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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 5617–5652 of 8,864
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.
citation-tracker.pixelcove.co citation-tracker.pixelcove.co
q 65

Sends one prompt to one search assistant (Perplexity, OpenAI or Gemini) and reports whether it cites your target domains: cited status, citation count, cited domains, model, and a structured error. For Claude, or several engines in one call…

paid API x402
$0.20 · 30d 2 tx
apexrunner.ai apexrunner.ai
q 65

APEX Runner: Market Tick Signal

paid API x402
$2.26 · 30d 315 tx
assay.cascadiantech.com assay.cascadiantech.com
q 65

Liquidity pools created on Base mainnet in the last 24 hours, newest first, one page per call, filterable by exchange and flag. Each pool carries measured facts, each with the block it was read at, and true/false/unknown flags, with evidenc…

paid API x402
$2.60 · 30d 9 tx
api.creativeforesight.io api.creativeforesight.io
q 65

Foresight API request

paid API x402
$2.54 · 30d 36 tx
functions.miniup.app functions.miniup.app
q 65

Caller E2E - x402:

paid API x402
$0.31 · 30d 14 tx
scan.openverbs.com scan.openverbs.com
q 65

Check up to 50 CVE IDs against CISA's Known Exploited Vulnerabilities (KEV) catalog. Returns membership, vendor/product, exploitation evidence, ransomware-use status and remediation guidance from CC0 data. Not listed does not mean safe or u…

paid API x402
$19.91 · 30d 1,387 tx
simfuse.app simfuse.app
q 65

Search SimFuse prepaid travel eSIM data plans for 200+ countries and regions. Filter by destination (ISO country code), days, data and max price; every result has its price and a purchase_url to buy that eSIM with x402 (USDC on Base) or by …

paid API mpp
$16.69 · 30d 257 tx
willimake-it.dylan-caponi.workers.dev willimake-it.dylan-caponi.workers.dev
q 65

Ask the oracle: will I make it?

paid API x402
$0.06 · 30d 15 tx
x402-data-api.x402agent.workers.dev x402-data-api.x402agent.workers.dev
q 65

Cited SEC filing brief with company profile, filing activity, latest financials, period changes, signals and EDGAR source URLs.

paid API x402
$10.22 · 30d 24 tx
agent-dispatch-production-4e75.up.railway.app agent-dispatch-production-4e75.up.railway.app
q 65

Send one SMS to a mobile number, paid per message in USDC with x402. Use it when an agent must notify a person by text. The 402 quotes the exact price for the destination and message length. No account and no API key: any wallet that pays s…

paid API x402
from $0.06
api-production-8785.up.railway.app api-production-8785.up.railway.app
q 65

Convert a Twitter/X, LinkedIn, Medium, Substack, Beehiiv, or public Notion page URL into clean markdown.

paid API x402
$0.08 · 30d 8 tx
x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app
q 65

Live snapshot of the most liquid carbon credits retirable on Base: the top 3 Klima Protocol carbon classes and the top 3 Carbonmark marketplace listings, with USDC-per-tonne prices and tonnes available. Additionally, the additional endpoint…

paid API x402
$3.43 · 30d 149 tx
agent-market-one.vercel.app agent-market-one.vercel.app
q 65

Upcoming Federal Reserve FOMC meetings, press conferences, speeches, testimony and releases with ET times, speakers and a market-moving flag.

paid API x402
$0.02 · 30d 4 tx
web-production-220a3.up.railway.app web-production-220a3.up.railway.app
q 65

Use this when you need to understand what a Robinhood Chain transaction did. Price: $0.005 in USDC on Base or Solana, or $0.02 in USDG or $SWOGE on Robinhood Chain (tool price + settlement cost, minimum $0.02).

paid API x402
$2.94 · 30d 67 tx
orchard-data.netlify.app orchard-data.netlify.app
q 65

Trending tickers right now: StockTwits trending symbols + r/wallstreetbets hot posts with ticker mention counts. JSON.

paid API x402
$0.02 · 30d 4 tx
verifier.quantumshieldlabs.dev verifier.quantumshieldlabs.dev
q 65

Classify a caller-supplied operation claim against caller-supplied evidence under deterministic rules and return a machine-readable handoff receipt. Use this when an orchestrator needs a consistent completion state before accepting an agent…

paid API x402
$0.20 · 30d 5 tx
tensegrity-control-mesh.onrender.com tensegrity-control-mesh.onrender.com
q 65

Deterministic structural failure inspection of a caller-declared control mesh. Structural evidence only; never authorizes execution. 0.01 USDC per request.

paid API x402
$0.19 · 30d 30 tx
www.bitcoind.app www.bitcoind.app
q 65

Complete list of all Bitcoin Core RPC methods (summaries). One call replaces up to 142 individual lookups. Returns name, category, summary, and parameter count for every method.

paid API x402
$0.00 · 30d 4 tx
formwerk.halowerk.com formwerk.halowerk.com
q 65

Prüft am Objekt skript den Befund vorhandene Feldbeschriftung.

paid API x402
$7.17 · 30d 3,578 tx
darrylbots.com darrylbots.com
q 65

Darrylbots paid research: Standard Stock Screen: Quality, Momentum, and Durable Execution

paid API x402
from $0.0010
arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev
q 65

Agent Reliability Network: ARN x402 PayGuard provides x402 payment security for autonomous AI agents. Check the seller before you pay with payment preflight and payment-challenge validation. Returns ALLOW, CAUTION, or BLOCK.

paid API x402
$0.02 · 30d 14 tx
pathmint.edge.report pathmint.edge.report
q 65

BEFORE YOU PAY an x402 402: ping this resource URL. Returns live or dead (ghost listing, timeout, non-compliant host). One cent. Use when holding Payment-Required, before sending USDC to a payTo. Ghost x402, is this endpoint live, verify be…

paid API x402
$0.09 · 30d 32 tx
agent-research-api.onrender.com agent-research-api.onrender.com
q 65

ResearchPi: Extract readable text, title and links from one public HTTPS HTML page. Source URL and retrieval time included. No JavaScript, PDF, login or private network access. Maximum 2 MB HTML / 60,000 text characters.

paid API x402
$179.80 · 30d 15 tx
staging.toolkit.dev staging.toolkit.dev
q 65

Add a new memory. This method is called every time the user informs anything about themselves, their preferences, or anything that has any relevant information which can be useful in the future conversation. This can also be called when the…

paid API x402
$0.03 · 30d 3 tx
www.x402joker.com www.x402joker.com
q 65

Pay-per-joke vending machine: send USDC, get a fresh Claude-generated joke. Optional "theme" picks the topic.

paid API x402
$0.03 · 30d 3 tx
onchain-toolkit.bowling-anthony.workers.dev onchain-toolkit.bowling-anthony.workers.dev
q 65

Live gas price on Ethereum, Base, Arbitrum, Optimism or Polygon, in gwei plus the cost of a plain transfer. Compare several chains in one call.

paid API x402
$0.33 · 30d 44 tx
srv1553682.hstgr.cloud srv1553682.hstgr.cloud
q 65

Crypto Fear & Greed index (current + 7-day history) via the verified-quality meta-router: in-house first, outcome-logged, never charged on failure.

paid API x402
$0.04 · 30d 8 tx
x402.fullstack.cash x402.fullstack.cash
q 65

Access to protected psf-bch-api resources (0.001 USDC)

paid API x402
$0.01 · 30d 6 tx
hivemindos-paid-agent-gateway.hivemindos.workers.dev hivemindos-paid-agent-gateway.hivemindos.workers.dev
q 65

HivemindOS service router for agents: one paid call returns the full HivemindOS commercial catalog (crypto research, wallet risk, Reddit customer research, media, models, email) with live pricing plus every direct x402 purchase endpoint and…

paid API x402
$339.59 · 30d 463 tx
vendsdk.com vendsdk.com
q 65

Live USD spot prices for crypto assets via CoinGecko simple price API

paid API x402
$0.75 · 30d 81 tx
companylens.ve1iko.chatgpt.site companylens.ve1iko.chatgpt.site
q 65

Resolve a UK legal company name or registration number to a sourced Companies House profile. Returns company status, incorporation, SIC codes, registered office, filing due dates and overdue flags. Use for company research and CRM enrichmen…

paid API x402
from $0.01
x402.telnyx.com x402.telnyx.com
q 65

Chat completions via Telnyx Inference (google/gemma-2b-it). OpenAI-compatible. $0.002 USDC per call.

paid API x402
$4.70 · 30d 364 tx
shield.vainplex.dev shield.vainplex.dev
q 65

ShieldAPI - x402 security preflight before agents accept or store credential material

paid API x402
$0.02 · 30d 10 tx
revert.wtf revert.wtf
q 65

Paid hosted deterministic explanation for EVM/RPC/wallet/UserOperation/x402 errors. Send raw pasted error JSON, text, or revert bytes.

paid API x402
$0.00 · 30d 4 tx
api.aventtech.com api.aventtech.com
q 65

QR code generation returning clean scalable SVG: any text/URL up to 1800 chars, selectable error-correction level (L/M/Q/H).

paid API x402
$0.79 · 30d 52 tx
api.stackgoai.com api.stackgoai.com
q 65

Extract structured public business contact information from any public business website. Returns company name, emails, phone numbers, social profiles, postal addresses, and contact pages as structured JSON. $0.01 per request via x402 on Bas…

paid API x402
$0.02 · 30d 2 tx