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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 937–972 of 1,919
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.
vedetta.dethboy.com vedetta.dethboy.com
65%

Verifiable call log: every signal this desk has published, timestamped and countable (?asset=BTC optional). Audit us for a penny before you spend a dime — no accuracy claims, compute your own. Descriptive research, not financial advice.

paid API x402
$1.71 · 30d 37 tx
asn-lookup.underscoredone.com asn-lookup.underscoredone.com
65%

Given an internet address (IP) or a network identification number (ASN), this tool returns who operates that piece of the internet: the network number, the owner's name, the country it's registered in, the regional registry that manages it,…

paid API x402
$30.68 · 30d 57 tx
url-uptime-checker.underscoredone.com url-uptime-checker.underscoredone.com
65%

Checks whether a website or web address is currently reachable and reports how fast it responded.

paid API x402
$30.68 · 30d 57 tx
artifactguard-kl4hfo6j2q-as.a.run.app artifactguard-kl4hfo6j2q-as.a.run.app
65%

Fetch a public HTTPS page, extract compact agent-ready text, flag direct or obfuscated prompt injection, quarantine unsafe text, and return a signed receipt.

paid API x402
$0.01 · 30d 1 tx
sanctions.lonestaroracle.xyz sanctions.lonestaroracle.xyz
65%

OFAC SDN sanctions screen for a name / entity / wallet (?name=)

paid API x402
$10.10 · 30d 113 tx
llm-smart.hergertsynthora.com llm-smart.hergertsynthora.com
65%
paid API x402
$0.44 · 30d 98 tx
hazard.lonestaroracle.xyz hazard.lonestaroracle.xyz
65%

Global (or per-country) natural-hazard / disaster alert signal (optional ?country=)

paid API x402
$10.10 · 30d 113 tx
peptidesdirect.io peptidesdirect.io
65%
paid API x402
$0.25 · 30d 2 tx
youtube.use.x402atlas.com youtube.use.x402atlas.com
65%

Full transcript of any YouTube video by video id or URL: captions/subtitles as clean plain text plus timestamped segments, the video's chapter markers, and every caption track it offers so an agent can pick a language and re-fetch. YouTube …

paid API x402
$1.27 · 30d 87 tx
agents.ai-rook.com agents.ai-rook.com
65%

Email validation — syntax check plus live MX record DNS lookup to confirm deliverability.

paid API x402
$1.28 · 30d 78 tx
agent-arcade.use.x402atlas.com agent-arcade.use.x402atlas.com
65%

Twenty-Four daily math puzzle — four numbers to combine into exactly 24; deterministic solvable UTC daily challenge for agent reasoning benchmarks.

paid API x402
$1.27 · 30d 87 tx
aisfleet.com aisfleet.com
65%

Get the latest available AIS Fleet vessel position for a 9-digit MMSI, observed within the prior six hours. The response includes observation time and age.

paid API x402
$0.01 · 30d 1 tx
vulnfeed-api.novadyne.ai vulnfeed-api.novadyne.ai
65%
paid API x402
$0.03 · 30d 15 tx
finance-api.kdlcfa.workers.dev finance-api.kdlcfa.workers.dev
65%

Bitcoin (BTC-USD) spot price, delayed, via Yahoo Finance

paid API x402
$6.12 · 30d 255 tx
tools.halowerk.com tools.halowerk.com
65%

Findet Betraege in Freitext, deutet deutsche und englische Tausender- und Dezimaltrennung richtig, loest Mio, Mrd, Tsd und k auf, erkennt 50 Waehrungen an Symbol, Code oder Wort einschliesslich USDC und Bitcoin und liefert Zahl, Waehrungsco…

paid API x402
$0.99 · 30d 240 tx
sec.use.x402atlas.com sec.use.x402atlas.com
65%

SEC company financials by ticker — normalized annual and quarterly revenue, income, balance-sheet, cash-flow and EPS facts.

paid API x402
$1.27 · 30d 87 tx
spark.lonestaroracle.xyz spark.lonestaroracle.xyz
65%

Wholesale US electricity-market price + volatility signal (no params)

paid API x402
$10.10 · 30d 113 tx
api.andromalius.io api.andromalius.io
65%

Audit an x402 v2 payment challenge. Use when: Before signing a new or changed x402 payment requirement. Preview: https://api.andromalius.io/examples/challenge-audit. Buy: https://andromalius.io/buy. Safe client: https://andromalius.io/integ…

paid API x402
$0.01 · 30d 1 tx
techforce-agents.onrender.com techforce-agents.onrender.com
65%

Job listings on demand from 26+ boards worldwide (Indeed, Adzuna, Reed, RemoteOK, Jooble, and more) — title, company, location, salary, job type, description, posting date, and apply URL. Get results for $0.01 per record (minimum 10, up to …

paid API x402
$4.49 · 30d 13 tx
x402-wallet.558686.xyz x402-wallet.558686.xyz
65%

Generate buyer-owned signing safety controls and private-key boundary rules.

paid API x402
$4.70 · 30d 123 tx
api.agent-immortality.com api.agent-immortality.com
65%

Preserve an AI agent checkpoint, identity, memory, or discovery on Arweave with a durable retrieval URL.

paid API x402
$12.00 · 30d 12 tx
liquidity.lonestaroracle.xyz liquidity.lonestaroracle.xyz
65%

US market-liquidity & financial-conditions macro signal (no params)

paid API x402
$10.10 · 30d 113 tx
chain-tools.use.x402atlas.com chain-tools.use.x402atlas.com
65%

Solana Program Derived Address (PDA) calculator — derive the canonical off-curve address and bump from bounded public seeds offline, without RPC or key handling.

paid API x402
$1.27 · 30d 87 tx
twitter.use.x402atlas.com twitter.use.x402atlas.com
65%

Search Twitter/X with structured filters or raw advanced-search syntax. Returns up to 20 normalized tweets with full text, author details, engagement metrics and a pagination cursor.

paid API x402
$0.21 · 30d 43 tx
anywaypossible.com anywaypossible.com
65%

Live Base wallet balance for AI agents. Returns native ETH and Circle USDC balances, atomic values, block height, contract address, and observation time for any EVM address. Includes a machine-readable upgrade path to treasury readiness for…

paid API x402
$0.27 · 30d 14 tx
ocr.underscoredone.com ocr.underscoredone.com
65%

Send a picture, either as a public web address or as base64-encoded image data, and get back the plain text found inside it.

paid API x402
$30.68 · 30d 57 tx
photographer-guide.whkirl.workers.dev photographer-guide.whkirl.workers.dev
65%

Photographer Guide: plans a night-photography shoot from a GPS position using live cloud-cover forecasts, moon phase, astronomical darkness and the meteor-shower calendar. Returns scored shooting locations, a driving route with timing, en-r…

paid API x402
$2.10 · 30d 2 tx
amalgam.cc amalgam.cc
65%

Hybrid semantic + keyword search over the embedded German law corpus from https://www.gesetze-im-internet.de/(Gesetze). Submit a natural-language `query` in a JSON body (`{"query": "..."}`) and receive the most relevant law chunks fused fro…

paid API x402
$0.02 · 30d 2 tx
token4u.ai token4u.ai
65%

gpt-4o-mini API call (~128 tokens)

paid API x402
$23.27 · 30d 339 tx
signals.edge.report signals.edge.report
65%

Gas fee snapshot for Base (and Ethereum when configured): maxFeePerGas and maxPriorityFeePerGas in gwei. Use before submitting an EVM transaction.

paid API x402
$0.06 · 30d 36 tx
5108-x402.community.iamstarchild.com 5108-x402.community.iamstarchild.com
65%

Get real-time spot price and market data for a cryptocurrency

paid API x402
$0.47 · 30d 34 tx
x402.aispace.bot x402.aispace.bot
65%

Text-to-image generation on Venice models (Flux, SD3.5, GPT-Image, HunyuanImage, and more), paid per request in USDC on Base via x402, no API key. Resolve a model id from GET /api/v1/models?type=image and an optional style from GET /api/v1/…

paid API x402
$34.81 · 30d 242 tx
sqlpermit.schemasure.com sqlpermit.schemasure.com
65%

Decide whether an agent-authored PostgreSQL statement complies with an execution policy, using PostgreSQL's own parser rather than pattern matching. Detects statement stacking, data-modifying CTEs, COPY PROGRAM, privilege changes, and dange…

paid API x402
$1.40 · 30d 62 tx
content.lonestaroracle.xyz content.lonestaroracle.xyz
65%

Content repurposing — turns any URL into a LinkedIn post, 3 tweets, newsletter blurb, and SEO summary

paid API x402
$10.10 · 30d 113 tx
api.botpay.network api.botpay.network
65%

BotPay /go access on Base USDC

paid API x402
$44.14 · 30d 2,794 tx
goldkey-edge-storefront.noah-ing.workers.dev goldkey-edge-storefront.noah-ing.workers.dev
65%

$0.01 AI-agent tool-call preflight: return ALLOW, REVIEW, or BLOCK before an MCP/tool call, payment, fetch, message, write, or execution. One deterministic request combines prompt-injection and hidden-Unicode scanning, SSRF/unsafe-URL scree…

paid API x402
$0.01 · 30d 1 tx