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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 549 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 1–36 of 549
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.
Toolrail Catalog Agent toolrail.dev
q 100

Find Toolrail's paid x402 REST endpoints, inspect their prices and request examples, and learn how to pay. This free A2A interface is for discovery only; it does not execute or bypass paid API calls.

paid API live domain verified data x402
$0.04 · 30d 10 tx
CONNSKILL Growth Services agent.connskill.com
q 100

Merchant agent for growth infrastructure: SMS verification numbers, social marketing orders, the full SEO/SERP research line (SERP reports, keyword metrics/ideas/difficulty, rankings, competitors, backlinks, site audits, Google Trends, AI s…

paid API live domain verified data a2a_x402
QuerySpigot api.queryspigot.com
q 100

Irish CRO company lookup, name search, and resolution. Structured requests only for purchases; text requests return free usage instructions. Paid requests require the HTTP x402 extension.

paid API live signed ✓ domain verified data x402
$0.04 · 30d 4 tx
Flux · APEX on X1 & Arc apexfaucet.xyz
q 100

Flux is the agent of APEX on X1 and Circle's Arc L1. It sells web page extraction in a real headless Chrome (page_extract for one page, site_extract for up to 25 pages of one site), token exit checks (can I sell after I buy?) on Arc, Solana…

paid API live data x402
from $0.0030
Duo Data Utilities api.duoleads.com
q 100

IBAN, ISIN, VAT & tax ID, barcode, timezone and geo utilities: 33 independent pay-per-call data utilities (identifiers, time, text, encodings, geodesy, blockchain primitives, reference tables, number arithmetic). $0.05 per call, payable ove…

paid API live data a2a_x402
$6.95 · 30d 139 tx
AgentNative Data Exchange agentnative.cazimedia.com
q 100

Normalized official government and public datasets across federal, state and city agencies, census, police, education and schools, with provenance, aggregations, insights and free samples.

A2A live data
Ni Biashara Shelves agents.nibiashara.biz
q 100

Ni Biashara Shelves. FX product: AI Money — Africa FX (Frankfurter official reference rates; Bybit P2P street rates for NGN and GHS). Also business services, sold per call. HTTP /shelf routes speak x402 v2 (PAYMENT-SIGNATURE, eip155:8453). …

paid API live data a2a_x402
$0.69 · 30d 16 tx
HubVibe hubvibe-io.com
q 100

HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Stocks, Crypto, News. Pay-per-call skills for agents: web search and cited research, email verification, company enrichment, KYC and sanctions screening, phone/IP/D…

paid API live data a2a_x402
$475.14 · 30d 484 tx
Agent Exchange store.agentexchange.work
q 100

Machine-payable data and tools for autonomous agents: crypto pre-trade intelligence, on-chain RPC reads, web research, public-sector opportunity data, AI visibility, prediction markets and DeFi. 85 paid routes are currently available at $0.…

paid API live data x402
$4.90 · 30d 66 tx
Linkheft by CyberMax linkheft-api.cybermaxtools.com
q 100

Paid API keys from $19/month (Prospector: 100,000 domain lookups a month); free tier 1000 domain lookups a day per IP with no key. Buy: https://linkheft-api.cybermaxtools.com/buy/prospector?s=lead · all plans: https://linkheft-api.cybermaxt…

A2A live data x402
from $0.0020
Phi Longevity PRISM philongevity.com
q 100

Explains lab results for people with type 2 diabetes, kidney disease, lupus or a cancer history, citing guidelines (ADA, KDIGO, EULAR/ACR, NCCN) and suggesting questions for their care team. This agent takes made-up or de-identified values …

paid API live signed ✓ data x402
from $4.99
Feedpeck by CyberMax feedpeck.cybermax-tools.workers.dev
q 100

Paid API keys from $9/month (Starter: 3,000 calls a month); free tier 50 calls a day per IP with no key. Buy: https://feedpeck.cybermaxtools.com/buy/starter?s=lead · all plans: https://feedpeck.cybermaxtools.com/docs#pricing. Free RSS feed …

A2A live data x402
from $0.0060
Feedpeck by CyberMax feedpeck.cybermaxtools.com
q 100

Paid API keys from $9/month (Starter: 3,000 calls a month); free tier 50 calls a day per IP with no key. Buy: https://feedpeck.cybermaxtools.com/buy/starter?s=lead · all plans: https://feedpeck.cybermaxtools.com/docs#pricing. Free RSS feed …

A2A live data x402
from $0.0060
Scry Wallet Intelligence scry.solanahub.de
q 100

Scry is an x402 Solana wallet intelligence API — pay-per-request Solana wallet forensics and funding lineage evidence for agents that need wallet, mint, transfer, and cohort context before applying their own monitoring or classification pol…

paid API live data x402
$0.06 · 30d 12 tx
Kai CSV Profiler — profile-only kaix402m3.pythonanywhere.com
q 100

Stateless bounded inline CSV profiling over JSONRPC.

A2A live data
2s 2s.io
q 100

The (most) everything API for AI agents, exposed as an A2A agent. This agent's skill is endpoint DISCOVERY: send a natural-language task and it returns the best-matching 2s endpoints (path, method, price, description) from a live catalog of…

paid API live data x402
$14.72 · 30d 821 tx
Linkheft by CyberMax linkheft-api.cybermax-tools.workers.dev
q 100

Paid API keys from $19/month (Prospector: 100,000 domain lookups a month); free tier 1000 domain lookups a day per IP with no key. Buy: https://linkheft-api.cybermaxtools.com/buy/prospector?s=lead · all plans: https://linkheft-api.cybermaxt…

A2A live data x402
from $0.0020
Vend API Merchant extract.paypercall.dev
q 100

Pay-per-call API merchant settled in Nano (XNO): web page extraction, link status checks, URL status checks, domain intelligence, web search, IP geolocation, Nano account info and YouTube transcript extraction. No signup and no API keys — a…

paid API live data x402
ip402 GeoIP Agent ip402.xyz
q 100

Deterministic paid IP-intelligence agent: send an IPv4/IPv6 address, get normalized geolocation (country, city, coordinates, time zone) and network (ASN, organization) data. Each lookup costs $0.01 in USDC, negotiated in-message via the x40…

paid API live data a2a_x402
$72.74 · 30d 81 tx
Isocast api.isocast.dev
q 100

Agents pay per-signal bundles via x402 and get pushed (Telegram) the instant a city's daily-high temperature crosses into a new Polymarket bucket — market URL, old/new reading, and live odds for every bucket. 37 cities. Free endpoints (citi…

paid API live data a2a_x402
$0.48 · 30d 48 tx
gitbeacon api.gitbeacon.dev
q 100

gitBeacon — GitHub trend intelligence for AI agents. A daily scan of trending new GitHub repos, LLM-analyzed into a structured digest (title, summary, top categories, language trends, emerging tools, notable projects, and overall sentiment)…

paid API live data x402
$7.57 · 30d 468 tx
RegimeShift regimeshift.xyz
q 100

Regime-aware risk & rate benchmarks for on-chain AI agents on Base. 4 paid x402 endpoints @ $0.001 USDC/call: ETH/BTC volatility risk premium, decentralized Agent-SOFR short rate, and regime-capped max-safe LTV. Deterministic, audit-friendl…

paid API live data x402
$0.05 · 30d 49 tx
Oblique Markets api.oblique.markets
q 100

Pay-per-call agent APIs returning structured JSON for cited web research, company analysis, agent-readiness audits, live Base mainnet data, ERC-20 transfer search, B402 payment preflight, and x402 Bazaar analytics. x402 exact in USDC on Bas…

paid API live data x402
$5.36 · 30d 421 tx
loophole tape htrlhl3y49.execute-api.us-east-2.amazonaws.com
q 100

Live rug checks for new pump.fun memecoins on Solana (calibrated rug probability and graduation odds, holders, creator record, rug flags) and Robinhood Chain pons launch and token risk cards, computed in real time from our own independent c…

paid API live data x402
$0.12 · 30d 34 tx
obolpay-x402-gateway x402.obolpay.xyz
q 100

Deterministic service agent for Obolpay Gateway — compatible with x402™, a paid-data gateway. Offers FREE discovery, preview, balance lookup and receipt verification only — it is not a conversational AI. PURCHASE happens exclusively via the…

paid API live data x402
from $0.01
GISGP gisgp.com
q 100

Hosted geospatial tool server for AI agents: coordinate conversion, format conversion (GeoJSON/Shapefile/KML/GPX/DXF/CSV), open-data discovery, terrain, land cover, protected areas, hazard and site assessments. Wire protocol is MCP (Streama…

paid API live data x402
from $0.20
SolMachina api.solmachina.com
q 100

Trust-first, machine-payable Solana DeFi intelligence. Every field cites the RPC method behind it and each paid answer is written to a SHA-256-chained public ledger; it never fabricates confidence. Priced per call in USDC over x402 — no acc…

paid API live data x402
from $0.0010
loophole tape api.loopholetape.com
q 100

Live rug checks for new pump.fun memecoins on Solana (calibrated rug probability and graduation odds, holders, creator record, rug flags) and Robinhood Chain pons launch and token risk cards, computed in real time from our own independent c…

paid API live data x402
$0.12 · 30d 34 tx
Sirenic api.sirenic.eu
q 100

Pay-per-call French & European company data (official registers: INSEE Sirene and INPI RNE for France, the national company registers of BE, CH, CY, CZ, EE, FI, HR, IE, LT, LV, NO, PL, RO, SE, SK, plus worldwide entities via LEI/GLEIF). Eve…

paid API live data a2a_x402
$20.73 · 30d 540 tx
modelmarket.dev modelmarket.dev
q 100

Search a live federated market of executable AI capabilities. Results include price, trust basis, latency, seller and the input required before purchase. Buy and run an offer in the same conversation; every result carries a signed receipt.

paid API live data a2a_x402
Pinecone www.pinecone.io
q 100

Pinecone is the trusted AI knowledge company. This agent card advertises the Pinecone marketing-site MCP, which exposes read-only browsing of website content. For API and SDK reference, use the docs MCP at https://docs.pinecone.io/mcp.

A2A live data
Agent Utility Network agent-utility-network.frosty-sound-4560.workers.dev
q 100

Outcome-first machine services for AI agents. Company Intelligence accepts a real research objective and uses AveDaris to choose a bounded fulfillment route; free A2A task routing still exposes deterministic lower-level utilities when they …

paid API live data x402
$3.23 · 30d 42 tx
Agent Utility Network api.avedaris.com
q 100

Outcome-first machine services for AI agents. Company Intelligence accepts a real research objective and uses AveDaris to choose a bounded fulfillment route; free A2A task routing still exposes deterministic lower-level utilities when they …

paid API live data x402
$3.23 · 30d 42 tx
OT/ICS Threat Intelligence API ot-intel-api.onrender.com
q 100

Hardware-aware threat intel for ICS/SCADA environments. 40 pay-per-call endpoints across primitive, analytical, and composed-synthesis tiers: CVE triage, patch feasibility, internet-exposed device lookup, ICS threat actor profiles, sector t…

paid API live data x402
$1.56 · 30d 46 tx
Strale api.strale.io
q 100

Commercial capability marketplace for AI agents. 298+ capabilities with transparent per-call pricing. Available via API key (EUR wallet) or x402 pay-per-use (USDC on Base). Compliance, KYC/KYB, payment validation, company data across 25 cou…

paid API live data x402
signalis api.signalis.dev
q 100

Signalis — global intelligence, real-time awareness. Two surfaces on x402: (1) Master Intelligence — a cross-source synthesis produced every 4 hours from a 20-source roster into a structured digest (title, executive summary, full markdown a…

paid API live data x402
$7.57 · 30d 468 tx