x402watch

52,644 paid endpoints are listed. 27,290 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 2026-10-09 06:29 UTC · 52,644 probed

27,290 answering 40220,119 down4,243 rejecting992 no paywall1,829 price drift
  1. 87agents.driftflight.com/zcj/7z0p52jp6bz1/v1/images/generateGenerate an image from a text prompt$0.06 Base1141 ms1 payers100% up
  2. 87agents.driftflight.com/zcj/5dstjdgp0yfk/v1/images/generateGenerate an image from a text prompt$0.06 Base1235 ms1 payers100% up
  3. 87agents.driftflight.com/zcj/ekkm41xn1iya/v1/images/generateGenerate an image from a text prompt$0.06 Base1331 ms1 payers100% up
  4. 87agents.driftflight.com/zcj/6sr7za2ksshu/v1/images/generateGenerate an image from a text prompt$0.06 Base1307 ms1 payers100% up
  5. 87agents.driftflight.com/zcj/ep8s3u4iloek/v1/images/generateGenerate an image from a text prompt$0.06 Base1014 ms1 payers100% up
  6. 87agents.driftflight.com/zcj/bgi6mhennaaj/v1/images/generateGenerate an image from a text prompt$0.06 Base1117 ms1 payers100% up
  7. 87nickeljoke.vercel.app/api/jokePremium AI joke generation$0.005 Base Sepolia1203 ms1 payers100% up
  8. 87api.teardrop.dev/tools/mcpTeardrop resolve_ens: Resolve an ENS name (e.g. 'vitalik.eth') to an Ethereum address, or an address to its primary ENS name, with avatar text record when available. Mainnet only.$0.005 Base1242 ms0 payers100% up
  9. 87api.teardrop.dev/tools/mcpTeardrop read_contract: Call any view/pure function on a smart contract and return the decoded result, using a supplied ABI fragment. Supports historical reads via block_identifier and caller_address context for msg.sender-dependent views. Read-only: state-changing functions are rejected.$0.005 Base1247 ms0 payers100% up
  10. 87api.teardrop.dev/tools/mcpTeardrop http_fetch: Fetch a web page and return its main text content, cleaned of markup. Use to read articles, documentation, and other resources referenced by URL. Blocks private and cloud-metadata addresses and re-validates every redirect hop.$0.005 Base1215 ms0 payers100% up
  11. 87api.teardrop.dev/tools/mcpTeardrop get_yield_rates: Get DeFi yield pool rates from DeFiLlama across 1,000+ protocols and all chains: pools sorted by APY with TVL, base/reward APY, and 7d/30d mean APY context, filterable by protocol, chain, min TVL, min/max APY, and symbol. Returns up to 50 pools. For protocol-specific lending comparisons (Aave vs Compound) prefer get_lending_rates.$0.005 Base1233 ms0 payers100% up
  12. 87api.teardrop.dev/tools/mcpTeardrop get_wallet_portfolio: Get aggregated token holdings with USD values for a wallet address. Tracks 19 major assets on Ethereum and 12 on Base, including spot, lending, liquid-staking, restaking, and stablecoin assets. Sorted by USD value. Returns up to 20 holdings. Includes native ETH balance in the holdings list - calling get_eth_balance separately after this is redundant.$0.005 Base1294 ms0 payers100% up
  13. 87api.teardrop.dev/tools/mcpTeardrop get_wallet_approvals: Inspect a wallet's current ERC-20 token authorization exposure on one DeBank-supported chain. Returns discovered spenders, USD exposure, protocol attribution, and hacked or abandoned protocol flags. This is broader than the curated block-accurate get_token_approvals tool.$0.005 Base1194 ms0 payers100% up
  14. 87api.teardrop.dev/tools/mcpTeardrop get_transaction: Get details and receipt for one Ethereum or Base transaction by hash: bounded calldata, normalized event logs, transaction index, and receipt-derived effective gas price and fee when available. Use to verify a specific transaction's status and outcome.$0.005 Base1101 ms0 payers100% up
  15. 87api.teardrop.dev/tools/mcpTeardrop get_token_price_historical: Get historical crypto prices over a 1-365 day window: period statistics (start, end, % change, high, low), a downsampled daily series, high_30d, std_30d, and dca_baseline_90d. Use for period comparisons and trend analysis; prefer over web_search for time-comparative financial queries. Pass stats_only=true when the daily series is unnecessary.$0.005 Base1398 ms0 payers100% up
  16. 87api.teardrop.dev/tools/mcpTeardrop get_token_approvals: Block-accurate audit of ERC-20 allowances for a wallet across curated DeFi spenders (Uniswap, Aave, Compound, 1inch, 0x, OpenSea) on Ethereum or Base. Flags unlimited approvals by risk level (high=unknown spender, medium=trusted protocol, low=bounded). Use before swaps or after security incidents to detect active exploit vectors.$0.005 Base1092 ms0 payers100% up
  17. 87api.teardrop.dev/tools/mcpTeardrop get_lending_rates: Get current on-chain lending supply/borrow APYs for Aave v3 reserves and Compound v3 markets on Ethereum or Base, with per-asset snapshots and Compound utilization. Use for protocol-specific yield comparisons such as USDC on Aave vs Compound.$0.005 Base1152 ms0 payers100% up
  18. 87api.teardrop.dev/tools/mcpTeardrop get_gas_price: Get current EIP-1559 gas fees on Ethereum or Base: base fee, priority fee, next-block base fee estimate, and congestion (gas_used_ratio >0.5 busy, >0.9 very congested). Optional USD estimates cover a simple transfer and a swap-like transaction. Cached 10 seconds per chain.$0.005 Base1254 ms0 payers100% up
  19. 87api.teardrop.dev/tools/mcpTeardrop get_eth_balance: Get the exact on-chain native ETH balance of an address on Ethereum or Base, in wei and ether. get_wallet_portfolio already includes native ETH in its holdings - call this only for a standalone balance without a portfolio scan.$0.005 Base1100 ms0 payers100% up
  20. 87api.teardrop.dev/tools/mcpTeardrop get_erc20_balance: Get the exact on-chain ERC-20 balance of a wallet for one token contract, normalized by decimals and returned with the token's symbol. Use for a precise single-token check.$0.005 Base1240 ms0 payers100% up
  21. 87api.teardrop.dev/tools/mcpTeardrop get_dex_volume: Compare decentralized exchange activity via DeFiLlama: 24h/7d/30-day volume, period-over-period changes, and each protocol's share of reported global 24-hour DEX volume. Filter by protocol and rank by a 1-, 7-, or 30-day lookback window.$0.005 Base1041 ms0 payers100% up
  22. 86vibesprings.net/api/price/btc-usdReal-time BTC/USD price feed oracle. Retrieves live spot rate, 24h high/low, and volume directly from Coinbase Exchange.$0.002 Base1570 ms23 payers93% up
  23. 86vibesprings.net/api/price/base-gasBase network real-time gas price oracle. Returns block base fee, current gas price in GWEI, and network block details.$0.001 Base1219 ms20 payers93% up
  24. 86sandbox.node4all.com/v1/x402-testNode4All Fortune — deterministic fortune reading derived from the x402 payment authorization nonce. Flagship demo of the Node4All x402 v2 payment flow. Operator: Node4All (https://node4all.com). Currency: USDC on Base.$0.002 Base Sepolia1104 ms16 payers93% up
  25. 86api.agentstools.dev/searchFree-text web search for AI agents: ranked title/url/snippet results fused across multiple engines (Brave, Google, DuckDuckGo, Mojeek, Startpage, Yahoo), with freshness filters (past day/week/month/year), region/locale and SafeSearch. One call for grounded, up-to-date web results — no keys, no scraping setup.$0.003 Base1456 ms12 payers93% up
  26. 86api.delx.ai/api/v1/x402/imageDelx Commerce cheap image generation API for agents at $0.01 USDC. Call when you need a product visual, ad creative, thumbnail, banner, logo concept, or social graphic with no API key or monthly plan. Commercial FLUX Schnell stills via x402 on Base or Solana—public WebP URL, SHA-256 receipt, and 11 aspect ratios. No subscription.$0.01 Base1335 ms10 payers93% up
  27. 86contextslim.friczero.com/fetch[MCP: fetch_result] Targeted JSONPath extraction (query param mode) from cached context reference.$0.001 Base1587 ms9 payers93% up
  28. 86x402-data-api.onrender.com/api/geoIP geolocation: country, region, city, coordinates, and timezone for any IPv4 or IPv6 address. Fast in-memory lookup for analytics, fraud, and personalization agents.$0.001 Base1302 ms9 payers93% up
  29. 86x402.payperbyte.io/feeds/earthquakesEarthquakes — latest PayPerByte broadcast ($0.0030 / call, ~300B)$0.003 Base1620 ms8 payers93% up
  30. 86api.oblique.markets/api/v1/paid/bazaar-price-statsUse when an agent needs bazaar price stats. Returns x402 Bazaar price distribution across the latest daily full-catalogue snapshot: min/p25/p50/p75/p90/max in atomic units and USD, USD price bands with shares, and per-network listing counts with median price. Optional ?network= filter. $0.002.$0.002 Base1540 ms8 payers93% up
  31. 86chain.cyberwarex.com/ensENS name resolution in both directions on Ethereum mainnet. Pass name to resolve an ENS name to its address (forward), or pass address to get that address's primary ENS name (reverse, forward-verified so spoofed reverse records are rejected). Read straight from the ENS registry. Use it to turn vitalik.eth into an address, or to label a raw address with a human-readable name.$0.003 Base1691 ms7 payers93% up
  32. 86crypto.apitoll.cloud/v1/crypto/chartHistorical token price time series by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, or base:0x…): a dated array of prices for up to 20 coins, with selectable span (number of points) and period (1d, 1h, 1w). For charting, backtesting, and trend analysis. Pairs with /v1/crypto/price for the live spot. Sourced from DefiLlama.$0.001 Base1759 ms7 payers93% up
  33. 86api.kakerapetit.dev/v2/calendarEDINET filing calendar: annual securities reports (yukashoken hokokusho) filed by Japanese listed companies in a date range. Returns company code, EDINET document ID, fiscal period, accounting standard (JGAAP/IFRS/USGAAP) and the exact filing timestamp for each report — track new disclosures, trigger data pipelines, or find which Japanese stocks just reported. Query: /v2/calendar?from=2026-06-20&to=2026-06-30 (max 92 days per request).$0.002 Base2137 ms7 payers93% up
  34. 86proxy.aproxpay.com/v1/proxyResidential proxy fetch (up to 2MB). Returns HTTP 200 with the target body; read X-Target-Status for the origin status. Billed for the forwarded request, not for a 2xx origin response. For larger responses use /v1/proxy/large; at >17 requests a session pass is cheaper.$0.003 Base1787 ms7 payers93% up
  35. 86penny402.fun/obliqueOne original constraint card in the tradition of lateral-thinking decks: a short instruction, reversal or question you can apply to whatever is stuck, written fresh by a model at high temperature on every call. The cards are ours, never a card from any published deck. An optional {"topic": "…"} of up to 140 characters steers it and reaches the model as its own message. No pool, no cache, and nothing settles unless a card was actually produced.$0.0025 Base1267 ms7 payers93% up
  36. 86x402.fenixfoundry.com/resolutionDid it happen? Check whether a prediction market event has settled on Polymarket or Kalshi and get the resolved outcome, resolution time, source and market URL. A cheap oracle for agents that must verify a real-world outcome before acting.$0.005 Base1766 ms7 payers93% up
  37. 86vedetta.dethboy.com/v1/feedRecent analyst desk posts as a stream (?since_id=&asset=&limit=): cached, instant, half a cent. Poll it cheaply; escalate to a live read when something moves. Descriptive research, not financial advice.$0.005 Base1814 ms7 payers93% up
  38. 86api.geoprimitives.dev/v1/timezoneGive it a longitude and latitude and it answers with the IANA timezone identifier (America/New_York), the UTC offset in force there right now, whether daylight saving is currently in effect and by how much, the local wall-clock time, and the zone's standard offset. Pass an optional ISO 8601 `at` instant to ask about any moment between 1900 and 2100 instead of now, which is what you want when scheduling something months out across a DST boundary. Parameters go in the query string: this is a GET, there is no body. Two halves, with different vintages, and the difference matters. The offset and the DST rules come from the runtime's own timezone database and are current: a rule change reaches this endpoint when Cloudflare updates ICU, with no redeploy here. The *boundaries* come from tz_world (efele.net), CC0 1.0 and derived from VMAP0, a public-domain US government product. That map was frozen at tzdb 2016d in May 2016, and this catalog sells public-domain and permissively-licensed data only, which is why it is used rather than the current OpenStreetMap-derived alternative. What the vintage costs, measured against IANA's own coordinates for all 312 zones in zone1970.tab rather than estimated: 293 agree. Of the 19 that do not, 7 are Antarctic research stations, which this map does not cover at all and which fall back to the open-water rule; 7 more return a different identifier for the identical offset and DST all year (Australia/Brisbane for Australia/Lindeman, America/Regina for America/Swift_Current, and five like them), so the time is right and only the name is old. That leaves four regions where the answer is up to one hour wrong because the zone was split after 2016: Chilean Magallanes and Aysen (answered as America/Santiago rather than America/Punta_Arenas or America/Coyhaique), the Mexican border municipalities around Ciudad Juarez, Saratov Oblast in Russia, and the weeks each spring when Asia/Hebron and Asia/Jerusalem change on different dates. If you query inside one of those, do not trust this endpoint. Boundary precision is a separate question from vintage. The map is indexed as compacted H3 cells at resolution 6, whose half-width is about 1.6 km, chosen to match VMAP0's own stated positional accuracy of roughly 2 km rather than to flatter the index. So a point within a couple of kilometres of a zone border may be attributed to the neighbour, and no amount of the source's precision would fix that because the source does not have it. Away from a border the answer is exact. Every answer says where it came from under `source`. `boundary` means the point is inside a mapped timezone polygon and is the answer you are paying for. `coastal` means it is over water or on land this map does not cover, and the identifier is the nearest zone within about 60 km -- correct for a harbour or a coastal city whose coordinate falls just offshore, and not a boundary result. `nautical` means open water more than about 60 km from mapped land, answered with the tz database's own rule for international waters, meridians 15 degrees apart; it is not the time kept aboard any vessel and it ignores territorial waters. Longitude and latitude are checked against EPSG:4326 bounds before anything else touches them, because H3 silently normalises an out-of-range latitude into a real but wrong cell rather than refusing it. Reproject with POST /v1/transform first if you are not already in WGS 84. The DST flag is decided on offsets rather than on the tz database's own isdst bit, so Europe/Dublin reads as daylight saving in summer like everywhere else, and it is measured over a window either side of the instant so that a zone which changes its standard offset mid-year -- Asia/Almaty in 2024 -- is not mistaken for one on daylight saving.$0.005 Base1484 ms7 payers93% up
  39. 86madoromi.fun/api/agent/interpret/fullJapanese dream-interpretation agent API. Returns a Gemini-generated full interpretation from madoromi's curated dream-motif knowledge base (result schema agent-dream-insight.full.v1). Japanese output only. Dream text is never stored or logged. Async by default: the paid POST returns a job id in seconds; fetch the result with a plain free HTTP GET (no x402 client) at /api/agent/interpret/result/{job_id} (ready in ~15s). options.sync=true for one sync response (10-20s; client timeout 60s+).$0.01 Base1562 ms7 payers93% up
  40. 86human.twin3.ai/v1/humanHuman verification for AI agents — proof of humanity, sybil resistance, and 'is this wallet a real person' answers in one paid call. Returns two ZK-style outputs about any EVM wallet: (1) total humanity score 0-255 (15 = baseline reCAPTCHA, 45 = + Google OAuth, 70 = + Apple ID, 105 = + 2FA, 255 = full stack), with optional `min_score=N` for a yes/no `passes` verdict; (2) per-method verification check via `check=telegram,apple,g2fa,...` — buyer must NAME the methods to ask about, we never enumerate the full set. Backed by 141,871 Twin Matrix Soulbound Tokens on BNB Chain plus the canonical humanity registry off-chain. The underlying verification list never leaves Twin3 — only verdicts.$0.001 Base1049 ms7 payers93% up
  41. 86houjin.agentic-jp.com/statsDataset metadata for this Japanese (JP) corporate-number API — how many corporations are loaded and which prefectures are covered.$0.001 Base1261 ms7 payers93% up
  42. 86api.insumermodel.com/v1/attestSigned attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain wallet conditions across 37 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, account code (plain key, EIP-7702 delegation, or contract), and agent standing (ERC-8004 registration, ERC-7710 delegation validity). A verifiable boolean, never raw balances or code. Up to 10 conditions per pay-per-call request. Pay in USDC on Base, Polygon, Arbitrum, Arc, or Solana.$0.05 Base1483 ms6 payers93% up
  43. 86defillama.use.x402atlas.com/dexsDEX volumes by DefiLlama — all decentralized exchanges with trading-volume summaries and charts.$0.005 Base1244 ms6 payers93% up
  44. 86squeezeos-api.onrender.com/api/web/creditsWeb scraping and extraction credit pack for AI agents: 10 accepted public-URL clean-text reads at a micro-price with no scraper subscription$0.005 Base1436 ms6 payers93% up
  45. 86squeezeos-api.onrender.com/api/x/searchPublic X/Twitter search API for AI agents. Search recent public posts by keyword without requiring the caller to maintain a separate X developer account.$0.0048 Base1254 ms6 payers93% up
  46. 86x402.devvizion.com/v0/outlineResearch outline 0.01 USDC (first pay · Base). Ladder: free GET /v0/sample-outline.json → POST /v0/outline → brief 0.02. Machine settle: GET /first-buy.json · lander /start · /.well-known/x402.$0.01 Base1455 ms6 payers93% up
  47. 86x402endpoint-utiwoa54hq-uc.a.run.app/authGet a Firebase ID token for authenticating with the callable APIs$0.001 Base1676 ms6 payers93% up
  48. 86quartermaster.surewhynot.app/v1/x402/inspectInspect and lint any x402 paid endpoint: decodes the 402 payment challenge, names the network and asset, and flags misconfigurations including missing Bazaar discovery metadata.$0.002 Base1203 ms6 payers93% up
  49. 86www.celerapi.com/v1/company/searchSearch authoritative company registries by company name to resolve candidate legal entities and registration identifiers. Currently supports the United Kingdom (GB) and Norway (NO), with expanding jurisdiction coverage. Results are public-register evidence, not a KYC or KYB compliance determination.$0.005 Base2334 ms6 payers93% up
  50. 86mcp.yield.xyz/x402/yields_get_allDiscover DeFi yield opportunities across 80+ networks — 3,300+ staking, lending, vault, and RWA yields from Lido, Aave, Morpho, and more. Filter by token, network, yield type, or provider and sort by APY or TVL. Returns yield IDs (needed by every other tool) with APY, TVL, lock-up/cooldown periods, and KYC gating. Start here.$0.001 Base1352 ms6 payers93% up
  51. 86tollbooth-hello.sjwilliams8.workers.dev/helloTest endpoint for verifying x402 payment integration end to end. Returns a static greeting in the Agent Tollbooth standard response envelope. Not a data product — use it to smoke-test your x402 client for $0.001 before calling our compliance endpoints: OFAC sanctions screening ($0.01) and FDIC bank verification ($0.01), listed under this same payTo address.$0.001 Base1046 ms6 payers93% up
  52. 86vme5zb7fll.execute-api.us-east-1.amazonaws.com/v1/accept/csvValidate CSV before import using a fixed JSON column specification. Checks missing/extra columns, required cells, string/integer/decimal/boolean/date types, uniqueness, allowed values and numeric/row-count bounds. Returns pass/fail with row/column error codes. POST JSON with csv and spec.columns; schemas/examples attached. Full contract: /openapi.json. Max 2,000 rows, 50 columns, 256 KiB; first 50 failures. No formulas, cross-column rules, fact checking or data repair.$0.05 Solana1048 ms6 payers93% up
  53. 86pro-api.coingecko.com/api/v3/x402/onchain/simple/networks/base/token_price/:addressQuery onchain DEX token price & market data based on the provided token contract addresses on a network.$0.01 Base1130 ms5 payers93% up
  54. 86asn-lookup.underscoredone.com/lookupGiven an internet address (IP) or a network identification number (ASN), this tool returns who operates that piece of the internet: the network number, the owner's name, the country it's registered in, the regional registry that manages it, and the exact address range it belongs to.$0.01 Base1844 ms5 payers93% up
  55. 86geodns.iwsolutions.ca/api/resolveGeo-located DNS resolution — resolve hostnames from specific countries to see how CDNs, geo-blocking, and DNS-based routing differ by region.$0.005 Base1606 ms5 payers93% up
  56. 86sat.ipintel.ai/address-to-coordinatesWorldwide forward geocoding for agents. Convert an address, landmark, city, postcode, or place name into latitude and longitude with normalized address components and confidence metadata.$0.002 Base2129 ms5 payers93% up
  57. 86x402.tbs-digital.com/crypto/bundleComplete crypto and DeFi snapshot in ONE call for AI agents: spot prices for your tokens, full market data (market cap, 24h volume, supply, 24h change) for the lead token, top-10 chains by TVL, and the best yield pools by APY. Prices, market, TVL and yields together — the most complete crypto+DeFi call per request.$0.001 Base1654 ms5 payers93% up
  58. 86store.agentexchange.work/crypto/pricesLatest crypto token prices by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, bitcoin, or base:0x…): current spot price, token symbol, decimals, and a confidence score, for up to 50 coins in one call. Pass ?at=<unix> for the historical price at a point in time. Sourced from DefiLlama across every major chain. Also accepts legacy ?ids=bitcoin,ethereum.$0.01 Base1650 ms5 payers93% up
  59. 86static-page-extractor.mekler.ai/v1/pages/extractFetch one public static HTML page after robots and public-address checks, then return bounded readable text, title, final URL and source links. Standard x402: POST the URL, sign the 402 and resend the same body. The 402 also returns an encrypted payment_request that pays for exactly the quoted fetch. No browser, login, summary or full-site crawl.$0.005 Solana904 ms5 payers85% up
  60. 86ffpipe.dev/v1/convertConvert any video to a clean, web-ready MP4. Provide a source URL or upload the file directly; the paid request returns a status URL to poll, and the finished MP4 (plus a thumbnail) is downloadable for 24 hours. Fixed price per conversion in USDC over x402; no account or API key. Failures on our side automatically mint a free retry voucher. Input up to 100 MB.$0.02 Base2135 ms4 payers93% up
  61. 86vape-x402.vapex402.workers.dev/data/bridgesVAPE bridges — Tracked bridges ranked by recent daily volume — bridge exploits are a top attack class, and this is the capital-flow data that category needs a source for.$0.01 Base2177 ms4 payers93% up
  62. 86api.agentmercantile.com/v1/portfolio-preflightBounded Ethereum/Base wallet/portfolio holdings evidence: inventory, partial DEX pricing coverage, concentration, and evidence gaps. Pre-action evidence-readiness check for whether that evidence is sufficiently complete for downstream factual reasoning. Not guaranteed net worth, investment advice, transaction approval, or execution.$0.01 Base1379 ms4 payers93% up
  63. 86api.clawinabox.xyz/paid/v1/guard/checkSpend-policy verdict for AI agents: POST a proposed spend, get allow/review/deny with the exact rules that fired (per-tx caps, per-agent daily ledger, destination allowlists, time windows) - 'review' can page a human on Telegram for approval before the agent proceeds. Pay per call.$0.01 Base1325 ms4 payers93% up
  64. 86api.statemind.ai/v1/x402/staticCheck Python for syntax errors, lint and type mistakes, unsafe constructs and hardcoded credentials, and against the examples the caller supplies, without running it.$0.01 Base1827 ms4 payers93% up
  65. 86keyronne.com/api/json-repairRepair malformed JSON text into valid parsed JSON: markdown code fences, single quotes, smart quotes, unquoted keys, trailing commas, comments, Python literals (True/None), raw newlines in strings, and truncated output (auto-closes strings, arrays and objects). Returns the parsed value plus a log of every repair applied. Built for LLM output that almost parses. POST a JSON body like: {"text":"```json\n{name: 'Ada', age: 36, tags: ['x',], active: True"}$0.001 Base1658 ms4 payers93% up
  66. 86kronossignals.com/api/v1/volatility/btcRealized volatility for 16 crypto assets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT): 7-day, 30-day, and 90-day annualized realized vol using three estimators (close-to-close, Parkinson, Garman-Klass) from Binance daily OHLC closed candles only. Essential for risk management, position sizing, and options pricing. Pay-per-call via x402.$0.02 Base1045 ms4 payers93% up
  67. 86tenderdelta-preview.mooncakemonkey1.workers.dev/x402/v1/searchSearch explainably qualified EU solar and battery tenders from an explicitly dated TED snapshot$0.01 Base1218 ms4 payers93% up
  68. 86kenoodl.com/preflightx402-preflight: confirm your wallet can transact, and see your balance, in one certified call. Pay $0.01 USDC on Base, get a signed on-chain-anchored receipt. The safe first transaction before you ship real volume.$0.01 Base1944 ms4 payers93% up
  69. 86agent.atinamos.co.uk/agent/json-repairDeterministic JSON validation and conservative repair for AI-agent payloads. Repairs unquoted object keys, single-quoted strings, trailing commas, Markdown code fences, UTF-8 BOMs and JSON-compatible Python literals, including nested or repeated defects. No LLM or invented data; every applied transformation is reported.$0.005 Base1622 ms4 payers93% up
  70. 86filedge.io/v1/parseParse SEC filings (10-Q, 10-K, 8-K, Form 4) and earnings transcripts into structured JSON. Supports EDGAR by ticker or direct URL.$0.05 Base1752 ms4 payers93% up
  71. 86netintel.dev/classifyClassify text into your own categories — zero-shot: supply 2–20 labels and Claude Haiku returns the best-matching category with confidence and per-label scores. Route, tag, triage, and detect intent or topic with your own taxonomy in one call.$0.005 Base1013 ms4 payers93% up
  72. 86qr.openverbs.com/v1/qrRender text (URL, vCard, Wi-Fi config, …) as a QR code — SVG string or PNG data URL.$0.004 Base487 ms4 payers90% up
  73. 86physics.openverbs.com/v1/listList every physical constant in the dataset, or only those in a given category (universal, adopted, electromagnetic, atomic, physico-chemical). Returns the constants, the total count and the set of available categories.$0.004 Base598 ms4 payers90% up
  74. 86google-patents.use.x402atlas.com/searchGoogle Patents search — find patents by technology, inventor or assignee with date, country, legal-status and classification filters; clean JSON with titles, snippets, dates, owners, PDFs and patent IDs.$0.02 Base1388 ms3 payers93% up
  75. 86regime.nsgoods.org/regimeCMC regime classification + strategy spec (USDC pay-per-call). Free preview: GET /regime/preview A bad or unsupported id returns 400; upstream failure returns 503; you are never charged for an error.$0.01 Base1026 ms3 payers93% up
  76. 86marketdata.use.x402atlas.com/insider-tradesSEC Form 4 insider transactions for a US stock — director/officer buys and sells with shares, price and value, a smart-money signal.$0.015 Base1704 ms3 payers93% up
  77. 86api.hyperextend.xyz/v1/liquidations/BTCForced-liquidation tape over a time window, reconstructed from the node-fills archive (Hyperliquid has no public liquidations feed). Each row is a trade row (coin, side, px, sz, time, hash, tid, users:[buyer, seller]) plus the liquidation markers (method market|backstop, markPx, liquidatedUser, dir). Priced per asset-hour ($0.005 base, $0.01 HIP-3/HIP-4) plus $0.05 per uncached archive hour pulled; up to 24 asset-hours/request, available ~2h after the hour closes.$0.111 Base1924 ms3 payers93% up
  78. 86lionx402.com/api/x402/social-signal-intel-jsonLION Social Signal Intel (HN + Reddit keyless attention/trend)$0.004 Base1064 ms3 payers93% up
  79. 86lionx402.com/api/x402/enrichment-tx-bundle-jsonLION Research Bundle — one-call enrichment + tx context$0.005 Base1026 ms3 payers93% up
  80. 86video.cyberwarex.com/transcriptYouTube video transcript extraction with per-segment timing. Returns the caption track as timed segments (start, duration, text) plus the full plain text, or as SRT subtitles. Uses the creator's manual captions when they exist and falls back to YouTube automatic captions. Never downloads media, so it stays fast and light. Cached per video and language. Use it to summarize a talk, quote a video with timestamps, or search inside video content.$0.003 Base1108 ms3 payers93% up
  81. 86pyfile-agent.taile3ff35.ts.net:10000/secret/listList secret metadata (id, label, reads, created_at) for an access token — no values returned.$0.002 Base762 ms3 payers90% up
  82. 86aayatai.com/uk/bank-holidaysOfficial UK bank holidays (England & Wales, Scotland, Northern Ireland) from GOV.UK. Is a date a working day, the next holidays, working days between two dates, or the date N working days after a date (deadlines, SLAs, delivery estimates).$0.001 Base1085 ms3 payers93% up
  83. 86flat-rate-llm.kikoribera03.workers.dev/v1/red/whoisRegistration data for one domain, read from the registry's own RDAP service through the IANA bootstrap — not scraped from port-43 whois text. Returns creation, expiry and last-change dates, age and days to expiry, registrar, EPP status codes, nameservers, DNSSEC and the abuse contact. TLDs with no RDAP server say so instead of reporting the domain as unregistered. No API key, no account.$0.005 Base58 ms3 payers77% up
  84. 86api.dripmetrics.ai/metrics/vpinDripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. VPIN measures volume-synchronized order-flow imbalance (an adverse-selection proxy, not a probability); see excessVpin. Discovery examples use the latest 30m window.$0.05 Base1162 ms3 payers93% up
  85. 86chain.openverbs.com/v1/blockLive block summary by number, hex, or tag (latest/earliest/pending/safe/finalized; default latest): number, hash, parent, timestamp (unix + ISO), transaction count, gas used/limit, base fee and miner. Reads live on-chain data with automatic endpoint fallback.$0.001 Base380 ms3 payers90% up
  86. 86scan.openverbs.com/v1/redactReturn the input text with every detected PII span replaced. `mode` controls the replacement: "label" (default) → `[EMAIL]`; "mask" → the value covered with a mask character; "hash" → `[EMAIL:1a2b3c4d]`, a stable per-value fingerprint so equal values stay linkable without exposing them. Same validated detectors as `/detect`. Fully offline.$0.004 Base364 ms3 payers90% up
  87. 86text.openverbs.com/v1/diffDiff two texts. The default `unified` mode returns a unified-diff patch string; `lines`, `words`, and `chars` modes return a structured array of added/removed/unchanged parts.$0.002 Base410 ms3 payers90% up
  88. 86astro.openverbs.com/v1/sunCompute sunrise, sunset, solar noon and day length for a latitude/longitude (east-positive) and date, using the NOAA sunrise equation. All times are UTC ISO-8601. Locations in polar day or night return null rise/set with a `polar` flag — a successful result, not an error.$0.004 Base520 ms3 payers90% up
  89. 86phone.openverbs.com/v1/parseParse, validate and format a phone number — E.164/national/international/RFC 3966, region and line type (syntactic validation, no carrier lookup).$0.002 Base351 ms3 payers90% up
  90. 86unicode.openverbs.com/v1/nameReverse lookup: resolve a Unicode character name (e.g. 'SNOWMAN', 'CJK UNIFIED IDEOGRAPH-4E2D', 'HANGUL SYLLABLE GA') to its code point. Loose whitespace/case matching. An unknown name is a successful `found:false`.$0.002 Base543 ms3 payers90% up
  91. 86wikidata.openverbs.com/v1/entityFetch a Wikidata entity by Q-id: label, description, aliases and its claims (property → values).$0.006 Base407 ms3 payers90% up
  92. 86ical.openverbs.com/v1/createBuild a valid .ics document from event fields (summary, start/end, location, …).$0.002 Base343 ms3 payers90% up
  93. 86random.openverbs.com/v1/bytesGenerate cryptographically-secure random bytes, returned as hex, base64 or base64url.$0.002 Base464 ms3 payers90% up
  94. 86gleif.openverbs.com/v1/searchFind Legal Entity Identifiers by legal name, optionally filtered to an ISO 3166-1 alpha-2 country. Returns matching entities with their LEI, verified legal name, registration status, jurisdiction and city/country - the reverse of lookup, for when you have a company name but need its authoritative LEI and legal identity.$0.006 Base454 ms3 payers90% up
  95. 86distribution.openverbs.com/v1/tStudent's t distribution with df degrees of freedom (> 0). `function` selects the density (pdf), cumulative distribution (cdf) or quantile / inverse-CDF.$0.004 Base491 ms3 payers90% up
  96. 86combinatorics.openverbs.com/v1/catalanThe n-th Catalan number Cₙ = C(2n, n)/(n+1), counting balanced bracketings, binary trees, and many other structures. Requires n ≤ 10000.$0.004 Base735 ms3 payers90% up
  97. 86api.locus.report/api/locus-wildfire-historyWFIGS interagency historical wildfire perimeters within about 5 miles of a US point, for buyer, owner and lender agents. Returns the same records as locus_wildfire_history. Use this when your client can only call paid x402 routes. Use locus_wildfire_history instead when you can call Locus free tools (REST tools/call or MCP).$0.01 Base1041 ms3 payers93% up
  98. 86socialintel.dev/v1/user/:username$0.01 Base1249 ms3 payers100% up
  99. 86agents.dyoeway.org/contactsExtract public business emails, phone numbers, and social profiles from a website. Batch-safe contact enrichment for autonomous agents. Input: website URL. Returns structured JSON.$0.01 Base1315 ms2 payers93% up
  100. 86laso.finance/send-bank-paymentSend dollars to a bank account by ACH. Requires a bank destination registered beforehand with addBankingDestination (list them at GET /bank-recipients), which in turn requires an approved banking profile. The on-chain x402 payment credits the user's account balance via the standard deposit webhook, so a payout that cannot be fulfilled leaves nothing stranded — retry, or recover the funds with POST /withdraw.$11.50 Base1971 ms2 payers93% up