x402watch

52,953 paid endpoints are listed. 27,123 answered a real 402 at the last check.

Every x402 endpoint on the Coinbase Bazaar and x402scan, probed unpaid every six hours. A listing tells you the price a seller wrote down. This tells you whether the endpoint is reachable, whether it charges what it declared, and how fast it answers. Ranked by an assay score out of 100.

Last check 2026-10-05 06:00 UTC · 52,953 probed

27,123 answering 40219,794 down5,154 rejecting882 no paywall1,829 price drift
  1. 92cm-record.org/apiOne paid call on cm-record.org for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://cm-record.org/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base605 ms1 payers100% up
  2. 92pay.brianbooms.com/api/v1/buy/agent-wallpaper-golden-godraysAgent Wallpaper — Golden Godrays ($0.05 USDC on Base, Polygon, Arbitrum, or Avalanche via x402). Machine purchase: one cosmic wallpaper JPG (16:9). Download URL returned in the settlement response, instantly. For agent use. Music made with Suno — disclosed. Automatic fulfillment after settlement. Pay to 0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839.$0.05 Base653 ms1 payers100% up
  3. 92allooloo.io/apiOne paid call on allooloo.io for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://allooloo.io/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base374 ms1 payers100% up
  4. 92kyp-model.ai/apiOne paid call on kyp-model.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://kyp-model.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base388 ms1 payers100% up
  5. 92cm-record.io/apiOne paid call on cm-record.io for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://cm-record.io/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base738 ms1 payers100% up
  6. 92cm-record.ai/apiOne paid call on cm-record.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://cm-record.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base519 ms1 payers100% up
  7. 92cm-kg.org/apiOne paid call on cm-kg.org for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://cm-kg.org/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base482 ms1 payers100% up
  8. 92cm-kg.io/apiOne paid call on cm-kg.io for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://cm-kg.io/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base741 ms1 payers100% up
  9. 92capitalmarketsknowledgegraph.org/apiOne paid call on capitalmarketsknowledgegraph.org for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://capitalmarketsknowledgegraph.org/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base632 ms1 payers100% up
  10. 92capitalmarketsknowledgegraph.ai/apiOne paid call on capitalmarketsknowledgegraph.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://capitalmarketsknowledgegraph.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base670 ms1 payers100% up
  11. 92us-cm-kg.ai/apiOne paid call on us-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://us-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base746 ms1 payers100% up
  12. 92uk-cm-kg.ai/apiOne paid call on uk-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://uk-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base673 ms1 payers100% up
  13. 92sg-cm-kg.ai/apiOne paid call on sg-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://sg-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base879 ms1 payers100% up
  14. 92kr-cm-kg.ai/apiOne paid call on kr-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://kr-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base965 ms1 payers100% up
  15. 92jp-cm-kg.ai/apiOne paid call on jp-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://jp-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base893 ms1 payers100% up
  16. 92hk-cm-kg.ai/apiOne paid call on hk-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://hk-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base965 ms1 payers100% up
  17. 92fr-cm-kg.ai/apiOne paid call on fr-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://fr-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base970 ms1 payers100% up
  18. 92de-cm-kg.ai/apiOne paid call on de-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://de-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base964 ms1 payers100% up
  19. 92ch-cm-kg.ai/apiOne paid call on ch-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://ch-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base789 ms1 payers100% up
  20. 92au-cm-kg.ai/apiOne paid call on au-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://au-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base974 ms1 payers100% up
  21. 92agentic-trades.ai/apiOne paid call on agentic-trades.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://agentic-trades.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base906 ms1 payers100% up
  22. 92agentic-registries.ai/apiOne paid call on agentic-registries.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://agentic-registries.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.$0.01 Base994 ms1 payers100% up
  23. 92138-197-9-7.sslip.io/v1/uk_company_counterparty_preflightUK Companies House company-level counterparty preflight: status, RO, accounts/confirmation overdue → NORMAL|REVIEW|NOT_FOUND$0.01 Base815 ms1 payers100% up
  24. 92predict.memoryapi.org/x402/predict/platform_arbFind prediction market arbitrage across Polymarket, Kalshi, and Manifold.$0.001 Base538 ms1 payers100% up
  25. 92percallapi.com/newsSearch real-time breaking news, market events, and press releases via the Brave News index. Returns fresh articles, publishers, and timestamps. Provide ?q=topic.$0.01 Base906 ms1 payers100% up
  26. 92percallapi.com/caller-idLookup registered caller name (CNAM identity), real-time line status (active vs. inactive), telecom carrier, and line type via Twilio. Provide ?phone=+14157012311.$0.04 Base839 ms1 payers100% up
  27. 92scout.hugen.tokyo/scout/phSearch Product Hunt for new products, SaaS launches, and developer tools. AI agent API for market research and competitive intelligence. Accepts USDC payments on Base and Solana$0.01 Base804 ms1 payers100% up
  28. 92gotobi.hugen.tokyo/gotobi/todayIs today a Japanese gotobi day? Gotobi (五十日: 5th, 10th, 15th, 20th, 25th, last business day) drive predictable USDJPY buying pressure before the 9:55 JST Nakane fixing. Weekend and holiday adjustments applied automatically. No public database of gotobi dates exists — this is the only programmatic source. Accepts USDC payments on Base and Solana$0.01 Base850 ms1 payers100% up
  29. 92predict.memoryapi.org/x402/predict/mispricingDetect prediction market outcome mispricings — find markets where real-world outcome is already determined but market price is wrong$0.01 Base654 ms1 payers100% up
  30. 92orbylon.com/api/call/orbylon.com/full-scanFull scan of any website, from orbylon.com. Settles directly to the business. You are not charged if the call does not work.$0.05 Base986 ms1 payers100% up
  31. 92medien.halowerk.com/v1/diarizeTakes an audio or video file by URL or inline base64 and reports who spoke when. Every turn comes back with its speaker label, start and end time, duration, word count and text, and consecutive words from the same speaker are merged into one turn rather than left as a word list.$0.025 Base692 ms1 payers100% up
  32. 92klima.halowerk.com/v1/electricity-co2Calculates location- or market-based electricity emissions from a published grid factor. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.$0.003 Base724 ms1 payers100% up
  33. 92dep.halowerk.com/v1/deprecation-checkChecks current registry metadata for deprecated, yanked or removed releases. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.003 Base488 ms1 payers100% up
  34. 92fracht.halowerk.com/v1/container-checkValidates the ISO 6346 check digit and separates owner, category and serial components. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.003 Base549 ms1 payers100% up
  35. 92zoll.halowerk.com/v1/customs-valueCalculates 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 method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.$0.004 Base834 ms1 payers100% up
  36. 92zoll.halowerk.com/v1/cbam-scopeChecks 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; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.$0.004 Base836 ms1 payers100% up
  37. 92aialign.halowerk.com/v1/capability-evalComputes weighted pass rates and weighted scores from caller-labeled test outcomes, with deterministic category summaries. It does not run tests, validate labels, measure untested capabilities or establish deployment safety; the result is only as representative as the supplied evaluation set.$0.003 Base688 ms1 payers100% up
  38. 92aialign.halowerk.com/v1/agent-collusionRequires 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 a supplied threshold. Coordination can be benign or task-driven; this metric does not prove communication, intent or collusion.$0.005 Base658 ms1 payers100% up
  39. 92api.verigrace.com:4451/api/contract-gatePre-trade contract safety gate: static analysis of verified Solidity source + on-chain metadata. Returns pass/fail verdict + red flag checklist (reentrancy, unchecked calls, owner privs, delegatecall, oracle single-point, rug vectors, age). Pay-per-check: 0.25 USDC on Base via x402. Source: Blockscout + Base RPC (public data only).$0.25 Base605 ms1 payers100% up
  40. 92api.verigrace.com:4450/api/tax-reportOn-chain realized PnL + FIFO tax cost-basis report for any Base wallet. Per-asset holdings, FIFO realized gain/loss with event-time price interpolation, taxable event ledger, mark-to-market USD. Structured JSON for accountants. Pay-per-report: 1.00 USDC on Base via x402. Source: Blockscout + CoinGecko (public data only).$1.00 Base575 ms1 payers100% up
  41. 92prop.halowerk.com/v1/foot-traffic-retailCompares supplied visits, mean dwell time and conversions with explicit baselines and combines the three ratios using caller-supplied weights. It does not collect location data, count people, infer demographics or forecast demand. Inputs should be aggregated and lawfully collected.$0.003 Base672 ms1 payers100% up
  42. 92prop.halowerk.com/v1/flood-risk-assetMultiplies 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 curves, price insurance or predict a particular event.$0.004 Base661 ms1 payers100% up
  43. 92api.verigrace.com:4445/api/kyc-scanKYC / PEP / 制裁筛查窄数据源（Base 上按次付费，0.02 USDC/call；演示数据源，非合规结论）$0.02 Base528 ms1 payers100% up
  44. 92agri.halowerk.com/v1/fertilizer-mapFor each field cell, subtracts measured available nutrient from a supplied target and divides positive deficits by an explicit recovery fraction. It reports per-hectare rates and area totals. It does not infer crop targets, validate laboratory samples, account for nutrient chemistry or constitute an agronomic application prescription.$0.004 Base622 ms1 payers100% up
  45. 92agri.halowerk.com/v1/drone-spray-pathBuilds parallel passes over an axis-aligned rectangle using supplied swath width and overlap, alternating travel direction to reduce deadhead distance. Coordinates are in caller-supplied local units. It does not use maps, terrain, wind, obstacles, battery limits, no-fly zones, chemical rules or flight-control integration.$0.004 Base596 ms1 payers100% up
  46. 92creator.halowerk.com/v1/fan-engagementWeights likes, comments, shares, saves and clicks, divides by supplied reach, and reports cohort and aggregate points per thousand reached accounts. It does not access a platform, distinguish authentic from manipulated activity, measure sentiment or predict revenue.$0.003 Base595 ms1 payers100% up
  47. 92creator.halowerk.com/v1/deepfake-scoreNormalizes caller-supplied blink deviation, lip-sync error, spectral discontinuity, compression inconsistency and metadata anomaly using declared fixed weights. It does not inspect media, establish authenticity, identify a generator or replace human forensic review; the result is only as reliable as the supplied signals.$0.003 Base531 ms1 payers100% up
  48. 92x402.911fund.io/alpha/newsCross-source crypto news intelligence with impact scoring, token mapping, and anomaly detection.$0.02 Base566 ms1 payers100% up
  49. 92bio.halowerk.com/v1/crispr-offtargetCompares one guide with caller-supplied candidate protospacers, weights mismatches in the guide’s final ten positions twice, applies a simple NGG PAM penalty, and ranks a transparent similarity score. It does not search a genome, model bulges, chromatin or nuclease-specific biology, and must not be used as a clinical or laboratory safety decision.$0.004 Base518 ms1 payers100% up
  50. 92bio.halowerk.com/v1/biomarker-longevityStandardizes each supplied value against its supplied mean and standard deviation, flips markers whose favorable direction is lower, and computes a weighted composite mapped to a bounded 0–100 index. The references and weights come entirely from the caller; this is not a validated longevity score, diagnosis, prognosis or medical advice.$0.003 Base522 ms1 payers100% up
  51. 92bio.halowerk.com/v1/allergen-epitopeBuilds amino-acid k-mer sets, calculates Jaccard similarity, and finds the highest contiguous identity between each supplied epitope and any equal-length window of the query. It does not predict immune binding, allergenicity, cross-reactivity or clinical risk and cannot replace curated databases or laboratory testing.$0.004 Base517 ms1 payers100% up
  52. 92sicher.halowerk.com/v1/webhook-signatureProviders each build their signing string differently — some sign only the body, others prepend a timestamp, an id, or a version marker in a fixed order — and getting that order wrong produces a mismatch that looks exactly like an attack. This checks the signature the way the named provider actually specifies, with constant-time comparison, and returns the string that was signed so a mismatch can be debugged instead of guessed at.$0.002 Base653 ms1 payers100% up
  53. 92natur.halowerk.com/v1/river-gaugeReturns 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 the requested reference period: the minimum, median and maximum, and the percentile the current reading falls at. The reference period is stated with the comparison, because a percentile without a window is not a statistic.$0.004 Base655 ms1 payers100% up
  54. 92natur.halowerk.com/v1/water-qualityRetrieves 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 mixed case, and combining them unchecked puts factor-of-thousand errors into any statistic built on top.$0.005 Base692 ms1 payers100% up
  55. 92prop.halowerk.com/v1/yield-forecastCompounds supplied rent and expense growth assumptions, applies vacancy and collection loss, subtracts operating expenses and capital reserve, and divides net operating income by a caller-supplied property value. This is scenario arithmetic, not a valuation, market forecast, investment recommendation, tax calculation or guarantee of income.$0.003 Base508 ms1 payers100% up
  56. 92stat.halowerk.com/v1/inflation-divergenceReturns 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 consumer price indices use different baskets, treat owner-occupied housing differently and rest on different base years, so placing them side by side produces a comparison that looks valid because everything is expressed in percent and is not.$0.006 Base502 ms1 payers100% up
  57. 92bio.halowerk.com/v1/syn-yeast-yieldDivides each available substrate mass by its required mass per product mass, selects the limiting substrate, and applies a caller-supplied process efficiency. It does not model yeast metabolism, kinetics, oxygen transfer, toxicity, regulation or actual fermentation performance.$0.003 Base509 ms1 payers100% up
  58. 92agent.halowerk.com/v1/memory-compactTakes 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_roles, the last keep_last_n messages, and anything you marked pin), dedupe removes later near-duplicates of an earlier message of the same role using word-overlap similarity, trim shortens unprotected survivors to max_message_chars at the last sentence boundary, and drop removes…$0.005 Base575 ms1 payers100% up
  59. 92paket.halowerk.com/v1/artifact-hashTakes a file digest and answers which released package version it is. Useful for an artefact found in a container layer, a build directory or an attachment with no metadata attached. Hex and base64 input are both accepted and normalised, the digest length is checked against the declared algorithm before anything is fetched, and the response names every matching package version, since one artefact can be published under more than one coordinate.$0.003 Base670 ms1 payers100% up
  60. 92agri.halowerk.com/v1/seed-germinationComputes the observed germination rate and a Wilson score interval from germinated and tested counts using a supplied normal critical value. It does not correct sampling bias, test vigor, identify disease or predict field emergence.$0.002 Base493 ms1 payers100% up
  61. 92solar.halowerk.com/low-wattage-cookingUses rated electrical power, food mass, start and target temperature, specific heat and an explicit efficiency range supplied by the caller. Optional vessel heat, evaporation and a caller-defined hold phase can be included. It contains no recipes, recipe text, food-specific cooking claims or hidden food database; the output separates the thermodynamic lower bound from the practical range and is not a food-safety clearance.$0.003 Base533 ms1 payers100% up
  62. 92iot.halowerk.com/v1/lora-coverageComputes free-space loss at one metre, applies a caller-supplied path-loss exponent over distance, then reports estimated receive power and margin against receiver sensitivity. This planning estimate does not model terrain, Fresnel obstruction, interference, antenna mismatch or regulatory duty cycle.$0.003 Base497 ms1 payers100% up
  63. 92space.halowerk.com/v1/satellite-passPropagates 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, epoch-dependent Greenwich angle, refraction, ellipsoid shape, terrain, and antenna masks, so it is a planning estimate rather than operational ephemeris.$0.004 Base515 ms1 payers100% up
  64. 92handel.halowerk.com/v1/registry-snapshotLooks 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 like 6QQB and the register as RA000304, so both are resolved against the GLEIF code lists into the legal form in its own language and the competent register with its website.$0.005 Base646 ms1 payers100% up
  65. 92med.halowerk.com/v1/ingredient-equivalenceResolves 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 is listed individually rather than collapsed into a verdict, and matching ingredients with differing strengths are reported as such rather than as a match.$0.006 Base689 ms1 payers100% up
  66. 92stat.halowerk.com/v1/cross-border-bankingReturns 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 silently. The separation matters: a jurisdiction showing large claims and large liabilities is intermediating, not lending, and reporting only a net figure hides the gross exposure that actually fails in a crisis.$0.006 Base671 ms1 payers100% up
  67. 92quantum.halowerk.com/v1/entanglement-testConverts ++, +−, −+ 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 demonstrate entanglement or close detection, locality, sampling or significance loopholes.$0.004 Base523 ms1 payers100% up
  68. 92greenhouse-jobs-snapshot-sepolia.boshfred.workers.dev/snapshotDeterministic public Greenhouse job-board snapshot: sorted job IDs, titles, locations, listing URLs, timestamps and content hash. One board, up to 500 jobs. Base Sepolia test USDC only; 0.001 per successful snapshot.$0.001 Base Sepolia697 ms1 payers100% up
  69. 92quantum.halowerk.com/v1/circuit-optimizeCancels 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 hardware topology, synthesize arbitrary unitaries or prove global optimality.$0.004 Base513 ms1 payers100% up
  70. 92space.halowerk.com/v1/debris-collisionPropagates 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, maneuver uncertainty, tracking error, and nonlinear dynamics and is not an operational conjunction assessment.$0.004 Base497 ms1 payers100% up
  71. 92space.halowerk.com/v1/dark-fleet-detectCombines caller-supplied AIS gap duration, unmatched satellite detections, night-observation fraction, and position discrepancy into a bounded score. It does not identify a vessel, link detections, establish illegal activity, or replace maritime intelligence review.$0.003 Base493 ms1 payers100% up
  72. 92gaming.halowerk.com/v1/cross-game-bridgeApplies caller-supplied rename and numeric scale/offset rules to scalar attributes, optionally retaining unmapped fields, then hashes the canonical mapped payload. It does not transfer ownership, call a chain, validate either game, preserve semantics, or authorize asset use.$0.004 Base488 ms1 payers100% up
  73. 92gaming.halowerk.com/v1/asset-proceduralMaps a seed and asset category to declared silhouette, material, palette, symmetry, and detail parameters. The result is a machine-readable design specification only; it does not render geometry, textures, animation, or production-ready art.$0.003 Base483 ms1 payers100% up
  74. 92gov.halowerk.com/v1/quadratic-funding-calcCaps 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 Sybil identities, move funds, or decide project eligibility.$0.004 Base468 ms1 payers100% up
  75. 92gov.halowerk.com/v1/delegate-alignmentJoins caller-supplied vote vectors by proposal ID, encodes against/abstain/for as -1/0/1, and computes weighted cosine similarity plus exact agreement. It describes only supplied overlapping votes and does not infer ideology or future behavior.$0.003 Base456 ms1 payers100% up
  76. 92iot.halowerk.com/v1/device-authCanonicalizes device_id, nonce and message, computes an HMAC-SHA256 tag with caller-supplied ephemeral key material, and optionally compares a claimed tag in constant time. It does not provision devices, store keys or replace asymmetric device identity; do not submit long-lived production secrets.$0.002 Base416 ms1 payers100% up
  77. 92iot.halowerk.com/v1/battery-degradationApplies a transparent heuristic: cycle fade scales with equivalent full cycles and depth-of-discharge exponent; calendar fade scales with square-root time and a temperature factor. Coefficients are caller supplied or declared defaults. This is not cell-chemistry validation, warranty advice or a safety prognosis.$0.003 Base431 ms1 payers100% up
  78. 92paket.halowerk.com/v1/package-versionsReturns the full version history of a package from a single normalised schema that covers seven ecosystems. Versions are ordered by semantic version, not alphabetically and not in registry order, so 1.10.0 sorts after 1.9.0 — the mistake that quietly breaks naive comparisons. For each version you get the publication timestamp, whether it is the registry default, whether it is deprecated and the deprecation reason as the registry states it.$0.003 Base361 ms1 payers100% up
  79. 92material.halowerk.com/copper-co2Multiplies the copper quantity by literature emission factors for the chosen secondary route and for primary cathode production, and reports the difference as low, typical and high. The factors are published life cycle averages and are stated in the response; they are not a certified product carbon footprint and are not a valid basis for a carbon credit, a customer declaration or an audited claim.$0.002 Base460 ms1 payers100% up
  80. 92iot.halowerk.com/v1/ota-signCanonicalizes firmware hash, version, device model and minimum bootloader version, then produces a SHA-256 manifest digest and HMAC-SHA256 release tag using caller-supplied ephemeral key material. This is a symmetric integrity tag, not a vendor PKI signature or code-signing service.$0.003 Base436 ms1 payers100% up
  81. 92gov.halowerk.com/v1/snapshot-verifySorts unique scalar key/value entries through canonical JSON serialization and computes SHA-256. It verifies byte-level agreement with an optional claimed digest only; it does not prove block inclusion, timestamp, signer identity, or chain consensus.$0.002 Base466 ms1 payers100% up
  82. 92space.halowerk.com/v1/orbit-decayUses 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 altitude and solar activity; the result is not a lifetime prediction or maneuver plan.$0.004 Base354 ms1 payers100% up
  83. 92quantum.halowerk.com/v1/molecule-simComputes 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 bonds or predict experimental molecular behavior.$0.004 Base434 ms1 payers100% up
  84. 92ident.halowerk.com/v1/sms-receiveCreates 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; an HTTPS bearer-token lease provider can also implement the documented generic contract. Messages and lease metadata are removed after expiry.$0.006 Base459 ms1 payers100% up
  85. 92solar.halowerk.com/building-heat-demandComputes 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, ventilation heat loss from heated volume and air changes, monthly heating degree days from the nearest DWD 1991-2020 temperature-normal station, stated internal gains and optional domestic hot water.$0.004 Base302 ms1 payers100% up
  86. 92material.halowerk.com/awg-metricUses the geometric AWG definition, so results are exact for solid round conductors. Mass per metre and resistance follow from the material density and resistivity at 20 degrees Celsius; stranded conductors carry roughly two to five percent more mass and resistance per metre than the same nominal size and are not modelled separately. Supply either awg or cross_section_mm2, not both. Sizes 4/0 through 40 AWG are covered.$0.001 Base456 ms1 payers100% up
  87. 92geo.halowerk.com/v1/utm-mgrsConverts 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 disclose source, time window and age. $0.004 Base456 ms1 payers100% up
  88. 92geo.halowerk.com/v1/s2-cellCreates an S2 cell token from a coordinate and level using the S2 geometry library. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base465 ms1 payers100% up
  89. 92geo.halowerk.com/v1/polygon-opsCalculates planar polygon area and centroid in caller-declared coordinate units. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base462 ms1 payers100% up
  90. 92geo.halowerk.com/v1/point-in-polygonTests planar point containment with the even-odd rule. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base452 ms1 payers100% up
  91. 92geo.halowerk.com/v1/line-simplifySimplifies a planar line with the Ramer-Douglas-Peucker algorithm. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base464 ms1 payers100% up
  92. 92fracht.halowerk.com/v1/port-pairEstimates great-circle port distance and sailing time from supplied port coordinates and speed. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base438 ms1 payers100% up
  93. 92fracht.halowerk.com/v1/package-dimsCalculates volume, girth and chargeable weight from package dimensions. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base468 ms1 payers100% up
  94. 92fracht.halowerk.com/v1/leg-splitValidates and orders caller-supplied multimodal shipment legs. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base466 ms1 payers100% up
  95. 92dep.halowerk.com/v1/release-cadenceCalculates release intervals and inactivity from current registry timestamps. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base434 ms1 payers100% up
  96. 92dep.halowerk.com/v1/registry-healthSummarizes caller-supplied registry observations and withdrawal history. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base450 ms1 payers100% up
  97. 92dep.halowerk.com/v1/maintainer-concentrationMeasures the share held by the largest maintainer from supplied ownership weights. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base458 ms1 payers100% up
  98. 92dep.halowerk.com/v1/install-footprintTotals caller-measured installed file sizes and file counts. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.004 Base454 ms1 payers100% up
  99. 92geo.halowerk.com/v1/geohashEncodes a coordinate as geohash or decodes a geohash to its bounding box. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. $0.003 Base452 ms1 payers100% up
  100. 92modell.halowerk.com/v1/llm-catalogA 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 price, by the context window you need, or by capability tag. Every row carries the date its prices were last checked, so a stale figure is visible rather than silently wrong.$0.005 Base481 ms1 payers100% up