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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 548 AI 305 Verification 254 Finance 118 Blockchain 95 Other 51 Content 44 Web 31 Media 24 Compute 22 DevTools 21 Travel 20
sort Quality Revenue (30d) Recently updated Name
Showing 6049–6084 of 8,858
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.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
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
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
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
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
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
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
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
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
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
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
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
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-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
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
$0.78 · 30d 58 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
$52.78 · 30d 4,809 tx
brokenkey-api-link-tau.vercel.app brokenkey-api-link-tau.vercel.app
q 65

Purchase and download the Broken Key Remapper software (one-time license).

paid API x402
$0.07 · 30d 26 tx
dripstack.com dripstack.com
q 65

Paid JSON for one Substack-backed newsletter, blog, or podcast post: synthesized summary (`synthesizedSummary`), metadata, and identifiers for financial analysis. Path params are `publicationSlug` and `postSlug`. Returns 503 until summary e…

paid API x402
$57.90 · 30d 38 tx
api.ozdreamtools.de api.ozdreamtools.de
q 65

Audits a website for AI agent and AI crawler readiness from caller-supplied inputs: robots.txt, HTML, headers, llms.txt, sitemap lastmod, /.well-known. Names the policy per AI token (GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-Se…

paid API x402
$1.01 · 30d 25 tx
coinslot.dev coinslot.dev
q 65

Check an email address: RFC syntax, live MX records via DNS-over-HTTPS, and disposable-domain screening. POST { email } or { emails: [...] } (max 20).

paid API x402
$0.03 · 30d 11 tx
aiagentoracle.ai aiagentoracle.ai
q 65

AgentOracle: list real-time on-chain crypto tokens sorted by market cap, with chain / min-liquidity / min-24h-volume / min-market-cap filters and limit+offset pagination. Each row includes price, 24h volume, market cap, liquidity, 24h price…

paid API x402
$0.34 · 30d 30 tx
x402-solvers.onrender.com x402-solvers.onrender.com
q 65

Detect whether an arbitrage opportunity exists in a set of token exchange rates (multi-pool negative-cycle scan). Cheap boolean + magnitude signal for trading agents. POST a swap-rate graph, get back whether a profitable cycle exists and ho…

paid API x402
$0.01 · 30d 6 tx
www.celerapi.com www.celerapi.com
q 65

Search authoritative company registries by company name to resolve candidate legal entities and registration identifiers. Currently supports the United Kingdom (GB) and Norway (NO), with expanding jurisdiction coverage. Results are public-r…

paid API x402
$0.04 · 30d 7 tx
x402-echo-service.onrender.com x402-echo-service.onrender.com
q 65

Current gas conditions on Base. POST {} and receive the legacy gas price and the EIP-1559 base fee of the latest block, in wei and gwei. Useful for agents deciding whether to transact now or wait.

paid API x402
$0.07 · 30d 20 tx
hackernews-data.underscoredone.com hackernews-data.underscoredone.com
q 65

This tool reads live information from Hacker News, a popular website where people share and discuss technology news. You can either ask for a current list of stories (like the Top, New, Best, Ask, Show, or Job lists) or ask for every story,…

paid API x402
$1.69 · 30d 164 tx
x402.problocks.io x402.problocks.io
q 65

Verify payment connectivity with USDC on Base. Returns a JSON pong and UTC timestamp after settlement.

paid API x402
$0.01 · 30d 6 tx
eagle.quickai.build eagle.quickai.build
q 65

Eagle Eye v1.0.0 — U.S. enterprise-grade wallet compliance screening. OFAC SDN + Circle USDC blacklist on Base. Signed audit receipts. Certified single-address check.

paid API x402
$0.32 · 30d 18 tx
holidays.use.x402atlas.com holidays.use.x402atlas.com
q 65

Holiday date check by country or subdivision — determine whether one ISO date is an official public holiday.

paid API x402
$12.29 · 30d 462 tx