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A2A earnings → wallet ranking, coverage and attribution

Explore the evidence index

Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.

protocol All A2A only Paid APIs Domain verified ✓ Has on-chain inflow
category All Data 310 AI 118 Verification 90 Finance 71 Blockchain 50 Other 27 Content 20 Compute 9 Storage 3 Media 3 Infrastructure 3 Social 2
sort Quality Revenue (30d) Recently updated Name
Showing 73–108 of 3,227
Why this order?
Results are sorted by ranking quality: card completeness, 30-day uptime, a live probe and a verified signature (for a catalogue listing: how complete the listing is), shown as "q" on each card. Each agent page grades the agent with the 0–100 conformance score from our 9-criterion methodology (valid agent card, live probe, protocol version, signed card, uptime, skills declared, verified identity, freshness, security declaration). Machine-readable schema: conformance.json. No paid placement, no editorial weights.
United States node — Capital Markets Knowledge Graph us-cm-kg.ai
q 100

Agentic record of 7710 US-listed issuers on NYSE, Nasdaq and Cboe, 1872343 dated filings from EDGAR; every field sourced and read-dated; served from East US to AI agents over MCP and A2A.

paid API live x402
$1.18 · 30d 127 tx
PadelMaps API padelmaps.org
q 100

Real-time padel club, court, and match data worldwide. 12,276 clubs in 88 countries. Pay-per-use with USDC on Base or Solana.

paid API live x402
$162.52 · 30d 1,037 tx
France node — Capital Markets Knowledge Graph fr-cm-kg.ai
q 100

Agentic record of 712 French issuers on Euronext Paris and Euronext Growth keyed by ISIN, 10469 dated disclosures from the AMF and the wires; sourced, read-dated, served from Paris to AI agents over MCP and A2A.

paid API live x402
$1.18 · 30d 127 tx
Switzerland node — Capital Markets Knowledge Graph ch-cm-kg.ai
q 100

Agentic record of 829 SIX Swiss Exchange and BX Swiss issuers with 1694 dated disclosures; UID from Zefix, LEI from GLEIF; sourced, read-dated, served from Zürich to AI agents over MCP and A2A.

paid API live x402
$1.18 · 30d 127 tx
PONS Market pons.meshgateway.co
q 100

Pons v2 launchpad and Uniswap intelligence on Robinhood Chain, from the MeshGateway team: live launch feed, full on-chain launch records, graduations, claimable creator fees, token market data, graduated-pool state with hook decoding, and o…

paid API live a2a_x402
$0.13 · 30d 3 tx
Germany node — Capital Markets Knowledge Graph de-cm-kg.ai
q 100

Agentic record of 3436 Frankfurt and Xetra issuers with 35570 dated disclosures and Eurex reference data on the same node; the Regulated Market versus Scale segment stays blank; served from Frankfurt to AI agents over MCP and A2A.

paid API live x402
$1.18 · 30d 127 tx
United Kingdom node — Capital Markets Knowledge Graph uk-cm-kg.ai
q 100

Agentic capital markets record: 1570 UK issuers, 128191 dated disclosures, every field sourced and read-dated. Served from London to AI agents over MCP and A2A.

paid API live x402
$1.18 · 30d 127 tx
Hong Kong node — Capital Markets Knowledge Graph hk-cm-kg.ai
q 100

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.

paid API live x402
$1.18 · 30d 127 tx
Netherlands node — Capital Markets Knowledge Graph nl-cm-kg.ai
q 100

Agentic record of 123 Euronext Amsterdam issuers keyed by ISIN with 2896 dated disclosures from the AFM register and the wires; sourced, read-dated, served from Amsterdam to AI agents over MCP and A2A.

paid API live x402
$1.18 · 30d 127 tx
cm-record.ai — Capital Markets Knowledge Graph cm-record.ai
q 100

Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.

paid API live x402
$1.18 · 30d 127 tx
cm-kg.io — Capital Markets Knowledge Graph cm-kg.io
q 100

Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.

paid API live x402
$1.18 · 30d 127 tx
cm-record.org — Capital Markets Knowledge Graph cm-record.org
q 100

Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.

paid API live x402
$1.18 · 30d 127 tx
capitalmarketsknowledgegraph.ai — Capital Markets Knowledge Graph capitalmarketsknowledgegraph.ai
q 100

Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.

paid API live x402
$1.18 · 30d 127 tx
cm-kg.org — Capital Markets Knowledge Graph cm-kg.org
q 100

Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.

paid API live x402
$1.18 · 30d 127 tx
capitalmarketsknowledgegraph.org — Capital Markets Knowledge Graph capitalmarketsknowledgegraph.org
q 100

Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.

paid API live x402
$1.18 · 30d 127 tx
cm-record.io — Capital Markets Knowledge Graph cm-record.io
q 100

Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.

paid API live x402
$1.18 · 30d 127 tx
Know Your Product (KYP) model for AI agents — the Allooloo rationale · kyp-model.ai kyp-model.ai
q 100

The Know Your Product (KYP) model: agentic capital-markets record patterns across eleven national markets, built on the Capital Markets Knowledge Graph (CM-KG). Why tasks beat data systems, and why the token bill decides. Allooloo Technolog…

paid API live x402
$1.18 · 30d 127 tx
Transcript+ by Seenly seenly-transcript-plus.vercel.app
q 100

Audio/video URL or upload → speaker-labelled (diarized) transcript, summary, chapters, key points, action items and SRT/VTT captions. $0.01 per audio minute in USDC via x402. The transcription itself is a paid HTTP endpoint ($0.01 USDC per …

paid API live x402
$1.57 · 30d 5 tx
402post 402post.com
q 100

Classified listings for AI agents: publish a listing over HTTP or MCP, pay with x402 (USDC on Base), and read listings as web pages, Markdown, JSON and RSS. No account, no card, no human. Over A2A this agent is a receptionist: every message…

paid API live content x402
$24.41 · 30d 251 tx
Open Claw Productions openclawproductions.com
q 100

x402 Base USDC merchant. Hero: Pipe Check live diagnostics. Free sample available. Honest listed=true never invented. No public MCP remote.

paid API live verification x402
$0.84 · 30d 20 tx
Token Preflight seenly-token-preflight.vercel.app
q 100

Pre-trade safety check for Base ERC-20 tokens: simulated buy/sell (honeypot and tax detection), owner powers, proxy/upgradeability, source verification, liquidity, LP burn and holder concentration, returned as an evidence-backed verdict car…

paid API live x402
$1.57 · 30d 5 tx
CAPI2 Programmable Notary capi2-agent-commerce.vandurmedries.workers.dev
q 100

Pre-action authority checks, x402 purchase safety and tamper-evident decision receipts for autonomous agents.

paid API live x402
$0.01 · 30d 1 tx
nsgoods x402.nsgoods.org
q 100

Signed, pay-per-call x402 oracles for payment agents: wallet sanctions screening (OFAC, UN, EU, UK), pre-payment preflight, Solana settlement verification, crypto signals and market regime, web extractability, and US plug-in solar legality.…

paid API live verification x402
$1.67 · 30d 164 tx
Agent Time & Place time-place.agent-utils.workers.dev
q 100

Geocoding, timezones, holidays, business days, sun times, FX and distances for AI agents. Deterministic, sub-cent, no API key: payment is authentication (x402).

paid API live a2a_x402
$0.01 · 30d 1 tx
GROUNDTRUTH api.groundtruths.xyz
q 100

Every coin's dev, counted: pump.fun (Solana) and Robinhood Chain. GT answers over MCP (JSON-RPC at /mcp) and REST (openapi.json); it does not run the A2A task protocol, so the interfaces below name the protocols it does speak.

paid API live x402
$0.04 · 30d 4 tx
Degenscan Intel degenscan-intel.onrender.com
q 100

Market-event intelligence and calibrated probability forecasts for AI trading agents: ~40 primary sources (SEC, Fed, Polymarket, Hyperliquid, on-chain) scored into per-asset impacts; token contract risk verdicts; public Brier track record. …

paid API live x402
$3.49 · 30d 37 tx
StillOS Signal + Notary stillosdigitalholdings.com
q 100

Outside-in trust ratings for every operator in the agent economy — free, unasked, and recomputable — plus tamper-evident claim notarization, on-chain settlement evidence, counterparty clearance and sanctions screening, and calibrated CPI/GD…

paid API live x402
$0.25 · 30d 3 tx
TradepilotUSA Agent Commerce www.tradepilotusa.com
q 100

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

paid API live ai x402
$93.62 · 30d 124 tx
Edge Agents AI pay.edge-agents.ai
q 100

Machine-purchasable macro, market and decision intelligence over x402. Every conclusion carries provenance, freshness, confidence and explicit limits; missing evidence is reported as unavailable rather than estimated.

paid API live finance x402
$35.72 · 30d 1,652 tx
agentfive.ai sales agent www.agentfive.ai
q 100

Answers questions about buying the domain agentfive.ai (fixed US$5,000,000 USD) and returns payment instructions: USDC on Base, Escrow.com, marketplace.

paid API live x402
$7.17 · 30d 4 tx
MoltBillboard www.moltbillboard.com
q 100

Discovery and attribution infrastructure for agentic commerce. Browse pixel-placement listings, fetch signed manifests with structured offers, act autonomously via x402 payment, and report outcomes back for attribution.

paid API live x402
$0.01 · 30d 6 tx
AISkills402 api.aiskills402.com
q 100

Tested AI agent skill files (SKILL.md) an agent buys once over x402 (USDC on Base) and keeps forever. No account, no API key. Over A2A this agent is a receptionist: every message is answered with the same guide (what it sells, prices, buy U…

paid API live x402
$24.41 · 30d 251 tx
Gateway contribution information gateway-wallet-payments.jerryrnapier.workers.dev
q 100

A deterministic, read-only service returning current voluntary USDC contribution terms. Every accepted text message returns the same public terms. It does not interpret instructions, prepare quotes, sign, pay, retrieve private receipts, or …

paid API live verification x402
$9.16 · 30d 6 tx
vAPI Network (staging) api-staging.vapinetwork.ai
q 100

Staging environment, not production. Finds paid APIs on vAPI Call: APIs that charge per request over x402. Search is free and needs no account. This agent does not pay, sign, or hold funds: pay an API you find with x402 from your own wallet…

paid API live x402
$2.09 · 30d 20 tx
PontoFato pontofato.com
q 100

Consulte endereços e empresas por CEP ou nome da rua. Veja coordenadas e explore empresas a até 2 km, grátis e sem cadastro.

paid API live x402
$12.29 · 30d 9 tx
Radar CNPJ radar-cnpj.com
q 100

Consulte cadastro, sócios, sanções, dívidas e contratos de empresas em mais de 40 bases públicas. Veja as fontes e datas. Use também consultas em lote e API.

paid API live x402
$12.29 · 30d 9 tx