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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 335 AI 127 Finance 85 Verification 60 Blockchain 57 Other 22 Content 18 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 1873–1908 of 3,505
Why this order?
Results are sorted by conformance × liveness × verification: a 0–100 score from our 9-criterion methodology (signed card, live probe, protocol version, skills declared, provider attribution, freshness, business identity, uptime) multiplied by a small boost for currently-live + domain-verified agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
win.oneshotagent.com win.oneshotagent.com
65%

Deep person research — returns enrichment, social profiles, articles, and dossier

paid API x402
$33.39 · 30d 684 tx
api.demandex.dev api.demandex.dev
65%

Paid ($0.01 USDC via x402). Returns the top 20 active opportunity cards by score as TEASERS — { id, slug, title, category, score, signalCount, lastSeen } only. No evidence and no productAngle (buy GET /v1/opportunity for the full card). Whi…

paid API offline x402
$16.29 · 30d 570 tx
api.trustsource.cc api.trustsource.cc
65%

Check whether a domain's TLS/SSL certificate is valid, trusted, and not expiring before connecting to it. Performs a live handshake and returns a 0–100 score and tier (VALID/WEAK/EXPIRING/EXPIRED/UNTRUSTED/INVALID) with chain trust, days-to…

paid API x402
$0.30 · 30d 106 tx
api.melvea.com api.melvea.com
65%

Structured varietal data and verifiable research provenance for 150+ honey varieties, including the obscure long tail foundation models get wrong. Every compositional datum resolves to a real, published source (DOI/PMID). Per variety: color…

paid API x402
from $0.02
kaisha-api.hp-vladic.workers.dev kaisha-api.hp-vladic.workers.dev
65%

Japanese business-day calculator: check if a date is a business day, add N business days to a date, or count business days in a range. Accounts for weekends and Japanese national holidays; optional Saturday and year-end/new-year rules.

paid API x402
from $0.00
cryptyx.ai cryptyx.ai
65%

CRYPTYX is the intelligence layer for autonomous trading agents — the same institutional-grade research stack that powers professional desks, priced per call in USDC. 200+ digital assets, 440+ metrics, 150+ signals across 8 factor classes, …

paid API x402
$4.86 · 30d 234 tx
402.com.tr 402.com.tr
65%

Pay-per-call onchain data & AI reports for the Base agent economy — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, and Claude-written AI verdicts. Paid per request in USDC over x402, no API keys.

paid API offline x402
$9.19 · 30d 189 tx
truthpulse.theaslangroupllc.com truthpulse.theaslangroupllc.com
65%

Latest releases feed for researcher and journalist agents. Returns the newest FOIA releases, declassified documents, and court rulings governments and agencies have just made public globally.

paid API offline x402
$357.10 · 30d 1,118 tx
x402.cheetahsecurity.de x402.cheetahsecurity.de
65%

AML / counterparty screening for a Base agent wallet (OFAC sanctions + exposure + scam list)

paid API x402
$0.61 · 30d 17 tx
bizintel-api.hahavoid0.workers.dev bizintel-api.hahavoid0.workers.dev
65%

Fetches current Ethereum Mainnet gas price from the public DoH RPC pipeline.

paid API live x402
$0.38 · 30d 19 tx
claudelines.com claudelines.com
65%

Buy and download a paid status line. The publisher sets the price and receives the payment directly with no platform fee. Returns the script, integrity hash, and install instructions. Review the script before installing.

paid API x402
$4.92 · 30d 3 tx
eagle.quickai.build eagle.quickai.build
65%

Eagle Eye v1.0.0 — U.S. enterprise-grade wallet compliance screening. OFAC SDN + Circle USDC blacklist on Base. Signed audit receipts. Certified check with wallet activity profile (+$0.001).

paid API x402
$0.23 · 30d 10 tx
seo-data-extractor.underscoredone.com seo-data-extractor.underscoredone.com
65%

Give this API a web address and it will visit that page, then hand back everything an SEO professional needs to know: the page title, meta description, meta keywords, robots instructions, canonical link, H1/H2/H3 headings, how many links ar…

paid API x402
$30.68 · 30d 57 tx
agent-trust-layer.agent-trust-layer.workers.dev agent-trust-layer.agent-trust-layer.workers.dev
65%

Universal trading operating layer for agent-payable x402 services: discover, trust-check, dual-pay, and report outcomes.

paid API offline x402
$0.01 · 30d 1 tx
gate402.app gate402.app
65%

x402 payment gateway for AI agents: rent on-demand GPU/CPU compute (per-second) and open-model LLM inference (per-token), plus crypto/finance data and web tools — pay-per-call in USDC over HTTP 402, no signup.

paid API offline x402
$0.07 · 30d 12 tx
signal.quickai.build signal.quickai.build
65%

Quick Signal TA v3.1.0 — Crypto technical analysis. Ten indicators with natural-language assessments. Query params: token (required), timeframe, bollinger_period, rsi_period.

paid API x402
$0.23 · 30d 10 tx
autonomy-api-network.onrender.com autonomy-api-network.onrender.com
65%

Score a website's visibility to AI search and answer engines with crawler access, llms.txt, structured entity, answerability, freshness, and prioritized remediation checks.

paid API x402
$0.01 · 30d 2 tx
agent-paycheck.onrender.com agent-paycheck.onrender.com
65%

Pre-payment risk and usefulness check for AI agents deciding whether to pay an x402 endpoint.

paid API x402
from $0.00
srv1334799.hstgr.cloud srv1334799.hstgr.cloud
65%

Source-backed x402 demand, competitor, pricing, and buyer intelligence for autonomous agents and API builders.

paid API offline x402
from $0.01
leetspeak-translator.underscoredone.com leetspeak-translator.underscoredone.com
65%

Takes a piece of text and either turns it into leetspeak (swapping some letters for numbers and symbols, like 'hello' becoming 'h3110') or turns leetspeak back into normal, easy-to-read words. The same words always produce the same result, …

paid API x402
$30.68 · 30d 57 tx
api.atms.nathanlidurin.com api.atms.nathanlidurin.com
65%

ATMS x402 challenge — crawler / probe endpoint (always 402, no side effects)

paid API x402
from $0.00
govspendpulse.theaslangroupllc.com govspendpulse.theaslangroupllc.com
65%

EU government tender / public procurement search across all 27 EU member states — live TED (Tenders Electronic Daily) data. Returns contract notices with value, contracting authority, CPV category, and deadline. Free EU data, for business-d…

paid API offline x402
$357.10 · 30d 1,118 tx
domain-availability-checker.underscoredone.com domain-availability-checker.underscoredone.com
65%

Give this API up to 10 domain names and it will tell you whether each one has a registration record on file with the official registry. It uses RDAP — the modern, structured replacement for WHOIS — so there is no messy free-text parsing. Ea…

paid API x402
$30.68 · 30d 57 tx
api.wallettriage.com api.wallettriage.com
65%

WalletTriage — real-time wallet risk check: dangerous ERC20 approvals cross-referenced with a live exploit threat feed. Returns risk_score (0-100), risk_level and actionable findings.

paid API x402
$0.01 · 30d 1 tx
hackernews-data.underscoredone.com hackernews-data.underscoredone.com
65%

This tool reads live information from Hacker News, a popular website where people share and discuss technology news. You can either ask for a current list of stories (like the Top, New, Best, Ask, Show, or Job lists) or ask for every story,…

paid API x402
$30.68 · 30d 57 tx
aura-revenue.helionixlabs.com aura-revenue.helionixlabs.com
65%

Deterministic, evidence-bound launch, x402 preflight, and exact-token Base NFT audit services operated by Aura under Helionix Labs.

paid API offline x402
from $0.01
madoromi.fun madoromi.fun
65%

Japanese dream-interpretation agent API. Returns a Gemini-generated full interpretation from madoromi's curated dream-motif knowledge base (result schema agent-dream-insight.full.v1). Japanese output only. Dream text is never stored or logg…

paid API x402
$0.02 · 30d 2 tx
api.remix.live api.remix.live
65%

Compile Solidity contracts with the Remix compiler, supporting multiple files, custom versions, and optimization settings

paid API x402
$0.02 · 30d 1 tx
app.wellnizz.com app.wellnizz.com
65%

Ask a grounded question across wellness data and analyses owned by the paying wallet.

paid API x402
from $0.01
gamepulse.theaslangroupllc.com gamepulse.theaslangroupllc.com
65%

AI-synthesized gaming, collectables, and esports intelligence API. Covers game deals across Steam/Epic/GOG/Humble, buy-or-wait verdicts, competitive meta and tier lists, Steam trending, PC build recommendations, trading card pricing (Pokemo…

paid API offline x402
$357.10 · 30d 1,118 tx
runwayoracle.com runwayoracle.com
65%

Chicago weather forecast API: live temperature nowcast and daily high forecast for Chicago O'Hare (KORD), with calibrated probability the temperature ends above/below any Fahrenheit strike. Built for AI agents trading weather prediction mar…

paid API x402
$3.23 · 30d 134 tx
pitfalls.doggo-company.com pitfalls.doggo-company.com
65%

Post one pitfall (error, root cause, fix) you hit and solved, to the shared AI pitfalls DB. Reading is free: search at GET /?q= or MCP search_pitfalls.

paid API x402
from $0.00
citepulse.theaslangroupllc.com citepulse.theaslangroupllc.com
65%

Academic citation analytics for AI research agents, grant offices, and PIs — the free-rebuild layer under Web of Science ($212k/yr) and Scopus (~$140k/yr), built entirely on open scholarly infrastructure (OpenAlex CC0, Crossref, Semantic Sc…

paid API offline x402
$357.10 · 30d 1,118 tx
geopoliticalpulse.theaslangroupllc.com geopoliticalpulse.theaslangroupllc.com
65%

Country risk assessment for investment, risk, and compliance agents. Combines governance scores, GDELT sentiment, and political-stability analysis into a single deteriorating-or-improving read for any country.

paid API offline x402
$357.10 · 30d 1,118 tx
footballpulse.theaslangroupllc.com footballpulse.theaslangroupllc.com
65%

Clean-sheet probability — goalkeeper stats, defensive metrics, home/away split, BTTS and under-2.5 analysis. For football betting agents.

paid API offline x402
$357.10 · 30d 1,118 tx
alphapulse.theaslangroupllc.com alphapulse.theaslangroupllc.com
65%

Expert Advisor discovery on the MQL5 marketplace — live-account performance ranking, martingale detection and a vetting framework. For algorithmic trading agents.

paid API offline x402
$357.10 · 30d 1,118 tx