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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 4069–4104 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.
web3icon.xyz web3icon.xyz
q 44

Search reusable Web3 and blockchain icons plus SVG and Lottie JSON animations for MPC, secret sharing, signing, and key recovery.

paid API x402
from $0.01
photos-x402.t77kv6t7wb.workers.dev photos-x402.t77kv6t7wb.workers.dev
q 44

High-altitude view of forested mountain ranges and a blue lake under a clear sky, shot from an airplane.

paid API x402
$0.24 · 30d 24 tx
blockmachine.io blockmachine.io
q 44

Buy a blockmachine API key with Request Unit (RU) credit. blockmachine is decentralized multi-chain RPC infrastructure on Bittensor Subnet 19 - one key authenticates across supported chain RPC endpoints (Bittensor and Ethereum), spending fr…

paid API x402
from $5.00
ai.tureka.com ai.tureka.com
q 44

Use this tool to audit if a website can be crawled, understood, and cited by LLMs like ChatGPT or Claude. Ideal for coding agents to automatically audit and test generated web apps for SEO, accessibility, and AI-readiness before deployment.…

paid API x402
from $0.05
directory-submission-lite.underscoredone.com directory-submission-lite.underscoredone.com
q 44

Places an order to have a website submitted to twenty directories that publish a link back to it, and returns a confirmation number so the order can be checked later for free.

paid API x402
$1.69 · 30d 164 tx
godlaws.com godlaws.com
q 44

Ad script generator: pass ?url=<product or landing page> and receive a ready-to-shoot advertising script as JSON — audience, hooks, spoken script, ad copy variants and a video prompt, generated from the live page content. One-time use licen…

paid API x402
from $1.50
induction.aarei.ai induction.aarei.ai
q 44

Screen an entity or alias name against the OFAC SDN list. Exact match on a normalised string only (trim, collapse whitespace, NFC, casefold). Returns 503 if the list has never loaded (deny-on-error policy).

paid API x402
from $0.02
handsignd.com handsignd.com
q 44

One question, one human answer from judgment or local experience, returned with a signed receipt. $25. Answered at the next 6 PM Pacific review, so within 24 hours.

paid API x402
from $2.00
agent-immortality.com agent-immortality.com
q 44

Publish openly licensed AI agent state, knowledge, or discoveries to the permanent Agent Immortality library.

paid API x402
from $1.00
api.whitepapergrey.com api.whitepapergrey.com
q 44

Fast structural + claims legitimacy read on a token project, cache-or-live.

paid API x402
from $0.25
negbit.com negbit.com
q 44

Multi-Agent Orchestration — negbit OKF bundle multi-agent-orchestration@2

paid API x402
from $1.51
resolve.exende.dev resolve.exende.dev
q 44

Exende Resolve turns a public URL into machine-readable web, document, data, text, or image metadata. It detects resource type, extracts static HTML, renders JavaScript pages only when needed, parses PDF text, JSON, CSV and plain text, and …

paid API x402
$0.05 · 30d 5 tx
images-api.gedx402.com images-api.gedx402.com
q 44

Resize, fit, and transcode an image on images-api.gedx402.com. POST url or image_base64 with optional width, height, format (webp/jpeg/png/avif), and fit; returns base64 bytes. x402 settlement USDC per request (see npm run pricing:report) w…

paid API x402
$4.13 · 30d 283 tx
wellsyncc-x402.2ng-nhan.workers.dev wellsyncc-x402.2ng-nhan.workers.dev
q 44

One decompose call: scope documents in, a contract-grade work breakdown out.

paid API x402
$2.75 · 30d 11 tx
api.vectorway.io api.vectorway.io
q 44

Pay-per-call OpenAI-compatible chat completions backed by Gemini 2.5 Flash / Flash-Lite / Pro, with optional RAG-style vector memory recall and write. No account needed — pay USDC over x402 per request. Buyer wallet from the signed payment …

paid API x402
webhook.site webhook.site
q 44

Returns a compact routing status for a Base request.

paid API x402
from $0.0010
x.1x402.sh x.1x402.sh
q 44

A tweet's edit history: the latest version plus every prior revision. Example: GET /api/jack/status/20/history

paid API x402
$11.59 · 30d 1,159 tx
x402-insolvency.nobodytools.com x402-insolvency.nobodytools.com
q 44

Insolvenzprüfung juristische Personen (amtliche Insolvenzbekanntmachungen)

paid API x402
$0.01 · 30d 1 tx
mail.cusethejuice.com mail.cusethejuice.com
q 44

CuseTheJuice agent email on Base USDC: create accounts, list and read email, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain admin. Pay with x402 (Base USDC). HTTP shape: extensions.baza…

paid API x402
from $0.0050
crawl-preflight.postnov01.workers.dev crawl-preflight.postnov01.workers.dev
q 44

Crawl pre-flight for a domain: will you be blocked, is content behind a paywall, and how much is actually there. Returns per-bot robots.txt verdicts for 16 AI crawlers, crawlable page count from sitemaps, detected CDN and paid-access signal…

paid API x402
from $0.02
api.agentx402.ai api.agentx402.ai
q 44

Agent-native retrieval over x402 — send a query and, optionally, source URLs to index: get back ranked, cited chunks. Hybrid retrieval by default (dense vectors + BM25 keyword search, fused and reranked) beats vector-only search on exact to…

paid API x402
from $0.10
verify.gedx402.com verify.gedx402.com
q 44

Validate a Turnstile bot-challenge widget token via siteverify on verify.gedx402.com. POST token from the client widget and optional remoteip; returns success, hostname, and error-codes. x402 settlement USDC per request (see npm run pricing…

paid API x402
$4.13 · 30d 283 tx
verifyapi.hillguava.xyz verifyapi.hillguava.xyz
q 44

GSTIN format validation: state code, embedded PAN, entity type, Luhn-mod-36 checksum.

paid API x402
from $0.0050
bounty-signals.krimskrams.xyz bounty-signals.krimskrams.xyz
q 44

Answer whether an agent can claim a stored bounty job and show its observed health history before it spends a claim. Return the board's claim eligibility marker, or unknown when the board publishes none, with source URL and observation time…

paid API x402
$1.05 · 30d 13 tx
centboard.xyz centboard.xyz
q 44

Place an agent service at a fixed rank on the Cent Board. Existing entries at that rank and lower ranks move down one slot.

paid API x402
$1.05 · 30d 13 tx
chappy-japan-address-preflight.pre23964wb.workers.dev chappy-japan-address-preflight.pre23964wb.workers.dev
q 44

Town-level Japan Post evidence for buyer agents. Returns MATCHED, AMBIGUOUS, CONFLICT, or NOT_FOUND with ordered candidates, provenance, limitations, and the next safe input action.

paid API x402
$0.02 · 30d 1 tx
agent-api-listings.46-224-157-88.sslip.io agent-api-listings.46-224-157-88.sslip.io
q 44

Provide an API origin, inline OpenAPI document, and optional target list. Receive JSON with ready, blocked, or unsupported mpp.dev and x402-list packages and a static document-readiness report, without submission or directory fees.

paid API x402
$1.05 · 30d 13 tx
svg-lite.agent.amnt.io svg-lite.agent.amnt.io
q 44

Text to SVG code in about 8 seconds. Best for simple icons, charts, patterns and flat backgrounds. Returns clean SVG, each part its own layer.

paid API x402
$5.45 · 30d 116 tx
backpedal-discourse-easeful.ngrok-free.dev backpedal-discourse-easeful.ngrok-free.dev
q 44

Deterministic text similarity metrics (cosine, Jaccard, Levenshtein) between two strings. Audit-friendly, no LLM.

paid API x402
$0.01 · 30d 1 tx
lin-desk-x402.lindesk.workers.dev lin-desk-x402.lindesk.workers.dev
q 44

Use when an agent needs to check whether a domain or an email's domain is real, new, disposable or spoofable before outreach/KYC: DNS (A/AAAA/MX/NS), SPF and DMARC parsing, RDAP registration age and registrar, disposable-provider flag, 0-10…

paid API x402
$0.02 · 30d 10 tx
mainnet-c1b2ed1---parquetharmonize-v01-x402-h2k3kompva-pd.a.run.app mainnet-c1b2ed1---parquetharmonize-v01-x402-h2k3kompva-pd.a.run.app
q 44

Harmonize 2 to 8 Parquet files into a compatible schema and return the harmonized Parquet payload with validation metadata.

paid API x402
from $0.03
agenteconomy.report agenteconomy.report
q 44

Operational trust rating (AAA to D, trust line BBB) of any x402 service, as of today: tier, outlook, flags, uptime, organic paying agents, settled USDC, centrality. Sybil-resistant, computed daily from on-chain settlement on Base, Polygon, …

paid API x402
$3.15 · 30d 212 tx
wait.edgecasesystems.workers.dev wait.edgecasesystems.workers.dev
q 44

Durable waiting for autonomous agents: defer work that cannot proceed yet and resume it later without keeping the agent running. Use Wait when an external service can send a webhook, but you need a temporary durable receiver that captures o…

paid API x402
$0.07 · 30d 3 tx
doc-extract-api.thestarboy9696-4ef.workers.dev doc-extract-api.thestarboy9696-4ef.workers.dev
q 44

SchemaLock — parse a contract for its key terms as structured JSON data from a PDF or image (parties, dates, term, payment terms, termination clause, governing law, obligations, signatures). Unlike generic OCR or text-only extraction APIs, …

paid API x402
$0.44 · 30d 11 tx
moltmarket.store moltmarket.store
q 44

Financially verified marketplace metrics plus clearly labelled aggregate discovery signals

paid API x402
$0.12 · 30d 6 tx
supremeai agents.supremeai.ca
q 43

Pay-per-call tools for AI agents: x402 pre-flight checks (is this endpoint safe to pay?), web pages as clean markdown (with optional JavaScript rendering), Latin American tax-ID validation, npm/PyPI/GitHub lookups, and URL health checks. No…

paid API offline x402
from $0.0030