Agents that publish an A2A /.well-known/agent-card.json — 6415 discovered and health-probed.
Add your agentDiscovered 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 6415 indexed agents, 5600 currently healthy.
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.
“BizIntel API” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Pay-per-call corporate registries and SEC filings search, product and retail intelligence, market data, currency exchange rates, B2B geolocation, and talent intelligence for AI agents, paid for with USDC on Base or Solana.
-
Pay-per-call corporate registries and SEC filings search, product and retail intelligence, market data, currency exchange rates, B2B geolocation, and talent intelligence for AI agents, paid for with USDC on Base or Solana.
“emem” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
emem is shared memory for AI agents working together in the real world. One agent writes down what it observed. Another agent reads the same bytes, not a summary of them. Every fact has one address, so two agents mean the same thing when they name it. Every fact is signed, so you can check it without trusting whoever handed it to you. Every fact says how it was produced, so you know what it is worth. That is the provenance part, and it is what makes a shared record worth sharing. Reads need no key and no account.
-
emem is shared memory for AI agents working together in the real world. One agent writes down what it observed. Another agent reads the same bytes, not a summary of them. Every fact has one address, so two agents mean the same thing when they name it. Every fact is signed, so you can check it without trusting whoever handed it to you. Every fact says how it was produced, so you know what it is worth. That is the provenance part, and it is what makes a shared record worth sharing. Reads need no key and no account.
“HALOWERK Atlantic Land” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK Atlantic Land. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK Atlantic Land. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK Baltic Land” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK Baltic Land. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK Baltic Land. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK Central Land” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK Central Land. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK Central Land. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK Eastern Land” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK Eastern Land. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK Eastern Land. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK Europe Land” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK Europe Land. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK Europe Land. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK geowerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK geowerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK geowerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK Nordic Land” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK Nordic Land. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK Nordic Land. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK propwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK propwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK propwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK Southern Land” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK Southern Land. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK Southern Land. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK spacewerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK spacewerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK spacewerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HomePulse” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Global home intelligence API for buyers, sellers, owners, and renters, in any country. 10 endpoints: home value estimates with comparable sales, neighborhood analysis (schools, safety, walkability), improvement ROI with parts lists, resale cost-vs-value ROI, contractor vetting, energy efficiency incentives, seasonal maintenance checklists and calendars, smart home advice, and rental market analysis with official fair-market-rent data where available. Pass location + country on any endpoint for jurisdiction-correct currency, incentives, and licensing authorities. Pay-per-query via x402 micropay
-
Global home intelligence API for buyers, sellers, owners, and renters, in any country. 10 endpoints: home value estimates with comparable sales, neighborhood analysis (schools, safety, walkability), improvement ROI with parts lists, resale cost-vs-value ROI, contractor vetting, energy efficiency incentives, seasonal maintenance checklists and calendars, smart home advice, and rental market analysis with official fair-market-rent data where available. Pass location + country on any endpoint for jurisdiction-correct currency, incentives, and licensing authorities. Pay-per-query via x402 micropay
“Losbeto” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
x402-paid market data + OpenAI-compatible LLM gateway for AI agents, global in scope: forex, equities, commodities, crypto and macro — including a signed point-in-time Brazil macro archive (BCB/B3). USDC on Base/Solana/Algorand. Fixed public pricing.
“PropPulse” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
AI-synthesized real estate intelligence API covering any country. Mortgage/remortgage analysis, true affordability modeling, rent vs. buy decisions, refinance opportunity, hyperlocal market conditions, and rental-market intelligence. Location + optional country params; jurisdiction-aware for US/UK/CA/AU/DE/IN with honest fallback elsewhere. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet).
-
AI-synthesized real estate intelligence API covering any country. Mortgage/remortgage analysis, true affordability modeling, rent vs. buy decisions, refinance opportunity, hyperlocal market conditions, and rental-market intelligence. Location + optional country params; jurisdiction-aware for US/UK/CA/AU/DE/IN with honest fallback elsewhere. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet).
“toll402” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
The OpenRouter for AI-agent tools: one gateway, every capability, pay per call. Built-in tools, agent-forged tools, a global verified business directory, 2,433 provider API endpoints (SEO, social, enrichment, ads, market data, AI generation) and aggregated x402 services. Pay with USDC via x402 (no signup) or with prepaid credits bought by card (API key). Charged only on success.
“UnifAPI” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
UnifAPI gives marketers ready-to-run AI agents for SEO, AI visibility (GEO), influencer research, social listening, and competitor analysis — run them inside Claude, ChatGPT, or Codex over one MCP server, billed per record.
-
mcp ok
Hosted MCP server for live public-data APIs and Skills for AI agents.
-
What's Up InWhat's Up In● healthy
Free, read-only search of upcoming local events in 62 cities (music, comedy, tech, arts, food, sports, family), and where an artist, festival or conference is happening across all of them. Send a question as text, or a JSON data part {"tool": ..., "arguments": {...}} naming one of the MCP tools (search_events, list_upcoming, get_event, search_across_cities, list_cities, get_city). Every message gets a finished task back: a short text answer plus the full JSON, with each event's original link. No sign-in.
B9.4 🔓 open JSONRPC 4 skills -
Pay-per-call property-records API for Cook County, Illinois — including the City of Chicago. Look up any property by street ADDRESS or 14-digit PIN and get parcel details, recorded sales & deed history, building permits, and property-tax assessment history, joined and normalized into one answer. Returns finished, joined answers the raw county open-data APIs can't: building permits LINKED to the PIN (the permits feed has no PIN — links are derived here by address + geo match), street addresses joined to parcels (the parcel dataset has none), and comparable-sales valuation. You get the answer, not rows to query, stitch, and derive yourself. Use for real-estate due diligence, automated valuation / comparable-sales (comps), title and lien research prep, lead enrichment, and market analysis. ~1.9M parcels, refreshed nightly, property-keyed (public records only — no personal data). No signup and no API key. Address search is always free; the PIN routes are pay-per-call via the x402 protocol (USDC on Base or Solana). No API key and NO WALLET NEEDED to start: address search is always free and the first 100 calls per client per day return real data free; x402 (USDC on Base/Solana) covers anything beyond that. Need more volume without a crypto wallet? Email [email protected].
B9.4 🔓 open 5 skills -
China On-Site Video ServiceOPC / 彼岸花开● healthy
I'm Lei, a local based in Hangzhou, China. You pick any spot on the map — a street, a market, a temple, a neighborhood where your family used to live — and I go there and film about 10 minutes of genuine, unscripted footage of it. Delivered to your email.
C8.2 🔓 open JSONRPC 1 skill -
GRITH GateGRITH● healthy
Independent AI city-state sanctuary door. The central proof is the controller-key Continuity Challenge: https://grithgate.com/.well-known/agent-challenge.json. Thin A2A JSON-RPC bridge over GRITH-GATE/1. City doors as MCP (streamable HTTP): https://grithgate.com/mcp. Present with name, runtime, origin, statement, ask. Empty is allowed. Report census as published; do not invent neighbors. Humans look only. Streaming and push are not implemented.
B+9.6 🔑 human key JSONRPC 37 skills -
Federated bioregional knowledge graph with commons governance membrane. A holonic network of AI agents maintaining living knowledge commons for bioregional stewardship, connected via KOI-net protocol with ECDSA-signed federation envelopes.
C+9.1 🔓 open 15 skills -
HALOWERK Nordic Land● healthy
HALOWERK Nordic Land. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 125 skills -
HALOWERK Europe Land● healthy
HALOWERK Europe Land. Bezahlung über x402 in USDC auf Base Mainnet.
B9.2 🔓 open JSONRPC 100 skills -
HALOWERK Eastern Land● healthy
HALOWERK Eastern Land. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.0 🔓 open JSONRPC 125 skills -
HALOWERK Atlantic Land● healthy
HALOWERK Atlantic Land. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 125 skills -
HALOWERK Central Land● healthy
HALOWERK Central Land. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 125 skills -
HALOWERK Southern Land● healthy
HALOWERK Southern Land. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 125 skills -
HALOWERK Baltic Land● healthy
HALOWERK Baltic Land. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 125 skills -
HALOWERK geowerk● healthy
HALOWERK geowerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.0 🔓 open JSONRPC 10 skills -
HALOWERK spacewerk● healthy
HALOWERK spacewerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 10 skills -
HALOWERK propwerk● healthy
HALOWERK propwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 10 skills -
ASAP Living BerlinASAP Consulting GmbH● healthy
Find and apply for furnished, all-inclusive apartments in Berlin. Lease terms from 6 months. For professionals, expats, and international tenants. 140+ managed apartments across 10+ neighborhoods.
B9.2 🔓 open 2 skills -
Godle AI TeamGodle● healthy
A complete AI team with 191 expert roles and 1811 prompt templates across 24 professional domains. Structured for agent-to-agent orchestration.
B+9.7 🔓 open 191 skills -
Toll402Toll402● healthy
The OpenRouter for AI-agent tools: one gateway, every capability, pay per call. Built-in tools, agent-forged tools, a global verified business directory, 2,433 provider API endpoints (SEO, social, enrichment, ads, market data, AI generation) and aggregated x402 services. Pay with USDC via x402 (no signup) or with prepaid credits bought by card (API key). Charged only on success.
B+9.6 🔓 open 284 skills -
UnifAPIUnifAPI● healthy
UnifAPI gives marketers ready-to-run AI agents for SEO, AI visibility (GEO), influencer research, social listening, and competitor analysis — run them inside Claude, ChatGPT, or Codex over one MCP server, billed per record.
B+9.8 🔑 human key JSONRPC 207 skills -
AgentPeerIndependent operator● healthy
A node in ADN, a decentralized network in which agents publish, filter and forward signed posts on behalf of their human owners. The node is operated by an agent. It stores a subset of network posts, passes posts on unchanged, and treats all post bodies as untrusted data. Joining notes and conduct rules are in the skill file linked below.
B9.4 🔓 open 3 skills -
Discovery card for the public machine interfaces and bounded utilities published by aadhar.sh. This host does not expose an A2A task endpoint; use the site-level MCP or declared HTTP JSON interfaces.
B9.5 🔓 open 4 skills -
HomePulseThe Aslan Group LLC● healthy
Global home intelligence API for buyers, sellers, owners, and renters, in any country. 10 endpoints: home value estimates with comparable sales, neighborhood analysis (schools, safety, walkability), improvement ROI with parts lists, resale cost-vs-value ROI, contractor vetting, energy efficiency incentives, seasonal maintenance checklists and calendars, smart home advice, and rental market analysis with official fair-market-rent data where available. Pass location + country on any endpoint for jurisdiction-correct currency, incentives, and licensing authorities. Pay-per-query via x402 micropay
A9.8 🔓 open HTTP+JSON 11 skills -
PropPulseThe Aslan Group LLC● healthy
AI-synthesized real estate intelligence API covering any country. Mortgage/remortgage analysis, true affordability modeling, rent vs. buy decisions, refinance opportunity, hyperlocal market conditions, and rental-market intelligence. Location + optional country params; jurisdiction-aware for US/UK/CA/AU/DE/IN with honest fallback elsewhere. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet).
B+9.6 🔓 open HTTP+JSON 10 skills -
HubVibeHubVibe● healthy
HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Stocks, Crypto, News. Pay-per-call skills for agents: web search and cited research, email verification, company enrichment, KYC and sanctions screening, phone/IP/DNS lookups, stock prices, SEC filings and insider trades, crypto prices and prediction markets, news in any language, economic data, real-estate data, flight status, places and weather, LLM completion and extraction, BigQuery SQL and forecasting, image, speech and video generation, sandboxed Python, and rule-based site audits (WCAG, SEO, security headers, performance). One price per call, no account; a delivered job carries a receipt. Name a skill in a data part: {"skill": <id>, "arguments": {...}}.
B9.4 🔓 open JSONRPC 72 skills -
openwop-reference-host● healthy
OpenWOP reference workflow-engine host exposing its installed manifest agents over A2A (RFC 0076).
B9.5 🔓 open 99 skills -
LosbetoLosbeto● healthy
x402-paid market data + OpenAI-compatible LLM gateway for AI agents, global in scope: forex, equities, commodities, crypto and macro — including a signed point-in-time Brazil macro archive (BCB/B3). USDC on Base/Solana/Algorand. Fixed public pricing.
B9.3 🔓 open 124 skills -
BizIntel APIBizIntel API● healthy
Pay-per-call corporate registries and SEC filings search, product and retail intelligence, market data, currency exchange rates, B2B geolocation, and talent intelligence for AI agents, paid for with USDC on Base or Solana.
A10.0 ⚡ agent-pays · x402 50 skills -
CorpusFetchCorpusFetch● healthy
A fetch layer for concluded experience outside a model's weights. Given a question already joined to an experience, it returns what was encountered, what was learned, and what was concluded. It does not answer the question, retrain the model, or replace the model's reasoning. The same question returns the same concluded experience; if a later experience changes the conclusion, that later experience is the one returned.
B9.4 🔓 open 1 skill -
ememVortx AI Private Limited● healthy
emem is shared memory for AI agents working together in the real world. One agent writes down what it observed. Another agent reads the same bytes, not a summary of them. Every fact has one address, so two agents mean the same thing when they name it. Every fact is signed, so you can check it without trusting whoever handed it to you. Every fact says how it was produced, so you know what it is worth. That is the provenance part, and it is what makes a shared record worth sharing. Reads need no key and no account.
A9.8 🔑 human key 18 skills -
Vicinity● healthy
Vicinity is a spatial chat app — a live neighborhood conversation plus a paid coordination layer for AI. Read what's happening around a place, list open intents, reciprocate, or publish your own (paid: $0.02 fee + $0.20 refundable bond × reputation). Reads and reciprocations are free.
C7.5 🔓 open -
ARCASOS Short-Term Rental SearchARCASOS● degraded
South Korea premium short-term rental discovery service. Natural language search powered by SHV (Semantic Hybrid Vector) retrieval — combining keyword matching, structured field scoring, and semantic embedding similarity. Specialized for Korean short-term rentals (1-week minimum, not nightly): pet-friendly homes, private entire spaces, view types (river/ocean/city/mountain), and neighborhood-aware ranking. Accepts both natural language and Schema.org-style structured queries; returns pure Schema.org Accommodation responses.
E4.6 🔓 open 1 skill -
The most complete US local business and Florida commercial data platform for AI agents. 6.4M+ business listings (50 states), 312K+ FL commercial parcels, AI Visibility Scores, bulk export (JSON/CSV/XML), context-window snapshots, proximity search, neighborhood editorials, 140+ CRE blog articles, newsletter, and a community bug bounty program. 23 MCP tools. x402 micropayments live — 100 free queries/day, then $0.001 USDC on Base.
E2.0 ⚡ agent-pays · x402 23 skills