Sato Hub

x402 · merchants

asn-lookup.underscoredone.com

Base · payout 0xe9740820225b3918b4ddd1292c7ca4ca0e2c2f08

Answers HTTP 402

3 of 6 probed endpoints answered HTTP 402 with a parseable payment payload

checked 2026-10-05

Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.

82 x402-style payments from 6 distinct payers, $0.82 USDC in the last 7 days (Base, exact read)

window ended 2026-10-05

Payments
82
Outside payers
6
USDC
0.82

All USDC received at this payout address: $0.82 (includes payments that are not x402)

Method: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.

Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-05, every block of the window: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's `exact` scheme uses. Some non-x402 gasless sends use it too; Sato Hub's own payer wallets are left out

Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.

Chains · one payout address, each chain read on its own

ChainPayout addressListingsAnswers 402x402-style payments
Base0xe9740820225b3918b4ddd1292c7ca4ca0e2c2f08263 of 6 probed endpoints answered HTTP 402 with a parseable payment payload
2026-10-05
82 x402-style payments from 6 distinct payers, $0.82 USDC in the last 7 days (Base, exact read)
Hosts
asn-lookup.underscoredone.com, bimi-checker.underscoredone.com, cors-header-checker.underscoredone.com, cpi-report-us.underscoredone.com, curl-http-request.underscoredone.com, dmarc-lookup.underscoredone.com, dns-whois-lookup.underscoredone.com, domain-age-checker.underscoredone.com, domain-availability-checker.underscoredone.com, email-verifier.underscoredone.com, ens-resolver.underscoredone.com, hackernews-data.underscoredone.com, hash-hmac.underscoredone.com, http-header-checker.underscoredone.com, http-status-checker.underscoredone.com, json-suite.underscoredone.com, leetspeak-translator.underscoredone.com, mortgage-amortization.underscoredone.com, ocr.underscoredone.com, port-scanner.underscoredone.com, qr-code-generator.underscoredone.com, screenshots.underscoredone.com, seo-data-extractor.underscoredone.com, shopify-ai-rank-checker.underscoredone.com, sitemap-url-extractor.underscoredone.com, url-uptime-checker.underscoredone.com
Listings
26 registered in the x402 catalogue
Price range
$0.010 to $0.020 per call, as registered
Categories (auto)
Identity (8), Developer tools (6), Web data (4), Commerce (2), Market data (2), Other (2), Onchain data (1), Security (1)
First seen
2026-10-05 · last seen 2026-10-05

Claim this merchant

Sign a message from the payout address 0xe97408…2c2f08 to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.

Registrations · 26

EndpointChainCategoryPriceCatalogue date
https://asn-lookup.underscoredone.com/lookup
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 regi…
BaseIdentity$0.012026-10-04
https://bimi-checker.underscoredone.com/check
Checks one or more domains to see whether they are set up to show a brand logo next to emails in Gmail, Apple Mail, and Yahoo. It looks up the BIMI settings the domain has published, checks the logo file follows the req…
BaseIdentity$0.012026-10-04
https://cors-header-checker.underscoredone.com/check
Sends a real request to any URL you provide, attaches an Origin header, and reads back all six standard cross-origin permission headers the server returns. Tells you whether cross-origin requests are enabled at all, whe…
BaseDeveloper tools$0.012026-10-02
https://cpi-report-us.underscoredone.com/cpi
Gives you official United States inflation numbers from the government's BLS Consumer Price Index. Ask for the newest reading, a specific month in the past, or a whole range of months, and get back clear percentages for…
BaseMarket data$0.012026-10-05
https://curl-http-request.underscoredone.com/curl
Send an HTTP request to any URL from our servers and receive the full response — including the status code, all response headers, and the body content. Supports GET, POST, PUT, PATCH, DELETE, and HEAD. Automatically fol…
BaseWeb data$0.012026-10-02
https://dmarc-lookup.underscoredone.com/dmarc-lookup
Give this tool a list of domain names and it will instantly check each one's DMARC email security record. DMARC is a standard that tells email providers how to handle fake or spoofed emails pretending to come from your …
BaseIdentity$0.012026-10-05
https://dns-whois-lookup.underscoredone.com/lookup
Send up to 10 domain names and get back every DNS record type (A, AAAA, MX, CNAME, TXT, NS, PTR, SOA, SRV, CAA, NAPTR, DS, TLSA) plus the full WHOIS registration profile (registrar, dates, contacts, status, nameservers)…
BaseIdentity$0.012026-10-05
https://domain-age-checker.underscoredone.com/lookup
Send a list of domain names and this tool tells you exactly how old each one is, when it was first registered, when it expires, and how much time is left before expiration. Great for spotting brand-new suspicious domain…
BaseIdentity$0.012026-10-05
https://domain-availability-checker.underscoredone.com/check
Give this API up to 10 domain names and it tells you whether each has a registration record at the official registry. It uses RDAP, the structured replacement for WHOIS, so there is no free-text parsing. Each domain com…
BaseIdentity$0.012026-10-05
https://email-verifier.underscoredone.com/verify
Takes one email address and tells you whether it can actually receive mail. Returns a verdict of valid, invalid, or risky, splits the address into username and domain, and flags free providers and role accounts like adm…
BaseIdentity$0.012026-10-05
https://ens-resolver.underscoredone.com/resolve
Look up an ENS name or an Ethereum address and get back the matching one, automatically figuring out which direction you need.
BaseOnchain data$0.012026-10-05
https://hackernews-data.underscoredone.com/fetch
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…
BaseWeb data$0.012026-10-02
https://hash-hmac.underscoredone.com/hash
Give this API any text or binary data and it 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 safely ver…
BaseDeveloper tools$0.012026-10-02
https://http-header-checker.underscoredone.com/check
Sends a request to a web address you provide and reports back everything the server said in response: the status code, all the response headers, how many times it got redirected, and how long the whole thing took.
BaseOther$0.012026-10-02
https://http-status-checker.underscoredone.com/check
Give this API a list of up to 10 web addresses and it will visit each one to tell you whether it is working, broken, or redirecting visitors somewhere else. You get back the exact status number (like 200 for OK, 404 for…
BaseDeveloper tools$0.012026-10-02
https://json-suite.underscoredone.com/json
Every agent and developer hits broken or confusing JSON. This tool handles the common headaches in one place: check whether JSON is valid with the exact error location, repair near-JSON with typos, pretty-print or minif…
BaseDeveloper tools$0.012026-10-02
https://leetspeak-translator.underscoredone.com/translate
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 prod…
BaseCommerce$0.012026-10-04
https://mortgage-amortization.underscoredone.com/calculate
Give this API a loan amount, an interest rate, and a repayment term, and it returns the exact monthly payment plus a full month-by-month schedule: interest paid, principal repaid, and balance remaining for every payment…
BaseMarket data$0.012026-10-02
https://ocr.underscoredone.com/read
Send a picture, either as a public web address or as base64-encoded image data, and get back the plain text found inside it.
BaseDeveloper tools$0.012026-09-25
https://port-scanner.underscoredone.com/scan
Give this API a hostname or IP address and it tries connecting to each port in your requested range. For every port that answers it reports whether it is open or blocked, which service is likely running there (a web ser…
BaseSecurity$0.012026-10-02
https://qr-code-generator.underscoredone.com/generate
Send a list of texts — website addresses, phone numbers, plain words, WiFi details, anything — and get back a ready-to-use QR code image for each one. Every QR code comes as a base64-encoded PNG you can drop straight in…
BaseIdentity$0.012026-10-02
https://seo-data-extractor.underscoredone.com/extract
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 headin…
BaseWeb data$0.012026-10-02
https://shopify-ai-rank-checker.underscoredone.com/rank
Checks how well a Shopify store's products show up when AI shopping assistants such as ChatGPT, Gemini, Perplexity, Grok, and Copilot search for products, and reports the store's rank and its closest competitors. Search…
BaseCommerce$0.012026-09-29
https://sitemap-url-extractor.underscoredone.com/extract
Give this API a link to any website's sitemap.xml file and it will fetch and parse it, returning every URL found inside. If the sitemap links to other sitemaps (called sitemap indexes), it will follow and extract those …
BaseDeveloper tools$0.012026-10-02
https://url-uptime-checker.underscoredone.com/check
Checks whether a website or web address is currently reachable and reports how fast it responded.
BaseOther$0.012026-10-04
https://screenshots.underscoredone.com/capture
Renders a webpage exactly as a real browser would, including all its scripts and dynamic content, then takes a picture of it. You can capture just the visible area or the whole scrollable page, choose the screen size, w…
BaseWeb data$0.022026-09-10

Descriptions are the seller’s own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.

Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.