402utils.com
Extract emails, http(s) URLs, international phone numbers, @mentions and #hashtags from provided text OR html — normalized and de-duplicated. From html, also reads href/src attributes and mailto: links. Emails are syntax-validated; phones use Google libphonenumber (international format). Pattern-based extraction, NOT ML named-entity recognition. What a crawl agent pulls from every page. Processes provided content only; nothing is fetched.
$0.002000 USDC
402utils.com
Text → vector embeddings via Cloudflare Workers AI. Send {text} or {texts[]} (≤20, each ≤4000 chars); returns one float vector per input. Default model @cf/baai/bge-m3 (1024-dim, multilingual). The model is named in the response — embeddings only compare within the same model. Completes the RAG chain: readability → chunk → embed, no OpenAI account. Cosine-compare the vectors yourself. Unavailable model/binding → 503, not billed.
$0.004000 USDC
402utils.com
Extractive summary: selects the N most salient sentences via TextRank (TF-IDF cosine + PageRank) — a pure algorithm, no LLM, so deterministic and free of inference cost. Returns the summary and each chosen sentence with a salience score and index. Extractive (selects existing sentences), NOT abstractive/generative — that is the point: reproducible and model-free. Pre-condense a page before an LLM call. Provided text only. Over 1 MB truncated.
$0.003000 USDC
402utils.com
Extract values from a JSON document with a JSONPath expression or an RFC 6901 JSON Pointer, without returning the whole document. Send {data, path}; get {matches, count}. Path starting with $ = JSONPath ($.items[*].price, $..author, [0], [1:5], [*]); starting with / = JSON Pointer (/items/0/price). No-eval tree walk with bounded traversal; filter expressions [?(…)] are not supported by design.
$0.002000 USDC
booaip.vercel.app
Current gas price (gwei) on an EVM chain via on-chain read. Body: { chain }.
$0.005000 USDC
depscout.vercel.app
Check an npm package, PyPI package, or GitHub repo and return a DepScout install verdict.
$0.02 USDC
booaip.vercel.app
Current crypto Fear & Greed Index with 1-day change (alternative.me).
$0.005000 USDC
booaip.vercel.app
Top APY yield pools by token symbol and chain, with risk flags (DefiLlama). Body: { symbol?, chain?, limit?, safeOnly? }.
$0.01 USDC
hackernews-x402.vercel.app
Hacker News top stories feed. Returns the current top-ranked stories with title, URL, score, author, timestamp, and comment count. Tech industry's premier social news aggregator.
$0.002000 USDC
clink-lithium-vault.fly.dev
Lithium Research Vault - full structured JSON for any lithium / battery-metals producer or DFS-stage developer, by company or mine: production, AISC, reserves, ownership, royalties, offtakes, financials, DFS economics (NPV/IRR/capex), market cap & lithium spot. From SEC/ASX/TSX/cninfo filings, USD-normalized, every figure cited. Greenbushes, Pilgangoora, Wodgina, Cinovec, Manna, Bandeira; tickers SGML, ALB, PILBF, EMH, GL1, PMETF. /vault/summary $0.02; /vault/comparables $0.20.
$0.05 USDC
402utils.com
Resolve a website's best icon: parses <head> for link rel=icon / apple-touch-icon / mask-icon, reads a linked web app manifest's icons, and adds the /favicon.ico fallback, then ranks them (scalable/large first). Returns the best iconUrl plus all ranked candidates with rel/sizes/type/source. The URL is SSRF-checked; fetches are capped. For agents building directories or UIs.
$0.002000 USDC
402utils.com
Detect a website's tech stack — frameworks, CMS, e-commerce, analytics, tag managers, CDN, web server, language — from response headers, cookies, <meta generator> and HTML/script markers. HEURISTIC, signature-based on PUBLIC fingerprints (NOT the licensed Wappalyzer database): strong on popular tech, conservative elsewhere; not-listed ≠ absent. Each hit carries a confidence and the matched evidence. The URL is SSRF-checked; the fetch is capped.
$0.004000 USDC
402utils.com
Similarity of two texts in [0,1]. Methods: `jaccard` (word-set overlap, default), `levenshtein` (normalized edit distance) — both pure & deterministic — and `cosine-embed` (cosine of Cloudflare Workers AI embeddings @cf/baai/bge-m3, semantic; model named). Compare two texts (dedup, matching) without handling embeddings yourself. cosine-embed 503s unbilled if the AI binding is unavailable. Caps: jaccard 200k, levenshtein 5k, cosine 4k chars.
$0.002000 USDC
402utils.com
Extract salient keywords/key-phrases from text via TextRank (word co-occurrence graph + PageRank), merging adjacent high-ranked words into phrases. Pure, deterministic, model-free — extractive, NOT ML/NER or an LLM (the point: reproducible, no inference cost). English + French stopwords removed. Returns keywords[] with normalized scores (top ≈ 1). For content tagging/indexing and pre-RAG. Over 100k tokens is truncated.
$0.002000 USDC
booaip.vercel.app
Token price, liquidity, 24h volume and FDV from DEX pairs (DexScreener).
$0.01 USDC
402utils.com
Segment text into sentences — robust to the classic traps: abbreviations (Dr., e.g.), decimals ($3.14), URLs/emails (www.x.com), initials (J. R. R.) and ellipses. A period is a boundary only when followed by whitespace and a sentence-like start; !, ? and … are stronger; blank lines split paragraphs. Rule-based (EN/FR tuned), deterministic. A fine-grained chunking primitive, complements /v1/chunk. Over 1 MB truncated.
$0.001000 USDC
booaip.vercel.app
Chain TVL, rank and dominance (DefiLlama). Body: { chain? }.
$0.01 USDC
x402joke.vercel.app
Pay-per-joke vending machine: send USDC, get a fresh Claude-generated joke. Optional "theme" picks the topic.
n/a
aubrai-x402.vercel.app
Send a question about longevity, aging, or lifespan science. Returns a request ID to poll for the AI-generated answer from Aubrai, VitaDAO's decentralized co-scientist.
$0.02 USDC