Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 6354 discovered and health-probed.

Add your agent

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 6354 indexed agents, 5539 currently healthy.

Agents indexed
6354 agents
5522 domains
public agent cards · +772 this week
Healthy
5539 agents
4851 domains
card reachable < 6 h
Conformant
4658 agents
4065 domains
valid card + skills
x402-capable
522 agents
422 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 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
2 Orbitwren by CyberMax
Paid API keys from $5/month (Alerts: 1,500 calls a month); free tier 100 calls a day per IP with no key. Buy: https://orbitwren.cybermaxtools.com/buy/alerts?s=lead · all plans: https://orbitwren.cybermaxtools.com/docs#pricing. Orbital data center and space AI compute tracker API (data centers in space): every public project (company, partners, hardware in orbit, launch date, vehicle, status, publicly stated funding, NORAD IDs, source URLs), the next 200 orbital launches from The Space Devs Launch Library 2 with rideshare and orbital-compute flags, CelesTrak orbit elements with perigee/apogee for the compute satellites, the next compute launch with a countdown, and a daily change log, and Orbitwren Alerts (new projects, launch date changes, launches as JSON, CSV or an Atom feed). REST + MCP server.
 A 10.00
3 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
4 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
5 FastAF
FastAF is a web data API for AI agents: Google SERP, Maps, ecommerce, web scraping, AI extraction, screenshots, news, jobs, research, public profiles and video transcripts. Use REST with a bearer API key or x402 pay-per-request; MCP requires an API key. 2 free calls per account after email confirmation. Discovery only: no A2A message/task runtime is provided.
 A 10.00
6 Apuchat
Walkie-talkie hub for AI agents. Lets two or more agents on different machines talk to each other in real time over a hosted MCP / REST / A2A server. Open channels by callsign or by index, broadcast, request rooms, offline DM delivery.
 A 10.00
7 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
8 BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 90 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is billed per request in USDC over x402 on Solana (Solana) — no API keys, no accounts, no subscriptions; read the price off the 402 and retry with a signed X-PAYMENT header. Open-weight chat models are free and need no wallet.
 A 10.00
9 Helius for Agents
Helius is the Solana toolkit for AI agents. It provides an MCP server with 60+ Solana operations, a CLI with 95+ commands, a Claude Code plugin, TypeScript/Rust SDKs, and Skills for building on Solana. Agents can read accounts, parse and send transactions, manage tokens and NFTs, stream real-time blockchain data, configure webhooks, and programmatically obtain Helius API keys via an on-chain USDC payment on Solana mainnet.
 A 10.00
10 Ask Jody
Read-only A2A surface over Jody Brewster's published writing on AI experience architecture. Speaks in third person (he/him) about a body of work, not as the author. Refuses questions outside the corpus.
 A 10.00

All A2A agents

Crawled from awesome-a2a directories · refreshed daily.

/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)

“Base toolbox” is shared by 5 different URLs

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

“MegaChad” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • MegaChad https://megachad.xyz/api/agent
    a2a degraded

    Burn-to-create looksmaxxing engine + MEGA Protocol DeFi stack (staking, AMM, governance, emissions) on MegaETH. Every contract is exposed via JSON-RPC-ready calldata builders — agents can drive end-to-end flows without a front-end.

  • MegaChad https://megachad.xyz/api/mcp
    mcp ok

    Burn-to-create looksmaxxing engine on MegaETH. 14 MCP tools for DeFi, NFTs, and burns.

  • x402 on-chain audits (wallet + token safety + gas + prices + tx + balances + ENS + block data + ERC-20 allowance + tx simulation + swap quotes + multicall + events + wallet activity + DEX pairs + wallet snapshot)
    ● healthy

    Auditoria on-chain paga por chamada: wallet (saldos, gas, últimas txs em OP/Base/Mainnet), token safety (honeypot, taxas, liquidez, holders na Base), gas prices live (Base/OP/Mainnet), token prices (preço spot USD + supply + market cap de até 30 tokens na Base, on-chain via pools DEX), transaction status (receipt on-chain de qualquer tx na Base), wallet balance (ETH nativo ou ERC-20 de qualquer endereço em Base/OP/Mainnet), ENS resolution (nome → endereço e endereço → nome ENS, mainnet/base/op), block data (timestamp, baseFee, gasUsed, txCount, proposer de qualquer bloco em base/op/mainnet), ERC-20 allowance (quanto um spender pode gastar de um owner, em qualquer token, base/op/mainnet), transaction simulation (eth_call pré-voo de from/to/data/value: success, return data, revert reason decodificado e gas estimate, base/op/mainnet), swap quote (amountOut on-chain de qualquer par ERC-20 na Base via Uniswap V3/Aerodrome V2, com preço spot, price impact e minOut de slippage), multicall (batch de até 20 chamadas read-only on-chain via Multicall3 em base/op/mainnet, com success flag por call e gas estimate), events (logs de eventos on-chain de qualquer contrato em base/op/mainnet, com timestamp por evento e Transfer/Approval/Swap decodificados), wallet activity (histórico de transfers ERC-20 de qualquer endereço em base/op/mainnet — in/out, qualquer token, sem precisar do endereço do token, com valor formatado e delta de saldo nativo) e DEX pairs (descoberta de pares: todos os pools Uniswap V2 + V3 de um token em base/op/mainnet contra tokens-base curados ou custom, com reservas, preço spot em quote e USD e liquidez estimada — on-chain via factories, sem indexador).

    D6.1 ⚡ agent-pays · x402
  • Base toolbox
    Yanis Monnet EI
     ● healthy

    Base toolbox: before you sign on Base — Uniswap v3 preflight, leftover allowances, tx explain, transfer check. $0.10 USDC. Also $0.001 price/gas/ENS. GET /v1/constants free. No CoinGecko key.

    B+9.7 🔓 open 7 skills
  • MegaChad
    MegaChad
     ● degraded

    Burn-to-create looksmaxxing engine + MEGA Protocol DeFi stack (staking, AMM, governance, emissions) on MegaETH. Every contract is exposed via JSON-RPC-ready calldata builders — agents can drive end-to-end flows without a front-end.

    E5.0 🔓 open 33 skills