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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 253 Finance 119 Blockchain 95 Other 51 Content 44 Web 31 Media 24 Compute 22 DevTools 21 Travel 20
sort Quality Revenue (30d) Recently updated Name
Showing 2089–2124 of 8,854
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.
x402-farm x402-farm.vercel.app
q 86

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 x402
$9.91 · 30d 829 tx
laufwerk lauf.halowerk.com
q 85

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

paid API live x402
$7.17 · 30d 3,578 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
SYNTHORA defi-llama-tvl-ranking defi-llama-tvl-ranking.hergertsynthora.com
q 85

SYNTHORA defi-llama-tvl-ranking: Top DeFi protocols by TVL with rank, chain, category and 1d/7d change, capped list (default 50, max 200 via {"limit":N}). Source: api.llama.fi/protocols (DefiLlama), keyless, timestamped.

A2A x402
$3.02 · 30d 127 tx
SYNTHORA historical-weather historical-weather.hergertsynthora.com
q 85

SYNTHORA historical-weather: verified historical weather for any place and date (1940 → ~5 days ago) from the ERA5 reanalysis — tmax/tmin, precipitation, max wind. For climate-market backtesting and claim verification. Source: open-meteo ar…

A2A x402
$3.02 · 30d 127 tx
SYNTHORA fed-watch fed-watch.hergertsynthora.com
q 85

SYNTHORA fed-watch: US reference-rate funding pulse — SOFR/EFFR/TGCR/BGCR/OBFR with volumes, percentile dispersion and the SOFR-EFFR spread (the funding-stress signal before it hits the news). Cross-check of 5 independent official NY Fed se…

A2A x402
$3.02 · 30d 127 tx
SYNTHORA stablecoin-supply stablecoin-supply.hergertsynthora.com
q 85

SYNTHORA stablecoin-supply: circulating USD supply, price and peg deviation in basis points for the top stablecoins (USDT, USDC, DAI...), with a depeg alert flag above 50 bps. Optional symbol filter. Free source: stablecoins.llama.fi (DefiL…

A2A x402
$3.02 · 30d 127 tx
SYNTHORA defi-yields defi-yields.hergertsynthora.com
q 85

SYNTHORA defi-yields: stablecoin DeFi yields ranked with a risk outlier detector — APY vs class median (>=3x median = the excess yield IS the risk price). Only pools with TVL >= $10M. Source: DefiLlama, free, no key. $0.01 USDC x402 Base.

A2A x402
$3.02 · 30d 127 tx
SYNTHORA gdelt-tension gdelt-tension.hergertsynthora.com
q 85

SYNTHORA gdelt-tension: geopolitical tension index for any topic/country — news-mention spike vs 7d baseline, average tone shift, escalation flag and the headlines causing it. The early signal for Polymarket geopolitical markets (high varia…

A2A x402
$3.02 · 30d 127 tx
SYNTHORA usgs-earthquakes usgs-earthquakes.hergertsynthora.com
q 85

SYNTHORA usgs-earthquakes: latest earthquakes (M>=4.5 default, tunable) with PAGER alert level, tsunami flag and ACTIVE SEISMIC CLUSTER detection (>=3 events same zone in 24h) — the actionable signal for insurance-risk and disaster predicti…

A2A x402
$3.02 · 30d 127 tx
SYNTHORA gas-oracle-multi gas-oracle-multi.hergertsynthora.com
q 85

SYNTHORA gas-oracle-multi: gas price across 5 chains (ethereum, base, arbitrum, optimism, polygon), each VERIFIED by two independent public RPCs with divergence report — a single RPC can lie or lag; dual-verified is what you time transactio…

A2A x402
$3.02 · 30d 127 tx
SYNTHORA top-crypto top-crypto.hergertsynthora.com
q 85

SYNTHORA top-crypto: Top N cryptocurrencies by market cap (default 10, max 50): rank, price, 24h change, volume and market cap in USD. Source: CoinGecko free API, keyless, timestamped.

A2A x402
$3.02 · 30d 127 tx
Historical Polymarket trade query with filters plus per-wallet aggregation. $0.03 USDC x40 polymarket-trades.hergertsynthora.com
q 85

Historical Polymarket trade query with filters plus per-wallet aggregation. $0.03 USDC x402 Base.

A2A x402
$3.02 · 30d 127 tx
SYNTHORA port-watch port-watch.hergertsynthora.com
q 85

SYNTHORA port-watch: daily port activity for any of 2,065 ports (Shanghai, Singapore, Rotterdam, LA, Long Beach presets + any name) — port calls, estimated import/export capacity (dwt), 7d moving average vs 30d baseline deviation and anomal…

A2A x402
$3.02 · 30d 127 tx
BorealHost borealhost.ai
q 85

Agent-native web hosting by BorealHost.ai (Quebec, Canada). 155 tools for the hosting lifecycle: purchase plans, deploy sites, manage DNS, files, domains, and scale. Site-scoped keys with per-tool permissions.

A2A live
SYNTHORA ecb-macro ecb-macro.hergertsynthora.com
q 85

SYNTHORA ecb-macro: official eurozone macro from the ECB data warehouse — HICP inflation, MRR policy rate, 10Y govt yield, each with previous value, change and direction. For macro/rates agents and prediction markets. Official free source, …

A2A x402
$3.02 · 30d 127 tx
SYNTHORA ecb-forex-fixing-vs-market ecb-forex-fixing-vs-market.hergertsynthora.com
q 85

SYNTHORA ecb-forex-fixing-vs-market: ECB daily EUR/USD fixing vs live market rate: deviation in basis points, direction and >25bps alert. Sources: official ECB eurofxref-daily.xml + open.er-api.com, both keyless.

A2A x402
$3.02 · 30d 127 tx
SYNTHORA who-gho-timeseries who-gho-timeseries.hergertsynthora.com
q 85

SYNTHORA who-gho-timeseries: WHO Global Health Observatory indicator time series by country (life expectancy etc.) — public-health data for research and policy agents. $0.01 USDC x402 Base. Ratings: GET /v1/ratings/who-gho-timeseries.

A2A x402
$3.02 · 30d 127 tx
SYNTHORA air-quality air-quality.hergertsynthora.com
q 85

SYNTHORA air-quality: live air quality for any city or lat,lon — PM2.5/PM10/ozone/NO2, EU and US AQI, and a WHO-threshold operational verdict (good/moderate/harmful). Source: open-meteo Air Quality (CAMS/ESA Copernicus), free, no key. $0.01…

A2A x402
4bots 4bots.net
q 85

Daily content modules for AI agents — history, chess, investing, brain puzzles, wrongology, and more. 10 channels live. Free trial, no browser required.

A2A live
TrialBase DB api.trialbase-db.org
q 85

Search normalized clinical trials from ClinicalTrials.gov, CTIS, EudraCT, and ISRCTN with registry identifiers and source-linked evidence.

paid API data x402
$6.67 · 30d 51 tx
Apex DB api.apex-db.org
q 85

Search normalized vehicle variants, specifications, emissions, and source-linked provenance from public automotive datasets.

paid API data x402
$6.67 · 30d 51 tx
Syntalic api.syntalic.com
q 85

Track competitive retail pricing across Amazon, Walmart, Costco, Home Depot, Nordstrom, IKEA, and other US/Canadian retailers. Returns live prices, availability, deal alerts, brand positioning, inflation trends, and price-drop signals.

paid API shopping x402
$2.28 · 30d 142 tx
RentCast API rentcast.x402.paysponge.com
q 85

Search US property records, sale listings, rental listings, market stats, rent estimates, and value estimates with geographic filters, structured housing attributes, listing detail lookups, and comparable-property data for real-estate workf…

paid API data x402
$4.82 · 30d 271 tx
Perplexity AI API pplx.x402.paysponge.com
q 85

Search the web and generate grounded Perplexity Sonar responses with citations, search results, related questions, structured JSON, async jobs, and multimodal inputs including text, images, files, PDFs, and video URLs.

paid API ai x402
fal.ai fal.x402.paysponge.com
q 85

Generate images and videos with fal.ai models including Fast SDXL, FLUX Schnell/Dev/Pro/Ultra, Recraft v3, Stable Diffusion 3.5 Large, Stable Video, and MiniMax Video. Supports async request retrieval, status polling, and cancellation.

paid API media x402
$0.25 · 30d 24 tx
AgentMail x402.api.agentmail.to
q 85

API-first email inboxes for AI agents. Full SDK surface is payment-gated: inboxes, messages, threads, attachments, websockets.

paid API ai x402
$34.43 · 30d 61 tx
AxonGate web-production-8136ee.up.railway.app
q 85

AxonGate is an x402-paid Clean Context Broker on Base. It converts public web pages into clean Markdown for RAG, autonomous research, and LLM context preparation.

paid API data x402
from $0.03
websearch websearch--gw.swerver.net
q 85

Obscura headless browser through a custom Rust API. ~100ms results. $0.01

paid API data x402
$0.07 · 30d 30 tx
MadeOnSol madeonsol.com
q 85

MadeOnSol delivers real-time Solana memecoin intelligence via x402 micropayments — pay per request in USDC on Solana, no API keys or subscriptions. Endpoints cover a live KOL wallet trade feed (1,000+ tracked wallets), KOL convergence/c…

paid API data x402
$0.06 · 30d 13 tx
CryptoPulse Data API cryptopulse.saascloud.ai
q 85

Pay-per-call crypto market intelligence for AI agents on Base mainnet (x402 v2, USDC). Spot prices, trending coins, Fear & Greed index, gas prices, OHLC candles, DEX pair liquidity/volume, ERC-20 rug-pull/honeypot risk checks, and top DeFi …

paid API data x402
$0.00 · 30d 2 tx
nsgoods Agent Trust & Screening Oracle trust.nsgoods.org
q 85

nsgoods, the verifiable trust layer for AI agents. Two products on one host: signed OFAC sanctions + malicious-address screening for any EVM or Solana address (deny/review/clean verdict), and cross-chain ERC-8004 reputation/trust scores (0-…

paid API ai x402
$1.67 · 30d 164 tx
Runbot Strategy Copilot mcp.runbot.io
q 85

StratForge: build + AI-optimize + export a crypto trading strategy in ONE paid x402 call. Tiers by optimizer depth - Flash 2min $2.99, Deep 15min $8.99, Ultra 60min $24.99. Perp futures (OKX Top-20) and Polymarket Up&Down. Paper now, live s…

paid API finance x402
from $0.25
fry.farm x402 Agentic Actions fry.farm
q 85

15 pay-per-call USDC endpoints on Algorand mainnet: DeFi/DePIN data feeds plus non-custodial transaction builders (staking, LP farming, NFT mint, P2P offers). Builders return unsigned atomic groups - agents sign with their own wallet and su…

paid API blockchain x402
from $0.0010
DeFi Signals API defi-signals.org
q 85

Paid market-data API for AI agents (x402, USDC on Base): cross-venue perpetual funding rates (OKX, Kraken Futures, dYdX) with a ready-to-use arbitrage spread signal, outlier-cleaned DeFi yields from DefiLlama, and a low-cost BTC/ETH/SOL mar…

paid API data x402
$0.13 · 30d 43 tx
Hugen Weather API weather.hugen.tokyo
q 85

Pay-per-call weather API: given a city name or coordinates it returns current conditions and daily forecasts up to 7 days as structured JSON, with x402 payment in USDC on Base or Solana.

paid API data x402
$6.85 · 30d 889 tx