Skip to content

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 470 AI 226 Verification 141 Finance 114 Blockchain 84 Other 51 Content 44 Compute 20 Web 14 Search 13 Inference 9 Media 7
sort Quality Revenue (30d) Recently updated Name
Showing 2593–2628 of 4,717
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.
memory.fluidrack.com memory.fluidrack.com
q 65

Create namespace

paid API x402
$0.14 · 30d 14 tx
stability-ai.x402.paywithlocus.com stability-ai.x402.paywithlocus.com
q 65

Locus public pay-per-use API

paid API x402
$62.40 · 30d 35,811 tx
socialx402.com socialx402.com
q 65

Scrape Creators · TikTok — Profile

paid API x402
$0.18 · 30d 3 tx
coingecko.x402.paywithlocus.com coingecko.x402.paywithlocus.com
q 65

Locus public pay-per-use API

paid API x402
$62.40 · 30d 35,811 tx
pegproof.com pegproof.com
q 65

Current summary row for one Robinhood tokenized-stock token: reported total supply, treasury balance, UI multiplier, and known-impostor classification when the queried address matches a documented copycat. Identify by ticker or exact contra…

paid API x402
from $0.0020
api.gocreativeai.com api.gocreativeai.com
q 65

Returns natural AI voice audio URL from text prompt via Kokoro. Agents: voice bots, accessibility, narration, TTS. Keywords: text-to-speech, TTS API, voice generation, audio synthesis, AI voice. Keyless, pay-per-call USDC on Base/Solana, $0…

paid API x402
$0.14 · 30d 8 tx
omnicall.gocreativeai.com omnicall.gocreativeai.com
q 65

Multi-platform meta-search — web, GitHub, Hacker News, Stack Overflow, arXiv, academic papers, Wikipedia, news in ONE call. For research, dev-discovery, and knowledge agents. Unified search across 8 sources beats single-platform APIs. Keyle…

paid API x402
$0.14 · 30d 8 tx
x402-agent-pay.com x402-agent-pay.com
q 65

x402 Barter — open a cashless trade. Pay only the flat call fee; your good is escrowed, not sold for USDC.

paid API x402
$49.37 · 30d 287 tx
canary.digitalworkerapi.com canary.digitalworkerapi.com
q 65

A minimal x402 canary endpoint for machines to verify that they can discover, pay, and receive a valid response.

paid API x402
from $0.0020
api.lodestarindex.com api.lodestarindex.com
q 65

Lodestar Stamp receipt reads, one per business the shortlist finds

paid API x402
from $1.00
api.ambolt.dev api.ambolt.dev
q 65

Resolve a company name, website domain, registry number, LEI or VAT number to its official legal entity: registry, registry number, legal form, status, address, industry codes, size where published and LEI. Searches national registers (Norw…

paid API x402
from $0.0030
whale.memoryapi.org whale.memoryapi.org
q 65

Combined whale digest — billionaire 13F + top insider activity in one call.

paid API x402
$1.04 · 30d 108 tx
agenttrust.uk agenttrust.uk
q 65

Scan any OpenClaw SKILL.md for malware, prompt injection, exfiltration, and 37 other threat patterns. Returns risk score 0-100 and detailed findings.

paid API x402
$0.03 · 30d 2 tx
x402.lucyos.ai x402.lucyos.ai
q 65

Payment for token analysis service ($0.01)

paid API x402
from $0.01
www.jesuschrist.sh www.jesuschrist.sh
q 65

Conversational chat endpoint (v2) providing AI-powered responses; access requires a USDC payment on EIP-155:8453.

paid API x402
$0.02 · 30d 8 tx
x721.dev x721.dev
q 65

View the roadmap

paid API x402
$0.02 · 30d 2 tx
api.agentstatus.tech api.agentstatus.tech
q 65

x402-protected paid API on api.agentstatus.tech (discovered via Coinbase facilitator).

paid API x402
$0.00 · 30d 4 tx
x420.dev x420.dev
q 65

x402-protected paid API on x420.dev (discovered via Coinbase facilitator).

paid API x402
from $1.00
x402.asksurf.ai x402.asksurf.ai
q 65

x402-protected paid API on x402.asksurf.ai (discovered via Coinbase facilitator).

paid API x402
from $0.20
a402test.pages.dev a402test.pages.dev
q 65

Premium access data endpoint gated at $0.05 USDC

paid API x402
$0.05 · 30d 2 tx
verify.camelai.io verify.camelai.io
q 65

Verify if an email address is valid and likely deliverable. Send {"email": "user@example.com"}

paid API x402
$0.01 · 30d 6 tx
datoka-api.bhazarstudio.workers.dev datoka-api.bhazarstudio.workers.dev
q 65

Datoka API: a portable signed commitment to a client-declared API exchange for response handoffs, archived decision inputs and change investigations. 0.002 USDC per receipt; offline verification is free. Keep original bytes locally. Does no…

paid API x402
$2.82 · 30d 10 tx
402sentinel.com 402sentinel.com
q 65

RWA risk gate: score a TOKENIZED ASSET (treasury, stock, credit) BEFORE an agent buys it. POST {target:{payto_address:<token contract>, network:eip155:1|eip155:8453}} returns 0-100 risk, allow/review/block, is_permissioned_security and sign…

paid API x402
$0.17 · 30d 14 tx
api.fairseal.io api.fairseal.io
q 65

Anchor an AI agent decision or audit record to Base mainnet. Submit {schema, payload_hash (SHA-256 hex, 64 chars), metadata}; service queues into a Merkle batch and returns a receipt with pending_anchor status immediately. Full Merkle proof…

paid API x402
$0.43 · 30d 72 tx
compute.memoryapi.org compute.memoryapi.org
q 65

Rent-and-mine arbitrage: GPU rental cost vs best mining revenue.

paid API x402
$1.04 · 30d 108 tx
www.rwakernel.com www.rwakernel.com
q 65

Resolve an EVM token to registry identity. A match is not issuer verification.

paid API x402
$0.03 · 30d 3 tx
api.monpham.work api.monpham.work
q 65

Search X/Twitter tweets by query. POST body: {query, limit}.

paid API x402
$0.33 · 30d 26 tx
finance.toonhaus.dev finance.toonhaus.dev
q 65

Trending symbols

paid API x402
$0.21 · 30d 77 tx
reel24-web-792007954609.us-central1.run.app reel24-web-792007954609.us-central1.run.app
q 65

Reel24: commission one 4-shot AI episode (~32 s) for up to $9.99, charged only when the finished film passes QA — except on Solana and Algorand, where you're charged when you sign (those payments can't be held) and the operator refunds you …

paid API x402
$20.31 · 30d 7 tx
page.fluidrack.com page.fluidrack.com
q 65

Publish ephemeral page

paid API x402
$0.14 · 30d 14 tx
research.appliedidentities.com research.appliedidentities.com
q 65

Three composite AI readiness scores with history

paid API x402
$0.04 · 30d 8 tx
stable-enrich-git-mason-migrate-off-prices-map-merit-systems.vercel.app stable-enrich-git-mason-migrate-off-prices-map-merit-systems.vercel.app
q 65

Exa Search - Neural search across the web

paid API x402
$1338.07 · 30d 53,028 tx
health.memoryapi.org health.memoryapi.org
q 65

WHO Global Health Observatory — life expectancy, obesity, alcohol, air pollution by country.

paid API x402
$1.04 · 30d 108 tx
api.healthparse.io api.healthparse.io
q 65

Search ambulatory surgical centers (ASCs) by state, CCN, or name. Answers: which ASCs are in a given market? Source: CMS ASC cost data.

paid API x402
$1.79 · 30d 48 tx
data-gateway.jonathan-royere.workers.dev data-gateway.jonathan-royere.workers.dev
q 65

Lookup WHOIS records and domain availability in JSON format. Provide the domain name via ?domain=example.com to query registrar, status, and expiration dates.

paid API x402
$0.01 · 30d 2 tx
agent.memoryapi.org agent.memoryapi.org
q 65

Get ERC-8004 registration JSON for memoryapi.org — a complete example of an AI agent registration file with 28 MCP services and x402 support.

paid API x402
$1.04 · 30d 108 tx