chain.openverbs.com
Base · payout 0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a
Answers HTTP 402
69 of 121 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.
x402-style payments, last 7 days (Base)
615 x402-style payments from 15 distinct payers, $9.75 USDC in the last 7 days (Base, exact read)
window ended 2026-10-05
- Payments
- 615
- Outside payers
- 15
- USDC
- 9.75
All USDC received at this payout address: $9.75 (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
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a | 408 | 69 of 121 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-05 | 615 x402-style payments from 15 distinct payers, $9.75 USDC in the last 7 days (Base, exact read) |
- Hosts
- airport.openverbs.com, astro.openverbs.com, bitwise.openverbs.com, braille.openverbs.com, chain.openverbs.com, checkdigit.openverbs.com, checksum.openverbs.com, chem.openverbs.com, chemeq.openverbs.com, color.openverbs.com, combinatorics.openverbs.com, creditcard.openverbs.com, crypto.openverbs.com, data.openverbs.com, datetime.openverbs.com, dice.openverbs.com, dictionary.openverbs.com, distribution.openverbs.com, dns.openverbs.com, edgar.openverbs.com, email.openverbs.com, emailauth.openverbs.com, emoji.openverbs.com, encoding.openverbs.com, finance.openverbs.com, format.openverbs.com, fraction.openverbs.com, fx.openverbs.com, geocode.openverbs.com, geometry.openverbs.com, geospatial.openverbs.com, gleif.openverbs.com, hash.openverbs.com, holidays.openverbs.com, html.openverbs.com, iban.openverbs.com, ical.openverbs.com, id.openverbs.com, inflect.openverbs.com, ip.openverbs.com, iso.openverbs.com, jsonschema.openverbs.com, jwt.openverbs.com, macaddress.openverbs.com, markdown.openverbs.com, math.openverbs.com, matrix.openverbs.com, mcpscan.openverbs.com, mime.openverbs.com, money.openverbs.com, music.openverbs.com, nato.openverbs.com, numeral.openverbs.com, numtheory.openverbs.com, otp.openverbs.com, pack.openverbs.com, password.openverbs.com, pdf.openverbs.com, phone.openverbs.com, physics.openverbs.com, places.openverbs.com, postal.openverbs.com, preflight.openverbs.com, products.openverbs.com, qr.openverbs.com, random.openverbs.com, rdap.openverbs.com, readability.openverbs.com, regex.openverbs.com, scan.openverbs.com, search.openverbs.com, semver.openverbs.com, sentiment.openverbs.com, seo.openverbs.com, similarity.openverbs.com, slug.openverbs.com, spreadsheet.openverbs.com, stats.openverbs.com, text.openverbs.com, timecode.openverbs.com, tls.openverbs.com, tokens.openverbs.com, unicode.openverbs.com, unit.openverbs.com, url.openverbs.com, urltrust.openverbs.com, useragent.openverbs.com, vat.openverbs.com, wallet.openverbs.com, web.openverbs.com, wikidata.openverbs.com
- Listings
- 408 registered in the x402 catalogue
- Price range
- $0.0010 to $0.060 per call, as registered
- Categories (auto)
- Developer tools (141), Other (113), Onchain data (38), Web data (30), Identity (21), Media (17), Market data (14), Search (13), Commerce (12), Security (6), Inference (3)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0xb3f4de…c2194a 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 · 408
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://datetime.openverbs.com/v1/parse Parse an ISO 8601 duration such as 'P1Y2M10DT2H30M' into its components. Returns a normalized ISO string and totalSeconds — but totalSeconds is null when the duration contains years or months, because those are calendar… | Base | Developer tools | $0.002 | 2026-09-06 |
https://dice.openverbs.com/v1/parse Parse dice notation such as "3d6+2", "4d6kh3" (keep highest 3) or "2d20dl1" (drop lowest 1) into structured terms. Malformed notation is a clean 400. | Base | Developer tools | $0.002 | 2026-09-06 |
https://dice.openverbs.com/v1/roll Roll dice notation with a cryptographically secure RNG, optionally repeated. Returns per-die rolls, the kept dice and the total for each roll. | Base | Developer tools | $0.002 | 2026-09-06 |
https://dice.openverbs.com/v1/stats Compute the exact probability distribution of a dice notation — mean, variance, standard deviation, min/max and the full probability mass function — with no sampling. Notations whose outcome range is too large for exact… | Base | Developer tools | $0.002 | 2026-09-06 |
https://dictionary.openverbs.com/v1/antonyms Return the antonyms (opposites) of an English word, aggregated across all its senses. Optionally filter by part of speech. An unknown word returns found:false with a 200. | Base | Other | $0.002 | 2026-10-05 |
https://dictionary.openverbs.com/v1/define Look up the definitions of an English word. Returns one entry per sense with its part of speech, definition, example sentences and synonyms. Optionally filter by part of speech. An unknown word returns found:false with … | Base | Other | $0.002 | 2026-10-05 |
https://dictionary.openverbs.com/v1/synonyms Return the synonyms of an English word, aggregated across all its senses. Optionally filter by part of speech. An unknown word returns found:false with a 200. | Base | Other | $0.002 | 2026-10-05 |
https://emoji.openverbs.com/v1/flag Build the flag emoji for an ISO 3166-1 alpha-2 country code from its regional-indicator symbols (e.g. "US" → 🇺🇸). Non two-letter codes are clean 400s. | Base | Other | $0.002 | 2026-09-06 |
https://emoji.openverbs.com/v1/info Given an emoji character (or any string), return its code points and — if known — its name, category, shortcodes and tags. An unknown emoji is a successful result with `known:false`, not an error. | Base | Other | $0.002 | 2026-10-05 |
https://emoji.openverbs.com/v1/lookup Resolve an emoji by its shortcode (e.g. "smile" or ":smile:") or exact name. Provide exactly one field. Returns the emoji, its metadata and code points. | Base | Other | $0.002 | 2026-09-06 |
https://emoji.openverbs.com/v1/search Fuzzy-search emoji by name, shortcode or keyword tag, ranked exact → prefix → substring. | Base | Other | $0.002 | 2026-10-05 |
https://encoding.openverbs.com/v1/detect Guess the character set of a base64-encoded byte buffer: sniffs a byte-order mark, then falls back to ASCII / UTF-8 validation and a UTF-16 NUL-pattern heuristic. Returns a best-effort charset with a confidence label — … | Base | Developer tools | $0.002 | 2026-09-06 |
https://encoding.openverbs.com/v1/inspect Break a string into its Unicode code points, each with its U+ notation, decimal value and UTF-8 / UTF-16 byte layout, plus total byte lengths. | Base | Developer tools | $0.002 | 2026-10-05 |
https://encoding.openverbs.com/v1/normalize Apply a Unicode normalisation form (NFC, NFD, NFKC or NFKD) to a string. Reports whether the text changed and its length in UTF-16 code units and code points. | Base | Developer tools | $0.002 | 2026-10-05 |
https://encoding.openverbs.com/v1/transcode Decode a base64 byte buffer from one character set and re-encode it into another (utf-8, utf-16le, utf-16be, latin1, ascii). Characters that the target set cannot represent, or bytes invalid for the source set, are clea… | Base | Developer tools | $0.002 | 2026-09-06 |
https://fraction.openverbs.com/v1/arithmetic Add, subtract, multiply or divide two fractions and return the exact, fully-reduced result. All computation is done in BigInt so there is no floating-point error. Dividing by a zero fraction is a clean 400. | Base | Other | $0.002 | 2026-10-05 |
https://fraction.openverbs.com/v1/from-decimal Convert a decimal string to an exact reduced fraction. For a repeating decimal, set repeat to the number of trailing fractional digits that repeat (e.g. value='0.1666', repeat=1 → 1/6; value='0.3', repeat=1 → 1/3). A no… | Base | Developer tools | $0.002 | 2026-09-06 |
https://fraction.openverbs.com/v1/simplify Reduce a fraction to lowest terms and describe it: numerator/denominator (denominator normalized positive), sign, whether it is an integer, and a mixed-number form when improper. A zero denominator is a clean 400. | Base | Developer tools | $0.002 | 2026-10-05 |
https://fraction.openverbs.com/v1/to-decimal Expand a fraction to its decimal form by exact long division, detecting a repeating cycle and rendering it in parenthesis notation (e.g. 1/6 → '0.1(6)', 1/7 → '0.(142857)'). maxDigits caps a non-repeating expansion. A z… | Base | Media | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/distance Distance and initial bearing between two coordinates. | Base | Other | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/forward Project WGS84 longitude/latitude (degrees) to Web Mercator (EPSG:3857) easting/northing in metres. Latitude is clamped to ±85.0511° (the projection's valid extent). | Base | Other | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/from-mgrs Convert an MGRS grid reference back to decimal lat/lon on WGS84 (the coordinate of the grid cell's south-west corner at the given precision). Whitespace is ignored; a malformed reference is a clean 400. | Base | Media | $0.002 | 2026-09-06 |
https://geospatial.openverbs.com/v1/from-utm Convert a UTM coordinate (zone, hemisphere, easting, northing) back to decimal lat/lon on WGS84. | Base | Media | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/geohash Encode a coordinate to a geohash and return its bounding box and 8 neighbors. | Base | Developer tools | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/inverse Un-project Web Mercator (EPSG:3857) easting/northing in metres back to WGS84 longitude/latitude in degrees. | Base | Other | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/mgrs Convert decimal lat/lon to a Military Grid Reference System (MGRS) string on WGS84. Precision is the number of digits per axis (1–5; 5 = 1-metre resolution, default 5). | Base | Developer tools | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/parse Parse a coordinate string into decimal lat/lon. Accepts a plain decimal pair ('40.4462, -79.9822') or DMS with hemisphere letters ('40°26'46"N 79°58'56"W'). Anything unrecognized is a clean 400. | Base | Developer tools | $0.002 | 2026-09-06 |
https://geospatial.openverbs.com/v1/point-in-polygon Test whether a coordinate falls inside a polygon. | Base | Developer tools | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/resolution Report the ground resolution (metres per pixel, for 256-px tiles) and the OGC map scale denominator at a zoom level, optionally adjusted for latitude (default equator). | Base | Other | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/tile Map a WGS84 coordinate at a given zoom (0..30) to its slippy-map (XYZ / Google / OSM) tile x,y and its Bing quadkey. | Base | Other | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/tile-bounds Compute the geographic bounding box (west/south/east/north in degrees) of a slippy-map tile z/x/y, plus its Bing quadkey. | Base | Developer tools | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/timezone Resolve the timezone for a latitude/longitude. | Base | Developer tools | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/to-dms Convert a decimal-degree latitude/longitude to degrees-minutes-seconds, with hemisphere letters and a formatted string for each axis. | Base | Commerce | $0.002 | 2026-10-05 |
https://geospatial.openverbs.com/v1/utm Convert decimal lat/lon to a UTM coordinate (zone, latitude band, hemisphere, easting, northing) on WGS84, including the Norway/Svalbard zone exceptions. Defined for latitudes -80..84. | Base | Media | $0.002 | 2026-10-05 |
https://hash.openverbs.com/v1/hash Compute a cryptographic digest (SHA-2, SHA-3, BLAKE2, and legacy SHA-1/MD5/RIPEMD-160) of some data. The input may be utf8/hex/base64/base64url and the digest is returned as hex/base64/base64url. | Base | Developer tools | $0.002 | 2026-10-05 |
https://hash.openverbs.com/v1/hmac Compute a keyed HMAC of some data with a secret key — the standard way to sign and verify webhooks (Stripe, GitHub, etc.) and API requests. Data and key may each be utf8/hex/base64/base64url; the tag is returned as hex/… | Base | Developer tools | $0.002 | 2026-10-05 |
https://holidays.openverbs.com/v1/check Check whether a specific date is a public holiday in a country (optionally by state/region). | Base | Other | $0.002 | 2026-09-06 |
https://holidays.openverbs.com/v1/list List a country's holidays for a calendar year (optionally by state/region, language and type). | Base | Other | $0.002 | 2026-09-06 |
https://html.openverbs.com/v1/decode Decode HTML entities (named, decimal and hex numeric references) back into plain text. | Base | Developer tools | $0.002 | 2026-10-05 |
https://html.openverbs.com/v1/encode Encode text to HTML entities so it can be safely embedded in markup. By default uses hex numeric references; set useNamedReferences for named entities (&, ©) or encodeEverything to encode every character. | Base | Developer tools | $0.002 | 2026-10-05 |
https://html.openverbs.com/v1/sanitize Sanitize untrusted HTML to a safe allowlist. Keeps common formatting and links but removes dangerous scripting tags, inline event handlers and unsafe URL schemes. Ideal for rendering user-supplied HTML. | Base | Developer tools | $0.002 | 2026-10-05 |
https://html.openverbs.com/v1/strip Remove all HTML tags, returning the plain text content. Entities are decoded to real characters by default (set decodeEntities=false to keep them encoded). | Base | Web data | $0.002 | 2026-10-05 |
https://ical.openverbs.com/v1/create Build a valid .ics document from event fields (summary, start/end, location, …). | Base | Other | $0.002 | 2026-10-04 |
https://ical.openverbs.com/v1/expand Expand an RRULE recurrence rule into its occurrence datetimes, with a human-readable description. | Base | Other | $0.002 | 2026-09-06 |
https://ical.openverbs.com/v1/parse Parse an .ics document into structured calendar events (summary, times, location, RRULE, attendees). | Base | Developer tools | $0.002 | 2026-09-06 |
https://id.openverbs.com/v1/decode Validate a ULID and extract its embedded timestamp and time/random components. | Base | Developer tools | $0.002 | 2026-10-05 |
https://id.openverbs.com/v1/inspect Validate a UUID and report its version and variant. | Base | Developer tools | $0.002 | 2026-10-05 |
https://id.openverbs.com/v1/ulid Generate one or more lexicographically sortable ULIDs (monotonic within a call). | Base | Other | $0.002 | 2026-10-05 |
https://id.openverbs.com/v1/uuid Generate one or more UUIDs. Supports v4 (random), v1/v7 (time), and v3/v5 (namespaced). | Base | Developer tools | $0.002 | 2026-10-05 |
https://inflect.openverbs.com/v1/case Split an identifier or phrase into words and render it in every common case — camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Title Case and Sentence case. Handles acronyms (HTMLParser… | Base | Media | $0.002 | 2026-10-05 |
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.