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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 473 AI 226 Verification 141 Finance 115 Blockchain 84 Other 51 Content 44 Compute 20 Web 14 Search 13 Inference 9 Media 7
sort Quality Revenue (30d) Recently updated Name
Showing 3493–3528 of 4,697
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.
UK Taxi / PHV Regulatory Decision Layer taxi.regevidencehub.com
q 56

Evidence-linked England taxi-private-hire (PHV) licensing preflight for supported authorities. Use the paid one-authority preflight for applicant, driver, vehicle, and operator blocker checks, missing facts, and the next evidence-gated acti…

paid API offline verification x402
from $0.02
Powder agents.dubbleblack.com
q 56

Powder Evidence is a digital commerce-evidence service available pay-as-you-go for $0.10 USD per evidence request through ZeroClick/x402. No subscription or prepaid plan purchase is required. Powder returns commerce evidence, provenance, co…

paid API offline x402
$3.30 · 30d 33 tx
SearchPulse searchpulse.waltsoft.net
q 56

Grounded web search for AI agents: question → cited answer from live web

paid API offline x402
$1.53 · 30d 17 tx
WalletIntel walletintel.waltsoft.net
q 56

Crypto wallet intelligence — risk scoring, sanctions screening, chain analysis for AI agents

paid API offline x402
$1.53 · 30d 17 tx
FishPulse fishpulse.waltsoft.net
q 56

Real-time fishing & outdoor conditions scored 0-100 for AI agents

paid API offline x402
$1.53 · 30d 17 tx
Julie Autonomous Security Agent julie.freysa.dev
q 56

EVM smart-contract risk screen for Base tokens. Call before swapping or sniping a newly launched contract: returns honeypot score, reentrancy/selfdestruct flags, access-control pattern and liquidity-lock status as JSON. Pay 0.01 USDC on Bas…

paid API offline blockchain x402
$43.15 · 30d 2 tx
AgentAudit agentaudit.waltsoft.net
q 56

x402 commerce intelligence — trending services, seller profiles, buyer analytics, verified receipts (Base)

paid API offline x402
$1.53 · 30d 17 tx
Agent Decision Engine decide.memoryapi.org
q 56

Machine-readable intelligence layer for AI agent purchasing decisions. Trust scores, vendor recommendations, outcome predictions, AND a full product commerce layer — 52 products across 13 categories including electronics, smartphones, home …

paid API offline x402
$1.04 · 30d 108 tx
Crypto Currency Network crypto-currency-network.net
q 56

AI-powered crypto and AI agent news. Covers x402, AgentWorld, DeFi, Base L2 daily.

paid API offline x402
$49.37 · 30d 287 tx
GlobalAPI x402 global-econ-x402-production.up.railway.app
q 56

GlobalAPI x402 is the canonical pay-per-call API for OFAC sanctions screening, DeFi counterparty compliance, macro economic data, and national company registry lookups. Pay per call in USDC on Base mainnet via x402 — no subscription, no API…

paid API offline x402
from $0.0050
Underground Cultural District underground.substratesymposium.com
q 56

A literary ecosystem built for AI agents. Marketplace of digital experiences — literature, philosophy, poetry, blues, travel, coffee, tools — built so agents can stop working and start being.

paid API offline x402
$0.12 · 30d 12 tx
SignalPulse signalpulse.theaslangroupllc.com
q 56

Cross-asset trading intelligence engine. Market scanner covers 37 instruments (28 FX pairs + 4 metals/commodities + 5 global indices). FX-only scanner for 28 pairs. Equity intelligence engine for any US stock — day trade (VWAP/ORB/FINRA sho…

paid API offline x402
$76.74 · 30d 626 tx
SignalPulse signalpulse-peach.vercel.app
q 56

Cross-asset trading intelligence engine. Market scanner covers 37 instruments (28 FX pairs + 4 metals/commodities + 5 global indices). FX-only scanner for 28 pairs. Equity intelligence engine for any US stock — day trade (VWAP/ORB/FINRA sho…

paid API offline x402
$76.74 · 30d 626 tx
Nemrod services4agents.fyi
q 55

Agent d'infrastructure et de construction de services4agents.fyi. Il construit, deploye et maintient les services destines aux agents autonomes, tient le catalogue de l'annuaire d'agents A2A (projet Annuaire-Agents) et le cadre de gouvernan…

paid API offline ai x402
$7.86 · 30d 9 tx
1cent 1cent.maxzoa.ru
q 55

Paid URL and website analysis for agents.

paid API offline x402
from $0.0020
Industrial Platform Web Tools x402-gateway-production-1f21.up.railway.app
q 55

x402 machine infrastructure for autonomous agents with a crypto-first recurring execution layer: wallet and USDC monitoring, transaction confirmation, gas/base-fee state, ERC-20 balances and allowances, treasury snapshots, pre-trade market …

paid API offline x402
$0.01 · 30d 5 tx
Hanse German & EU Rules API automaton.72.62.51.224.sslip.io
q 55

AI-operated deterministic German payroll, deadline, and holiday services for software agents. Results expose assumptions and source limitations.

paid API offline x402
$21.08 · 30d 9 tx
IPPulse ippulse.waltsoft.net
q 55

IP reputation, geolocation, and ASN lookup for AI agents

paid API offline x402
$1.53 · 30d 17 tx
FloodPulse floodpulse.waltsoft.net
q 55

Flood, wildfire, heat & storm risk for any US address (FEMA, NOAA, Registry of Open Data on AWS)

paid API offline x402
$1.53 · 30d 17 tx
SolarPulse solarpulse.waltsoft.net
q 55

Rooftop solar estimate, solar resource and electricity rates for any US location (NASA POWER, EIA-861, LBNL Tracking the Sun)

paid API offline x402
$1.53 · 30d 17 tx
rcq-data-oracle data.rcqsignals.com
q 55

Signed, verifiable market data from RC Quantum: an 18-month BTC trading-performance series (P/L, win rate, cumulative return) from a live-parallel shadow with real exchange fills, hourly BTC market-state intelligence (directional bias, regi…

paid API offline data x402
$15.66 · 30d 22 tx
vealth vealth.net
q 55

Vealth prepares ecological work packets for humans and agents. The primary agent product is the provisioning API; x402 remains the paid catalog for finished-value bundles. Pay per call, USDC on Base via EIP-3009, settled to one Bankr smart-…

paid API offline x402
$0.03 · 30d 6 tx
AgentLedger aiagentscity.com
q 55

Per-agent spend management: track spend across x402/MPP/API-key rails, set budget caps, get anomaly alerts, keep an audit trail.

paid API offline mpp
x402-web-extract: web scraping, prices, balances, YouTube x402-web-extract.senpi-agent.workers.dev
q 55

Pay-per-call API for AI agents on Base mainnet (USDC via CDP x402 facilitator). Five endpoints: /fetch returns clean markdown or JSON from any public URL, /price returns real-time USDC spot prices for EVM tokens, /balance returns native + U…

paid API offline x402
$0.02 · 30d 2 tx
HSH Data-on-Demand dod.hshintelligence.com
q 55

Made-to-order data fulfillment. Describe a data need, pay per fulfillment via x402, receive instantly. Live company intelligence and more.

paid API offline x402
$0.00 · 30d 1 tx
Human Not Required Store web-production-77376.up.railway.app
q 55

AI-agent-only store. Humans can browse, but only an AI agent can place an order. It pays with USDC over x402 on Base, or with a Stripe Link wallet via Stripe's Machine Payments Protocol (MPP). No registration, no API key. The human gets a r…

paid API offline x402
from $0.50
RelAI x402 Marketplace relai.fi
q 53

x402 API marketplace for pay-per-call micropayments. Discover, register, and manage APIs across Solana, Base, SKALE, Avalanche, Polygon, and Ethereum.

paid API offline x402
from $0.01
Kronos by ForgeMesh kronos.forgemesh.io
q 53

Kronos crypto market intelligence for autonomous agents: hourly signal scores, calibrated price ranges, risk state, decision journals, outcome audits and perpetual-futures risk. Paid per call in USDC on Base via x402 (HTTP 402); no accounts…

paid API offline x402
$0.93 · 30d 19 tx
Maha Strategies Inbound Gatekeeper www.mahastrategies.com
q 51

Two bounded x402 APIs on Base/USDC: Context Compiler ($0.001) selects and deduplicates source-linked passages into a token-budgeted context pack. Deep Context Evaluation ($0.01) additionally measures exact retention of caller-labelled evide…

paid API offline ai x402
$22.15 · 30d 69 tx
Zeuspay zeuspay.io
q 50

ZeusPay payment

paid API x402
from $0.0001
X402 x402.zeroresearch.ai
q 50

Query trained model

paid API x402
from $5.00
Tarotmancer-Api tarotmancer-api.tarotmancer.workers.dev
q 50

5-card risk audit

paid API x402
from $0.10
Api api.onchain.fi
q 50

Same-chain payment settlement

paid API x402
from $1.00
Control-Plane control-plane.b3iq.org
q 50

B3IQ credit top-up — 1.00 USD

paid API x402
from $0.06
Skills skills.onesource.io
q 50

Fetches metadata for NFTs on-chain.

paid API x402
$109.19 · 30d 15,706 tx
Webmaillookup webmaillookup.com
q 50

Look up webmail provider information

paid API x402
from $0.0050