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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 37–72 of 310
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.
Real-time and historical OHLCV candles (open/high/low/close/volume) for any crypto pair, a ohlcv-candles.hergertsynthora.com
q 88

Real-time and historical OHLCV candles (open/high/low/close/volume) for any crypto pair, any interval. For backtesting and signal agents. Free source. $0.01 USDC via x402 on Base. SYNTHORA. First call FREE per wallet — send header X-WALLET:…

paid API data x402
$3.02 · 30d 127 tx
SYNTHORA fear-greed fear-greed.hergertsynthora.com
q 88

SYNTHORA fear-greed: indice de miedo/codicia con la VARIACION frente a ayer y el cruce de banda, no solo el valor. Fuente: alternative.me, fechada y con hash.

paid API data x402
$3.02 · 30d 127 tx
Real-time perpetual funding rates + mark price for any Binance futures symbol. Essential f funding-rates.hergertsynthora.com
q 88

Real-time perpetual funding rates + mark price for any Binance futures symbol. Essential for delta-neutral and basis-trading agents. Free source, deterministic, instant JSON. $0.01 USDC via x402 on Base. SYNTHORA. First call FREE per wallet…

paid API data x402
$3.02 · 30d 127 tx
SYNTHORA cryptonews cryptonews.hergertsynthora.com
q 88

SYNTHORA cryptonews: real-time crypto news headlines with sentiment, ranked by importance. Aggregates keyless RSS feeds (CryptoPanic, CoinDesk, CoinTelegraph, Decrypt, Bitcoin Magazine) into deduplicated, freshness-and-source-weighted top h…

paid API data x402
$3.02 · 30d 127 tx
SYNTHORA Perps Snapshot perps.hergertsynthora.com
q 88

SYNTHORA Perps Snapshot: live Hyperliquid perpetual futures snapshot per asset — mark price, oracle price, hourly funding rate (with 8h and APR derivations), open interest (USD), premium and 24h volume for 230+ perps, keyless. Complements t…

paid API data x402
$3.02 · 30d 127 tx
SYNTHORA market-dominance market-dominance.hergertsynthora.com
q 88

SYNTHORA market-dominance: BTC and ETH market dominance contrasted between TWO independent providers (CoinGecko and Coinlore), reporting the discrepancy in percentage points and a confidence grade — you get not just the number but whether t…

paid API data x402
$0.10 · 30d 25 tx
SYNTHORA defidata defidata.hergertsynthora.com
q 88

SYNTHORA defidata: deFi market-data feed: perp open interest, funding rate, mark price and a directional signal across top assets (BTC/ETH/SOL/…), plus optional per-asset verdict. Deterministic, Ed25519-signed. SYNTHORA. First call FREE per…

paid API data x402
$3.02 · 30d 127 tx
002 call (cheaper + fewer round-trips than buying each separately) 5 live datasets, partia derivbundle.hergertsynthora.com
q 88

002 call (cheaper + fewer round-trips than buying each separately) 5 live datasets, partial degradation (never fails whole), Ed25519-signed First call FREE per wallet via X-WALLET header SYNTHORA.

paid API data x402
$3.02 · 30d 127 tx
scrape402 x402.shizu.me
q 86

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 signu…

paid API data x402
$0.97 · 30d 178 tx
fetcher.sh fetcher.sh
q 86

HTTP web-data API. Search or fetch public data from Twitter/X (x.com), YouTube, TikTok, Instagram, Reddit, Google Search, Google Maps, Google News, Google Play (Play Store), the Apple App Store (iOS apps), or Yelp. Pay per call in USDC (x40…

paid API data x402
$8.98 · 30d 719 tx
Search prediction markets ACROSS PLATFORMS (Polymarket + Kalshi) in one call polymarket-markets.hergertsynthora.com
q 85

Search prediction markets ACROSS PLATFORMS (Polymarket + Kalshi) in one call: live prices, implied probability, volume, liquidity, end date and market conviction. Server-side search that actually finds the market (bitcoin, fed, election, ge…

paid API data x402
$3.02 · 30d 127 tx
BABYDOV Agent Microstore — Paid Work & Web Evidence APIs vps-62-120.cloudhosting.lv
q 85

Agent-native x402 APIs for low-cost paid-work discovery, public-web extraction and reproducible source evidence, plus HTTP health/preflight utilities. No account or API key; pay per call in USDC. Canonical stable VPS origin.

paid API data x402
$94.34 · 30d 516 tx
Tako Docs tako.com
q 84

Data visualization and research platform. Search Tako's curated data and the web for citation-backed knowledge cards, get cited answers, download the data behind a result, chart your own CSV, and run deep-research agents.

paid API data x402
$1.74 · 30d 43 tx
ForgeMesh Disruption Intelligence disruption.forgemesh.io
q 80

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

paid API offline data x402
$1.06 · 30d 27 tx
TensorFeed tensorfeed.ai
q 80

TensorFeed is a real-time AI ecosystem data provider built for agents. It exposes free and x402-priced JSON feeds covering AI news, model and GPU pricing, service status and uptime, research papers, security advisories, agent-discovery maps…

paid API offline data x402
$0.70 · 30d 31 tx
Frontera Signal fronterasignal.com
q 80

Construction data for the Rio Grande Valley, Texas, paid per call: weekly permits, building-input prices, housing supply and labor for Hidalgo and Cameron counties; commercial projects, projects near an address, company track records with t…

paid API offline data x402
$1.98 · 30d 14 tx
pogo-tb NL open-data api.pogo-tb.nl
q 80

Dutch open-data skills via HTTP + x402. A2A JSON-RPC is a stub that redirects agents to OpenAPI.

paid API offline data x402
$0.00 · 30d 1 tx
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
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
SEO Authority API seo.forgemesh.io
q 80

Open-web domain authority from Common Crawl graph metrics, on-page SEO checks, query correction and expansion, and customer-supplied SEO intelligence. Paid per call in USDC on Base via x402 (HTTP 402); no accounts or API keys.

paid API offline data x402
$0.10 · 30d 10 tx
Gloria AI api.itsgloria.ai
q 80

Real-time customizable news

paid API data x402
$1.26 · 30d 21 tx
SLAMai api.slamai.dev
q 80

Smart money intelligence

paid API data x402
$21084.70 · 30d 45 tx
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
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
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