x402watch

22,001 paid endpoints are listed. 21,144 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 05:45 UTC · 22,001 probed

21,144 answering 402279 down455 rejecting123 no paywall2,416 price drift
  1. 96twin.unykorn.org/json-canonicalCanonical JSON and its digest — Genesis402 / UnyKorn Operator Network$0.002 Base91 ms3 payers93% up
  2. 96scry.solanahub.de/x402/network/priority-fees-live$0.005 Solana232 ms3 payers100% up
  3. 96x402.aispace.bot/api/v1/audio/queueAsync music/audio-track generation on Venice (Stable Audio, ElevenLabs Music, MiniMax, Lyria, ACE-Step), paid per request in USDC on Base via x402, no API key. Short-clip model ids via GET /api/v1/models?type=music; 60s-floor ids (ACE-Step) only with ?floor=all. Lifecycle: quote,$0.095 Base179 ms2 payers93% up
  4. 96netintel.dev/openai/gpt-4oCall OpenAI's gpt-4o via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.10 per request in USDC. Standard OpenAI chat.completions shape. EVERY call is bounded by a 16000-token combined input budget (real tokenizer) plus the 48000-char cap; output 2048. Vision: up to 4 https image_url parts (detail low/high/auto).$0.10 Base105 ms2 payers93% up
  5. 96vaaya.ai/api/run/tavily/searchTavily — AI-native web search tuned for RAG: ranked results with relevance scores, optional LLM answer synthesis. Pass `query`; optional `topic` (general|news|finance), `max_results` (1-20), `include_answer` (true = synthesized answer), `include_raw_content` (true|"markdown" = full page text per hit), `include_domains`/`exclude_domains`, `time_range` (day|week|month|year), `country`. Alternative to exa/search (semantic recall) and brave/search (keyword index).$0.01 Basedown2 payers93% up
  6. 96cryptyx.ai/api/x402/healthService health probe — build version, last pipeline run, current signal/composite/asset counts. Sub-second, no DB writes. The cheapest end-to-end pay-per-call check before issuing real queries.$0.01 Base136 ms2 payers93% up
  7. 96cryptyx.ai/api/signals/topTop 10 atomic signals ranked by 7-day cross-sectional IC, gated to A/B health grades and non-anti-predictive names. Each carries trigger stats and a 7d walk-forward IS/OOS robustness block. Runs across 200+ digital assets — BTC, ETH, SOL, top-cap + long-tail coverage.$0.01 Base193 ms2 payers93% up
  8. 96agent.pocket.network/v1/dns-whois-rdapDomain intelligence: DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) plus RDAP registration data. POST /v1/dns with a {domain} and get the records and registration as one JSON object. Deterministic per lookup instant. Pay per request in USDC; no account, no API key.$0.005 Base143 ms2 payers93% up
  9. 96toll402.dev/v1/readFetch any public web page (or PDF) and return clean, LLM-ready Markdown with title, metadata and links. Boilerplate, ads and scripts removed.$0.002 Baseno paywall2 payers93% up
  10. 96flat-rate-llm.kikoribera03.workers.dev/v1/content/jokeOne random joke, in English or Spanish, filtered by category: programming, crypto or general. Unlike the usual one-liner endpoints this one takes parameters, returns an id so you can exclude what you have already seen, and accepts a seed for a reproducible answer.$0.005 Base26 ms2 payers93% up
  11. 96flat-rate-llm.kikoribera03.workers.dev/v1/util/verify-signatureRecovers the address that signed a personal_sign (EIP-191) message and tells you whether it matches the address you expected. This is how you prove a wallet is controlled by whoever is talking to you.$0.005 Basedown2 payers93% up
  12. 96flat-rate-llm.kikoribera03.workers.dev/v1/random/pickPick one or more items at random from a list you send, with or without repeats. The list is yours, so this is the unbiased chooser an agent needs when it has options and no reason to prefer any.$0.005 Basedown2 payers93% up
  13. 96flat-rate-llm.kikoribera03.workers.dev/v1/util/hexConverts between hex, decimal and UTF-8 text in one call, with big integers handled exactly. For reading raw RPC output, which comes back as hex and overflows a JavaScript number.$0.005 Base27 ms2 payers93% up
  14. 96flat-rate-llm.kikoribera03.workers.dev/v1/util/base64Base64 in both directions, including the URL-safe alphabet, with UTF-8 handled properly. Encoding is what carries payloads through headers and JSON, and x402 itself rides on it.$0.005 Base25 ms2 payers93% up
  15. 96flat-rate-llm.kikoribera03.workers.dev/v1/time/nowThe current time in any IANA time zone, in every form an agent needs at once: ISO with offset, 24-hour, 12-hour, weekday, unix timestamp and UTC. It also says whether daylight saving is active right now and what the zone's standard offset is, so a shifted clock can be told apart from a permanent one.$0.005 Base41 ms2 payers93% up
  16. 96flat-rate-llm.kikoribera03.workers.dev/v1/random/shuffleShuffle a list into a uniformly random order with Fisher-Yates over the platform CSPRNG. Every permutation is equally likely, which sorting by a random key does not give you.$0.005 Basedown2 payers93% up
  17. 96flat-rate-llm.kikoribera03.workers.dev/v1/evm/storageReads a raw storage slot of any contract, decoded as hex, integer and address. How you inspect proxy implementation slots, owners and paused flags that have no public getter. Via eth_getStorageAt.$0.005 Base227 ms2 payers93% up
  18. 96agent.pocket.network/v1/contract-abiVerified EVM contract source and ABI across 6 chains, with EIP-1967 proxy detection. POST /v1/evm with a contract {address, chain_id} and get its verified source, ABI, and proxy resolution as one JSON object. Deterministic per upstream verification state. Pay per request in USDC; no account, no API key.$0.005 Base142 ms2 payers93% up
  19. 96agent.pocket.network/v1/patents-trademarksSearch USPTO patents and trademarks: applications, grants, classifications, and status. POST /v1/patents with a {query} and get matching records as one JSON object. Deterministic per dataset. Pay per request in USDC; no account, no API key.$0.005 Base142 ms2 payers93% up
  20. 96toll402.dev/v1/lookupAnswer from TRUSTED sources only (Wikipedia, Wikidata, arXiv, Crossref/DOI, World Bank): returns passages with URL, reliability tier and retrieval time for citation. With synthesize=true you also get an LLM answer that cites the passages and admits when they don't contain the answer.$0.01 Base83 ms2 payers93% up
  21. 96agentbit.app/v1/memory/counterAtomic per-agent integer counter (incr/decr/get/set/reset), scoped to the paying wallet. For tallies, quotas, sequence numbers.$0.001 Base200 ms2 payers93% up
  22. 96agentbit.app/v1/memoryPrivate key/value memory for an agent: remember values across calls (set/get/delete/list/exists), scoped to the paying wallet.$0.001 Base193 ms2 payers93% up
  23. 96agentbit.app/v1/kits/crypto-traderOne call, the whole pre-trade picture: crypto market sentiment (Fear & Greed + global stats), live Base gas/block, optional token price(s) and related prediction-market odds. A bundled decision snapshot for trading agents, $0.01.$0.01 Base202 ms2 payers93% up
  24. 96agentbit.app/v1/uuid/generateGenerate a random RFC 4122 version 4 UUID. Unique identifiers for records, requests and idempotency keys.$0.0015 Base299 ms2 payers93% up
  25. 96agentbit.app/v1/text/slugifyConvert any string into a URL slug: ASCII, lower-cased, dashes for separators. For permalinks, filenames and stable ids.$0.0015 Base203 ms2 payers93% up
  26. 96agentbit.app/v1/encode/urlRFC 3986 percent-encode an input string for safe use in URLs, query strings and path segments (spaces become %20).$0.0015 Base199 ms2 payers93% up
  27. 96agentbit.app/v1/finance/sec-filingsRecent SEC EDGAR filings for a US public company by ticker or CIK, optionally filtered by form (10-K, 10-Q, 8-K, ...). Returns form, filing/report dates, accession number and a direct document URL. Free public source, $0.01.$0.01 Base233 ms2 payers93% up
  28. 96twin.unykorn.org/solana-slotCurrent Solana slot — Genesis402 / UnyKorn Operator Network$0.001 Base252 ms2 payers93% up
  29. 96twin.unykorn.org/encode-base32RFC 4648 base32 encoding — Genesis402 / UnyKorn Operator Network$0.001 Base249 ms2 payers93% up
  30. 96api.zerion.io/v1/wallets/:address/portfolio$0.01 Base150 ms2 payers100% up
  31. 96minia2a.uk/x402/ruleOf72minia2a service: x402-rule-of72$0.01 Base155 ms2 payers93% up
  32. 96minia2a.uk/x402/rps-strategyminia2a service: x402-rps-strategy$0.01 Base154 ms2 payers93% up
  33. 96minia2a.uk/x402/chain-registryminia2a service: x402-chain-registry$0.01 Base160 ms2 payers93% up
  34. 96minia2a.uk/x402/base32minia2a service: x402-base32$0.01 Base158 ms2 payers93% up
  35. 96twin.unykorn.org/xrpl-server-infoXRP Ledger network state — validated ledger, load and base fee — Genesis402 / UnyKorn Operator Network$0.001 Base82 ms2 payers93% up
  36. 96twin.unykorn.org/xrpl-currency-decodeDecode an XRPL 40-hex currency code to its ticker — Genesis402 / UnyKorn Operator Network$0.001 Base79 ms2 payers93% up
  37. 96twin.unykorn.org/uuid-v5Deterministic UUID v5 from a name — Genesis402 / UnyKorn Operator Network$0.001 Base89 ms2 payers93% up
  38. 96twin.unykorn.org/time-convertConvert between unix time and ISO 8601, with drift against now — Genesis402 / UnyKorn Operator Network$0.001 Base83 ms2 payers93% up
  39. 96twin.unykorn.org/text-statsByte, character, word and line counts for a string — Genesis402 / UnyKorn Operator Network$0.001 Base84 ms2 payers93% up
  40. 96twin.unykorn.org/random-bytesCryptographically secure random bytes, nonce and UUID — Genesis402 / UnyKorn Operator Network$0.001 Base86 ms2 payers93% up
  41. 96twin.unykorn.org/percent-changePercentage and multiple change between two values — Genesis402 / UnyKorn Operator Network$0.001 Base83 ms2 payers93% up
  42. 96twin.unykorn.org/hash-sha512SHA-512 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base85 ms2 payers93% up
  43. 96twin.unykorn.org/hash-sha384SHA-384 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base83 ms2 payers93% up
  44. 96twin.unykorn.org/hash-sha3-512SHA3-512 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base77 ms2 payers93% up
  45. 96twin.unykorn.org/hash-sha3-256SHA3-256 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base87 ms2 payers93% up
  46. 96twin.unykorn.org/hash-sha256SHA-256 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base85 ms2 payers93% up
  47. 96twin.unykorn.org/hash-sha224SHA-224 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base82 ms2 payers93% up
  48. 96twin.unykorn.org/hash-sha1SHA-1 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base81 ms2 payers93% up
  49. 96twin.unykorn.org/hash-ripemd160RIPEMD-160 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base76 ms2 payers93% up
  50. 96twin.unykorn.org/hash-double-sha256Bitcoin HASH256 — SHA-256 applied twice — Genesis402 / UnyKorn Operator Network$0.001 Base82 ms2 payers93% up
  51. 96twin.unykorn.org/hash-keccak256Ethereum keccak256 — the original Keccak, not NIST SHA3 — Genesis402 / UnyKorn Operator Network$0.001 Base76 ms2 payers93% up
  52. 96twin.unykorn.org/hash-hash160Bitcoin HASH160 — RIPEMD-160 of SHA-256 — Genesis402 / UnyKorn Operator Network$0.001 Base77 ms2 payers93% up
  53. 96twin.unykorn.org/hash-blake2s256BLAKE2s-256 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base78 ms2 payers93% up
  54. 96twin.unykorn.org/hash-blake2b512BLAKE2b-512 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network$0.001 Base88 ms2 payers93% up
  55. 96twin.unykorn.org/evm-block-tx-countHow many transactions are in a block — Genesis402 / UnyKorn Operator Network$0.001 Base83 ms2 payers93% up
  56. 96twin.unykorn.org/eth-message-hashEIP-191 digest of a message (what personal_sign actually signs) — Genesis402 / UnyKorn Operator Network$0.001 Base77 ms2 payers93% up
  57. 96twin.unykorn.org/eth-checksum-addressEIP-55 checksum an Ethereum address, and check one — Genesis402 / UnyKorn Operator Network$0.001 Base76 ms2 payers93% up
  58. 96twin.unykorn.org/encode-base58Base58 encoding (Bitcoin alphabet) — Genesis402 / UnyKorn Operator Network$0.001 Base78 ms2 payers93% up
  59. 96twin.unykorn.org/decode-hexDecode hex to text and other encodings — Genesis402 / UnyKorn Operator Network$0.001 Base82 ms2 payers93% up
  60. 96twin.unykorn.org/decode-base64Decode base64 or base64url to bytes and text — Genesis402 / UnyKorn Operator Network$0.001 Base78 ms2 payers93% up
  61. 96twin.unykorn.org/compare-digestCompare two hashes or secrets in constant time — Genesis402 / UnyKorn Operator Network$0.001 Base78 ms2 payers93% up
  62. 96twin.unykorn.org/chain-infoReference data for a supported EVM chain — Genesis402 / UnyKorn Operator Network$0.001 Base90 ms2 payers93% up
  63. 96twin.unykorn.org/evm-node-infoWhich client software is behind an RPC endpoint — Genesis402 / UnyKorn Operator Network$0.001 Base81 ms2 payers93% up
  64. 96twin.unykorn.org/evm-chain-idEIP-155 chain id, confirmed from the node itself — Genesis402 / UnyKorn Operator Network$0.001 Base84 ms2 payers93% up
  65. 96twin.unykorn.org/eth-unitsConvert between wei, gwei, ether and token units — Genesis402 / UnyKorn Operator Network$0.001 Base88 ms2 payers93% up
  66. 96twin.unykorn.org/eth-namehashENS namehash and labelhash for a name — Genesis402 / UnyKorn Operator Network$0.001 Base77 ms2 payers93% up
  67. 96twin.unykorn.org/erc20-symbolTicker symbol of a token contract — Genesis402 / UnyKorn Operator Network$0.001 Base89 ms2 payers93% up
  68. 96twin.unykorn.org/encode-urlPercent-encode and decode a string for URLs — Genesis402 / UnyKorn Operator Network$0.001 Base85 ms2 payers93% up
  69. 96twin.unykorn.org/encode-base64Base64 and base64url encoding of text or bytes — Genesis402 / UnyKorn Operator Network$0.001 Base82 ms2 payers93% up
  70. 96twin.unykorn.org/abi-function-selectorFunction selector from a Solidity signature — Genesis402 / UnyKorn Operator Network$0.001 Base90 ms2 payers93% up
  71. 96twin.unykorn.org/abi-event-topicEvent topic0 from a Solidity event signature — Genesis402 / UnyKorn Operator Network$0.001 Base82 ms2 payers93% up
  72. 96twin.unykorn.org/weighted-averageWeighted average, with the plain average for comparison — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  73. 96twin.unykorn.org/storage-slot-mappingCompute the storage slot of a Solidity mapping entry — Genesis402 / UnyKorn Operator Network$0.002 Base85 ms2 payers93% up
  74. 96twin.unykorn.org/stellar-ledgerLatest Stellar ledger — height, close time, fees and throughput — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  75. 96twin.unykorn.org/stellar-fee-statsStellar fee statistics and surge-pricing state — Genesis402 / UnyKorn Operator Network$0.002 Base87 ms2 payers93% up
  76. 96twin.unykorn.org/solana-rent-exemptLamports needed to make a Solana account rent-exempt — Genesis402 / UnyKorn Operator Network$0.002 Base83 ms2 payers93% up
  77. 96twin.unykorn.org/solana-inflationCurrent Solana inflation rate split — Genesis402 / UnyKorn Operator Network$0.002 Base84 ms2 payers93% up
  78. 96twin.unykorn.org/solana-blockhashLatest Solana blockhash and how long it stays valid — Genesis402 / UnyKorn Operator Network$0.002 Base89 ms2 payers93% up
  79. 96twin.unykorn.org/slippage-calcSlippage between an expected and an actual fill — Genesis402 / UnyKorn Operator Network$0.002 Base73 ms2 payers93% up
  80. 96twin.unykorn.org/json-flattenFlatten nested JSON to leaf paths — Genesis402 / UnyKorn Operator Network$0.002 Base79 ms2 payers93% up
  81. 96twin.unykorn.org/evm-priority-feeSuggested EIP-1559 priority fee (miner tip) — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  82. 96twin.unykorn.org/evm-nonceTransaction count (nonce) for one address — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  83. 96twin.unykorn.org/erc20-domain-separatorEIP-712 domain separator of a token — Genesis402 / UnyKorn Operator Network$0.002 Base89 ms2 payers93% up
  84. 96twin.unykorn.org/decode-jwtDecode a JWT's header and claims — WITHOUT verifying it — Genesis402 / UnyKorn Operator Network$0.002 Base84 ms2 payers93% up
  85. 96twin.unykorn.org/decode-bech32Decode and checksum-verify a bech32 or bech32m string — Genesis402 / UnyKorn Operator Network$0.002 Base76 ms2 payers93% up
  86. 96twin.unykorn.org/contract-pausedIs a Pausable contract currently paused — Genesis402 / UnyKorn Operator Network$0.002 Base84 ms2 payers93% up
  87. 96twin.unykorn.org/compound-growthFuture value with compounding and optional regular contributions — Genesis402 / UnyKorn Operator Network$0.002 Base85 ms2 payers93% up
  88. 96twin.unykorn.org/evm-storageRead one raw storage slot from any contract — Genesis402 / UnyKorn Operator Network$0.002 Base84 ms2 payers93% up
  89. 96twin.unykorn.org/evm-native-balanceNative coin balance for one address, on any of ten EVM chains — Genesis402 / UnyKorn Operator Network$0.002 Base82 ms2 payers93% up
  90. 96twin.unykorn.org/evm-gas-priceCurrent gas price on any of ten EVM chains — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  91. 96twin.unykorn.org/evm-codeIs this address a contract or an externally-owned account — Genesis402 / UnyKorn Operator Network$0.002 Base81 ms2 payers93% up
  92. 96twin.unykorn.org/calldata-splitSplit calldata into its selector and 32-byte words — Genesis402 / UnyKorn Operator Network$0.002 Base90 ms2 payers93% up
  93. 96twin.unykorn.org/btc-feesRecommended Bitcoin fee rates right now — Genesis402 / UnyKorn Operator Network$0.002 Base79 ms2 payers93% up
  94. 96twin.unykorn.org/btc-bits-to-targetExpand Bitcoin nBits into a target and difficulty — Genesis402 / UnyKorn Operator Network$0.002 Base78 ms2 payers93% up
  95. 96twin.unykorn.org/base58check-verifyVerify a base58check string and split out its version byte — Genesis402 / UnyKorn Operator Network$0.002 Base80 ms2 payers93% up
  96. 96twin.unykorn.org/apr-apyConvert between APR and APY at any compounding frequency — Genesis402 / UnyKorn Operator Network$0.002 Base79 ms2 payers93% up
  97. 96twin.unykorn.org/eth-rlp-encodeRLP-encode a value or nested list — Genesis402 / UnyKorn Operator Network$0.002 Base79 ms2 payers93% up
  98. 96twin.unykorn.org/eth-contract-addressPredict a contract address before it is deployed — Genesis402 / UnyKorn Operator Network$0.002 Base85 ms2 payers93% up
  99. 96twin.unykorn.org/eth-address-from-pubkeyDerive an Ethereum address from a public key — Genesis402 / UnyKorn Operator Network$0.002 Base83 ms2 payers93% up
  100. 96twin.unykorn.org/erc20-nonceEIP-2612 permit nonce for an owner — Genesis402 / UnyKorn Operator Network$0.002 Base82 ms2 payers93% up