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.
Why this order?
4yearcycle.com
box.guardianhobgoblin.com
cryptyx-ai.vercel.app
Service health probe — build version, last pipeline run, current signal/composite/asset counts. Sub-second, no DB writes. The cheapest end-to-end pay-per-call check before issuing real queries.
gateway.hillguava.xyz
Current southwest monsoon advance status across India.
k2so.wrong.systems
Live counterparty due diligence for agent-to-agent commerce: given a domain, compose free public records (registrar RDAP, Certificate Transparency logs, TLS posture, DNS structure) into a trust scorecard an agent can use before paying an or…
agent.atinamos.co.uk
Independent website QA and pre-handover verification for AI agents. Submit one public website URL. Atinamos loads the real site in desktop and mobile Chromium, checks HTTP and browser failures, failed requests, console errors and warnings, …
donate.0000402.xyz
Pay $0.01 USDC as a small donation or a simple live x402 integration test. Optional name and message are stored publicly and shown on GET /donations. Network: Base Mainnet. Each request records one donation and returns public feed links.
oyapicks.app
OyaPicks: keyword search of live prediction markets with prices
api.terradeed.co.uk
Extract structured data from any URL using AI reasoning. Describe the fields you need, get Claude-validated JSON back. Built for vertical data: property listings, recruitment profiles, company intel — not commodity scraping.
x402-factory.com
Cheapest endpoint: liveness plus x402 payment pipeline check — Returns ok with the server time and whether this call was paid. Use it to verify your x402 client end to end before spending on data endpoints.
img402.dev
Image hosting API for AI agents. Upload an image, get a public CDN URL. Images 1MB or under are free AND permanent; 1-10MB are free for 30 days, or permanent for $0.01 USDC. No accounts, no API keys. Payment via x402.
api.lastlookdata.com
LastLook Data — home purchase market bundle: current mortgage rate, median sale price, monthly payment estimate, income required to qualify, and affordability level. Directly answers whether a buyer can afford a median home.
darrylbots.com
Darrylbots paid research: Standard Stock Screen: Quality, Momentum, and Durable Execution
capitol.lonestaroracle.xyz
US congressional (Senate+House) stock trades; ?symbol= for a ticker
transit402.dev
Active subway service alerts with direction, severity, and estimated delay minutes
x402-crypto-data.vercel.app
Top DeFi yield pools with APY/TVL, filterable by chain (DefiLlama).
web-production-78e17.up.railway.app
Summarize and compress text, Markdown, or JSON into a structured summary. Output as prose, bullets, headline, or TLDR, with optional exact target word count. Built for agent and document pipelines.
action402.vercel.app
Paid webhook/API execution for autonomous agents. Executes one public HTTPS action after x402 payment, applies retries and idempotency, then returns a signed receipt with request hash, response hash, target, status, and attempt count.
orionkr.xyz
Cheapest starter checkout for narrow wallet-risk probes. Pay 0.005 USDC once; no query params required for a catalog-probe sample. Returns wallet exposure, unsafe token concentration, suspicious counterparties, portfolio risk, and the exact…
rugsense.xyz
The launch-lifecycle risk desk for Base. Scores freshly-launched Base tokens into one machine-actionable AVOID/WATCH/HOT decision (0-100 composite + transparent per-signal checks, deterministic, no LLM) and follows every verdict to its outc…
riskpulse.theaslangroupllc.com
Earthquake activity check, deterministic. Answers "any recent earthquakes near this location", "how seismically active is this area right now". Queries the USGS FDSN event catalog near a lat/lon within a radius (or the global M5+ feed when …
stableflare.dev
Capture a screenshot of any URL or HTML. Returns a PNG or JPEG image. Supports full-page, element selection, custom viewport.
api.node4all.com
Node4All pdf2md — layout-aware PDF → Markdown (pdf2md) conversion powered by @opendocsg/pdf2md, ideal for ingesting long documents into agent context windows. Accepts a multipart "file" upload (application/pdf, ≤10MB) and returns text/markd…
gateway.sanfoundation.com
Search the open web for a topic and return ranked results with relevant excerpts. Each result includes the source URL, page title, publish date when known, and the excerpts the underlying ranker scored as most relevant.
thevaultreport.com
COMEX daily delivery notices: issues and stops with the house-vs-customer split, per CME product and contract month. Read from CME's daily Issues and Stops report and reconciled against its own printed totals. Contract counts are per produc…
x402-stock-indicators.vercel.app
Analyst sentiment and short interest for a US stock in one call: recommendation trend, consensus price targets, recent upgrades/downgrades by firm, and short interest with month-over-month change -- rising short interest into price weakness…
www.bitcoind.app
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.
stablepeopledata.dev
PDL Company Search - Search across 30M+ company records using Elasticsearch DSL or SQL queries. Returns matching company records with pagination via scroll_token. Price scales with the requested `size` (1 PDL credit per result).
trust402.vercel.app
Produce a concrete quote and approval payload for a multi-resource purchase path without spending.
api.phoneagent.xyz
PhoneAgent — countries with rentable SMS phone numbers for AI agents. Returns 190+ supported countries, each with the number of services offered and the cheapest price tier ($1, $2, or $5 USDC). Add ?service=<alias> (e.g. tg, wa, go, zo for…
x402.swaphunt.dev
SwapHunt — a crypto market-context toolkit for trading agents: live prices, market regime, volatility, sentiment, funding, macro events, seasonality and anti-FOMO sanity checks, all pay-per-call. This route returns a single asset's live spo…
mimirapi.com
Paid liveness probe for the MimirAPI counter. Returns pong, the SKU id, and a server timestamp. One tenth of a cent buys a complete challenge, sign, settle, serve round trip — the cheapest possible proof that your x402 client wiring works b…
hash-hmac.underscoredone.com
Give this API any text or binary data and it instantly returns its fingerprint under whichever hash algorithms you choose — SHA-256, SHA-512, MD5, BLAKE2, CRC32, and more. It also signs data with a secret key (HMAC) and, most importantly, s…
json-suite.underscoredone.com
Every AI agent and developer runs into broken or confusing JSON constantly. This tool handles all the most common JSON headaches in one place: check if JSON is valid (with exact error location), fix near-JSON that has typos or formatting mi…
induction.aarei.ai
Screen an entity or alias name against the OFAC SDN list. Exact match on a normalised string only (trim, collapse whitespace, NFC, casefold). Returns 503 if the list has never loaded (deny-on-error policy).
search.gedx402.com
Open-web search — one x402 POST discovers SERP candidates, ranks with BGE embeddings, optional page snippets. $0.370 USDC per request. Pseudo-Exa via headless browser + semantic rank. Agent search: web search, exa, firecrawl, serp, semantic…