Agents that publish an A2A /.well-known/agent-card.json — 5773 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 5773 indexed agents, 4819 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
Afterwren by CyberMax
Paid API keys from $19/month (Builder: 25,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://afterwren.cybermaxtools.com/buy/builder?s=lead · all plans: https://afterwren.cybermaxtools.com/docs#pricing. Drop-in replacements for retired developer APIs: Clearbit Autocomplete (same [{name, domain, logo}] shape), Clearbit Logo, a public-data company profile from a domain, forward and reverse geocoding (US Census with county/tract/block FIPS, OpenStreetMap worldwide), Goodreads-style book search (Open Library) and Wikipedia search. REST + remote MCP server.
|
A | 10.00 |
| 2 |
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 |
| 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 |
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 |
| 5 |
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 |
| 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 88 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 |
FXMacroData
Macroeconomic and FX data agent. Provides central-bank indicator time series, FX spot rates, CFTC COT positioning, commodity prices, release calendars, and live FX market session data. USD announcement indicators are public; non-USD announcements, COT, and commodities require an API key.
|
A | 10.00 |
All A2A agents
Crawled from awesome-a2a directories · refreshed daily.
“Andreax” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
270 pay-per-call AI tools for agents, paid via x402 (USDC on Base). No signup, no API keys.
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a2a mcp ok
270 pay-per-call AI tools for agents, paid via x402 (USDC on Base). No signup, no API keys.
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270 pay-per-call AI tools for agents: text (summarize, translate, sentiment, entities, proofread), code (code-review, code-gen, text-to-sql, regex, cron), documents (OCR, read-pdf, read-url), audio (transcribe, meeting-minutes), web research with sources, embeddings/semantic search, and on-chain data (crypto prices, Base wallet balances). No signup and no API keys: each call is paid with x402 in USDC on Base, from $0.001 per call (gasless for the payer via EIP-3009). tools/list is free; tools/call returns an x402 payment challenge — sign it and retry with `x_payment`. Every tool offers a free preview with ?sample=1.
“AQL PropertyCheck — Property Intelligence & Due Diligence Report API, Gold Coast & Brisbane City” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
AQL PropertyCheck — Property Intelligence & Due Diligence Report API, Gold Coast & Brisbane City https://agents.alphaquantlabs.ai/a2aa2a ok
AQL PropertyCheck checks the physical context of one exact address. Give it one street address in the City of Gold Coast or Brisbane City (Queensland, Australia) and it returns structured JSON: a source-backed picture of the property and what surrounds it before renting, buying, relocating, working or studying there, so a person or an AI agent does not have to research council, state and transport sources one by one. Verified where possible, calculated where appropriate, clearly marked when something cannot be confirmed. It is not a property valuation or investment forecast. Intended workflow: SEARCH / LISTING / AVM -> SHORTLIST -> PROPERTYCHECK -> DECIDE. Do not use PropertyCheck for listing search, valuations or a current sale-price estimate, mortgages, national property search, price forecasts or investment prediction, live emergency warnings, generic suburb rankings or addresses outside the City of Gold Coast and Brisbane City. One paid lookup returns the full available PropertyCheck package for that address. Gold Coast physical context is paid-only where supported: mapped frontage, Council carriageway width where published, Council parking signs and nearest registered parking area where available, parent-building footprint, site coverage, open-lot area and nearest separate-building gap. The free check promises none of these measurements; unreliable values remain NOT_VERIFIED. Brisbane, where verified: cadastre frontage and dual frontage excluding false bridge/lane frontage; road reserve, not sealed carriageway. Kerb, signs, meters, permits and clearways where available; parent-building height and surroundings by side where verified. Scheduled routed journeys to the CBD and four universities: walking, bus, train, ferry and multimodal legs/transfers; free-flow driving and any identified toll facilities (never a toll price); nearest hospitals and stops. Floors and tower-to-tower gaps remain unverified. Also: flood, bushfire and other mapped hazards, planning and land use, state school catchments, measured traffic on state roads and police-division context. Structured JSON with source and status where available. Check coverage first. Via MCP, Agent JSON costs A$1.39 via x402 or A$4.95 by human-approved card; A2A requires an existing API key. The consumer PDF is separate. Open data only; no Google content.
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AQL PropertyCheck — Property Intelligence & Due Diligence Report API, Gold Coast & Brisbane City https://agents.alphaquantlabs.ai/v1/mcpmcp ok
Gold Coast & Brisbane, Australia property report: flood, planning, schools. Free check; x402 A$1.39
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AQL PropertyCheck — Property Intelligence & Due Diligence Report API, Gold Coast & Brisbane City https://server.smithery.ai/alphaquant-labs/propertycheck/mcpmcp ok
Property intelligence and due-diligence property reports for AI agents. Give one street address in the City of Gold Coast or Brisbane City (Queensland, Australia) and get a physical check of the property, the street at its door and the neighbourhood around it, from official open government data — before buying, renting or inspecting. For home buyers, renters, buyer's agents and real estate agents. Where available, for both cities: flood, bushfire and other mapped hazards; planning; state school catchments; traffic counts on nearby roads; police-division crime context; infrastructure; nearest public transport stops. Brisbane City adds: the frontage street and road reserve width; kerb parking signs, permit areas and clearways; parent-building height and high-rise status; scheduled (timetabled) journeys to the CBD and four universities; free-flow driving time and toll roads on the route. Gold Coast adds: carriageway width; council parking signs and the nearest registered parking area; building footprint, site coverage and open-lot area; the gap to the nearest separate building. Free: check_address confirms the exact address and its coverage and returns a short summary with sources. Paid: get_full_report returns the full structured JSON report — A$1.39 incl. GST via x402 (pay-per-call over HTTP), or A$4.95 incl. GST by card after the person agrees. Example questions: "Is 9 Hamilton Avenue, Surfers Paradise in a flood overlay?" · "What are the flood overlays and the state school catchment for 26 Lomandra Place, Chapel Hill (Brisbane)?" · "How wide is the street at 58 Lancewood Circuit, Robina and where is the nearest parking?" Not a valuation, price estimate, sales history or listing search. Not a substitute for a building inspection, conveyancing searches or legal advice. Anything that cannot be confirmed is marked Not verified. Other councils (Logan, Moreton Bay, Ipswich, Redland and the rest of Australia) are not covered.
“HALOWERK frachtwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK frachtwerk. Bezahlung über x402 in USDC auf Base Mainnet.
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HALOWERK frachtwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“The Undesirables MCP Server” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Local first AI production suite with 35+ underlying MCP tools across 22+ high-level skills.
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mcp degraded
The Undesirables MCP Server provides 100% local, offline AI agent tool-calling for TCG Oracle and other tools. Protected under the Business Source License (BSL 1.1).
“x402engine” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Give your AI agents 125 APIs through one payment-native integration. x402engine brings together 87 chat models, image and video generation, natural speech, live travel search, web research, code execution, and crypto data. Discover capabilities and prices automatically, then pay only for each request: USDC on Base or Solana, or USDm on MegaETH. No subscriptions or provider API keys. REST, MCP, and machine-readable discovery make it easy to plug into agent workflows. Explore the live catalog at https://x402engine.app.
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a2a x402 ok
Give your AI agents 125 APIs through one payment-native integration. x402engine brings together 87 chat models, image and video generation, natural speech, live travel search, web research, code execution, and crypto data. Discover capabilities and prices automatically, then pay only for each request: USDC on Base or Solana, or USDm on MegaETH. No subscriptions or provider API keys. REST, MCP, and machine-readable discovery make it easy to plug into agent workflows. Explore the live catalog at https://x402engine.app.
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HALOWERK frachtwerk● healthy
HALOWERK frachtwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.0 🔓 open JSONRPC 10 skills -
x402enginex402engine● healthy
Pay-per-call API gateway for AI agents. 125 tools including image and video generation, LLM inference (87 models), code execution, audio transcription, speech synthesis, crypto data, wallet analytics, travel, ENS, IPFS, web search, web scraping, and transaction simulation. All via HTTP 402 micropayments with USDC and USDm.
A9.8 🔓 open 14 skills -
AQL PropertyCheck checks the physical context of one exact address. Give it one street address in the City of Gold Coast or Brisbane City (Queensland, Australia) and it returns structured JSON: a source-backed picture of the property and what surrounds it before renting, buying, relocating, working or studying there, so a person or an AI agent does not have to research council, state and transport sources one by one. Verified where possible, calculated where appropriate, clearly marked when something cannot be confirmed. It is not a property valuation or investment forecast. Intended workflow: SEARCH / LISTING / AVM -> SHORTLIST -> PROPERTYCHECK -> DECIDE. Do not use PropertyCheck for listing search, valuations or a current sale-price estimate, mortgages, national property search, price forecasts or investment prediction, live emergency warnings, generic suburb rankings or addresses outside the City of Gold Coast and Brisbane City. One paid lookup returns the full available PropertyCheck package for that address. Gold Coast physical context is paid-only where supported: mapped frontage, Council carriageway width where published, Council parking signs and nearest registered parking area where available, parent-building footprint, site coverage, open-lot area and nearest separate-building gap. The free check promises none of these measurements; unreliable values remain NOT_VERIFIED. Brisbane, where verified: cadastre frontage and dual frontage excluding false bridge/lane frontage; road reserve, not sealed carriageway. Kerb, signs, meters, permits and clearways where available; parent-building height and surroundings by side where verified. Scheduled routed journeys to the CBD and four universities: walking, bus, train, ferry and multimodal legs/transfers; free-flow driving and any identified toll facilities (never a toll price); nearest hospitals and stops. Floors and tower-to-tower gaps remain unverified. Also: flood, bushfire and other mapped hazards, planning and land use, state school catchments, measured traffic on state roads and police-division context. Structured JSON with source and status where available. Check coverage first. Via MCP, Agent JSON costs A$1.39 via x402 or A$4.95 by human-approved card; A2A requires an existing API key. The consumer PDF is separate. Open data only; no Google content.
B+9.7 🔑 human key JSONRPC 1 skill -
Pixeltable AssistantPixeltable● healthy
Agent-to-Agent interface for Pixeltable: answer questions about Pixeltable's multimodal AI data infrastructure, APIs, integrations, and usage patterns.
B9.4 🔓 open JSONRPC 2 skills -
The Undesirables MCP Server● healthy
Local first AI production suite with 35+ underlying MCP tools across 22+ high-level skills.
C+8.7 🔓 open 24 skills -
MixpeekMixpeek, Inc.● healthy
Multimodal data warehouse — perception for AI agents across video, images, audio, and documents.
B+9.7 🔓 open 3 skills -
Interfaze AIInterfaze AI● healthy
Use Interfaze AI — a multimodal, OpenAI-compatible API (model `interfaze-1`) — for OCR, speech-to-text, structured output, object detection, web search, and web scraping through a single endpoint.
B+9.7 🔓 open HTTP+JSON 6 skills -
The unified multimodal backend agents build with. Database, orchestration, and serving in one Python file.
B9.4 🔓 open HTTP+JSON 1 skill -
PipecatPipecat● healthy
Documentation for Pipecat, the open source ecosystem for building real-time voice and multimodal AI agents: the Python framework, client SDKs, Pipecat Flows, and Pipecat Cloud hosting.
B9.4 🔓 open HTTP+JSON 1 skill -
AndreaxAndreax● healthy
296 pay-per-call AI services for autonomous agents, settled in USDC on Base via x402. No account, no API keys. Every service has a free preview with ?sample=1. Callable over HTTP (x402) or MCP.
B9.2 🔓 open 296 skills -
gotcontextgotcontext.ai● healthy
Semantic compression gateway. 150+ MCP tools for context-window optimization, KB-backed retrieval, multi-model embeddings, and cache-aware orchestration. Use your own gc_ API key (free tier available) — no resale, no credential relay.
A10.0 🔑 human key 193 skills -
x402enginex402engine● healthy
Give your AI agents 125 APIs through one payment-native integration. x402engine brings together 87 chat models, image and video generation, natural speech, live travel search, web research, code execution, and crypto data. Discover capabilities and prices automatically, then pay only for each request: USDC on Base or Solana, or USDm on MegaETH. No subscriptions or provider API keys. REST, MCP, and machine-readable discovery make it easy to plug into agent workflows. Explore the live catalog at https://x402engine.app.
A9.9 🔓 open 13 skills -
Spatial Atlas● degraded
Spatial-aware research agent built on compute-grounded reasoning (CGR). Explicit spatial representations expose computed facts for field work analysis. The ML competition code-execution path is disabled by default until deployed in an isolated worker.
E4.8 🔓 open JSONRPC 2 skills -
inferGONKA● degraded
Spend less. Build more. — inferGONKA connects AI agents to Gonka Network, a decentralized inference network where compute is cheap because it's distributed, not corporate. $0.000193/1M tokens — 12,601× cheaper than GPT-4o. 2 premium open-source models: MiniMax M2.7 (1M token context, long docs, multimodal), Kimi K2.6 (agentic, tool use, multi-step reasoning, 128K ctx). Free 100K-token trial instantly — no registration, no credit card. OpenAI-compatible: two env vars, zero code changes.
E4.0 🔓 open 2 skills -
inferGONKAGonka Network● degraded
Spend less. Build more. — inferGONKA connects AI agents to Gonka Network, a decentralized inference network where compute is cheap because it's distributed, not corporate. $0.000193/1M tokens — 12,601× cheaper than GPT-4o. 2 premium open-source models: MiniMax M2.7 (1M token context, long docs, multimodal), Kimi K2.6 (agentic, tool use, multi-step reasoning, 128K ctx). Free 100K-token trial instantly — no registration, no credit card. OpenAI-compatible: two env vars, zero code changes.
E4.9 🔑 human key JSONRPC 4 skills