x402watch

24,344 paid endpoints are listed. 23,484 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 2026-10-02 22:23 UTC · 24,344 probed

23,484 answering 402331 down405 rejecting124 no paywall2,437 price drift
  1. 96twin.unykorn.org/price/berachain-beraBerachain (BERA) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network$0.001 Base77 ms2 payers93% up
  2. 96twin.unykorn.org/geo/postal-codePostal/ZIP code lookup: city, state, coordinates (60+ countries) — Genesis402 / UnyKorn Operator Network$0.001 Base62 ms2 payers93% up
  3. 96twin.unykorn.org/geo/geocodeGeocode a place name to coordinates, country, timezone, population — Genesis402 / UnyKorn Operator Network$0.001 Base76 ms2 payers93% up
  4. 96twin.unykorn.org/geo/earthquakesRecent earthquakes worldwide (USGS): magnitude, place, depth, tsunami flag — Genesis402 / UnyKorn Operator Network$0.001 Base65 ms2 payers93% up
  5. 96twin.unykorn.org/geo/countryCountry facts: capital, currencies, languages, population, timezones, calling code — Genesis402 / UnyKorn Operator Network$0.001 Base64 ms2 payers93% up
  6. 96twin.unykorn.org/geo/air-qualityAir quality now: US AQI with health band, PM2.5, PM10, ozone, NO2, UV — Genesis402 / UnyKorn Operator Network$0.001 Base63 ms2 payers93% up
  7. 96twin.unykorn.org/evm-node-infoWhich client software is behind an RPC endpoint — Genesis402 / UnyKorn Operator Network$0.001 Base80 ms2 payers93% up
  8. 96twin.unykorn.org/evm-chain-idEIP-155 chain id, confirmed from the node itself — Genesis402 / UnyKorn Operator Network$0.001 Base63 ms2 payers93% up
  9. 96twin.unykorn.org/eth-unitsConvert between wei, gwei, ether and token units — Genesis402 / UnyKorn Operator Network$0.001 Base78 ms2 payers93% up
  10. 96twin.unykorn.org/eth-namehashENS namehash and labelhash for a name — Genesis402 / UnyKorn Operator Network$0.001 Base77 ms2 payers93% up
  11. 96twin.unykorn.org/erc20-symbolTicker symbol of a token contract — Genesis402 / UnyKorn Operator Network$0.001 Base85 ms2 payers93% up
  12. 96twin.unykorn.org/encode-urlPercent-encode and decode a string for URLs — Genesis402 / UnyKorn Operator Network$0.001 Base80 ms2 payers93% up
  13. 96twin.unykorn.org/encode-base64Base64 and base64url encoding of text or bytes — Genesis402 / UnyKorn Operator Network$0.001 Base80 ms2 payers93% up
  14. 96twin.unykorn.org/abi-function-selectorFunction selector from a Solidity signature — Genesis402 / UnyKorn Operator Network$0.001 Base86 ms2 payers93% up
  15. 96twin.unykorn.org/abi-event-topicEvent topic0 from a Solidity event signature — Genesis402 / UnyKorn Operator Network$0.001 Base81 ms2 payers93% up
  16. 96twin.unykorn.org/weighted-averageWeighted average, with the plain average for comparison — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  17. 96twin.unykorn.org/web/whoisDomain WHOIS/RDAP: registrar, created, expires, age, status, nameservers, DNSSEC — Genesis402 / UnyKorn Operator Network$0.002 Base69 ms2 payers93% up
  18. 96twin.unykorn.org/web/tls-certTLS/SSL certificate check: issuer, expiry, days left, SANs, trust, protocol — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  19. 96twin.unykorn.org/web/sitemapSitemap reader: list a site's URLs with lastmod (handles sitemap indexes) — Genesis402 / UnyKorn Operator Network$0.002 Base64 ms2 payers93% up
  20. 96twin.unykorn.org/web/rssRSS/Atom feed reader: latest items with titles, links, dates, summaries — Genesis402 / UnyKorn Operator Network$0.002 Base64 ms2 payers93% up
  21. 96twin.unykorn.org/web/ip-whoisIP address ownership (RDAP): network, organization, country, CIDR — Genesis402 / UnyKorn Operator Network$0.002 Base58 ms2 payers93% up
  22. 96twin.unykorn.org/storage-slot-mappingCompute the storage slot of a Solidity mapping entry — Genesis402 / UnyKorn Operator Network$0.002 Base83 ms2 payers93% up
  23. 96twin.unykorn.org/stellar-ledgerLatest Stellar ledger — height, close time, fees and throughput — Genesis402 / UnyKorn Operator Network$0.002 Base79 ms2 payers93% up
  24. 96twin.unykorn.org/stellar-fee-statsStellar fee statistics and surge-pricing state — Genesis402 / UnyKorn Operator Network$0.002 Base76 ms2 payers93% up
  25. 96twin.unykorn.org/solana-rent-exemptLamports needed to make a Solana account rent-exempt — Genesis402 / UnyKorn Operator Network$0.002 Base76 ms2 payers93% up
  26. 96twin.unykorn.org/solana-inflationCurrent Solana inflation rate split — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  27. 96twin.unykorn.org/solana-blockhashLatest Solana blockhash and how long it stays valid — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  28. 96twin.unykorn.org/slippage-calcSlippage between an expected and an actual fill — Genesis402 / UnyKorn Operator Network$0.002 Base72 ms2 payers93% up
  29. 96twin.unykorn.org/research/wikidata-searchWikidata entity search (find the Q-id for any person, company, place, thing) — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  30. 96twin.unykorn.org/research/wiki-summaryWikipedia article summary (lead section) by title — Genesis402 / UnyKorn Operator Network$0.002 Base62 ms2 payers93% up
  31. 96twin.unykorn.org/research/wiki-searchWikipedia search in any language edition — Genesis402 / UnyKorn Operator Network$0.002 Base66 ms2 payers93% up
  32. 96twin.unykorn.org/research/pypi-packagePyPI package facts: version, license, Python requirement, release date — Genesis402 / UnyKorn Operator Network$0.002 Base62 ms2 payers93% up
  33. 96twin.unykorn.org/research/crates-packageRust crate facts from crates.io: version, downloads, repo — Genesis402 / UnyKorn Operator Network$0.002 Base64 ms2 payers93% up
  34. 96twin.unykorn.org/records/vehicle-recallsVehicle safety recalls (NHTSA) by make, model and year — Genesis402 / UnyKorn Operator Network$0.002 Base68 ms2 payers93% up
  35. 96twin.unykorn.org/json-flattenFlatten nested JSON to leaf paths — Genesis402 / UnyKorn Operator Network$0.002 Base77 ms2 payers93% up
  36. 96twin.unykorn.org/geo/weather-forecastDaily weather forecast up to 16 days: highs, lows, rain chance, wind, UV, sunrise/sunset — Genesis402 / UnyKorn Operator Network$0.002 Base72 ms2 payers93% up
  37. 96twin.unykorn.org/geo/weather-alertsActive US weather alerts by state (NWS): warnings, watches, advisories — Genesis402 / UnyKorn Operator Network$0.002 Base84 ms2 payers93% up
  38. 96twin.unykorn.org/evm-priority-feeSuggested EIP-1559 priority fee (miner tip) — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  39. 96twin.unykorn.org/evm-nonceTransaction count (nonce) for one address — Genesis402 / UnyKorn Operator Network$0.002 Base64 ms2 payers93% up
  40. 96twin.unykorn.org/erc20-domain-separatorEIP-712 domain separator of a token — Genesis402 / UnyKorn Operator Network$0.002 Base89 ms2 payers93% up
  41. 96twin.unykorn.org/defi/token-pricesBatch token prices: up to 25 tokens in one call by CoinGecko id or chain:address — Genesis402 / UnyKorn Operator Network$0.002 Base67 ms2 payers93% up
  42. 96twin.unykorn.org/decode-jwtDecode a JWT's header and claims — WITHOUT verifying it — Genesis402 / UnyKorn Operator Network$0.002 Base79 ms2 payers93% up
  43. 96twin.unykorn.org/decode-bech32Decode and checksum-verify a bech32 or bech32m string — Genesis402 / UnyKorn Operator Network$0.002 Base76 ms2 payers93% up
  44. 96twin.unykorn.org/contract-pausedIs a Pausable contract currently paused — Genesis402 / UnyKorn Operator Network$0.002 Base83 ms2 payers93% up
  45. 96twin.unykorn.org/compound-growthFuture value with compounding and optional regular contributions — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  46. 96twin.unykorn.org/evm-storageRead one raw storage slot from any contract — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  47. 96twin.unykorn.org/evm-native-balanceNative coin balance for one address, on any of ten EVM chains — Genesis402 / UnyKorn Operator Network$0.002 Base62 ms2 payers93% up
  48. 96twin.unykorn.org/evm-gas-priceCurrent gas price on any of ten EVM chains — Genesis402 / UnyKorn Operator Network$0.002 Base78 ms2 payers93% up
  49. 96twin.unykorn.org/evm-codeIs this address a contract or an externally-owned account — Genesis402 / UnyKorn Operator Network$0.002 Base63 ms2 payers93% up
  50. 96twin.unykorn.org/calldata-splitSplit calldata into its selector and 32-byte words — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  51. 96twin.unykorn.org/btc-feesRecommended Bitcoin fee rates right now — Genesis402 / UnyKorn Operator Network$0.002 Base72 ms2 payers93% up
  52. 96twin.unykorn.org/btc-bits-to-targetExpand Bitcoin nBits into a target and difficulty — Genesis402 / UnyKorn Operator Network$0.002 Base78 ms2 payers93% up
  53. 96twin.unykorn.org/base58check-verifyVerify a base58check string and split out its version byte — Genesis402 / UnyKorn Operator Network$0.002 Base74 ms2 payers93% up
  54. 96twin.unykorn.org/apr-apyConvert between APR and APY at any compounding frequency — Genesis402 / UnyKorn Operator Network$0.002 Base77 ms2 payers93% up
  55. 96twin.unykorn.org/research/doiDOI lookup: citation metadata, authors, journal, citations, abstract — Genesis402 / UnyKorn Operator Network$0.002 Base62 ms2 payers93% up
  56. 96twin.unykorn.org/research/book-searchBook search (Open Library): titles, authors, first published, ISBNs — Genesis402 / UnyKorn Operator Network$0.002 Base66 ms2 payers93% up
  57. 96twin.unykorn.org/records/vin-decodeVIN decoder (NHTSA): make, model, year, trim, body, engine, fuel, plant — Genesis402 / UnyKorn Operator Network$0.002 Base75 ms2 payers93% up
  58. 96twin.unykorn.org/eth-rlp-encodeRLP-encode a value or nested list — Genesis402 / UnyKorn Operator Network$0.002 Base79 ms2 payers93% up
  59. 96twin.unykorn.org/eth-contract-addressPredict a contract address before it is deployed — Genesis402 / UnyKorn Operator Network$0.002 Base77 ms2 payers93% up
  60. 96twin.unykorn.org/eth-address-from-pubkeyDerive an Ethereum address from a public key — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  61. 96twin.unykorn.org/erc20-nonceEIP-2612 permit nonce for an owner — Genesis402 / UnyKorn Operator Network$0.002 Base77 ms2 payers93% up
  62. 96twin.unykorn.org/encode-packedSolidity abi.encodePacked equivalent — Genesis402 / UnyKorn Operator Network$0.002 Base67 ms2 payers93% up
  63. 96twin.unykorn.org/address-identifyWhich chain does this address belong to, and is it well-formed — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  64. 96twin.unykorn.org/abi-encodeABI-encode a list of typed parameters — Genesis402 / UnyKorn Operator Network$0.002 Base79 ms2 payers93% up
  65. 96twin.unykorn.org/abi-decodeABI-decode return data against declared types — Genesis402 / UnyKorn Operator Network$0.002 Base83 ms2 payers93% up
  66. 96twin.unykorn.org/solana-token-balanceBalance of one specific SPL token account — Genesis402 / UnyKorn Operator Network$0.003 Base80 ms2 payers93% up
  67. 96twin.unykorn.org/solana-supplySolana total and circulating SOL supply — Genesis402 / UnyKorn Operator Network$0.003 Base72 ms2 payers93% up
  68. 96twin.unykorn.org/solana-priority-feesRecent Solana priority fees, summarised — Genesis402 / UnyKorn Operator Network$0.003 Base71 ms2 payers93% up
  69. 96twin.unykorn.org/research/wikidata-entityStructured facts about an entity from Wikidata (founders, HQ, CEO, website, ticker, inception...) — Genesis402 / UnyKorn Operator Network$0.003 Base64 ms2 payers93% up
  70. 96twin.unykorn.org/research/openalex-searchOpenAlex scholarly search: works with citations and open-access links — Genesis402 / UnyKorn Operator Network$0.003 Base72 ms2 payers93% up
  71. 96twin.unykorn.org/research/arxiv-searcharXiv paper search: titles, authors, abstracts, PDF links — Genesis402 / UnyKorn Operator Network$0.003 Base63 ms2 payers93% up
  72. 96twin.unykorn.org/records/treasury-yieldsUS Treasury yield curve (1m-30y) with 10y-2y spread and inversion flag — Genesis402 / UnyKorn Operator Network$0.003 Base63 ms2 payers93% up
  73. 96twin.unykorn.org/records/sec-filingsSEC filings list with direct document links, filterable by form (10-K, 10-Q, 8-K, S-1, 13F...) — Genesis402 / UnyKorn Operator Network$0.003 Base62 ms2 payers93% up
  74. 96twin.unykorn.org/records/fda-recallsFDA recalls and enforcement reports: food, drugs, devices — Genesis402 / UnyKorn Operator Network$0.003 Base75 ms2 payers93% up
  75. 96twin.unykorn.org/native-priceCurrent USD price of a major coin by name — Genesis402 / UnyKorn Operator Network$0.003 Base83 ms2 payers93% up
  76. 96twin.unykorn.org/merkle-rootMerkle root over a list of leaves — Genesis402 / UnyKorn Operator Network$0.003 Base83 ms2 payers93% up
  77. 96twin.unykorn.org/json-diffStructural difference between two JSON values — Genesis402 / UnyKorn Operator Network$0.003 Base84 ms2 payers93% up
  78. 96twin.unykorn.org/evm-receiptTransaction receipt — did it succeed, what did it cost, what did it emit — Genesis402 / UnyKorn Operator Network$0.003 Base62 ms2 payers93% up
  79. 96twin.unykorn.org/evm-estimate-gasEstimate the gas a transaction would use, before signing it — Genesis402 / UnyKorn Operator Network$0.003 Base74 ms2 payers93% up
  80. 96twin.unykorn.org/evm-callSimulate any read-only contract call — Genesis402 / UnyKorn Operator Network$0.003 Base63 ms2 payers93% up
  81. 96twin.unykorn.org/evm-blockBlock header by number, with age and gas utilisation worked out — Genesis402 / UnyKorn Operator Network$0.003 Base83 ms2 payers93% up
  82. 96twin.unykorn.org/erc721-token-uriMetadata URI for one ERC721 token — Genesis402 / UnyKorn Operator Network$0.003 Base81 ms2 payers93% up
  83. 96twin.unykorn.org/erc721-token-of-ownerThe Nth token id an address owns in a collection — Genesis402 / UnyKorn Operator Network$0.003 Base81 ms2 payers93% up
  84. 96twin.unykorn.org/erc721-approved-for-allHas an owner granted an operator control of their whole collection — Genesis402 / UnyKorn Operator Network$0.003 Base82 ms2 payers93% up
  85. 96twin.unykorn.org/erc721-approvedWhich address is approved to move one NFT — Genesis402 / UnyKorn Operator Network$0.003 Base80 ms2 payers93% up
  86. 96twin.unykorn.org/erc20-balanceERC20 token balance for one holder — Genesis402 / UnyKorn Operator Network$0.003 Base76 ms2 payers93% up
  87. 96twin.unykorn.org/erc20-allowanceHow much a spender is approved to move from an owner — Genesis402 / UnyKorn Operator Network$0.003 Base66 ms2 payers93% up
  88. 96twin.unykorn.org/erc165-supportsDoes a contract declare support for an ERC165 interface — Genesis402 / UnyKorn Operator Network$0.003 Base80 ms2 payers93% up
  89. 96twin.unykorn.org/erc1155-uriMetadata URI for one ERC1155 token id — Genesis402 / UnyKorn Operator Network$0.003 Base79 ms2 payers93% up
  90. 96twin.unykorn.org/defi/token-price-historyToken price history: daily or hourly USD series up to 1 year — Genesis402 / UnyKorn Operator Network$0.003 Base65 ms2 payers93% up
  91. 96twin.unykorn.org/defi/stablecoinsStablecoin market: circulating supply, peg price and depeg for every stablecoin — Genesis402 / UnyKorn Operator Network$0.003 Base61 ms2 payers93% up
  92. 96twin.unykorn.org/defi/stablecoinOne stablecoin: supply by chain, peg price and depeg — Genesis402 / UnyKorn Operator Network$0.003 Base64 ms2 payers93% up
  93. 96twin.unykorn.org/defi/chain-tvl-historyDaily TVL history for one chain (up to 2 years) — Genesis402 / UnyKorn Operator Network$0.003 Base63 ms2 payers93% up
  94. 96twin.unykorn.org/btc-block-at-heightBlock hash at a given Bitcoin height — Genesis402 / UnyKorn Operator Network$0.003 Base85 ms2 payers93% up
  95. 96twin.unykorn.org/btc-difficultyBitcoin difficulty adjustment progress and estimate — Genesis402 / UnyKorn Operator Network$0.003 Base80 ms2 payers93% up
  96. 96twin.unykorn.org/records/sec-companySEC EDGAR company profile: CIK, industry, exchanges, fiscal year, latest filings — Genesis402 / UnyKorn Operator Network$0.003 Base60 ms2 payers93% up
  97. 96twin.unykorn.org/ai/sentimentSentiment analysis with score, emotions and per-aspect sentiment — Genesis402 / UnyKorn Operator Network$0.003 Base69 ms2 payers93% up
  98. 96twin.unykorn.org/research/paper-searchScholarly paper search across 150M+ Crossref records — Genesis402 / UnyKorn Operator Network$0.003 Base67 ms2 payers93% up
  99. 96twin.unykorn.org/records/federal-registerUS Federal Register search: rules, proposed rules, notices, executive orders — Genesis402 / UnyKorn Operator Network$0.003 Base65 ms2 payers93% up
  100. 96twin.unykorn.org/records/fda-drug-labelFDA drug label: indications, dosage, warnings, boxed warning, contraindications — Genesis402 / UnyKorn Operator Network$0.003 Base65 ms2 payers93% up