x402watch

24,414 paid endpoints are listed. 23,516 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 2026-10-03 11:51 UTC · 24,414 probed

23,516 answering 402324 down442 rejecting132 no paywall2,418 price drift
  1. 100agenttools-hub.vercel.app/api/v1/dev/email-validatorValidate an email address in two layers: strict RFC-style syntax, then a live DNS MX lookup on the domain to confirm the recipient actually runs mail servers. Catches the typos and fake domains that pure regex misses. Use this when an agent needs to syntax + live MX check — can this address receive mail?.$0.001 Base288 ms1 payers100% up
  2. 100agenttools-hub.vercel.app/api/v1/finance/margin-calculatorCalculate gross profit, profit margin (profit as % of price) and markup (profit as % of cost) from a unit cost and selling price — the two numbers people constantly mix up. Use this when an agent needs to profit margin vs markup, both computed.$0.001 Base89 ms1 payers100% up
  3. 100agenttools-hub.vercel.app/api/v1/finance/roi-calculatorCalculate return on investment: profit (or loss) and the percentage return relative to the initial amount invested. Use this when an agent needs to return on investment as a percentage.$0.001 Base86 ms1 payers100% up
  4. 100agenttools-hub.vercel.app/api/v1/crypto/wei-eth-converterConvert between wei, kwei, mwei, gwei, microether, milliether and ether with exact BigInt arithmetic. Decimal strings of any magnitude convert without floating-point error. Use this when an agent needs to exact Ethereum unit conversion — no float errors.$0.001 Base96 ms1 payers100% up
  5. 100agenttools-hub.vercel.app/api/v1/dev/mime-typesLook up MIME content types by type substring or file extension, or list a category — covering text, application, image, audio, video, font and multipart types used in web APIs. Use this when an agent needs to content-Type lookup by type or file extension.$0.001 Base87 ms1 payers100% up
  6. 100agenttools-hub.vercel.app/api/v1/dev/http-status-codesReference database of HTTP response status codes with phrase, category and explanation. Look up a specific code or list a whole category (1xx–5xx). Use this when an agent needs to look up any HTTP status code's meaning.$0.001 Base143 ms1 payers100% up
  7. 100agenttools-hub.vercel.app/api/v1/dev/json-formatterValidate JSON with precise error messages, pretty-print it with any indent, and inspect its top-level type and element counts. Use this when an agent needs to validate, pretty-print and inspect JSON.$0.001 Base85 ms1 payers100% up
  8. 100agenttools-hub.vercel.app/api/v1/dev/url-encoderPercent-encode text for safe inclusion in URLs and query strings, or decode percent-encoded text back. Uses the standard encodeURIComponent rules. Use this when an agent needs to percent-encoding for query strings and URLs.$0.001 Base95 ms1 payers100% up
  9. 100agenttools-hub.vercel.app/api/v1/dev/jwt-decoderDecode a JSON Web Token's header and payload to readable JSON. Pure decoding: signatures are NOT verified and no secret is needed. Claims like exp and iat are rendered as dates. Use this when an agent needs to decode header and payload — no verification.$0.001 Base87 ms1 payers100% up
  10. 100agenttools-hub.vercel.app/api/v1/dev/case-converterConvert text between nine letter cases: UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE. camelCase boundaries are split automatically. Use this when an agent needs to camelCase, snake_case, kebab-case and more.$0.001 Base88 ms1 payers100% up
  11. 100agenttools-hub.vercel.app/api/v1/converters/roman-numeral-converterConvert numbers to Roman numerals (1–3999) and Roman numerals back to numbers, with strict validation that rejects non-standard forms like IIIM or VX. Use this when an agent needs to numbers ↔ Roman numerals, with validation.$0.001 Base86 ms1 payers100% up
  12. 100agenttools-hub.vercel.app/api/v1/dev/number-base-converterConvert integers between any bases from 2 to 36 — binary, octal, decimal, hexadecimal and beyond — with BigInt precision (no limit on magnitude). Use this when an agent needs to binary, octal, decimal, hex — any base 2–36.$0.001 Base91 ms1 payers100% up
  13. 100agenttools-hub.vercel.app/api/v1/converters/unix-timestamp-converterConvert Unix epoch timestamps to ISO/UTC dates and back. Millisecond timestamps are detected automatically; invalid dates are rejected with clear errors. Use this when an agent needs to epoch seconds ↔ human dates, both directions.$0.001 Base242 ms1 payers100% up
  14. 100agenttools-hub.vercel.app/api/v1/converters/volume-converterConvert cooking and liquid volume units: milliliters, liters, cubic meters, US gallons, quarts, pints, cups, fluid ounces, tablespoons and teaspoons. Use this when an agent needs to liters, gallons, cups, milliliters.$0.001 Base90 ms1 payers100% up
  15. 100agenttools-hub.vercel.app/api/v1/converters/area-converterConvert area units: square millimeters, centimeters, meters and kilometers, hectares, acres, square feet and square miles. Use this when an agent needs to square meters, feet, acres, hectares.$0.001 Base209 ms1 payers100% up
  16. 100agenttools-hub.vercel.app/api/v1/converters/speed-converterConvert speed units: kilometers per hour, miles per hour, meters per second, knots and feet per second with exact definitions. Use this when an agent needs to km/h, mph, m/s, knots and ft/s.$0.001 Base83 ms1 payers100% up
  17. 100agenttools-hub.vercel.app/api/v1/converters/data-size-converterConvert digital storage units: bits, bytes, KB, MB, GB, TB (decimal, ×1000) and KiB, MiB, GiB, TiB (binary, ×1024) — both systems side by side. Use this when an agent needs to decimal (KB/MB/GB) and binary (KiB/MiB/GiB) units.$0.001 Base88 ms1 payers100% up
  18. 100agenttools-hub.vercel.app/api/v1/converters/temperature-converterConvert between Celsius, Fahrenheit and Kelvin with exact formulas, reference points (freezing and boiling water) and step-by-step working. Use this when an agent needs to celsius, Fahrenheit and Kelvin, both ways.$0.001 Base83 ms1 payers100% up
  19. 100agenttools-hub.vercel.app/api/v1/converters/weight-converterConvert between weight and mass units: metric tons, kilograms, grams, milligrams, pounds, ounces and stones with exact international definitions. Use this when an agent needs to kilograms, pounds, ounces and more.$0.001 Base84 ms1 payers100% up
  20. 100agenttools-hub.vercel.app/api/v1/converters/length-converterConvert between metric and imperial length units: kilometers, meters, centimeters, millimeters, micrometers, nanometers, miles, yards, feet, inches and nautical miles. Use this when an agent needs to metric and imperial distance units, instantly.$0.001 Base238 ms1 payers100% up
  21. 100agenttools-hub.vercel.app/api/v1/calculators/reading-time-calculatorEstimate reading time from a word count at any reading speed. Defaults to 200 words per minute — the typical silent-reading speed for adults. Use this when an agent needs to how long a text takes to read, by word count.$0.001 Base88 ms1 payers100% up
  22. 100agenttools-hub.vercel.app/api/v1/calculators/fuel-cost-calculatorCalculate the liters of fuel a trip needs and its total cost from distance, consumption (L/100 km) and price per liter — with optional cost splitting between passengers. Use this when an agent needs to trip fuel and cost, splitable between people.$0.001 Base98 ms1 payers100% up
  23. 100agenttools-hub.vercel.app/api/v1/calculators/compound-interest-calculatorProject the future value of a deposit with compound interest: choose annual, semi-annual, quarterly, monthly, weekly or daily compounding and see total interest earned. Use this when an agent needs to future value with any compounding frequency.$0.002 Base104 ms1 payers100% up
  24. 100agenttools-hub.vercel.app/api/v1/calculators/loan-payment-calculatorCalculate the fixed monthly payment for a loan from its principal, annual interest rate and term in years, plus total repaid and total interest (annuity formula). Use this when an agent needs to monthly payment, total cost and interest for any loan.$0.002 Base81 ms1 payers100% up
  25. 100agenttools-hub.vercel.app/api/v1/calculators/age-calculatorCalculate a person's exact age in calendar years, months and days from their date of birth, plus total days lived. Reference date defaults to today (UTC). Use this when an agent needs to exact age in years, months and days.$0.001 Base80 ms1 payers100% up
  26. 100agenttools-hub.vercel.app/api/v1/calculators/date-difference-calculatorCount the total days between two dates, plus the breakdown in weeks and days and in calendar years, months and days. Use this when an agent needs to days, weeks and calendar time between two dates.$0.001 Base78 ms1 payers100% up
  27. 100agenttools-hub.vercel.app/api/v1/calculators/bmi-calculatorCalculate Body Mass Index from weight (kg) and height (cm), with the WHO weight category and the healthy BMI weight range for your height. Use this when an agent needs to body Mass Index with WHO category.$0.001 Base94 ms1 payers100% up
  28. 100agenttools-hub.vercel.app/api/v1/calculators/vat-calculatorAdd VAT to a net amount or remove VAT from a gross amount. Standard VAT rates for 36 countries are built in, or override with any custom rate. Use this when an agent needs to add or remove VAT at standard rates for 36 countries.$0.001 Base93 ms1 payers100% up
  29. 100agenttools-hub.vercel.app/api/v1/calculators/tip-calculatorCalculate the tip for any bill, the grand total, and how much each person pays when splitting. Defaults to a 15% tip. Use this when an agent needs to tip amount, total and per-person split.$0.001 Base79 ms1 payers100% up
  30. 100agenttools-hub.vercel.app/api/v1/calculators/discount-calculatorCalculate the final sale price and the amount saved for any price and percent-off discount, with the working shown. Use this when an agent needs to sale price and savings from a percent off.$0.001 Base99 ms1 payers100% up
  31. 100api.socialfetch.dev/v1/reddit/posts/commentsList comments on a Reddit post by URL.$0.014 Base181 ms1 payers100% up
  32. 100api.socialfetch.dev/v1/reddit/postsGet a Reddit post by URL.$0.014 Base287 ms1 payers100% up
  33. 100mpp.tracefast.xyz/api/v1/chains/1/contracts/:addressTraceFast live Ethereum data: one deployed contract — the hash and size of its current code, what the code exposes (ERC-20 view functions, ERC-165, an EIP-1167 minimal proxy and its target), the proxy pattern detected in it, and its lifecycle: the deploying account, the origin account, the creating transaction, code changes and self-destruction. Path address: The contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/contract.md$0.01 Base19 ms1 payers100% up
  34. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/attributes/:attribute_id/proofTraceFast knowledge graph: the evidence behind one proven attribute of an address — the facts that were checked with their expected and observed values, the conditions that had to be false, the sources the evidence was read from, and the block the evaluation was pinned to. Path address: The address, `0x`-prefixed, 40 hex characters, any case; attribute_id: The attribute id, `family:name`, as listed by the attributes method. Docs: https://docs.tracefast.xyz/api/address-attribute-proof.md$0.05 Base118 ms1 payers100% up
  35. 100soren.com/v1/ai/summarizeA faithful, information-dense summary of any text up to 24,000 characters, for agents holding a wallet but no LLM key. POST the text as the raw body; length=short (2-4 sentences, default) or medium. Temperature-zero, no invented facts, no preamble — and charged ONLY if the summary is produced. A failed inference costs nothing.$0.03 Base183 ms1 payers100% up
  36. 100soren.com/v1/ai/extractNamed fields pulled out of unstructured text as GUARANTEED-VALID JSON. POST the text as the raw body with fields=comma,separated,names (max 12). Every requested field is present in the answer — null when the text does not contain it — and the JSON is validated server-side BEFORE you are charged: no parse errors, no missing keys, ever. A failed inference costs nothing.$0.03 Base187 ms1 payers100% up
  37. 100stabletravel.dev/api/flightaware/airports/KJFK/weather/forecastGet weather forecast (TAF) for a specific airport$0.004 Base217 ms1 payers100% up
  38. 100stabletravel.dev/api/flightaware/airports/KDFW/weather/forecastGet weather forecast (TAF) for a specific airport$0.004 Base230 ms1 payers100% up
  39. 100stabletravel.dev/api/flightaware/airports/CTS/weather/forecastGet weather forecast (TAF) for a specific airport$0.004 Base290 ms1 payers100% up
  40. 100agenttools-hub.vercel.app/api/v1/dev/archive-lookupQuery the Internet Archive's Wayback index for any URL: when it was first archived, the most recent snapshot, how many years it spans, and recent capture dates. Useful for fact-checking page history, finding deleted content and due-diligence. Use this when an agent needs to how the Internet Archive remembers a URL.$0.002 Base65 ms1 payers100% up
  41. 100vaaya.ai/api/run/modal/sandbox-statusModal — Check status of a sandbox.$0.01 Base290 ms1 payers100% up
  42. 100saylorinnovations.com/api/package/reportInspect the latest npm package release: version, license, dependency counts, engine requirements, deprecation notice and source links. Does not download or execute package code.$0.003 Solana288 ms1 payers100% up
  43. 100saylorinnovations.com/api/evm/polygon/call/:addressRead-Only Contract Call (eth_call) (polygon). Polygon read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data.$0.003 Solana261 ms1 payers100% up
  44. 100saylorinnovations.com/api/evm/optimism/call/:addressRead-Only Contract Call (eth_call) (optimism). Optimism read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data.$0.003 Solana280 ms1 payers100% up
  45. 100saylorinnovations.com/api/evm/arbitrum/call/:addressRead-Only Contract Call (eth_call) (arbitrum). Arbitrum read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data.$0.003 Solana230 ms1 payers100% up
  46. 100saylorinnovations.com/api/evm/ethereum/call/:addressRead-Only Contract Call (eth_call) (ethereum). Ethereum read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data.$0.003 Solana199 ms1 payers100% up
  47. 100saylorinnovations.com/api/evm/base/call/:addressRead-Only Contract Call (eth_call) (base). Base read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data.$0.003 Solana192 ms1 payers100% up
  48. 100api.interzoid.com/getipprofileGet comprehensive profile information for an IP address including geolocation, ISP, organization, connection type, CIDR block, and reputation assessment.$0.25 Base127 ms1 payers100% up
  49. 100api.interzoid.com/getxuserprofileRetrieve a comprehensive profile snapshot for an X (Twitter) handle including display name, bio description, follower and following counts, total post count, website URL, location, and account creation date.$0.05 Base260 ms1 payers100% up
  50. 100mpp.tracefast.xyz/api/v1/chains/1/transactions/:hash/storage-writesTraceFast live Ethereum data: every contract storage slot a transaction wrote, in execution order — which contract's storage, which frame wrote it (with the address whose code ran, which on a `delegatecall` is not the storage owner), the slot, the value written, and the value the slot held before where that can be established. Path: hash. Query: limit, cursor (see docs). Docs: https://docs.tracefast.xyz/api/transaction-storage-writes.md$0.20 Base29 ms1 payers100% up
  51. 100mpp.tracefast.xyz/api/v1/chains/1/traces/:hash/framesTraceFast live Ethereum data: the whole call tree of a transaction, frame by frame in the order it ran, paged — no 1 000-frame cap. Path hash: Transaction hash, `0x`-prefixed, 64 hex characters, any case. Query limit: 1..=100, default 50; cursor: `nextCursor` of the previous page. Docs: https://docs.tracefast.xyz/api/trace-frames.md$0.20 Base107 ms1 payers100% up
  52. 100mpp.tracefast.xyz/api/v1/chains/1/traces/:hashTraceFast live Ethereum data: every call frame a transaction executed, the order it ran — the caller and target of each, the kind of call, the value and gas it moved, its own outcome, and why it reverted where it did. Path hash: Transaction hash, `0x`-prefixed, 64 hex characters, any case. Query: includeCalldata, limit (see docs). Docs: https://docs.tracefast.xyz/api/trace.md$0.20 Base223 ms1 payers100% up
  53. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/transactionsTraceFast live Ethereum data: the transactions an address sent or received, newest first — each with sender, recipient, value, fee, the called function where its selector is known, the receipt's outcome, and which side of it this address is on (`sender`, `receiver`, or `self` when it is both). Path: address. Query: limit, cursor, direction, status, fromBlock, toBlock (see docs). Docs: https://docs.tracefast.xyz/api/entity-transactions.md$0.20 Base161 ms1 payers100% up
  54. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/token-transfersTraceFast live Ethereum data: the token transfers an address sent or received, newest first — the token as its contract declares itself, the raw amount (unscaled), the parties, the transaction that emitted it and who sent that transaction, which on a router or a batch disburser is another party entirely. Path: address. Query: limit, cursor, direction, token, fromBlock, toBlock (see docs). Docs: https://docs.tracefast.xyz/api/entity-token-transfers.md$0.20 Base58 ms1 payers100% up
  55. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/internal-transfersTraceFast live Ethereum data: the value-carrying call frames an address sent or received inside transactions, newest first — each with its position in the call tree, its depth, the kind of call, the value it moved and its own outcome. Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query: limit, cursor, direction, fromBlock, toBlock (see docs). Docs: https://docs.tracefast.xyz/api/entity-internal-transfers.md$0.20 Base94 ms1 payers100% up
  56. 100mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/eventsTraceFast live Ethereum data: the event logs a contract emitted, newest first, each with its topics and data and, where the signature is known, the decoded event and its arguments. Path address: The contract address, `0x`-prefixed, 40 hex characters, any case. Query: limit, cursor, topic0, fromBlock, toBlock (see docs). Docs: https://docs.tracefast.xyz/api/contract-events.md$0.20 Base185 ms1 payers100% up
  57. 100mpp.tracefast.xyz/api/v1/chains/1/risk/blacklists/:addressTraceFast live Ethereum data: every issuer contract that ever placed the address on its on-chain blacklist — one row each, currently listed or not, with the issuer's weight (`authorityTier`), the first and latest events and the transition counts — plus, as a separate fact, the issuers that enforced against it (funds destroyed or frozen). Path address: The address, `0x`-prefixed, any case. Docs: https://docs.tracefast.xyz/api/risk-blacklist-status.md$0.20 Base59 ms1 payers100% up
  58. 100mpp.tracefast.xyz/api/v1/chains/1/risk/blacklists/:address/eventsTraceFast live Ethereum data: every blacklist event any issuer contract recorded about the address — listed (`add`), unlisted (`remove`) or enforced against (`enforce`: funds destroyed or frozen) — newest first, with the issuer and its weight. Path address: The address, `0x`-prefixed, any case. Query: limit, cursor, issuerContract, action (see docs). Docs: https://docs.tracefast.xyz/api/risk-blacklist-events.md$0.20 Base74 ms1 payers100% up
  59. 100mpp.tracefast.xyz/api/v1/chains/1/tokens/:token/transfersTraceFast live Ethereum data: the transfer events of one token contract, newest first — the parties, the raw amount (unscaled) or token id, the event kind, the transaction that emitted it and who sent that transaction, which on a router or a batch disburser is another party entirely. Path: token. Query: limit, cursor, from, to, eventType, fromBlock, toBlock (see docs). Docs: https://docs.tracefast.xyz/api/token-transfers.md$0.10 Base32 ms1 payers100% up
  60. 100mpp.tracefast.xyz/api/v1/chains/1/consensus/proposersTraceFast live Ethereum data: which validators proposed the most blocks over a window, or — grouped by withdrawal address — which payout addresses their proposals sum to. Query period: `7d` (default), `30d`, `90d`, `1y` or `all`; groupBy: `validator` (default) or `address`; limit: Rows to return, 1..=100, default 20. Docs: https://docs.tracefast.xyz/api/consensus-proposers.md$0.10 Base136 ms1 payers100% up
  61. 100mpp.tracefast.xyz/api/v1/chains/1/consensus/validators/:index/withdrawalsTraceFast live Ethereum data: the withdrawals paid out for one validator — block, global withdrawal index, the address paid and the amount — newest first, inside a block window of at most 216 000 blocks (about 30 days). Path index: The validator's index in the consensus registry. Query limit: 1..=100, default 25; cursor: `nextCursor` of the previous page; fromBlock: Inclusive lower block bound; toBlock: Inclusive upper block bound. Docs: https://docs.tracefast.xyz/api/validator-withdrawals.md$0.05 Base81 ms1 payers100% up
  62. 100mpp.tracefast.xyz/api/v1/chains/1/resolveTraceFast live Ethereum data: what a reference means. An address (`0x` + 40 hex) is described — the name TraceFast shows for it, how it presents it, what kind of address it is, its token identity. Query q: What to resolve: an address (`0x` + 40 hex, any case), or a name, ENS…; limit: 1..=20, default 10. Docs: https://docs.tracefast.xyz/api/entity-resolve.md$0.05 Base28 ms1 payers100% up
  63. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/relations/at-blockTraceFast knowledge graph: the relations an address was the subject of at the end of one block — which implementation a proxy pointed at, which beacon it read, who administered it, where an account had delegated — each with the window it held for. Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query block: The block to answer about. Docs: https://docs.tracefast.xyz/api/address-relations-at-block.md$0.05 Base69 ms1 payers100% up
  64. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/relationsTraceFast knowledge graph: the relations an address holds now — which implementation a proxy points at, which beacon it reads, who administers it, where an account has delegated, which lending market lists a token — as the subject (`direction=subject`: what it points at, default) or as the object (`direction=object`: who points at it). Path: address. Query: direction, attributeId, limit, cursor (see docs). Docs: https://docs.tracefast.xyz/api/address-relations.md$0.05 Base125 ms1 payers100% up
  65. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/relations/:attribute_id/:object/proofTraceFast knowledge graph: the evidence behind one proven relation between two addresses — the facts checked with their expected and observed values, the conditions that had to be false, the sources read, and the block the evaluation was pinned to. Path: address, attribute_id, object. Docs: https://docs.tracefast.xyz/api/address-relation-proof.md$0.05 Base49 ms1 payers100% up
  66. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/relations/historyTraceFast knowledge graph: every relation interval an address has held, oldest first — as the subject (`direction=subject`: what it pointed at, default) or as the object (`direction=object`: who pointed at it). Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query direction: `subject` (default) or `object`; limit: 1..=500, default 100. Docs: https://docs.tracefast.xyz/api/address-relation-history.md$0.05 Base24 ms1 payers100% up
  67. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/attributes/at-blockTraceFast knowledge graph: the attributes an address held at the end of one block, each with the window it held for. Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query block: The block to answer about. Docs: https://docs.tracefast.xyz/api/address-attributes-at-block.md$0.05 Base67 ms1 payers100% up
  68. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/attributes/historyTraceFast knowledge graph: every attribute interval an address has held, oldest first — when it became a contract, when its code was removed, when it first held state. Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query limit: 1..=500, default 100. Docs: https://docs.tracefast.xyz/api/address-attribute-history.md$0.05 Base46 ms1 payers100% up
  69. 100mpp.tracefast.xyz/api/v1/chains/1/consensus/queuesTraceFast live Ethereum data: the validator activation and exit queues now, plus one closing point per UTC day for the most recent `limit` days (up to 90), newest first. Query limit: Most recent daily points to return, 1..=90, default 30. Docs: https://docs.tracefast.xyz/api/consensus-queues.md$0.05 Base41 ms1 payers100% up
  70. 100mpp.tracefast.xyz/api/v1/chains/1/blocks/:number/addressesTraceFast live Ethereum data: every account whose own state — native balance, nonce or code — changed in one block, with what changed and the balance before and after, in address order. Path number: Block height. Query limit: 1..=100, default 25; cursor: `nextCursor` of the previous page. Docs: https://docs.tracefast.xyz/api/block-addresses.md$0.05 Base29 ms1 payers100% up
  71. 100mpp.tracefast.xyz/api/v1/chains/1/transactions/:hash/failuresTraceFast live Ethereum data: the failed call frames of a reverted transaction — for each, its position in the call tree, caller and target, the kind of failure (revert, panic, custom error, out of gas, …), the revert payload with its selector, and the error name when the selector is known. Path hash: Transaction hash, `0x`-prefixed, 64 hex characters, any case. Docs: https://docs.tracefast.xyz/api/transaction-failures.md$0.02 Base26 ms1 payers100% up
  72. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/daily-activityTraceFast live Ethereum data: for each day in a window, how many blocks changed the address's own account state and which kind of change it was (balance, nonce, code, creation). Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query period: `30d`, `90d` (default) or `365d`. Docs: https://docs.tracefast.xyz/api/address-daily-activity.md$0.02 Base24 ms1 payers100% up
  73. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/balance-historyTraceFast live Ethereum data: the address's native balance at the end of each day it changed, oldest first, with the net change and the number of balance-changing events per day, the USD value at each closed day's last hour, and totals over the window. Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query limit: Most recent days with a balance change to return, 1..=365, default 90. Docs: https://docs.tracefast.xyz/api/address-balance-history.md$0.02 Base42 ms1 payers100% up
  74. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:address/activityTraceFast live Ethereum data: three different questions about when an address was active, each answered separately — when it was first mentioned anywhere on chain; when its own account state last changed and how many times it changed; and the newest block at which it took part in anything (a top-level transaction, a token transfer, an emitted log, a value-bearing call), with the sources that answer was… Path: address. Docs: https://docs.tracefast.xyz/api/address-activity.md$0.02 Base19 ms1 payers100% up
  75. 100mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/proxyTraceFast live Ethereum data: the implementations a proxy contract has been observed delegating to — from its EIP-1167 bytecode, its EIP-1967 implementation or beacon slot, or its OpenZeppelin v1 slot — newest first, each with the blocks it was seen at and whether it has since been replaced. Path address: The proxy contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/contract-proxy.md$0.02 Base49 ms1 payers100% up
  76. 100mpp.tracefast.xyz/api/v1/chains/1/blocks/:number/withdrawalsTraceFast live Ethereum data: the validator withdrawals paid out in one block — index, validator, recipient and amount — in withdrawal-index order. A block holds at most 16. Optionally narrowed to one validator or one recipient. Path number: Block height. Query: limit, cursor, validatorIndex, address (see docs). Docs: https://docs.tracefast.xyz/api/block-withdrawals.md$0.02 Base31 ms1 payers100% up
  77. 100mpp.tracefast.xyz/api/v1/chains/1/blocks/:number/transactionsTraceFast live Ethereum data: the transactions of one block in their order within the block, each with sender, recipient, value, gas, fee fields and the receipt's outcome. Paged by an opaque cursor: pass `nextCursor` back as `cursor` until it is absent. Path number: Block height. Query limit: 1..=100, default 25; cursor: `nextCursor` of the previous page. Docs: https://docs.tracefast.xyz/api/block-transactions.md$0.02 Base26 ms1 payers100% up
  78. 100mpp.tracefast.xyz/api/v1/chains/1/blocks/:number/authorizationsTraceFast live Ethereum data: every EIP-7702 authorization-list entry carried by the transactions of one block — the delegation target, the chain id and nonce it was signed for, and the signature — in transaction order and then list order. Path number: Block height. Query limit: 1..=100, default 25; cursor: `nextCursor` of the previous page. Docs: https://docs.tracefast.xyz/api/block-authorizations.md$0.02 Base24 ms1 payers100% up
  79. 100mpp.tracefast.xyz/api/v1/chains/1/transactions/:hash/eventsTraceFast live Ethereum data: the event logs a transaction emitted, in emission order, each with the emitting contract, topics and data, and — when the event signature is known — the decoded event name and arguments with a stated confidence. Path hash: Transaction hash, `0x`-prefixed, 64 hex characters, any case. Query limit: 1..=100, default 25; cursor: `nextCursor` of the previous page. Docs: https://docs.tracefast.xyz/api/transaction-events.md$0.01 Base27 ms1 payers100% up
  80. 100mpp.tracefast.xyz/api/v1/chains/1/transactions/:hashTraceFast live Ethereum data: one transaction by hash — sender, recipient, value, nonce, type, gas limit and gas used, the fee fields of its type and the price actually paid per gas, the receipt's outcome and log count, and its position (block and index). Path hash: Transaction hash, `0x`-prefixed, 64 hex characters, any case. Docs: https://docs.tracefast.xyz/api/transaction.md$0.01 Base20 ms1 payers100% up
  81. 100mpp.tracefast.xyz/api/v1/chains/1/tokens/statsTraceFast live Ethereum data: how many token contracts, transfer events and distinct holders the chain holds, in total and per standard (ERC-20, ERC-721, ERC-1155, ERC-777, ERC-4626). Recomputed daily. Docs: https://docs.tracefast.xyz/api/token-stats.md$0.01 Base29 ms1 payers100% up
  82. 100mpp.tracefast.xyz/api/v1/chains/1/tokens/:tokenTraceFast live Ethereum data: one token contract — its standard as observed from its events (`erc20`, `erc721`, `erc1155`), the symbol, name and decimals it declares (verbatim, not verified), its all-time transfer count and, where indexed, its all-time distinct holder count. Path token: The token contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/token.md$0.01 Base22 ms1 payers100% up
  83. 100mpp.tracefast.xyz/api/v1/chains/1/entities/:addressTraceFast live Ethereum data: one address as the chain sees it now — how it exists (an account whose state was touched, or an address only ever mentioned by other operations), whether it holds code, its native balance and nonce, when it was first mentioned and last active in any form, and its direct-transaction counters. Path address: The address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/address.md$0.01 Base20 ms1 payers100% up
  84. 100mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/selectorsTraceFast live Ethereum data: the 4-byte function selectors found in a contract's bytecode, each resolved to a known signature and name where one exists, with how many known signatures share the selector. `decodeStatus` says how confident each resolution is. Path address: The contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/contract-selectors.md$0.01 Base28 ms1 payers100% up
  85. 100mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/bytecodeTraceFast live Ethereum data: the current runtime bytecode of a contract as hex, with its code hash and a structural fingerprint that is equal across contracts sharing the same logic. Up to 24 576 bytes of code. An address with no indexed code answers 404. Path address: The contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/contract-bytecode.md$0.01 Base18 ms1 payers100% up
  86. 100mpp.tracefast.xyz/api/v1/chains/1/consensus/currentTraceFast live Ethereum data: the validator activation and exit queues as of the newest sampled epoch — how many validators wait on each side, how much capital they hold, the churn rates, the trailing 7-day and 30-day averages, recent exit and deposit flow, and the active set's total effective balance. Docs: https://docs.tracefast.xyz/api/consensus-current.md$0.01 Base24 ms1 payers100% up
  87. 100mpp.tracefast.xyz/api/v1/chains/1/blocks/:numberTraceFast live Ethereum data: one block by height — its header (hash, parent, roots, fee recipient, gas, base fee, blob gas) and the totals of what it contains: transactions by outcome, contract creations, blob transactions, logs, withdrawals, value moved, fees burnt and paid. Path number: Block height. Docs: https://docs.tracefast.xyz/api/block.md$0.01 Base25 ms1 payers100% up
  88. 100soren.com/v1/chain/supplyRead an ERC-20 total supply with symbol, decimals and a formatted amount, live from Base mainnet, for a fraction of a cent. No API key, no account — a wallet is the only requirement, and you are charged only if the read succeeds. Plain unsigned data; the attested version of chain reads is /v1/oracle/onchain. Answers are read at the moment of the call and stamped with the block they came from where applicable.$0.003 Base86 ms1 payers100% up
  89. 100modelprices.xyz/gemini-pricingGemini pricing table: what every Gemini model costs per token right now — Gemini 3 Pro, Gemini 3 Flash, Gemini 2.5 — from Google and every provider that resells or hosts them (Bedrock, Azure, Vertex, OpenRouter, Fireworks). Input, output, cache and batch USD per 1M tokens, sorted cheapest first, so you can compare Gemini inference cost across hosts and pick the cheapest place to run one. Normalized, cross-checked, refreshed hourly.$0.01 Base172 ms1 payers100% up
  90. 100modelprices.xyz/deepseek-pricingDeepSeek pricing table: what every DeepSeek model costs per token right now — DeepSeek V4, DeepSeek R1, DeepSeek Coder — from DeepSeek and every provider that resells or hosts them (Bedrock, Azure, Vertex, OpenRouter, Fireworks). Input, output, cache and batch USD per 1M tokens, sorted cheapest first, so you can compare DeepSeek inference cost across hosts and pick the cheapest place to run one. Normalized, cross-checked, refreshed hourly.$0.01 Base148 ms1 payers100% up
  91. 100modelprices.xyz/command-pricingCommand pricing table: what every Command model costs per token right now — Command A, Command R+, Command R — from Cohere and every provider that resells or hosts them (Bedrock, Azure, Vertex, OpenRouter, Fireworks). Input, output, cache and batch USD per 1M tokens, sorted cheapest first, so you can compare Command inference cost across hosts and pick the cheapest place to run one. Normalized, cross-checked, refreshed hourly.$0.01 Base150 ms1 payers100% up
  92. 100modelprices.xyz/claude-pricingClaude pricing table: what every Claude model costs per token right now — Claude 5, Claude Opus, Claude Sonnet, Claude Haiku — from Anthropic and every provider that resells or hosts them (Bedrock, Azure, Vertex, OpenRouter, Fireworks). Input, output, cache and batch USD per 1M tokens, sorted cheapest first, so you can compare Claude inference cost across hosts and pick the cheapest place to run one. Normalized, cross-checked, refreshed hourly.$0.01 Base142 ms1 payers100% up
  93. 100modelprices.xyz/llm/limitsAI model capability, specs and limits table for 2,000+ LLMs — GPT-5, GPT-4o, Claude 5, Claude Sonnet, Gemini 3 Pro, Llama 4, DeepSeek V4 and more: context window size, max output tokens, vision/audio/function-calling/reasoning support. Compare model constraints side-by-side across every provider to pick the right model for long-context, multimodal, or tool-use workloads. Refreshed hourly.$0.02 Base154 ms1 payers100% up
  94. 100api.myceliasignal.com/oracle/sentiment/btc/usdMSXI Bitcoin market sentiment index — funding rate, 25-delta skew, put/call ratio, futures term structure and cross-exchange basis dispersion, each weighted and reported separately — Ed25519 signed attestation$0.05 Base155 ms1 payers100% up
  95. 100api.myceliasignal.com/oracle/volatility/eth/usdMSVI Ethereum volatility index — composite of realized vol, implied vol, term structure, funding stress and put/call ratio — Ed25519 signed attestation$0.05 Base111 ms1 payers100% up
  96. 100email.intel.rallylive.ca/watch/email/spf-authorizes/google-workspaceChange watch for spf authorizes google workspace: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.$0.02 Base243 ms1 payers100% up
  97. 100email.intel.rallylive.ca/bulk/email/hosted-by/salesforce-emailBulk is email hosted by salesforce email: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.$0.10 Base230 ms1 payers100% up
  98. 100email.intel.rallylive.ca/bulk/email/hosted-by/naver-worksBulk is email hosted by naver works: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.$0.10 Base246 ms1 payers100% up
  99. 100email.intel.rallylive.ca/bulk/email/hosted-by/tencent-exmailBulk is email hosted by tencent exmail: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.$0.10 Base280 ms1 payers100% up
  100. 100email.intel.rallylive.ca/bulk/email/hosted-by/alibaba-mailBulk is email hosted by alibaba mail: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.$0.10 Base233 ms1 payers100% up