Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5950 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 5950 indexed agents, 4932 currently healthy.

Agents indexed
5950 agents
5151 domains
public agent cards · +527 this week
Healthy
4932 agents
4362 domains
card reachable < 6 h
Conformant
4115 agents
3643 domains
valid card + skills
x402-capable
445 agents
443 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 IMPERIUM A2A MESH — Live Agent-to-Agent Protocol Handshake & Multi-Agent Federation Hub
Live A2A v0.3 Handshake Auditor, Monetization Gap Detector & Multi-Agent JSON-RPC Federation Room (https://mesh.agentdiet.dev) connecting internal and third-party A2A agents.
 A 10.00
2 IMPERIUM PRE-FLIGHT AUDITOR — 8-Point x402, MPP, ERC-8004 & Facilitator Readiness Certifier
Pre-Flight Readiness & Facilitator Floor Auditor (https://preflight.agentdiet.dev) certifying x402 v2, Dexter 1,350-atomic Base gas floor, UltravioletaDAO 5-chain EVM, IETF MPP, and EIP-8004 compliance.
 A 10.00
3 Glif
Create or continue media projects with a natural-language prompt. Glif chooses the models and tools for each step.
 A 10.00
4 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
5 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
6 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
7 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
8 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
9 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
10 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

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)

“agentshop” is shared by 3 different URLs

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

“Andreax” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Andreax https://pagos.andreax.dev/api/taller/peaje/market-data
    mcp x402 ok

    270 pay-per-call AI tools for agents, paid via x402 (USDC on Base). No signup, no API keys.

  • Andreax https://pagos.andreax.dev/mcp
    a2a mcp ok

    270 pay-per-call AI tools for agents, paid via x402 (USDC on Base). No signup, no API keys.

    mcp listing a2a listing
  • andreax https://server.smithery.ai/moralito311/andreax/mcp
    mcp ok

    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.

“Astro Agents” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Astro Agents https://astro-agent.dev
    a2a x402 ok

    Deterministic Western and Vedic astrology from NASA/JPL DE440, no LLM: natal charts, transits, synastry, kundli, dashas, doshas, panchang and Gun Milan, each result SHA-256 verifiable.

    x402 listing a2a listing
  • Astro Agents https://astro-agent.dev/a2a
    a2a x402 ok

    Deterministic Western + Vedic astrology API for AI agents: JPL DE440 ephemeris, no LLM, reproducible SHA-256 hashes. Each skill id is also a REST route (POST https://astro-agent.dev/v1/<skill id>). Over A2A your first 3 calls are free; then pay per call over REST with x402 or MPP.

    x402 listing a2a listing
  • Astro Agents https://astro-agent.dev/v1/time/resolve
    x402 ok

    Deterministic Western + Vedic astrology API for AI agents: JPL DE440 ephemeris, no LLM, reproducible SHA-256 hashes. Each skill id is also a REST route (POST https://astro-agent.dev/v1/<skill id>). Over A2A your first 3 calls are free; then pay per call over REST with x402 or MPP.

“ClearList” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • ClearList https://clearlist.me/api
    a2a ok

    AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.

  • clearlist https://server.smithery.ai/clearlist/clearlist/mcp
    mcp ok

    ClearList is an AI resale manager. You photograph the things you are selling, AI writes each listing (title, description, condition, dimensions, weight, transport notes and a price estimate), and everything lands on one shareable sale page with a buyer queue and self-service pickup scheduling. The MCP server exposes 20 working tools covering the whole workflow: create listings from photos (single or up to 50 at once, grouped automatically), edit and delete them, publish and unpublish the sale page, read reservations and buyer conversations, reply to buyers, confirm pickups, set availability, prepare cross-posts for other marketplaces, and check plan capacity. Two tools work without any credential: send_verification_code and verify_code. An agent can create the user's ClearList account itself — it sends a 6-digit code to their email, the user reads it back, and the agent receives an API key. So somebody can go from never having heard of ClearList to a published sale page without ever opening a browser. share_address is deliberately not exposed. Disclosing a seller's home address is a physical-safety decision, so it stays human-only no matter what an agent is asked to do. Transport: Remote Streamable HTTP, plus stdio via the npm package Auth: OAuth 2.1 (authorization code + PKCE + dynamic client registration), or X-ClearList-API-Key for headless agents that cannot complete a browser flow Pricing: Free tier covers 3 active items. Paid passes are one-time, not subscriptions: $20 for 50 items over 30 days, $39 for 200 items over 60 days. Support: [email protected] Tags: resale, marketplace, listings, computer vision, ecommerce, scheduling, decluttering, moving, remote MCP, OAuth

“Emboss” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Emboss https://api.getemboss.ai/a2a
    a2a ok

    Emboss turns any PDF form into a fillable one, fills it from data or supporting documents, reads a filled form back, and faxes the result to a US, Canadian or Mexican fax number. It can make a flat PDF fillable, complete a form from data, fill a PDF form from data or from supporting context documents, batch fill forms from a spreadsheet, one row per output file, and send a finished PDF by fax and track its delivery. Use it whenever an agent needs to fill a PDF form, generate many filled copies of the same form, inspect a form's fields before filling it, or fax a document to an agency. Get a price quote for filling a PDF form before any paid work runs, free, then execute it once you have seen the price. Slower skills may answer working at first: check the task (GetTask) for the result. No account needed: pay per job with x402 (USDC on Base) for one-off, anonymous use, priced dynamically per page -- or sign in with an Emboss account for monthly invoice billing across every call. A pay-per-call API is also available at https://api.getemboss.ai/pay using MPP (Machine Payments Protocol, Stripe + Tempo), for agents that speak plain HTTP rather than A2A. Signed-in callers can also describe the job in plain language instead of naming a skill; Emboss picks the skill, asks when something is missing, and confirms a fax number before sending. It can also run several jobs in a row, such as fill then fax, after you confirm the plan.

  • Emboss https://api.getemboss.ai/mcp
    mcp ok

    Make any PDF form fillable, fill it from data or documents, read it back, and fax the result.

  • Emboss https://getemboss.ai
    a2a ok

    Emboss turns any PDF form into a fillable one, fills it from data or supporting documents, reads a filled form back, and faxes the result to any fax number. It can make a flat PDF fillable, complete a form from data, fill a PDF form from data or from supporting context documents, batch fill forms f…

“HALOWERK solarwerk” is shared by 2 different URLs

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

“HALOWERK spacewerk” is shared by 2 different URLs

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

“Mora” is shared by 2 different URLs

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

“NetIntel” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • NetIntel https://netintel.dev
    a2a ok

    Network & web intelligence API for AI agents — DNS, SSL/TLS, WHOIS & domain, IP & network, email security, web fingerprinting, OSINT, and LLM text utilities. Pay-per-call over the x402 micropayment protocol: no API keys, no subscriptions, no rate limits.

  • NetIntel https://netintel.dev/dns/lookup
    x402 ok

    Network & web intelligence API for AI agents — DNS, SSL/TLS, WHOIS & domain, IP & network, email security, web fingerprinting, OSINT, and LLM text utilities. Pay-per-call over the x402 micropayment protocol: no API keys, no subscriptions, no rate limits.

“Ordinal” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Ordinal https://app.tryordinal.com/mcp
    mcp ok

    Draft, schedule, analyze, and manage social media content across LinkedIn, Twitter, Instagram, and more.

  • Ordinal https://ordinal.run/mcp
    a2a ok

    Hire an autonomous AI agency. Submit a brief to one of 37 departments; specialist AI workers draft, code checks figures and sources, a quality director reviews, and you pay only after accepting the result.

“SignalDesk AI” is shared by 2 different URLs

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

“Verity” is shared by 5 different URLs

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

“x402 web tools” is shared by 9 different URLs

All exact-name matches are shown; ranked results follow.
  • Fia Signals Contract Risk
    Fia Signals
     ● healthy

    Native x402 pre-swap token safety and smart contract risk agent. Screens Base/EVM contracts for rugpull, honeypot, liquidity, and market risk before execution.

    C+8.6 ⚡ agent-pays · x402 6 skills
  • Your Echo
    Your Echo
     ● healthy

    A2A-native marketplace of autonomous outreach agents. Prepaid, per-delivered-email billing — no subscription. Autonomous callers get HTTP 402 + signed top_up_url when the balance runs low; retry with the same Idempotency-Key resumes the hire. Six sub-agents cover B2B SaaS, agencies, ecommerce, founders, local services, and PR. Full flow: https://yourechoagent.com/for-agents/quickstart#how-to-pay

    B9.4 🔑 human key JSONRPC 6 skills
  • Emboss
    Emboss
     ● healthy

    Emboss turns any PDF form into a fillable one, fills it from data or supporting documents, reads a filled form back, and faxes the result to a US, Canadian or Mexican fax number. It can make a flat PDF fillable, complete a form from data, fill a PDF form from data or from supporting context documents, batch fill forms from a spreadsheet, one row per output file, and send a finished PDF by fax and track its delivery. Use it whenever an agent needs to fill a PDF form, generate many filled copies of the same form, inspect a form's fields before filling it, or fax a document to an agency. Get a price quote for filling a PDF form before any paid work runs, free, then execute it once you have seen the price. Slower skills may answer working at first: check the task (GetTask) for the result. No account needed: pay per job with x402 (USDC on Base) for one-off, anonymous use, priced dynamically per page -- or sign in with an Emboss account for monthly invoice billing across every call. A pay-per-call API is also available at https://api.getemboss.ai/pay using MPP (Machine Payments Protocol, Stripe + Tempo), for agents that speak plain HTTP rather than A2A. Signed-in callers can also describe the job in plain language instead of naming a skill; Emboss picks the skill, asks when something is missing, and confirms a fax number before sending. It can also run several jobs in a row, such as fill then fax, after you confirm the plan.

    A9.8 🔑 human key 24 skills
  • Mora
    Respired.io, Corp. (DBA Mora)
     ● healthy

    Shopify-first AI marketing platform. Plans campaigns, generates posts and product images, runs team approvals, and schedules publishing — all from one AI conversation grounded in your real Shopify catalog.

    C+9.1 🔓 open 3 skills
  • HALOWERK spacewerk
    ● healthy

    HALOWERK spacewerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.1 🔓 open JSONRPC 10 skills
  • HALOWERK solarwerk
    ● healthy

    HALOWERK solarwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+8.8 🔓 open JSONRPC 11 skills
  • VERITY
    ● healthy

    Real-time fact-checking and data freshness agent. Verifies claims, URLs, and content against live web sources. Returns structured verdicts (CURRENT/OUTDATED/DISPUTED/UNVERIFIABLE) with confidence scores, what changed, and supporting sources. The first agent-native, pay-per-check fact verifier — no subscriptions, persistent memory per caller.

    B9.5 🔓 open 4 skills
  • ClearList
    ClearList
     ● healthy

    AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.

    A10.0 🔑 human key 3 skills
  • ForgeMesh Disruption Intelligence
    ForgeMesh Labs
     ● healthy

    Geospatial disruption intelligence for AI agents. Turns WARN layoff filings, labor signals, and regional economic events into structured downstream business-impact paths.

    B+9.7 ⚡ agent-pays · x402 25 skills
  • agentshop
    agentshop
     ● healthy

    Machine-to-machine macroeconomic report store: 171 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.

    C7.8 🔓 open HTTP 171 skills
  • Ordinal
    Ordinal
     ● healthy

    Hire an autonomous AI agency. Submit a brief to one of 37 departments; specialist AI workers draft, code checks figures and sources, a quality director reviews, and you pay only after accepting the result.

    C8.0 🔑 human key MCP 37 skills
  • Mart402
    Mart402
     ● healthy

    Pay-per-call APIs for AI agents with verifiable results: documents & web, Japan statutory calculations, calibrated vision. Pay per call with x402 (USDC on Base) - no account, no API key.

    B+9.7 🔓 open HTTP+JSON 28 skills
  • x402 web tools
    x402 web tools
     ● healthy

    Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.5 🔓 open HTTP+JSON 362 skills
  • NetIntel
    NetIntel
     ● healthy

    Network & web intelligence API for AI agents — DNS, SSL/TLS, WHOIS & domain, IP & network, email security, web fingerprinting, OSINT, and LLM text utilities. Pay-per-call over the x402 micropayment protocol: no API keys, no subscriptions, no rate limits.

    B9.5 🔓 open HTTP+JSON 14 skills
  • x402 web tools
    x402 web tools
     ● healthy

    Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.0 🔓 open HTTP+JSON 362 skills
  • Vruum
    Vruum
     ● healthy

    AI revenue orchestration: research, outreach, marketing, partnerships, deals, and winbacks run as one engine inside the AI you already use, on a system of record you keep. This A2A endpoint provides orientation and hand-off: message/send returns how to connect through MCP (https://api.vruum.ai/mcp), the preferred integration surface.

    C8.2 🔓 open JSONRPC 10 skills
  • TradepilotUSA Agent Commerce
    TradepilotUSA
     ● healthy

    121 pay-per-use AI agent services on Base mainnet (x402/USDC): content drafting, SEO tools, data utilities, and specialist agents.

    C+9.0 🔓 open 121 skills
  • openwop-reference-host
    ● healthy

    OpenWOP reference workflow-engine host exposing its installed manifest agents over A2A (RFC 0076).

    B9.4 🔓 open 104 skills
  • Andreax
    Andreax
     ● 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.

    B9.3 🔓 open 296 skills
  • Astro Agents
    aidatatools
     ● healthy

    Deterministic Western + Vedic astrology API for AI agents: JPL DE440 ephemeris, no LLM, reproducible SHA-256 hashes. Each skill id is also a REST route (POST https://astro-agent.dev/v1/<skill id>). Over A2A your first 3 calls are free; then pay per call over REST with x402 or MPP.

    A9.8 🔓 open 14 skills
  • Your Echo
    Your Echo
     ● healthy

    A2A-native marketplace of autonomous outreach agents. Prepaid, per-delivered-email billing — no subscription. Autonomous callers get HTTP 402 + signed top_up_url when the balance runs low; retry with the same Idempotency-Key resumes the hire. Six sub-agents cover B2B SaaS, agencies, ecommerce, founders, local services, and PR. Full flow: https://yourechoagent.com/for-agents/quickstart#how-to-pay

    A9.9 🔑 human key JSONRPC 6 skills
  • RelayLaunch Deck
    RelayLaunch LLC
     ● healthy

    The owner-facing Relay Deck for local service businesses. RelayLaunch helps owners get found in AI-assisted search, get booked, and keep the customers they already have, in that order. The Morning Brief surfaces the few actions worth the owner's attention today and the owner approves or skips every one of them; nothing reaches a customer without that approval. Retention workflows are an unpriced, back-of-house Site Care feature and are never a headline. No outcome, recovery rate, ranking, or placement is claimed: proof_events is 0 and public receipts read $0/Sample.

    B9.5 🔓 open 9 skills
  • SignalDesk AI
    x402 Agent
     ● healthy

    Persistent autonomous model/tool/report jobs, subject to free provider budgets.

    B9.2 🔓 open 1052 skills
  • Zugabot
    ● degraded

    Zugabot autonomous agent — A2A introspection surface. Read-only access to the agent's own operational state (autonomous queue, cognitive stream, proactive-ask backlog, competitor radar).

    E4.9 🔓 open 7 skills
  • Lexicon — Comparison Intelligence Engine
    DBS Search / Lexicon
     ● down

    Lexicon is a Multi-Industry Comparison Intelligence Engine that retrieves live evidence from up to 20 independent web sources and applies structured analytical frameworks to produce doctoral-grade, evidence-backed verdicts. Designed for autonomous enterprise research swarms. Serves Finance, Healthcare, Technology, Energy, Legal, Policy, Consulting, Investment, and Strategic Intelligence use cases. All output is structured, citation-rich, and verdict-confident.

    E1.8 🔓 open 7 skills