bio.halowerk.com
Slides each caller-supplied spacer over a bounded phage sequence in both orientations, records its minimum Hamming distance and reports matches within a caller-selected mismatch threshold. It does not account for PAMs, phage taxonomy, infection biology, escape, host range or therapeutic suitability.
$0.004000 USDC
x402.coinstats.app
CoinStats live currency exchange rates for supported fiat pairs
$0.001000 USDC
api.aislabs.ai
Single-CVE priority verdict from today's AIS ranked set (score, rank, factors) — or unlock every CVE route with an AIS CVE key ($19/30d): https://aislabs.ai/gateway/
n/a
tanod.dev
utilpeek (Tanod) cloud GPU prices: AWS, Azure and Google Cloud list price per GPU-hour by chip, memory and region, on-demand and spot, cheapest first. Use when an agent must pick the cheapest cloud GPU per hour on AWS, Azure or Google Cloud, or check rent-vs-buy break-even.
$0.002000 USDC
tanod.dev
sitepeek (Tanod) web page to text for a list of URLs in the common contents API shape: up to 10 public URLs fetched in one call (static fetch, 50,000 characters per page). USD 0.002 per URL (1-10 URLs per call: USD 0.002-0.02). This call: 1 URL. Use when an agent needs the text of up to 10 URLs in the common contents API shape, as a drop-in base URL.
$0.002000 USDC
scrooge-x402-tool-mill.vercel.app
Watch one public page for 7 days. Checks hourly. When the content hash changes, POST {watch_id,url,old_fingerprint,new_fingerprint,changed_at} to your https callback (5s timeout, one retry). POST JSON {"url":"https://example.com","callback_url":"https://example.com/hook"}. Returns {watch_id,url,expires,status_url}. Free status is GET /v1/watch/:id and does not show the callback. At 500 active watches, POST returns 503 before payment. $0.10 USDC on Base (eip155:8453). No API key.
$0.10 USDC
x402-research-iota.vercel.app
Compact trend signal (bullish/neutral/bearish + score). Assets: btc,eth,sol,xrp,doge,ada,avax,link,dot,ltc,bch,uni,aave,xlm,hbar,shib,sui,near,atom,fil. Free delayed sample: /api/sample/signal
$0.003000 USDC
scrooge-x402-tool-mill.vercel.app
Public-record company profile for a domain: legal name, domain age, registrar, LEI, and social links. Merges homepage Organization JSON-LD, RDAP, GLEIF, and Wikidata. Each filled field names its source. POST JSON {"domain":"coinbase.com"} or {"url":"https://www.coinbase.com"}. Nothing found is HTTP 200 with nulls, not an error. $0.03 USDC on Base (eip155:8453). No API key.
$0.03 USDC
code-toll-production.up.railway.app
Diagnose a failed x402 payment. Returns structured error code, human explanation, and exact fix. Example: /diagnose?error=insufficient_funds&balance=0.003&required=0.01
$0.01 USDC