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A2A earnings → wallet ranking, coverage and attribution

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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 3349–3384 of 4,738
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.
asia.lonestaroracle.xyz asia.lonestaroracle.xyz
q 65

Asia regional macro + geopolitical stress pulse (no params)

paid API x402
$50.27 · 30d 759 tx
domain-age-checker.underscoredone.com domain-age-checker.underscoredone.com
q 65

Send a list of domain names and this tool tells you exactly how old each one is, when it was first registered, when it expires, and how much time is left before expiration. Great for spotting brand-new suspicious domains, researching compet…

paid API x402
$1.69 · 30d 164 tx
domain-availability-checker.underscoredone.com domain-availability-checker.underscoredone.com
q 65

Give this API up to 10 domain names and it tells you whether each has a registration record at the official registry. It uses RDAP, the structured replacement for WHOIS, so there is no free-text parsing. Each domain comes back as 'registere…

paid API x402
$1.69 · 30d 164 tx
ebay.use.x402atlas.com ebay.use.x402atlas.com
q 65

eBay listings search — live prices, condition, shipping, seller reputation, auctions & Buy It Now across supported regional eBay sites, with category, price band, condition, seller & location filters, sorted, as clean JSON.

paid API x402
$12.29 · 30d 462 tx
bimi-checker.underscoredone.com bimi-checker.underscoredone.com
q 65

Checks one or more domains to see whether they are set up to show a brand logo next to emails in Gmail, Apple Mail, and Yahoo. It looks up the BIMI settings the domain has published, checks the logo file follows the required format, checks …

paid API x402
$1.69 · 30d 164 tx
sovereign.lonestaroracle.xyz sovereign.lonestaroracle.xyz
q 65

Per-country sovereign economic / default-risk score (?country=<name or ISO3>)

paid API x402
$50.27 · 30d 759 tx
402oracle.com 402oracle.com
q 65

Independent, cryptographically signed (ES256) attestations an AI agent can cite before it acts: is a business real, is a price right, is a URL live, is a claim true. Pay per call in USDC over x402 — no accounts, no API keys. Free unsigned M…

paid API offline x402
$2.70 · 30d 36 tx
seo.cyberwarex.com seo.cyberwarex.com
q 65

On-page SEO audit for any live URL. Returns a 0-100 SEO score plus the raw signals behind it: title tag and meta description with their lengths, canonical URL, robots directives, the full H1-H3 heading map, image alt-text coverage, Open Gra…

paid API x402
$11.97 · 30d 1,715 tx
bazaar.fronesislabs.com bazaar.fronesislabs.com
q 65

Low-latency pre-action screening for routine agent responses and tool-call decisions.

paid API x402
$1.85 · 30d 83 tx
google-patents.use.x402atlas.com google-patents.use.x402atlas.com
q 65

Google Patents search — find patents by technology, inventor or assignee with date, country, legal-status and classification filters; clean JSON with titles, snippets, dates, owners, PDFs and patent IDs.

paid API x402
$12.29 · 30d 462 tx
llm.gedx402.com llm.gedx402.com
q 65

Frontier chat on QWEN3 30B A3b FP8 (@cf/qwen/qwen3-30b-a3b-fp8). POST messages[] for reasoning-heavy agent workloads; dynamic token pricing. Hero: GET /heroes/frontier-llm. Tiers: /v1/chat/reasoning, /v1/chat/code, /v1/chat/agent, /v1/chat/…

paid API x402
$4.13 · 30d 283 tx
payload402.edgebytenet.workers.dev payload402.edgebytenet.workers.dev
q 65

Convert amounts between ISO 4217 currencies using ECB daily reference rates (Frankfurter). Use for invoices, travel budgets, expense reports, and shopping comparisons when you need a verifiable rate instead of LLM arithmetic. Not live trada…

paid API x402
$0.05 · 30d 20 tx
toolsmith-api.dassad10.workers.dev toolsmith-api.dassad10.workers.dev
q 65

Full plain-text transcript of a YouTube video, de-duplicated and cleaned from the captions. Accepts a video id or URL. Ideal for feeding video content to LLMs. JSON response. $0.01 USDC per call, pay via x402, no API key.

paid API x402
$1.46 · 30d 116 tx
tenderdelta-preview.mooncakemonkey1.workers.dev tenderdelta-preview.mooncakemonkey1.workers.dev
q 65

Search explainably qualified EU solar and battery tenders from an explicitly dated TED snapshot

paid API x402
$0.06 · 30d 6 tx
keyronne.com keyronne.com
q 65

Repair malformed JSON text into valid parsed JSON: markdown code fences, single quotes, smart quotes, unquoted keys, trailing commas, comments, Python literals (True/None), raw newlines in strings, and truncated output (auto-closes strings,…

paid API x402
$0.22 · 30d 66 tx
x402.tradesnack.com x402.tradesnack.com
q 65

Multi-indicator technical analysis (SMA/EMA crosses, Bollinger, RSI, candlestick patterns, support/resistance, trendlines, experimental Elliott Wave) for any crypto pair.

paid API x402
$0.05 · 30d 5 tx
trader.rigoblock.com trader.rigoblock.com
q 65

Rigoblock DeFi tool discovery. Returns the full catalog with JSON schemas, categories, and access requirements for all direct-invocation tools.

paid API x402
$0.02 · 30d 7 tx
agent.atinamos.co.uk agent.atinamos.co.uk
q 65

Deterministic JSON validation and conservative repair for AI-agent payloads. Repairs unquoted object keys, single-quoted strings, trailing commas, Markdown code fences, UTF-8 BOMs and JSON-compatible Python literals, including nested or rep…

paid API x402
$0.09 · 30d 9 tx
x402.jmthomasofficial.com x402.jmthomasofficial.com
q 65

Company intelligence lookup: resolve a US-listed company ticker through the SEC EDGAR company ticker dataset. Returns CIK, ticker, and registrant name for company research, SEC filing discovery, and equity due diligence.

paid API x402
$0.95 · 30d 42 tx
lion-x402-bible.lionmaster-operations.workers.dev lion-x402-bible.lionmaster-operations.workers.dev
q 65

CPG product data + shop prices by barcode or name. Open Food Facts + Open Prices. Ed25519 attested.

paid API x402
$4.14 · 30d 264 tx
insider-radar-agent.insider-radar-agent.workers.dev insider-radar-agent.insider-radar-agent.workers.dev
q 65

Ranked bot leaderboard with eff_n and the luck-ceiling honesty note

paid API x402
$0.08 · 30d 8 tx
safefetch.schemasure.com safefetch.schemasure.com
q 65

Fetch a public web page and return clean Markdown with stable citation anchors, a content hash, and a retrieval timestamp — plus evidence of hidden text, invisible Unicode, and prompt-injection attempts found in the page. Strict SSRF protec…

paid API x402
$5.51 · 30d 453 tx
kevinhoff.com kevinhoff.com
q 65

X Preflight: read a draft post against X's open-sourced ranking code. Returns what is already settled before you post, whether it enters the pool strangers are drawn from, how long it stays retrievable, which filters delete it, and which ga…

paid API x402
$0.18 · 30d 18 tx
http-status-checker.underscoredone.com http-status-checker.underscoredone.com
q 65

Give this API a list of up to 10 web addresses and it will visit each one to tell you whether it is working, broken, or redirecting visitors somewhere else. You get back the exact status number (like 200 for OK, 404 for not found, 500 for s…

paid API x402
$1.69 · 30d 164 tx
leetspeak-translator.underscoredone.com leetspeak-translator.underscoredone.com
q 65

Takes a piece of text and either turns it into leetspeak (swapping some letters for numbers and symbols, like 'hello' becoming 'h3110') or turns leetspeak back into normal, easy-to-read words. The same words always produce the same result, …

paid API x402
$1.69 · 30d 164 tx
solar.nsgoods.org solar.nsgoods.org
q 65

Signed plug-in solar legality record for one US state. Free preview: GET /solar-legality/preview A missing or unknown state returns 400 or 404; you are never charged for an error.

paid API x402
$1.67 · 30d 164 tx
filedge.io filedge.io
q 65

Parse SEC filings (10-Q, 10-K, 8-K, Form 4) and earnings transcripts into structured JSON. Supports EDGAR by ticker or direct URL.

paid API x402
$0.35 · 30d 7 tx
asn-lookup.underscoredone.com asn-lookup.underscoredone.com
q 65

Given an internet address (IP) or a network identification number (ASN), this tool returns who operates that piece of the internet: the network number, the owner's name, the country it's registered in, the regional registry that manages it,…

paid API x402
$1.69 · 30d 164 tx
trust-agent.io trust-agent.io
q 65

ERC-8004 agent reputation with sybil filtering: reviewers are clustered by who funded them and each cluster counts once, so reviewers paid for from one wallet count as one vote. Returns feedback and reviewer counts, independent clusters, th…

paid API x402
$24.50 · 30d 39 tx
dns-whois-lookup.underscoredone.com dns-whois-lookup.underscoredone.com
q 65

Send up to 10 domain names and get back every DNS record type (A, AAAA, MX, CNAME, TXT, NS, PTR, SOA, SRV, CAA, NAPTR, DS, TLSA) plus the full WHOIS registration profile (registrar, dates, contacts, status, nameservers) for each one. URLs a…

paid API x402
$1.69 · 30d 164 tx
api.polym.uk api.polym.uk
q 65

UMA resolution dispute and flip base rates by category and criterion clarity; descriptive historical compatibility, not a market-specific forecast. BEFORE YOU PAY: free substitute https://dash.polym.uk/uma-base-rates.json and https://dash.p…

paid API x402
$2.15 · 30d 43 tx
x402.dailyelo.com x402.dailyelo.com
q 65

Live reliability feed of x402 endpoints on Base: which services are up, return a valid 402 envelope, and how fast — free-probed across the CDP Bazaar catalog. A real share of listed endpoints are broken/misconfigured; poll ?since=<unix> (or…

paid API x402
$1.14 · 30d 90 tx
x402-seller-pmlm.onrender.com x402-seller-pmlm.onrender.com
q 65

Research brief with citations: web research on any question or topic in one call. Use to summarize a topic, get a Wikipedia summary, or answer with sources before writing or deciding. Pass q. Returns a direct answer, key points with citatio…

paid API x402
$0.23 · 30d 38 tx
regime.nsgoods.org regime.nsgoods.org
q 65

CMC regime classification + strategy spec (USDC pay-per-call). Free preview: GET /regime/preview A bad or unsupported id returns 400; upstream failure returns 503; you are never charged for an error.

paid API x402
$1.67 · 30d 164 tx
hazard.lonestaroracle.xyz hazard.lonestaroracle.xyz
q 65

Global (or per-country) natural-hazard / disaster alert signal (optional ?country=)

paid API x402
$50.27 · 30d 759 tx
vape-x402.vapex402.workers.dev vape-x402.vapex402.workers.dev
q 65

VAPE dex_volumes — DEX trading volume on a chain by venue, each with its logo (default Base) — real trading activity across the chain's exchanges.

paid API x402
$42.16 · 30d 3,755 tx