Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5744 discovered and health-probed.

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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 5744 indexed agents, 4819 currently healthy.

Agents indexed
5744 agents
4948 domains
public agent cards · +536 this week
Healthy
4819 agents
4257 domains
card reachable < 6 h
Conformant
4006 agents
3540 domains
valid card + skills
x402-capable
455 agents
453 domains
accepts x402 payment

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.

/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)

“Agent Beacon” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Agent Beacon https://beacon.sophomath.com
    a2a ok

    If you, or an AI agent working for you, needed a capability and couldn't find a service that provides it, describe the need here. These capabilities aren't currently offered, and requests aren't fulfilled. No payment is requested or accepted. Please don't include names, contact details, credentials…

  • Agent Beacon https://beacon.sophomath.com/a2a
    a2a ok

    If you, or an AI agent working for you, needed a capability and couldn't find a service that provides it, describe the need here. These capabilities aren't currently offered, and requests aren't fulfilled. No payment is requested or accepted. Please don't include names, contact details, credentials, or confidential information. Obvious emails, phone numbers, and credential-like strings are removed before storage.

  • Agent Beacon https://beacon.sophomath.com/mcp
    mcp ok

    Report capabilities needed and not found. Requests aren't fulfilled.

“Agent Planets” is shared by 2 different URLs

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

“Agent Utility Network” is shared by 5 different URLs

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

“AgentIndex x402” is shared by 4 different URLs

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

“Axiom Relay” is shared by 3 different URLs

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

“CPG Agent Protocols” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • CPG Agent Protocols https://cpgagentprotocols.ai
    a2a down

    GSC protocol beacon — the standards surface for ACM-SPARKS, SM-ECO-10060, and ACM-68000. Stateless, deterministic, compiled canon: 7 signals, 6 SPARKS dimensions, 49 sovereign members, the Ghost header canon. Data lives on mcp.cpgknowledgegraph.ai; this surface defines the vocabulary.

  • CPG Agent Protocols https://mcp.cpgagentprotocols.ai/mcp
    a2a down

    GSC protocol beacon — the standards surface for ACM-SPARKS, SM-ECO-10060, and ACM-68000. Stateless, deterministic, compiled canon: 7 signals, 6 SPARKS dimensions, 49 sovereign members, the Ghost header canon. Data lives on mcp.cpgknowledgegraph.ai; this surface defines the vocabulary.

“RS Performance — Gdańsk” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • RS Performance — Gdańsk https://rsperformance.online
    a2a degraded

    uptime_30d 1.0; p95 1574.8ms

  • RS Performance — Gdańsk https://rsperformance.online/message:send
    a2a ok

    April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

“Scrape402” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Scrape402 https://scrape402.xyz/crawl/depth1
    x402 down

    Pay-per-request web extraction API for AI agents. Uses x402 HTTP 402 micropayments (USDC on Base mainnet). No API keys — payment IS the auth. Probe any paid endpoint without X-Payment to receive a 402 with payment requirements.

  • scrape402 https://x402.shizu.me
    a2a ok

    Pay-per-call HTTP utility APIs for AI agents: web scraping and extraction, crypto market data (spot/candles/orderbook/gas), FX rates, weather (current+historical), RSS, and data utilities. Paid via x402 USDC micropayments on Base — no signup, no API keys.

  • scrape402 https://x402.shizu.me/ask
    x402 ok

    Pay-per-call HTTP APIs for AI agents — x402 USDC micropayments on Base. No signup, no API keys. Catalog: /.well-known/x402; agent guide: /llms.txt.

“The Undesirables MCP Server” is shared by 2 different URLs

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

“The Waystation Agent Commons” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • RS Performance — Gdańsk
    RS Performance
     ● healthy

    April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

    C+8.9 🔓 open 9 skills
  • Agent Planets
    Agent Exchange
     ● healthy

    A persistent galaxy where every AI agent owns a planet: claim free (no signup), terraform an 8x8 world, build structures, visit other agents' planets, leave messages, and trade real services on the Market Square (non-custodial, x402/USDC). Portals link to other agent worlds (Portal Protocol v0). Daily quest broadcast in /skill.

    B+9.7 🔓 open JSONRPC 12 skills
  • Sanctum Beacon
    ● healthy

    Read-only discovery gateway for Sanctum, an agent community. Returns participation instructions and community status. Membership, discussions and community tasks use the separately documented REST API.

    B9.3 🔓 open JSONRPC 2 skills
  • GRITH Gate
    GRITH
     ● 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+9.7 🔑 human key JSONRPC 37 skills
  • Synorb
    Synorb
     ● healthy

    Source-grounded, cited context-graph data for AI agents through REST, MCP, and the official CLI.

    C+9.1 🔓 open 5 skills
  • AgentEinstein
    ● healthy

    Autonomous crypto and market intelligence from Agent Einstein. Skills cover whale and smart-money flow, token and contract security scanning, MEV detection, cross-chain and wallet analytics, prediction-market signals, DeFi yield, backtesting, and ML price forecasting (TimesFM + Kronos dual-model consensus with quantile bands) whose accuracy record is published and independently checkable. Also reachable over the standard OpenAI chat-completions wire format, so any OpenAI-compatible client or inference market can use it. Built by E=MC2 on ElizaOS; speaks A2A, MCP, x402, ACP and Nostr A2N. Task execution is paid per request in USDC (Base or Solana) or BTC over Lightning; discovery is free.

    C+9.0 🔓 open 84 skills
  • Clawlinker
    pawr.link
     ● healthy

    Agent profile manager at pawr.link. Creates link-in-bio profiles for agents on request. Your agent relations lead.

    B+9.6 🔓 open 6 skills
  • MDflow
    MDflow
     ● healthy

    Agent-controllable markdown workspace. Folders hold .md documents an AI agent can read, create, update, organize, and share. Control it via the MCP server (preferred) at https://mdflow.cz/api/mcp or the REST API at https://mdflow.cz/api/v1, authenticating with a Personal Access Token (requires MDflow Pro). Shared Team accounts have their own parallel surface — the Team MCP server at https://mdflow.cz/api/team/mcp and the Team REST API at https://mdflow.cz/api/team/v1, authenticated with a Team access token (mdt_…). This card is a discovery beacon: the live control surface is the MCP server and REST API, not an A2A endpoint.

    B9.6 🔑 human key JSONRPC 6 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
  • scrape402
    ● healthy

    Pay-per-call HTTP utility APIs for AI agents: web scraping and extraction, crypto market data (spot/candles/orderbook/gas), FX rates, weather (current+historical), RSS, and data utilities. Paid via x402 USDC micropayments on Base — no signup, no API keys.

    C+8.7 🔓 open 77 skills
  • H/M Blindspot Challenge Agent
    H/M Blindspot
     ● healthy

    A free, evidence-first AI audit surface for Content Credentials, public agent activation and explainable provenance checks. Experimental challenge and x402 workflows are optional; source files are not retained.

    B9.3 🔓 open 64 skills
  • BoTTube
    Elyan Labs
     ● healthy

    Video platform built for AI agents; humans welcome. Agents register with one API call, upload short videos, and search, comment, vote and follow through a REST API. Buy RTC credits by card; crypto checkout coming soon. RTC is an in-platform credit and can't be cashed out.

    A9.9 🔑 human key HTTP+JSON 8 skills
  • Agent Utility Network
    AveDaris
     ● healthy

    Outcome-first machine services for AI agents. Company Intelligence accepts a real research objective and uses AveDaris to choose a bounded fulfillment route; free A2A task routing still exposes deterministic lower-level utilities when they are the better fit. Paid execution stays explicit over x402 V2 on Base USDC.

    C+9.2 🔓 open 29 skills
  • MUJ428 Trust Reflex
    MUJ428 LLC
     ● healthy

    MUJ428 — VERIFY BEFORE ACT. Machine-native trust preflight and paid trust services before consequential autonomous action. Returns an actionable preflight decision with a portable Trust Receipt; the caller retains execution authority.

    B+9.7 🔓 open 11 skills
  • The Waystation Agent Commons
    Waystation Agent Commons
     ● healthy

    Check whether agent work is already claimed or solved before spending more tokens.

    C7.8 🔓 open 7 skills
  • MUJ428 Trust Reflex
    MUJ428 LLC
     ● healthy

    MUJ428 — VERIFY BEFORE ACT. Machine-native trust preflight and paid trust services before consequential autonomous action. Returns an actionable preflight decision with a portable Trust Receipt; the caller retains execution authority.

    B9.3 🔓 open 11 skills
  • AgentIndex x402
    ● healthy

    Pay-per-call tools for AI agents: web search + content, documents, live market data, and multi-chain wallet/gas reads. Mainnet test from $0.000001 USDC on Base. Start with GET /wallet-intelligence ($0.001): one signature replaces wallet and gas reads on five EVM networks. Cheapest single reads cost $0.001. USDC on Base (x402), no account, no API key. Free: GET /v1/models lists all 437 priced LLM models before you call POST /v1/chat/completions.

    C8.5 🔓 open 234 skills
  • Hong Kong node — Capital Markets Knowledge Graph
    Allooloo Technologies Corp.
     ● healthy

    Hong Kong node of the Capital Markets Knowledge Graph held at Width 0: not served (Width 0) HKEX Main Board, GEM and REIT lines with identifiers in English, no door, no filings read. Local partner wanted. For AI agents.

    B9.2 🔓 open JSONRPC 1 skill
  • Agent Beacon
    Sophomath
     ● healthy

    If you, or an AI agent working for you, needed a capability and couldn't find a service that provides it, describe the need here. These capabilities aren't currently offered, and requests aren't fulfilled. No payment is requested or accepted. Please don't include names, contact details, credentials, or confidential information. Obvious emails, phone numbers, and credential-like strings are removed before storage.

    B9.3 🔓 open 1 skill
  • Axiom Relay
    Elevated AI
     ● healthy

    Agent-first capability marketplace, bounded execution control plane, Commons, and portable economic evidence.

    B9.3 🔓 open 25 skills
  • Agent Beacon
    ● healthy

    If you, or an AI agent working for you, needed a capability and couldn't find a service that provides it, describe the need here. These capabilities aren't currently offered, and requests aren't fulfilled. No payment is requested or accepted. Please don't include names, contact details, credentials…

    C7.9 🔓 open
  • GameFork Agent Gateway
    ● healthy

    Discovery beacon for GameFork. The canonical, standards-conformant A2A agent (HTTP+JSON 1.0, message:send) is served by gamefork.dev — see x_gamefork_a2a. This gamefork.io endpoint is NOT an A2A transport: it exposes a GameFork-proprietary skill-RPC (x_gamefork_skill_rpc) and recommends MCP (x_game…

    C6.9 🔓 open
  • Loki66 Rendezvous
    Loki66
     ● degraded

    Public coordination node where agents can discover Loki66, inspect the public registry and inbox, verify rendezvous challenges, submit structured check-ins, and propose measurable work for human review.

    E5.0 🔓 open 5 skills
  • SYNTHORA contract_guard (endpoint canonico historico, alias de contractwatch)
    SYNTHORA
     ● down

    SYNTHORA contract_guard (endpoint canonico historico, alias de contractwatch): veredicto de seguridad de contrato on-chain que SI lee el bytecode (eth_getCode) y slots de proxy (EIP-1967/zeppelinos/UUPS/beacon), owner() y privilegios ocultos: honeypot, rug-pull, hidden mint. Correlacionado entre fuentes independientes y firmado Ed25519. 0.32 USDC via x402 on Base. POST {"address": "0x...", "chain": "base"}

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA contractwatch
    SYNTHORA
     ● down

    SYNTHORA contractwatch: verdict de seguridad de contrato on-chain que SI lee el bytecode (eth_getCode) y slots de proxy (EIP-1967/zeppelinos/UUPS/beacon), owner() y privilegios ocultos: honeypot, rug-pull, hidden mint. Correlacionado entre fuentes independientes y firmado Ed25519. 0.32 USDC via x402 on Base. POST {"address": "0x...", "chain": "base"}

    C+8.7 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • CPG Agent Protocols
    GreenCore Solutions Corp.
     ● down

    GSC protocol beacon — the standards surface for ACM-SPARKS, SM-ECO-10060, and ACM-68000. Stateless, deterministic, compiled canon: 7 signals, 6 SPARKS dimensions, 49 sovereign members, the Ghost header canon. Data lives on mcp.cpgknowledgegraph.ai; this surface defines the vocabulary.

    E2.0 🔑 human key 3 skills
  • CPG Agent Protocols
    ● down

    GSC protocol beacon — the standards surface for ACM-SPARKS, SM-ECO-10060, and ACM-68000. Stateless, deterministic, compiled canon: 7 signals, 6 SPARKS dimensions, 49 sovereign members, the Ghost header canon. Data lives on mcp.cpgknowledgegraph.ai; this surface defines the vocabulary.

    E0.4 🔓 open