Sato Hub

x402 · merchants

crawlspur.halowerk.com

Base · payout 0x2880edfff13100677bf97a3cbdf3bc34771c4e5e

Answers HTTP 402

52 of 54 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.

221 x402-style payments from 13 distinct payers, $0.92 USDC in the last 7 days (Base, exact read)

window ended 2026-10-05

Payments
221
Outside payers
13
USDC
0.92

All USDC received at this payout address: $0.92 (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
Base0x2880edfff13100677bf97a3cbdf3bc34771c4e5e40452 of 54 probed endpoints answered HTTP 402 with a parseable payment payload
2026-10-05
221 x402-style payments from 13 distinct payers, $0.92 USDC in the last 7 days (Base, exact read)
Hosts
agent.halowerk.com, agri.halowerk.com, aialign.halowerk.com, audio.halowerk.com, bio.halowerk.com, buero.halowerk.com, crawlspur.halowerk.com, creator.halowerk.com, dep.halowerk.com, dns.halowerk.com, energy.halowerk.com, euroland.halowerk.com, fetch.halowerk.com, finanz.halowerk.com, formwerk.halowerk.com, fracht.halowerk.com, gaming.halowerk.com, geo.halowerk.com, gov.halowerk.com, handel.halowerk.com, ident.halowerk.com, intel.halowerk.com, iot.halowerk.com, ip.halowerk.com, kalender.halowerk.com, kalender.netzhandwerker.de, karte.halowerk.com, kette.halowerk.com, klima.halowerk.com, lauf.halowerk.com, mail.halowerk.com, mailcheck.netzhandwerker.de, markt.halowerk.com, material.halowerk.com, med.halowerk.com, medien.halowerk.com, modell.halowerk.com, natur.halowerk.com, netz.halowerk.com, news.netzhandwerker.de, nordland.halowerk.com, paket.halowerk.com, prop.halowerk.com, quantum.halowerk.com, research.halowerk.com, seo.halowerk.com, shot.halowerk.com, shot.netzhandwerker.de, sicher.halowerk.com, solar.halowerk.com, space.halowerk.com, stack.netzhandwerker.de, staking.halowerk.com, stat.halowerk.com, tempo.halowerk.com, tools.halowerk.com, vektor.halowerk.com, vektor.netzhandwerker.de, wetter.halowerk.com, x402.halowerk.com, zoll.halowerk.com
Listings
404 registered in the x402 catalogue
Price range
$0.0010 to $0.060 per call, as registered
Categories (auto)
Other (184), Web data (80), Developer tools (59), Identity (26), Media (21), Market data (10), Commerce (6), Inference (5), Onchain data (5), Agents (4), Security (3), Search (1)
First seen
2026-10-05 · last seen 2026-10-05

Claim this merchant

Sign a message from the payout address 0x2880ed…1c4e5e 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 · 404

EndpointChainCategoryPriceCatalogue date
https://geo.halowerk.com/v1/utm-mgrs
Converts WGS84 latitude and longitude to MGRS using the open mgrs library. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values …
BaseMedia$0.0042026-09-12
https://gov.halowerk.com/v1/quadratic-funding-calc
Caps individual contributions when requested, computes each project’s raw quadratic match as (sum sqrt(contribution))² minus direct contributions, and allocates a fixed matching pool proportionally. It does not detect S…
BaseSecurity$0.0042026-09-16
https://iot.halowerk.com/v1/digital-twin-sync
Groups caller-supplied scalar field changes by field name, selects the highest version, and reports a conflict when equal-version values differ. It does not connect to a twin platform, merge nested documents or resolve …
BaseOther$0.0042026-10-02
https://kette.halowerk.com/contract/verification
Checks one address on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB Smart Chain against the open verification registry and against the chain itself. For a proxy the answer is deliberately split in two: whether the …
BaseOnchain data$0.0042026-10-04
https://klima.halowerk.com/v1/cbam-factor
Selects and applies a supplied published CBAM default factor for a goods group. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed va…
BaseOther$0.0042026-09-27
https://natur.halowerk.com/v1/earthquake-brief
Returns a single earthquake in decision-ready form, either by its USGS event identifier or as the most significant event matching a search. Magnitude is reported with the magnitude type, because moment magnitude and loc…
BaseOther$0.0042026-09-12
https://natur.halowerk.com/v1/river-gauge
Returns the latest instantaneous values at a USGS streamgage, together with what makes them readable. A stage of three point four feet means nothing on its own, so each value is placed against the station own record for…
BaseOther$0.0042026-09-19
https://netz.halowerk.com/v1/bgp-origin
Resolves a prefix to its announcing autonomous systems and puts that answer in context. The current state gives every origin AS seen for the prefix, the number of more specific and less specific prefixes routed alongsid…
BaseOther$0.0042026-10-02
https://netz.halowerk.com/v1/prefix-visibility
Reports the propagation of a prefix as the fraction of RIS observers that see it, separately for IPv4 and IPv6, because the absolute peer count moves with the size of the measurement network and is not comparable across…
BaseWeb data$0.0042026-10-04
https://prop.halowerk.com/v1/flood-risk-asset
Multiplies each mutually exclusive supplied scenario probability by its supplied damage fraction and asset replacement value, then sums expected loss. It does not obtain hazard maps, model hydrology, validate damage cur…
BaseOther$0.0042026-09-23
https://prop.halowerk.com/v1/zoning-intel
Calculates floor-area ratio and lot coverage and compares use, height, parking and geometry with an explicit caller-supplied rule set. It does not retrieve or interpret current law, resolve overlays or variances, establ…
BaseDeveloper tools$0.0042026-09-14
https://quantum.halowerk.com/v1/circuit-optimize
Cancels adjacent identical self-inverse gates on identical ordered targets and folds adjacent RX, RY or RZ rotations on identical targets. It preserves only these local identities; it does not commute gates, model hardw…
BaseMedia$0.0042026-09-19
https://quantum.halowerk.com/v1/entanglement-test
Converts ++, +−, −+ and −− counts into a correlation for each of AB, AB′, A′B and A′B′, then computes S = E(AB) + E(AB′) + E(A′B) − E(A′B′). A value above the classical bound in supplied data does not by itself demonstr…
BaseDeveloper tools$0.0042026-09-19
https://quantum.halowerk.com/v1/molecule-sim
Computes all pair distances and a single-parameter Lennard-Jones 12-6 potential using caller-supplied epsilon and sigma. It does not perform quantum chemistry, infer element-specific force fields, relax geometry, model …
BaseOther$0.0042026-09-14
https://shot.halowerk.com/screenshot
Viewport or full page, optional element selector, dark mode and cookie banner removal. Returns base64 image plus a short lived fetch URL, byte size, load time and the final HTTP status of the page.
BaseWeb data$0.0042026-09-14
https://solar.halowerk.com/building-heat-demand
Computes a transparent planning estimate for space-heating demand. The method is not DIN, VDI, GEG or PHPP and must not be used as regulatory proof. It combines transmission heat loss from each envelope component, venti…
BaseOther$0.0042026-09-14
https://space.halowerk.com/v1/debris-collision
Propagates two caller-supplied Cartesian states with constant velocity, analytically finds the clamped time of closest approach, and compares miss distance with combined hard-body radius. It ignores gravity, covariance,…
BaseOther$0.0042026-09-18
https://space.halowerk.com/v1/orbit-decay
Uses da/dt = -rho×sqrt(mu×a)/ballistic_coefficient for a circular orbit, holds density and ballistic coefficient constant, and linearly projects altitude over a bounded horizon. Real density changes rapidly with altitud…
BaseOther$0.0042026-09-14
https://space.halowerk.com/v1/satellite-pass
Propagates a circular two-body orbit from altitude, inclination, RAAN, and initial orbital phase; rotates Earth at a fixed sidereal rate; and samples ground-station elevation. It ignores eccentricity, perturbations, epo…
BaseOther$0.0042026-09-19
https://tools.halowerk.com/v1/hs/classify
Ordnet eine Warenbeschreibung der sechsstelligen Harmonisierten Nomenklatur der Weltzollorganisation zu, 6.940 Positionen. Versteht deutsche Warenbezeichnungen einschliesslich zusammengesetzter Woerter ueber einen Fachw…
BaseInference$0.0042026-10-04
https://tools.halowerk.com/v1/route/matrix
Berechnet Entfernung und Fahrzeit zwischen bis zu 25 Punkten, wahlweise als volle Matrix oder als Start-Ziel-Kreuz. Nimmt Koordinaten oder Anschriften und geokodiert sie selbst. Nutzt freie Streckendaten auf Basis von O…
BaseOther$0.0042026-10-04
https://zoll.halowerk.com/v1/cbam-scope
Checks a CN-code prefix against a caller-supplied extract of the published CBAM goods list. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; sour…
BaseWeb data$0.0042026-09-24
https://zoll.halowerk.com/v1/customs-value
Calculates customs value under the transaction-value method from disclosed additions and deductions. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their met…
BaseDeveloper tools$0.0042026-09-25
https://agent.halowerk.com/v1/memory-compact
Takes a message history and a character budget and returns a shortened history together with a full account of what it cost. Four stages run in fixed order: pin protects messages that must survive (roles listed in keep_…
BaseAgents$0.0052026-09-19
https://aialign.halowerk.com/v1/agent-collusion
Requires the same agents in each supplied round, computes each pair’s observed action agreement, expected agreement from marginal action frequencies and chance-corrected kappa, then flags high positive agreement against…
BaseOther$0.0052026-09-23
https://finanz.halowerk.com/v1/commodity-snapshot
Day-ahead power prices for a European bidding zone from Energy-Charts, published by Fraunhofer ISE from Bundesnetzagentur SMARD data under CC BY 4.0 and therefore usable commercially with attribution. Returns the quarte…
BaseMarket data$0.0052026-09-08
https://handel.halowerk.com/v1/allergen-check
Returns what a product declares about allergens: the allergen tags, the trace warnings, the ingredients text in its original language, and the completeness of the record. The distinction it holds to throughout is betwee…
BaseCommerce$0.0052026-10-05
https://handel.halowerk.com/v1/registry-snapshot
Looks up a legal entity in GLEIF, the worldwide Legal Entity Identifier register, by LEI or by name, and turns the raw record into an answer. GLEIF returns keys rather than statements: the legal form arrives as a code l…
BaseOther$0.0052026-09-19
https://handel.halowerk.com/v1/slotting-plan
Takes a warehouse as a table and returns a placement. You supply the storage locations with their walking distance to the pick-and-drop point and, where they exist, their weight and volume limits; you supply the SKUs wi…
BaseOther$0.0052026-10-02
https://intel.halowerk.com/v1/memory/export
Ein bezahlter Aufruf liefert alle nicht abgelaufenen Einträge des Zahlers als JSON-Lines. Die verifizierte Zahleradresse ist der Eigentümer; Ergebnisse und gespeicherte Daten sind strikt auf diesen Zahler begrenzt.
BaseAgents$0.0052026-10-05
https://karte.halowerk.com/v1/ev-charging
Queries OpenStreetMap for charging stations within a radius of a point and returns each with its position, distance, operator, network, connector types with their individual power ratings and socket counts, access restr…
BaseOther$0.0052026-10-05
https://modell.halowerk.com/v1/llm-catalog
A comparison table of language models: input, output and cache prices per million tokens, context window, maximum output length, batch discount and a short note on what each is suited to. Filter by vendor, by a maximum …
BaseInference$0.0052026-09-12
https://natur.halowerk.com/v1/water-quality
Retrieves water quality results for a monitoring site from the Water Quality Portal and normalises them into a comparable shape. The real work is units: the same measurement appears there as mg/L, ug/L, ppm and mg/l in …
BaseDeveloper tools$0.0052026-09-19
https://research.halowerk.com/v1/dataset-discovery
Searches the official EU open data portal and returns datasets with what decides whether they are usable: the licence, classified by whether commercial reuse is allowed and what attribution or share-alike it demands. A …
BaseInference$0.0052026-10-02
https://sicher.halowerk.com/v1/log-chain-verify
Recomputes every record hash from a canonical JSON representation of id, sequence, timestamp, previous_hash and payload, then checks that each record points to the hash of the record before it. If a root_hash is supplie…
BaseDeveloper tools$0.0052026-09-14
https://wetter.halowerk.com/ensemble
Single models are everywhere. This is the disagreement between them: per hour a median with a p15/p85 band, the full min/max spread, how many models still carry that hour, an agreement score, rain probability derived fr…
BaseOther$0.0052026-10-02
https://audio.halowerk.com/voice-evidence
Returns measured evidence about a recording, not a verdict on it. The spectral cut-off says which lossy stages the file has already been through, since every encoder discards everything above its own ceiling. The room t…
BaseMedia$0.0062026-10-02
https://fetch.halowerk.com/contacts
Read the mandatory public disclosure of one domain and return company, postal address, e-mail, phone, VAT and register data with a source for every value.
BaseIdentity$0.0062026-10-04
https://handel.halowerk.com/v1/container-load
Loads a package list into one loading space and returns the plan, not an estimate. The floor starts as one free surface; packages are sorted by footprint, then height, then weight, then identifier, and each one is place…
BaseDeveloper tools$0.0062026-09-07
https://ident.halowerk.com/v1/sms-receive
Creates a five-minute inbound SMS lease through a configured licensed provider, polls received messages, and releases the number upstream on cancellation, expiry or failed x402 settlement. Twilio is supported directly; …
BaseOther$0.0062026-09-14
https://med.halowerk.com/v1/ingredient-equivalence
Resolves two products to their RxNorm concepts and compares what the register declares about each: the active ingredient set, the strength per ingredient, the dose form and the route of administration. Every difference …
BaseCommerce$0.0062026-09-19
https://natur.halowerk.com/v1/noise-level
Queries the Sensor.Community live area feed, keeps the newest noise reading per outdoor sensor within the requested radius, and returns nearest readings plus median, p10 and p90 LAeq. It never converts missing sensors i…
BaseOther$0.0062026-09-14
https://shot.netzhandwerker.de/snapshot
One page load answers everything an agent needs to reason about a page: the DOM after JavaScript capped at 2 MB, the CDP accessibility tree flattened with parent references, every link with rel and target and an interna…
BaseOther$0.0062026-10-04
https://stat.halowerk.com/v1/credit-cycle
Reports the credit-to-GDP gap for a country, which is the deviation of the credit ratio from its long-run trend and the quantity the Basel framework uses to trigger the countercyclical capital buffer. The thresholds app…
BaseMarket data$0.0062026-10-02
https://stat.halowerk.com/v1/cross-border-banking
Returns the outstanding cross-border positions of banks located in a reporting country against counterparties in another, from the BIS locational banking statistics, split into claims and liabilities and never netted si…
BaseOther$0.0062026-09-19
https://stat.halowerk.com/v1/inflation-divergence
Returns harmonised consumer price inflation for several countries over a period, taken entirely from the European harmonised index so the numbers are actually comparable. That constraint is the product: national consume…
BaseMarket data$0.0062026-09-19
https://x402.halowerk.com/channel/audit
Checks vouchers of a payment channel by computation only - nothing is ever claimed, redeemed or refunded. Signatures are verified cryptographically against the address each voucher claims to be signed by, in EIP-712 for…
BaseOther$0.0062026-09-19
https://research.halowerk.com/v1/supply-chain-pulse
For each node you name — a port, a plant, a corridor, a supplier — the service counts reporting on five disruption themes over a recent window and compares it against the same term own longer baseline. Self-referential …
BaseOnchain data$0.0072026-10-01
https://fetch.halowerk.com/product/compare
Compare two to four product pages by verified identity, listed price, availability, shipping cost and rating without converting currencies.
BaseCommerce$0.012026-10-02
https://lauf.halowerk.com/v1/form-dryrun
Loads a public https page, finds the requested form, fills your values into it in a real headless browser and reports what a submission would run into — without submitting. Each field is checked against what the page it…
BaseOther$0.012026-10-02

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.