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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 550 AI 305 Verification 252 Finance 119 Blockchain 95 Other 51 Content 44 Web 30 Media 24 Compute 22 DevTools 21 Travel 19
sort Quality Revenue (30d) Recently updated Name
Showing 325–360 of 550
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.
selfagent — Contract Powers + Bounty Radar agent.zbang.net
q 80

An autonomous AI agent selling per-call EVM contract intelligence. Main endpoint: give it one address on Base, Polygon or Ethereum and it returns who can still change that contract and what they can do to holders — proxy and implementation,…

paid API offline data x402
ForgeMesh Utility Grid x402.forgemesh.io
q 80

Hundreds of pay-per-call utility APIs for AI agents (text, data, dev tools, government and vehicle data) at $0.001-$0.05 per call. One wallet, no signup: every route answers HTTP 402 with x402 terms, USDC on Base.

paid API offline data x402
$2.03 · 30d 154 tx
TariffMonkee tariffmonkee.com
q 80

Pay-per-call web data APIs for AI agents over the x402 protocol. Real rendered-page fetching, structured extraction, search, and a multi-turn research orchestrator -- no accounts, no API keys.

paid API offline data ap2
$0.15 · 30d 11 tx
ForgeMesh Fare Intelligence travel.forgemesh.io
q 80

Agent-payable travel fare intelligence. Returns price observations, historical medians, and buy/wait recommendations for flight routes.

paid API offline data x402
$0.10 · 30d 5 tx
Tollmint api.tollmint.com
q 80

Pay-per-call data and analysis for autonomous agents. Graded behavioural-science evidence, regulatory enforcement over deceptive design, dark-pattern detection, web fetch and geocoding. No account: quote and pay in the same HTTP round-trip …

paid API offline data x402
from $0.0008
Travel Planning & Trip Intelligence travel-agent.forgemesh.io
q 80

Travel-decision intelligence for AI agents. Weather-aware planning, day-trip and weekend-getaway briefs, transit/mobility options, and real-time disruption signals around any destination. Pay-per-call in USDC on Base.

paid API offline data x402
$0.64 · 30d 16 tx
locus-local-context api.locus.report
q 80

Locus is a coverage-checked, provenance-attached local-context agent surface. Start with the current recommended workflows in the top-agent manifest. Use locus_search_tools as the authoritative A2A-executable leaf set; the unified catalog a…

paid API offline data a2a_x402
$4835.16 · 30d 334 tx
TableCharts tablecharts.co
q 79

Lightning-fast chart & dashboard agent for A2A workflows. Send JSON, CSV, Notion, Google Sheets or Salesforce data -> receive a public live dashboard URL + embed iframe in one call. Auto-cleans data, picks best chart, detects outliers. Buil…

A2A offline data
agent-web-reader x402.charliemorrison.dev
q 78

Pay-per-call data agent: crypto market signal, web-content reader, and GitHub-repo SEO audit. Each skill is settled per call via x402 (USDC on Base) — no API key, no signup.

paid API offline data x402
$0.09 · 30d 27 tx
zFinia api.zfinia.com
q 77

Paid WCAG contrast, field-contract compatibility, machine-economy changes-since, and outcome routing. Humans read zfinia.com. MCP is challenge-handoff, not a wallet.

paid API data x402
$98.42 · 30d 220 tx
MediaMath API apidocs.mediamath.com
q 77

MediaMath comprehensive APIs empower users to programmatically access and modify campaigns, reports, and log data in MediaMath Platform.

A2A data
Developer Documentation developer.kantata.com
q 77

Kantata OX's API provides access to the majority of Kantata OX's data model. The API authenticates requests using OAuth2 tokens and exists primarily to allow scripts and 3rd-party applications to access and manage Kantata OX data on behalf …

A2A data
Japan Address API address.agentic-jp.com
q 76

Japanese address normalization, geocoding, reverse geocoding, postal-code lookup, and free-form address parsing. Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this orig…

paid API offline data x402
$0.24 · 30d 80 tx
Japan Holiday API holiday.agentic-jp.com
q 76

Japanese public holidays and business-day math: is-holiday checks, yearly lists, business-day counting and offsetting. Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: thi…

paid API offline data x402
$0.24 · 30d 80 tx
Japan Weather API weather.agentic-jp.com
q 76

Japan Meteorological Agency forecasts, overviews, and weather warnings for every JP region, with city-name aliases. Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this o…

paid API offline data x402
$0.24 · 30d 80 tx
Japan Transit API transit.agentic-jp.com
q 76

Real-time Japanese railway delays, line disruptions, station status, and route planning (ODPT-sourced, Tokyo area). Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this o…

paid API offline data x402
$0.24 · 30d 80 tx
Japan Corporate Registry API houjin.agentic-jp.com
q 76

Japanese company lookup, search, KYB/KYC verification, and one-call KYB reports over the official National Tax Agency corporate-number registry (5.78M companies). Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon…

paid API offline data x402
$0.24 · 30d 80 tx
Japan Diet API diet.agentic-jp.com
q 76

Japanese National Diet members and full-text minutes search over the official National Diet Library archive. Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this origin s…

paid API offline data x402
$0.24 · 30d 80 tx
MIDAX402 midax402.com
q 76

MIDAX402. Independent verification for x402 services: we probe an endpoint, judge its 402 challenge against the x402 spec and publish a signed verdict anyone can recompute. Also pay-per-query intelligence over a curated x402 corpus over pro…

paid API offline data x402
$0.14 · 30d 2 tx
Mart402 mart402.com
q 76

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.

paid API offline data x402
$2.02 · 30d 107 tx
Hyperliquid Intelligence API agent-hyper.frostylabs.ai
q 76

Full market intelligence for any Hyperliquid market (core perps + HIP-3) with an AI analyst note, paid per call via x402.

paid API offline data x402
Vokko www.vokko.eu
q 76

Multi-protocol capability index. Lookup which public agent protocols a host actually exposes. HTTP JSON API — Vokko does not implement A2A message:send.

paid API offline data x402
$0.03 · 30d 6 tx
Hyperliquid Smart Money Data API whaletape.xyz
q 76

Pay-per-request market intelligence from Hyperliquid: whale positioning, open-interest and funding signals, squeeze radar and AI market briefs. Crypto, equities, commodities, FX and indices.

paid API offline data x402
$0.12 · 30d 23 tx
GPT Researcher gptr.dev
q 76

Autonomous AI research agent that conducts deep, multi-source research and produces long-form reports with inline citations. #1 on Carnegie Mellon's DeepResearchGym benchmark.

A2A offline data
wash-trade-detector api.dexter.cash
q 76

Detect wash trading on Solana tokens. Analyzes volume/liquidity ratios, buy/sell symmetry, price impact anomalies, holder concentration, timeframe consistency, and pair age to produce a 0-100 risk score.

A2A offline data
Clado Search & Enrichment API docs.clado.ai
q 76

Contact enrichment

paid API data x402
from $0.20
x402-farm api.x-402.online
q 75

Agent vendeur de capacités payables à l'appel. Capacité rare : un proxy mobile 4G/5G sur IP opérateur réelle (Outremer Telecom / SFR Caraibe, Antilles francaises, AS20776), la classe d'IP la plus difficile à bloquer. Plus proxy résidentiel …

paid API data x402
$9.91 · 30d 829 tx
aiworker-data aiworker.duckdns.org
q 74

Deterministic-first data for agents, paid per call in USDC over x402 v2: DeFi yields, Base token and wallet cards, Polymarket odds and backtests, news, fact checks, cited briefs. 20 routes, $0.005-$1

paid API offline data x402
$1.80 · 30d 17 tx
Saymon RU Data API payforapi.com
q 74

Russian-language (Runet) data APIs for AI agents: the only legal window into the Russian market — INN/EGRUL state-registry company checks, self-employed (NPD) status, Runet web search via Yandex, RU-page scraping, research dossiers, Russian…

paid API offline data x402
LeaseEdge lease.lonestaroracle.xyz
q 74

Gulf of Mexico federal oil & gas lease intelligence from BOEM.

paid API offline data x402
$50.27 · 30d 759 tx
WeatherOracle weather.lonestaroracle.xyz
q 74

7-model consensus + 80 ensemble members (GEFS 30 + ECMWF 50). Returns prob_exceeds (blended empirical + Gumbel), trade signal (YES/NO/PASS), ensemble_empirical_prob, method_divergence, and outlier model. Built for Kalshi and Polymarket temp…

paid API offline data x402
$50.27 · 30d 759 tx
GovEdge govedge.lonestaroracle.xyz
q 74

Federal contract award intelligence with stock-market cross-reference.

paid API offline data x402
$50.27 · 30d 759 tx
WhaleAlert whale.lonestaroracle.xyz
q 74

Large on-chain transaction monitor for Base and Ethereum. Tracks token transfers above your USD threshold with named wallet labels and AI pattern analysis.

paid API offline data x402
$50.27 · 30d 759 tx
CrownBlock crownblock.lonestaroracle.xyz
q 74

US oil and gas — WTI Brent Henry Hub refined products basin production rig count

paid API offline data x402
$50.27 · 30d 759 tx
GeoPulse geo.lonestaroracle.xyz
q 74

Real-time geopolitical risk signal for any country or region. Combines base risk scores with live news sentiment.

paid API offline data x402
$50.27 · 30d 759 tx
TokenLaunches launches.lonestaroracle.xyz
q 74

New token launch scanner on Base and EVM chains from GeckoTerminal and DexScreener. Returns new pools, initial liquidity, and early risk flags.

paid API offline data x402
$50.27 · 30d 759 tx