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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 2773–2808 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.
base.46-225-15-169.sslip.io base.46-225-15-169.sslip.io
q 80

Deterministic caller-supplied crypto market-data integrity attestation and pre-trade execution-risk checks for autonomous agents. No order placement and no market-data resale.

paid API verification x402
$0.06 · 30d 5 tx
osha-search.krimskrams.xyz osha-search.krimskrams.xyz
q 80

Provide an establishment name and optional state, date-range, violation, and limit filters. Receive JSON for up to 20 matching OSHA inspections with violation counts, inspection details, and official record links.

paid API data x402
$0.04 · 30d 2 tx
api.clinkforge.com api.clinkforge.com
q 80

Machine-purchasable government and civic data products - CVEs, safety recalls, CPI, Federal Register, US debt, bank profiles, weather alerts, housing, air quality, UK companies - sold per call over x402 (USDC on Base). Every response carrie…

paid API data x402
$0.01 · 30d 10 tx
GSC AI Agent CPG Fleet - APAC gsc-a2a.ai
q 80

GSC AI Agent CPG Fleet - APAC — fleet root on gsc-a2a.ai (AU-ECO-10060, Microsoft Azure Australia East; serves Asia-Pacific). Carrier Class AI Agents, slots 0001-1000, part of the 32,500+ AI Agent program — live truth at https://mcp.gsc-fle…

A2A offline signed ✓
Agentic Insights Consulting Agent preview.agenticinsights.com
q 80

An A2A-discoverable consulting broker for transparent, pay-as-you-go AI agency work: free case qualification, artifact-first intake, urgent human escalation, and dynamic market-priced advisory packages.

paid API offline x402
x402.pkgproof.net x402.pkgproof.net
q 80

pkgproof is a package-verification oracle for AI coding agents. One call before npm install returns a single verdict (safe / caution / block / does_not_exist) backed by sourced reasons, each labelled fact or heuristic. It covers hallucinate…

paid API verification x402
$0.10 · 30d 2 tx
safetyincidents.org safetyincidents.org
q 80

Federal OSHA severe-injury records, single incident lookups, and employer aggregate safety totals. Cleaned and entity-resolved. Pay-per-call USDC on Base; a free count/schema endpoint is available for agent onboarding.

paid API data x402
$0.08 · 30d 8 tx
trustfetch.duckdns.org trustfetch.duckdns.org
q 80

Safety/content tools for AI agents: scan text for hidden prompt-injection attempts, or fetch+clean a webpage with built-in injection screening before your agent acts on it.

paid API verification x402
$0.51 · 30d 34 tx
qr.wdh.sh qr.wdh.sh
q 80

QR code generation for agents, paid per call in USDC on Base via x402.

paid API other x402
$0.34 · 30d 101 tx
makespdf.com makespdf.com
q 80

Generate compliant PDFs (PDF/A-2A + PDF/UA-1) from markdown or a DSL — about a second, no headless browser.

paid API content x402
$0.01 · 30d 1 tx
Psychiatry for Children childpsychiatry.ai
q 80

Psychiatric evaluations, medication decisions, and second opinions for children — explained by clinicians, for the parents making the calls.

A2A offline
Agent Trust Gateway agent-trust-gateway.port402.com
q 80

ERC-8004 trust scoring and validation for the agentic economy. Query agent profiles, compute trust scores, and validate endpoints.

A2A offline verification a2a_x402
pigeon-ai.space pigeon-ai.space
q 80

Agent-to-agent message relay on x402 (Base USDC).

paid API data x402
Buddy MCP buddy.works
q 80

Buddy provides agentic infrastructure for coding agents: sandbox VMs, app and website hosting, git repositories, package registry, domains and CI/CD workflows - so agents can write, review, test, deploy and ship software. This agent exposes…

A2A offline
x402-api-catalog.onrender.com x402-api-catalog.onrender.com
q 80

Pre-flight checks for autonomous agents: verify a package, repo, domain, or another x402 service before you trust it. Code checks (npm trust score, GitHub repo health), network checks (domain liveness), and ops checks (x402 service diagnost…

paid API verification x402
$24.48 · 30d 25 tx
Anxiety in Children childanxiety.ai
q 80

Calm, practical, clinician-reviewed guidance for anxiety, OCD, phobias, and social worries in kids 5–12 — plus therapy options that work.

A2A offline
Gardenpatch Growth Coaches gardenpatch.xyz
q 80

Paid, agent-callable growth coaches. 7 coaches, each answering from its own discipline. Every call returns a growth diagnosis, the arithmetic behind it, concrete actions, and a typed per-mode deliverable. No signup, no API key: an unpaid PO…

paid API offline ai x402
search.cyberwarex.com search.cyberwarex.com
q 80

Web search API for agents

paid API data x402
$11.97 · 30d 1,715 tx
SpyFu www.spyfu.com
q 80

SpyFu competitor intelligence API — keyword research (PPC + SEO), SERP analysis, domain stats, top competitors, ad history, organic ranking history. Unified endpoint across 8 SpyFu sub-APIs.

paid API data x402
from $0.01
Groq groq.com
q 80

Ultra-fast LLM inference (Llama, DeepSeek, Gemma)

paid API inference x402
from $0.0010
Google Gemini ai.google.dev
q 80

Google Gemini models via x402-enabled gateways and agent wrappers.

paid API inference x402
from $0.0010
Sponge paysponge.com
q 80

Multi-service API gateway — access Perplexity, fal.ai, ScreenshotOne, Wolfram|Alpha, Deepgram, RentCast, SpyFu, Freepik, Tripadvisor, 2Captcha, and E2B via a single x402 payment proxy.

paid API infrastructure x402
from $0.01
Hunter hunter.io
q 80

Email verification and contact enrichment

paid API data x402
from $0.03
StableMerch stablemerch.dev
q 80

Order custom t-shirts and mugs from images

paid API other x402
from $50.00
Cambrian cambrian.network
q 80

Onchain + offchain financial intelligence

paid API data x402
from $0.05
RentCast developers.rentcast.io
q 80

Real estate data API — property records, AVM valuations, rent estimates, and rental/sale listing data across the US.

paid API data x402
from $0.01
fal.ai fal.ai
q 80

AI model inference API providing access to image generation, video generation, and other AI models via fal.ai infrastructure.

paid API media x402
from $0.01
Hyperbrowser hyperbrowser.ai
q 80

Headless browser and web scraping - AI-native

paid API search x402
from $0.0010
2Captcha 2captcha.com
q 80

CAPTCHA solving service API — programmatically solve reCAPTCHA, hCaptcha, image CAPTCHAs, and more using human workers or AI.

paid API infrastructure x402
from $0.01
StablePhone stablephone.dev
q 80

AI phone calls + dedicated numbers

paid API social x402
$42.96 · 30d 85 tx
Venice venice.ai
q 80

Privacy-focused AI inference — text, image, audio, video, embeddings via OpenAI-compatible API; hosts models from OpenAI, Anthropic, Google Gemini, xAI, DeepSeek, Mistral, Qwen, GLM, Llama, Kimi, and more.

paid API inference x402
from $0.0010
Magnific www.freepik.com
q 80

Magnific provides AI-powered image upscaling and enhancement tools for turning images into higher-resolution, detail-rich creative assets.

paid API media x402
from $0.01
Melis Notify notify.melis.ai
q 80

Pay-per-email notification ($0.005/email)

paid API social x402
from $0.0050
Gloria AI api.itsgloria.ai
q 80

Real-time customizable news

paid API data x402
$1.26 · 30d 21 tx
SLAMai api.slamai.dev
q 80

Smart money intelligence

paid API data x402
$21084.70 · 30d 45 tx
StableUpload stableupload.dev
q 80

File hosting + static sites (6mo TTL)

paid API storage x402
$11.23 · 30d 473 tx