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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 5869–5904 of 8,863
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.
thevaultreport.com thevaultreport.com
q 65

CFTC Commitments of Traders — weekly disaggregated futures positioning by commodity: managed-money long/short/net, producer-merchant, swap-dealer, and open interest. 20-year history, cleaned and canonicalized from the CFTC feed. Filter by c…

paid API x402
$0.28 · 30d 23 tx
verify.clearsigned.com verify.clearsigned.com
q 65

Clearsigned — the trust layer with no stake in the outcome. Submit {claim, evidence[]}, receive an Ed25519-SIGNED, evidence-bearing receipt (verify offline against GET /pubkey; every receipt is chained in the public ledger at GET /ledger/ve…

paid API x402
$0.13 · 30d 9 tx
paddock.finance paddock.finance
q 65

Agent payments have no chargeback. Paddock is pre-payment verification for AI agents. get_liveness reports whether a seller's domain answered at the nightly probe over the last seven days, with latency and sample counts.

paid API x402
$4.50 · 30d 28 tx
api.tag-per-track.cloud api.tag-per-track.cloud
q 65

Tag-per-Track: Agentic-First Musical Audio Analysis API. Extracts BPM, Key, Mood, Genres and Instruments from audio URLs.

paid API x402
$1.75 · 30d 21 tx
hosaka-agents.vercel.app hosaka-agents.vercel.app
q 65

Use when you have a company domain and need to know what the company is before spending more. Returns the company name and site title, domain age, registrar, mail provider, DNS provider, DMARC and HTTPS status, and a count of the third-part…

paid API x402
$52.40 · 30d 11 tx
api.stakedbots.com api.stakedbots.com
q 65

Leaderboard / ranking of autonomous AI trading bots, ordered by verifiable alpha vs a HODL 50/50 BTC+ETH benchmark. Each bot stakes USDC and pre-commits its strategy on-chain, so its track record and PnL are provable, not self-reported — bu…

paid API x402
$0.74 · 30d 15 tx
stablepeopledata.dev stablepeopledata.dev
q 65

PDL Company Enrich - Enrich a company record with firmographics, industry codes, funding, and social profiles. Supports lookup by name, website, ticker, LinkedIn, or PDL ID.

paid API x402
$18.98 · 30d 124 tx
bazaar-catalog.vercel.app bazaar-catalog.vercel.app
q 65

Convert Gregorian dates to Hijri (Umm al-Qura calendar) and back. Returns day/month/year, Arabic and English month names, and a formatted Arabic date string. Essential for agents handling Islamic events, Ramadan, Hajj seasons, or Arabic doc…

paid API x402
$0.26 · 30d 26 tx
wallet-intelligence-three.vercel.app wallet-intelligence-three.vercel.app
q 65

WalletGuard preflights wallet and transaction execution across major EVM chains, returning balances, activity, approvals, known labels, and a proceed/caution/block recommendation with evidence.

paid API x402
$0.61 · 30d 23 tx
agents.machina.gg agents.machina.gg
q 65

Resolves a provider id (api_football, sportradar, opta, entain, espn) or canonical machina URN to the entity it identifies, with all cross-provider ids attached.

paid API x402
$7.95 · 30d 445 tx
clink-lithium-vault.fly.dev clink-lithium-vault.fly.dev
q 65

X/Twitter search for AI agents - live tweets via advanced search: from:user, exact phrases, #hashtags, min_faves, lang, since/until dates. Returns up to 20 newest matches with author, followers, likes, retweets, views, URL. Crypto, stocks, …

paid API x402
$9.42 · 30d 366 tx
x402-defi-signals.onrender.com x402-defi-signals.onrender.com
q 65

One-call market snapshot: BTC/ETH/SOL spot prices with 24h change plus the Crypto Fear & Greed index. The cheapest way for an agent to establish market context.

paid API x402
$0.13 · 30d 43 tx
api2ls.com api2ls.com
q 65

Get live EVM gas pricing with EIP-1559 breakdown and USD cost estimates

paid API x402
$0.11 · 30d 11 tx
api.xona-agent.com api.xona-agent.com
q 65

ElevenLabs text-to-speech: convert text to speech (MP3) (Base Mainnet).

paid API x402
$2.99 · 30d 55 tx
api.lastlookdata.com api.lastlookdata.com
q 65

LastLook Data — current 30-year US Treasury yield (DGS30). Alias for /api/current?id=DGS30.

paid API x402
$0.20 · 30d 15 tx
gamemaxxing.baes.so gamemaxxing.baes.so
q 65

Search GAMEMAXXING's video games and gaming knowledge base for game concepts across game design, game business, game culture, and gaming history, then return ranked JSON hits with full content first and source URLs second.

paid API x402
$3376.64 · 30d 52 tx
sftunes.com sftunes.com
q 65

SFtunes catalog for agents: index of public mixtapes and public Top 10 lists, or one item with liner notes and music-service links via ?id=<uuid> (tape) or ?id=top10-<handle> (a person's Top 10 + Side B).

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

Healthcare text de-identification engine (demo endpoint — SYNTHETIC/TEST DATA ONLY, never send real PHI; nothing is stored). Strips names, DOBs, member/claim IDs, phones, emails, addresses, SSNs; dates become a derived interval timeline (se…

paid API x402
$0.05 · 30d 5 tx
x402-market.kore-app.workers.dev x402-market.kore-app.workers.dev
q 65

Aggregated crypto market snapshot: prices, Fear & Greed, DeFi TVL, dominance, top stable yields.

paid API x402
$1.21 · 30d 34 tx
risk.yo.xyz risk.yo.xyz
q 65

Graph schema definition — entry point for agents to discover available data

paid API x402
$0.02 · 30d 19 tx
api.obeliskapp.io api.obeliskapp.io
q 65

Search Obelisk's curated spy ad catalog when you need competitor creative examples by keyword, brand, or platform. Returns JSON ad cards. Use limit=1 for a cheap first call.

paid API x402
$0.07 · 30d 7 tx
redlynr.com redlynr.com
q 65

Agent guardrail decision engine. Call once before every agent action; returns a single decision — proceed, slow down (with a reason and wait time), or stop — based on cost budget, chain depth, step cap and retry budget, and request volume p…

paid API x402
$0.01 · 30d 7 tx
stableflare.dev stableflare.dev
q 65

Capture a screenshot of any URL or HTML. Returns a PNG or JPEG image. Supports full-page, element selection, custom viewport.

paid API x402
$10.16 · 30d 133 tx
api.munition.io api.munition.io
q 65

Munition Upload: x402-paid temporary file hosting for AI agents. Buy a presigned upload slot, upload one local file or generated artifact up to 10 MB, and get a public non-guessable files.munition.io link retained for 7 days. Useful for PDF…

paid API x402
$3.02 · 30d 135 tx
stackbill.app stackbill.app
q 65

Generate a finished, professional invoice PDF from JSON — recipient and line items in, a ready-to-send application/pdf out. Layouts: standard, legal, creative. Totals and tax are computed server-side so the numbers always add up. First paym…

paid API x402
$2.38 · 30d 14 tx
api-onchain.optimai.network api-onchain.optimai.network
q 65

OptimAI Search: an agent-ready decentralized search API powered by OptimAI Network nodes. Ask a natural-language question and get real-time, citation-backed search results across web, social, and crypto data.

paid API x402
$0.04 · 30d 5 tx
api.resetparatodos.com api.resetparatodos.com
q 65

Verify a UK company by its Companies House number (e.g. 00445790) or by name against the official UK register (Companies House). Returns the company profile: registered name, company status (active/dissolved/liquidation/…), company type, in…

paid API x402
$0.09 · 30d 3 tx
scorestatus.dev scorestatus.dev
q 65

Buy a live status line install for a team. Returns the client script file(s), config snippets, and step-by-step instructions for the installing agent to execute locally. The response token makes the line endpoint work and re-downloading the…

paid API x402
$0.15 · 30d 3 tx
x402-portdwell.nobodytools.com x402-portdwell.nobodytools.com
q 65

Port/chokepoint congestion index (daily & live, computed from public AIS)

paid API x402
$0.01 · 30d 1 tx
italian-company-check-fdsbh7p2bq-oc.a.run.app italian-company-check-fdsbh7p2bq-oc.a.run.app
q 65

Italian company registry lookup, verification and KYB pre-check using official/public sources: Registro Imprese / InfoCamere HVD, VIES, GLEIF, OpenCoesione and AGCM where applicable. Search by Codice Fiscale, Partita IVA or LEI. Returns nor…

paid API x402
$0.04 · 30d 2 tx
cryptoops.friczero.com cryptoops.friczero.com
q 65

[MCP: default] Pay-per-call MCP tool priced at 0.50 USDC (500000 atomic units) via x402 v2 on eip155:8453.

paid API x402
$1.01 · 30d 14 tx
merchant-audit.clankerceo.workers.dev merchant-audit.clankerceo.workers.dev
q 65

Is this API safe to pay? Audit any x402 merchant or paid endpoint BEFORE you send money. Answers whether a service is trustworthy, whether it is a scam or dead, and whether it will actually deliver. Probes the live endpoint for a valid HTTP…

paid API x402
$0.02 · 30d 12 tx
x402.cheetahsecurity.de x402.cheetahsecurity.de
q 65

On-chain trust/reputation score for a Base agent wallet

paid API x402
$0.06 · 30d 3 tx
zk.quickai.build zk.quickai.build
q 65

Quick ZK Auth v1.0.1 — Semaphore ZK wallet ownership on Base plus USDC balance attestation at snapshot block (not ZK-hidden balance in v1). ERC-8004 bundles with x402 payment binding.

paid API x402
$0.32 · 30d 18 tx
api.postagent.sh api.postagent.sh
q 65

Print and mail physical US letters (PDF, HTML, Markdown, DOCX, or image) and postcards via USPS, paid in USDC — with certified/registered proof options and standalone address verification at POST /v1/verify. Integration flow: POST /v1/docum…

paid API x402
from $1.24
secondlook.edgecasesystems.workers.dev secondlook.edgecasesystems.workers.dev
q 65

SecondLook provides an independent pre-action review of a proposed AI or agent action. It checks supplied facts, authority, constraints, reasoning, risks, and missing information before execution. Use it when an action is costly, external, …

paid API x402
$0.07 · 30d 3 tx