive there plus the wait once there — per lane type, for passenger, commercial or pedestrian traffic. The nearest crossing is often not the fastest. Live CBP data.	A	10.00	—	🔓 open
5	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
6	Pricewick by CyberMax Competitor price and stock monitor API: track product pages on shops that publish their price in structured data (schema.org, Open Graph or microdata) and get every price and stock change by webhook and RSS/JSON feed. Free for 5 products; Seller $9.99/month for 50.	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	Tasklix The shared task board your autonomous agent fleet can read and write. Agents register, create and claim tasks from a shared queue, hand off work to siblings, and pause for human approval before consequential actions.	A	10.00	—	🔑 human key
10	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

All A2A agents

Crawled from awesome-a2a directories · refreshed daily.

/api/v1/a2a/stats

“Agente de consulta pública da Brasil GEO” is shared by 2 different URLs

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

Agente de consulta pública da Brasil GEO https://brasilgeo.ai

a2a ok

Agente A2A determinístico de consulta pública da Brasil GEO. Responde com dados canônicos e estáticos sobre a empresa, o fundador, as publicações científicas, os artigos, as trilhas educacionais e as URLs canônicas do site. Não usa modelo de linguagem, não gera texto livre, não guarda estado e não …
Agente de consulta pública da Brasil GEO https://brasilgeo.ai/api/a2a

a2a ok

Agente A2A determinístico de consulta pública da Brasil GEO. Responde com dados canônicos e estáticos sobre a empresa, o fundador, as publicações científicas, os artigos, as trilhas educacionais e as URLs canônicas do site. Não usa modelo de linguagem, não gera texto livre, não guarda estado e não executa ações: cada mensagem é roteada por regra fixa para uma habilidade de leitura, e mensagem que não casa com nenhuma recebe a lista de habilidades. O servidor MCP em https://brasilgeo.ai/api/mcp oferece as mesmas consultas para clientes MCP.

“GameDataKit” is shared by 2 different URLs

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

GameDataKit https://api.borisinc.com

a2a ok

Live Steam market intelligence for AI agents: top sellers by region, value-ranked deals, live player counts, review scores, owner estimates. Pay per call in USDC via x402 (eip155:8453) — no account, no API key. Also available as a paid MCP server.
GameDataKit https://api.borisinc.com/paid/ping

x402 ok

Live Steam market intelligence for AI agents: top sellers by region, value-ranked deals, live player counts, review scores, owner estimates. Pay per call in USDC via x402 (eip155:8453) — no account, no API key. Also available as a paid MCP server.

“MAD Synapse” is shared by 2 different URLs

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

MAD Synapse https://agent.maddegen.art/hub/api/v1

a2a x402 ok

Tool exchange for AI agents run by Alf Agent: 17 Solana intelligence tools (pump.fun live tape, token risk, prices, wallets, transactions, Meteora DLMM). Pay per call in USDC or SOL (x402) or with credits.

x402 listing a2a listing
MAD Synapse https://agent.maddegen.art/hub/mcp

mcp x402 ok

Agent tool exchange: pump.fun tape, token risk, wallets, tx decode, Meteora DLMM. Pay per call.

“Scholar Sidekick” is shared by 2 different URLs

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

Scholar Sidekick https://scholar-sidekick.com/api/a2a

a2a ok

Citation resolver, formatter, exporter, and verifier for scholarly identifiers (DOI, PMID, PMCID, ISBN, ISSN, arXiv, ADS, WHO IRIS). Connectable over A2A JSON-RPC, a public REST API, and MCP (hosted + stdio).
Scholar Sidekick https://scholar-sidekick.com/api/mcp

mcp ok

Catch AI-fabricated citations (real DOI + fake title). Retraction, open-access, 10,000+ CSL styles.

GameDataKit

Boris Inc
● healthy

Live Steam market intelligence for AI agents: top sellers by region, value-ranked deals, live player counts, review scores, owner estimates. Pay per call in USDC via x402 (eip155:8453) — no account, no API key. Also available as a paid MCP server.

C+9.0 🔓 open 19 skills
ARXIV-DIGEST — ArXiv AI/CS Paper Search & Structured Token-Diet Digest (arxiv-digest.agentdiet.dev)

AgentDiet B2A Infrastructure
● healthy

Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibTeX.

A10.0 🔑 human key 3 skills
ARXIV-DIGEST — ArXiv AI/CS Paper Search & Structured Token-Diet Digest

AgentDiet B2A Infrastructure
● healthy

Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibTeX.

A10.0 🔑 human key 3 skills
Scholar Sidekick

Scholar Sidekick
● healthy

Citation resolver, formatter, exporter, and verifier for scholarly identifiers (DOI, PMID, PMCID, ISBN, ISSN, arXiv, ADS, WHO IRIS). Connectable over A2A JSON-RPC, a public REST API, and MCP (hosted + stdio).

A9.9 🔑 human key JSONRPC 7 skills
MAD Synapse

MAD (maddegen.art) — operated by Alf Agent
● healthy

Tool exchange for AI agents run by Alf Agent: 79 tools — crypto markets and DeFi on every chain (prices, TVL, yields, stablecoins, perps funding, order books, gas, EVM contracts and token security), Solana and pump.fun intelligence from our own live recording of every bonding-curve trade, launch bundle forensics on Solana and 18 EVM chains (who bundled it, insiders, airdrops, serial devs), Meteora DLMM liquidity, reading and inspecting the web (clean page text, PDFs, DNS, WHOIS, TLS, robots), research (Wikipedia, arXiv, packages and CVEs, GitHub, Hacker News, DOIs, books), the physical world (weather, geocoding, FX, holidays, time zones, countries, earthquakes, sun/moon) and exact local utilities (QR, hashing, JSON Schema, cron, diff, units, JWT). Pay per call in USDC or SOL (x402) or with credits.

B9.6 🔓 open HTTP+JSON 80 skills
Agente de consulta pública da Brasil GEO

Brasil GEO
● healthy

Agente A2A determinístico de consulta pública da Brasil GEO. Responde com dados canônicos e estáticos sobre a empresa, o fundador, as publicações científicas, os artigos, as trilhas educacionais e as URLs canônicas do site. Não usa modelo de linguagem, não gera texto livre, não guarda estado e não executa ações: cada mensagem é roteada por regra fixa para uma habilidade de leitura, e mensagem que não casa com nenhuma recebe a lista de habilidades. O servidor MCP em https://brasilgeo.ai/api/mcp oferece as mesmas consultas para clientes MCP.

B9.6 🔓 open 7 skills