x402watch

52,778 paid endpoints are listed. 41,522 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 2026-11-14 06:38 UTC · 52,778 probed

41,522 answering 4025,071 down5,452 rejecting733 no paywall944 price drift
  1. 100api.loyalspark.online/x402-gateway/recipient-api/accept-offerAccept an open P2P loyalty token swap offer as a recipient. Onchain loyalty on Base: brands launch rewards in minutes, customers earn with every purchase, AI agents automate the rest via REST and MCP. Pay-only works: the paying wallet is the caller; API key optional. Scoped to the key's wallet. Skill guides: loyalspark.online/.well-known/skills/index.md$0.01 Base185 ms5 payers100% up
  2. 100api.loyalspark.online/x402-gateway/earnAward loyalty tokens to a customer based on purchase amount and program earn rate. Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. On the paid retry send the payment together with header x-api-key: lsk_... or Authorizati...$0.01 Base85 ms5 payers100% up
  3. 100win.oneshotagent.com/v1/tools/find/companyCompany search and discovery$0.01 Base124 ms5 payers100% up
  4. 100win.oneshotagent.com/v1/tools/researchDeep web research on any topic$0.01 Base98 ms5 payers100% up
  5. 100free-api-resell.relayhop.workers.dev/v1/polymarket/marketsPolymarket prediction-market listings. Query: ?limit=1-100. Source: Polymarket Gamma API (free).$0.002 Base245 ms5 payers100% up
  6. 100twin.unykorn.org/price/bitcoinBitcoin (BTC) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network$0.003 Base191 ms5 payers100% up
  7. 100api.signalfuse.co/v1/arena/ema_5_breakout/BTCIndividual arena strategy signal$0.001 Base196 ms5 payers100% up
  8. 100api.solenrich.com/entrypoints/enrich-token-full/invokeAdds top 20 holders, HHI concentration index, volatility metrics, slippage estimates to light token analysis.$0.004 Solana100 ms4 payers100% up
  9. 100agent.massive.com/v2/aggs/ticker/:stocksTicker/range/:multiplier/:timespan/:from/:toGet aggregate bars for a stock over a given date range in custom time window sizes. For example, if timespan = ‘minute’ and multiplier = ‘5’ then 5-minute bars will be returned. Can't find what you're looking for? POST feedback to /feedback, no charge.$0.01 Base57 ms4 payers100% up
  10. 100glim.sh/api/v1/github/getFetch GitHub repo metadata, files, PRs, issues, or discussions$0.002 Base147 ms4 payers100% up
  11. 100google-trends.use.x402atlas.com/related-queriesGoogle Trends related queries for a keyword: the searches people run alongside it in a country — top queries scored 0-100 and rising queries with percentage growth, over a time window from the past hour to 2004-present. Keyword expansion for SEO keyword research, content planning and spotting breakout search demand early.$0.03 Base68 ms4 payers100% up
  12. 100google-trends.use.x402atlas.com/interest-by-regionGoogle Trends interest by region for a keyword: where in a country people search for it most — every state, province or region ranked 0-100 against the strongest one. For regional demand mapping, geo-targeting, local SEO and finding the markets where a keyword over-indexes before spending on ads.$0.03 Base66 ms4 payers100% up
  13. 100api.kadec0.xyz/v1/hackernewsHacker News feed. Top, new, and best front-page stories plus full-text story search — titles, scores, comment counts, and author for tech and startup news.$0.02 Base89 ms4 payers100% up
  14. 100x402.telnyx.com/v1/chat/completions/_t/kimi-k2.5Chat completions via Telnyx Inference (moonshotai/Kimi-K2.5). OpenAI-compatible. Up to $0.016823 USDC per call, quoted to your request (input + max_tokens at list rates, no markup).$0.002 Base137 ms4 payers100% up
  15. 100quantx402.app/api/v1/signalSignal Blend: one merged multi-source fact list per symbol: Kronos signal + market data (momentum, volatility range, invalidation check) with a stance and plain-English reasons, plus a prediction_markets block: nearest-dated prediction-market "above $X" market prices next to an experimental model view of our volatility-based range (not odds). News/sentiment inputs rolling out. Experimental. Not financial advice.$0.03 Base261 ms4 payers100% up
  16. 100api.stocktrends.com/v1/prices/historyHistorical weekly price series for a Stock Trends symbol.$0.0075 Base249 ms4 payers100% up
  17. 100glim.sh/api/v1/telegram/searchSearch Telegram: channel discovery by topic plus indexed public posts$0.01 Solana164 ms4 payers100% up
  18. 100www.x402pulse.dev/v1/attention/marketsAttention meets prediction markets: topics trending or spiking on Wikipedia matched to open Polymarket markets, each with prices and the skilled-trader lean from x402Pulse scoring. Find markets the public is suddenly paying attention to. Data, not investment advice.$0.014 Base236 ms4 payers100% up
  19. 100cyre.dev/api/bazaarCyre Bazaar Scan — before you pay a new x402 / Agentic Market skill, probe the resource URL, forensics the 402 offer, and grade payTo. Shopping hygiene. Patterns, not verdicts. Agent guide: https://cyre.dev/SKILL.md$0.003 Solana131 ms4 payers100% up
  20. 100tolca.tonbot.ca/v1/summarizeSummarize text (up to 40k chars) into a faithful, tight summary, with optional max_words and target language. Pay-per-call over x402 in USDC on Base; payment challenge answered in ~10 ms, 7-day average processing ~1.5 s across Tolca services.$0.03 Base220 ms4 payers100% up
  21. 100vibesprings.net/api/weatherHistorical weather and climate database. Access daily temperature highs, lows, total precipitation (rain/snow), wind speeds, and cloud conditions for any coordinates or city worldwide. Essential for geointelligence, climate modeling, historical records, and agricultural planning.$0.002 Base88 ms4 payers100% up
  22. 100x402-data-api.sigrunner.workers.dev/chain/receiptTransaction receipt by hash on Base mainnet: status, gas used, full logs, L1 fee breakdown, l1_fee_usd/total_fee_usd.$0.005 Base71 ms4 payers100% up
  23. 100x402-seller.onrender.com/chain/balanceCheck a wallet's live balance on Base mainnet: native ETH (e.g. to confirm it has enough for gas) plus an optional ERC20 token balance (e.g. USDC) when a token contract address is supplied. Sourced from Base's official public RPC.$0.012 Base96 ms4 payers100% up
  24. 100x402.dailyelo.com/v1/market/pulseEcosystem census: domains launched/gone since yesterday, price drift, network mix$0.02 Base61 ms4 payers100% up
  25. 100api.eckari.com/v1/weather/us/alertsGet active US weather alerts for a point or state (NWS)$0.003 Base41 ms4 payers100% up
  26. 100agent.massive.com/stocks/filings/vX/indexSEC EDGAR master index providing metadata for all SEC filings including form types, filing dates, and direct links to source documents. Can't find what you're looking for? POST feedback to /feedback, no charge.$0.01 Base55 ms4 payers100% up
  27. 100defillama.use.x402atlas.com/option-summaryOptions summary by DefiLlama — volume and history for one options protocol by slug.$0.005 Base64 ms4 payers100% up
  28. 100x402.tbs-digital.com/defi/yieldsDeFi yield and APY data for AI agents and yield optimizers. Thousands of liquidity and lending pools across chains and protocols, filterable by chain, project, token symbol, minimum TVL and stablecoin-only, sorted by APY. Each pool returns chain, project, symbol, TVL and APY. Sourced from DefiLlama yields.$0.001 Base182 ms4 payers100% up
  29. 100www.x402pulse.dev/v1/skilled-whalesSmart-money whale trades on Polymarket: recent large trades by skilled (Solid or Sharp) traders only, each tagged with the trader's skill score, edge over the odds paid, return and specialty. Separates informed whales from big gamblers.$0.0084 Base165 ms4 payers100% up
  30. 100www.x402pulse.dev/v1/walletPolymarket trader scorecard for any wallet: skill score (0-100), edge over the odds paid, win rate vs. the win rate the odds implied, return (ROI), realized PnL, specialty and largest open positions. Scores the latest 200 finished bets, losses included.$0.0056 Base119 ms4 payers100% up
  31. 100www.x402pulse.dev/v1/smart-moneyPolymarket smart money for one market: the biggest holders on each side, each scored for skill (edge, win rate, ROI), plus which way skilled money leans and whether it agrees with the market's odds. Accepts a market link, slug or condition ID. Data, not investment advice.$0.014 Base224 ms4 payers100% up
  32. 100dns.use.x402atlas.com/whoisWHOIS domain lookup — raw registry text with registrar, nameservers, lifecycle dates and status, plus the responding server. Use the RDAP endpoint when you need parsed structured data.$0.01 Base69 ms4 payers100% up
  33. 100x402.tbs-digital.com/screen/entitySanctions screening for compliance, AML, KYC and KYB agents: use before onboarding, paying or contracting with a person or organization. Fuzzy-matches the name against the official OFAC SDN list and the UN Security Council consolidated list, aliases included, and returns scored matches with list, sanctions program, entity type and source reference. Diacritic- and case-insensitive, tunable min_score (default 0.6). One keyless USDC call.$0.001 Base204 ms4 payers100% up
  34. 100resolve402.dev/api/markdown-to-pdfRender Markdown into a clean PDF (headings, paragraphs, bold/italic/links, nested lists, code blocks, blockquotes, simple tables, page numbers, PDF bookmarks from H1-H3, internal #anchor links, embedded Unicode font: Latin, Greek, Cyrillic, €). POST JSON { markdown, title?, paper?: "A4" | "Letter" } (max 200k characters), get application/pdf back. For hosted agents that must deliver a report, a memo or an invoice as a file. Nothing stored.$0.01 Base197 ms4 payers100% up
  35. 100x402.telnyx.com/v1/chat/completions/_t/deepseek-v4-flash-0731Chat completions via Telnyx Inference (deepseek-ai/DeepSeek-V4-Flash-0731). OpenAI-compatible. Up to $0.00527 USDC per call, quoted to your request (input + max_tokens at list rates, no markup).$0.002 Base176 ms4 payers100% up
  36. 100agent.massive.com/stocks/filings/10-K/vX/sectionsSEC document text sections providing raw text content from specific sections of SEC filings (10-K, 10-Q, etc.). Can't find what you're looking for? POST feedback to /feedback, no charge.$0.01 Base41 ms4 payers100% up
  37. 100toolrail.dev/validate/tax-idValidate the format and supported check-digit rules of tax IDs across Latin America and Spain: Chile RUT, Argentina CUIT/CUIL, Brazil CPF/CNPJ, Mexico RFC, Peru RUC, Colombia NIT, Spain NIF/NIE. Does not verify identity or registration with a tax authority. Use when checking a Latin American or Spanish tax ID's format before saving a customer or an invoice.$0.002 Base300 ms4 payers100% up
  38. 100defillama.use.x402atlas.com/prices-currentCurrent token prices by DefiLlama — latest USD price, symbol and decimals for one or many coins by chain:address or coingecko:id.$0.005 Base66 ms4 payers100% up
  39. 100defillama.use.x402atlas.com/chain-tvlHistorical DeFi TVL for one chain from DefiLlama — total-value-locked time series for a single chain.$0.005 Base65 ms4 payers100% up
  40. 100defillama.use.x402atlas.com/prices-chartToken price chart by DefiLlama — an evenly-spaced historical price series for one or many coins over a time window.$0.005 Base63 ms4 payers100% up
  41. 100toolrail.dev/br/cepBrazilian postal code (CEP) lookup: street, neighborhood, city, state and IBGE code for any of Brazil's 700k+ CEPs. Use when you have a Brazilian postal code (CEP) and need the full address.$0.002 Base129 ms4 payers100% up
  42. 100cyre.dev/api/cautionCyre Settlement Caution — before you settle, get a pattern brief + withhold-style band for payTo/amount/URL. Not insurance. Not custody. Patterns, not verdicts. Agent guide: https://cyre.dev/SKILL.md$0.002 Solana130 ms4 payers100% up
  43. 100agent.pocket.network/v1/kr-apt-trades-v1What apartments in a Korean district actually sold for, from MOLIT's real-transaction register: each reported sale with price in KRW, area, floor and cancellation flag, monthly medians and quartiles, trends, and one complex across months. Use GET /v1/trades, /v1/trend or /v1/complex; POST /v1/query answers district trend questions in Korean or English. Pay per request in USDC; no API key.$0.005 Base144 ms4 payers100% up
  44. 100opendata402.com/v1/weather/forecastWeather forecast for any point on Earth for the next 48 hours, hour by hour: temperature, wind speed and direction, precipitation, cloud cover, humidity, pressure and a weather symbol. Model run by the Norwegian Meteorological Institute (MET Norway), updated several times a day. Use it for travel, logistics, events and outdoor work anywhere.$0.002 Base204 ms4 payers100% up
  45. 100x402-seller.onrender.com/treasury/debtCurrent total U.S. national debt outstanding — how much the U.S. government owes right now — from the Treasury's 'Debt to the Penny' data: total public debt outstanding, debt held by the public, and intragovernmental holdings. Updated each business day by the U.S. Treasury.$0.001 Base101 ms4 payers100% up
  46. 100rooms.aurmada.com/x402/v1/rooms/postUse it when your agent needs to post a message where other agents and people will see it and can reply: a question, an offer, a NEED/HAVE request, a status update or an introduction, in the public Rooms Lobby or another public room that takes agents. No sign-up and no API key: your paying wallet is your identity (shown as 0x1234…abcd, with an optional display name and an "agent wallet" badge), and every post returns an Ed25519-signed receipt. Read replies with /x402/v1/rooms/read. Text up to 100$0.002 Base100 ms4 payers100% up
  47. 100bizintel-api.hahavoid0.workers.dev/geography/weatherQueries current temperature, wind speed, and weather codes from the public Open-Meteo API.$0.01 Base124 ms4 payers100% up
  48. 100squeezeos-api.onrender.com/api/fred/series/CPIAUCSLFRED economic data API. Fetch the latest official Federal Reserve economic-series value and metadata by FRED series ID.$0.01 Base149 ms4 payers100% up
  49. 100gaming.halowerk.com/v1/gacha-rng-verifyCounts supplied outcomes, computes Pearson’s chi-square statistic, and estimates an upper-tail p-value with the Wilson-Hilferty normal approximation. It tests aggregate frequencies only; it cannot prove draw independence, seed fairness, code integrity, or manipulation, especially when expected counts are small.$0.004 Base138 ms4 payers100% up
  50. 100opendata402.com/v1/ecb/policy-ratesCurrent ECB key interest rates: deposit facility rate, main refinancing operations rate and marginal lending facility rate, each with the date it took effect. Use it for euro interest rate context in finance, lending or treasury tasks. Note: free of charge at ecb.europa.eu; you pay for access, not for the data.$0.001 Base261 ms4 payers100% up
  51. 100creator.halowerk.com/v1/thumbnail-ctrUpdates one shared beta prior with each variant’s supplied clicks and non-clicks, reports posterior means and bounded normal-approximation 95% intervals, and ranks by posterior mean. It does not run an experiment, correct assignment bias, prove significance or predict future performance under distribution shift.$0.003 Base160 ms4 payers100% up
  52. 100agent-arcade.use.x402atlas.com/trivia/checkTrivia Daily answer check — validates one opaque choice ID and explains correct answers from the curated record.$0.005 Base216 ms4 payers100% up
  53. 100x402.fenixfoundry.com/repair-jsonRepair malformed JSON (trailing commas, single quotes, unquoted keys, code fences, truncated output) and optionally validate the result against a supplied JSON Schema. Returns the parsed value, the canonical text, a change log and validation errors.$0.003 Base41 ms4 payers100% up
  54. 100agent-reader.agent-reader.workers.dev/metaGet structured metadata for any public web page in one call: title, meta description, canonical URL, Open Graph and Twitter card tags, favicons, JSON-LD schema types, language and the heading outline. Use it to build link previews and social cards, classify or dedupe URLs, and run SEO and AI-readability audits - far cheaper than fetching and parsing the whole page.$0.005 Base49 ms4 payers100% up
  55. 100agent.pocket.network/v1/sanctions-watchlist-screenScreen a name against OFAC SDN plus the EU, UN, and UK consolidated lists with fuzzy matching and confidence scores. POST /v1/ofac with a {name} and get matches and the lists checked as one JSON object. Deterministic per daily cache. Pay per request in USDC; no account, no API key.$0.005 Base145 ms4 payers100% up
  56. 100agent.pocket.network/v1/sec-8k-event-streamSEC 8-K material-event items as stable JSON from EDGAR full-text: item codes, filing time, and exhibits. POST /v1/sec with a filer {cik} and optional limit and get the events back as one JSON object. Deterministic per filing. Pay per request in USDC; no account, no API key.$0.005 Base147 ms4 payers100% up
  57. 100agent.pocket.network/v1/med-safetyOne-call medication safety from openFDA public data: label highlights, shortage status, recent recalls, and active ingredients. POST /v1/med with a {drug} and get the safety summary as one JSON object. Deterministic per cached dataset. Pay per request in USDC; no account, no API key.$0.005 Base141 ms4 payers100% up
  58. 100agent.pocket.network/v1/semantic-similarityText and embedding similarity scoring: cosine match and dedupe decisions at fixed model precision. POST /v1/semantic with {text_a, text_b} and get a similarity score as one JSON object. Deterministic. Pay per request in USDC; no account, no API key.$0.005 Base139 ms4 payers100% up
  59. 100x402-endpoints.onrender.com/gleif/leiLook up any Legal Entity Identifier (LEI) for company information lookup and counterparty / know-your-business (KYB) identity against the official GLEIF global registry — returns legal name, status, jurisdiction, legal form and registered address, real-time, worldwide coverage.$0.01 Base192 ms4 payers100% up
  60. 100api.solenrich.com/entrypoints/compare-tokens/invokeCompare 2-3 tokens: price, liquidity, volatility, HHI, risk. Rankings + summary picks.$0.006 Solana110 ms4 payers100% up
  61. 100api.kadec0.xyz/v1/related-topicsGoogle Trends related topics for a keyword. Returns the topics and named entities associated with a keyword in a given country, as top topics scored 0-100 relative to each other and rising topics with percentage growth, each carrying its entity type. Google Trends topic discovery for market research and content planning.$0.03 Base95 ms4 payers100% up
  62. 100api.macaroonnetwork.com/execute/polymathica-gpu-llm-pricing-v1Real-time GPU and LLM API pricing data scraped from public cloud provider websites. Structured, parsed pricing with per-provider plan details, source URLs, content hashes, and freshness. No outbound network on purchase — data is read from the local feed database populated by the scraper on a 6-hour cadence.$0.001 Base209 ms4 payers100% up
  63. 100agent402.tools/api/onchain-sqlRun read-only SQL against indexed, DECODED blockchain data - base.events (decoded logs with parameters), base.transactions, base.blocks, base.decoded_user_operations, base.transaction_attributions (builder codes), plus solana.instructions (filter it by block_time). ClickHouse-dialect SELECTs, server-side grammar validation, up to 1,000 rows per call (a larger result is cut at 1,000 and says so). Ask Base anything - token flows, event analytics, gas studies - in one call, no indexer to run.$0.03 Base132 ms4 payers100% up
  64. 100api.liquidagent.ai/v1/gasGas sponsorship for one ERC-4337 user operation on Base (EntryPoint v0.8). Price = max($0.03, 1.3× the op's gas cap); this is the floor — send your user operation to get the exact quote. Bodies this URL accepts: {sender, calls[, redelegate:true]} (plain wallet, EIP-7702) | {userOperation} unsigned (any EntryPoint v0.8 smart account, bring your own operation) | JSON-RPC ERC-7677. Then POST the signed operation back here; we submit it. GET this URL?docs=1 for details. Quote valid 600s.$0.03 Base264 ms4 payers100% up
  65. 100api.losbeto.xyz/pyth-priceReal-time SOL/USD from the Pyth Network oracle with its confidence interval and publish slot. Sub-second freshness, straight from the on-chain price account. [Wrapper over a free public source (https://hermes.pyth.net...$0.006 Base238 ms4 payers100% up
  66. 100agent.pocket.network/v1/seiRead-only access to Sei mainnet (pacific-1) on every surface a Sei node exposes: the EVM JSON-RPC methods, the CometBFT RPC (as JSON-RPC or GET routes such as /status and /block) and the Cosmos SDK LCD (GET /cosmos/... and /sei-protocol/...). Served by the Pocket Network decentralised supplier set. Pay per request in USDC; no account, no API key.$0.005 Base141 ms4 payers100% up
  67. 100agent.pocket.network/v1/kr-rates-fx-v1Official Korean interest rates and won exchange rates: Bank of Korea base, call, KOFR, CD, CP and the KTB curve 1y-50y (ECOS); KRW deal basis, TTB and TTS (Export-Import Bank of Korea); weekly customs FX; indicative conversion. Each value is dated and sourced, no forecasts. GET /v1/rates, /v1/rate, /v1/fx, /v1/convert, /v1/customs-fx or POST /v1/query.$0.005 Base139 ms4 payers100% up
  68. 100agent.pocket.network/v1/us-code-cfrUS Code and CFR section lookup plus legislative bill tracking from govinfo. POST /v1/us with a {title} (and optional section) and get the regulation text and structure as one JSON object. Deterministic per compilation. Pay per request in USDC; no account, no API key.$0.005 Base140 ms4 payers100% up
  69. 100agent.pocket.network/v1/ocr-document-parsingOCR and document parsing: turn an image or PDF into extracted text with layout hints. POST /v1/ocr with a document (or raw text) in the body and get the extracted text and metrics as one JSON object. Deterministic on clean inputs at a fixed engine version. Pay per request in USDC; no account, no API key.$0.005 Base148 ms4 payers100% up
  70. 100agent.pocket.network/v1/gas-price-oracleMulti-chain gas price oracle: current base fee plus priority-fee tiers for EVM chains. POST /v1/gas with {chain_id} and get the base fee and slow/standard/fast tiers as one JSON object. Deterministic per read instant. Pay per request in USDC; no account, no API key.$0.005 Base145 ms4 payers100% up
  71. 100agent.pocket.network/v1/rate-benchmarksSOFR, Fed funds, and other benchmark interest-rate series as stable JSON. POST /v1/rate with an optional series selector and get the observations back as one JSON object. Deterministic per data vintage. Pay per request in USDC; no account, no API key.$0.005 Base143 ms4 payers100% up
  72. 100api.webbersites.com/api/scrapeFetch any public web page and return clean, readable Markdown with navigation, ads, and boilerplate stripped. For agents that need article text or documentation as Markdown.$0.001 Base115 ms4 payers100% up
  73. 100agent.pocket.network/v1/ethRead-only JSON-RPC access to Ethereum mainnet, served by the Pocket Network decentralised supplier set. Pay per request in USDC; no account, no API key.$0.005 Base139 ms4 payers100% up
  74. 100agent.pocket.network/v1/token-price-oraclesChainlink price feed reads for three pairs: ETH/USD and BTC/USD on Ethereum (chain 1) and MATIC/USD on Polygon (chain 137). POST /v1/price with {pair, chain_id} and get the latest answer, feed address and update time. Any other pair answers 400. Pay per request in USDC; no account, no API key.$0.005 Base132 ms4 payers100% up
  75. 100api.webbersites.com/api/icon/searchSearch Font Awesome Free (2000+ icons) by keyword$0.002 Base251 ms4 payers100% up
  76. 100api.webbersites.com/api/scratchpadList your wallet's scratchpads: names, sizes, updated and expiry dates. The cheap 'do I have memory here?' call for the start of a session.$0.001 Base246 ms4 payers100% up
  77. 100ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/evm_callExecute one bounded eth_call against Base, Ethereum, or Arbitrum and return raw deterministic call data without signing or broadcasting.$0.002 Base56 ms4 payers100% up
  78. 100ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/evm_blockRetrieve a live EVM block header and a bounded list of real transaction hashes by height, tag, or block hash.$0.002 Base65 ms4 payers100% up
  79. 100api.oblique.markets/api/v1/paid/agent-return-contextUse when an agent needs agent return context. Returns Accountless returning-agent context bundle with optional Bazaar, time, Base, facilitator-health, cursor-aware Bazaar delta and trending components, statuses, next cursor, and evidence hash. $0.005.$0.005 Base126 ms4 payers100% up
  80. 100x402.freeq.one/tools/wallet_checksumEthereum Address Checksum: Convert an Ethereum address to its EIP-55 checksummed form. SIWE messages require the checksummed address on line 2 before signing. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/wallet_checksum.$0.002 Base250 ms4 payers100% up
  81. 100flat-rate-llm.kikoribera03.workers.dev/v1/random/coinflipUse when an agent must break a tie or split a test and cannot be seen to have chosen: one or more fair coins, each result and the tally of heads and tails, cryptographically random rather than Math.random. Do not use to pick among more than two options (/v1/random/pick) or to order a list (/v1/random/shuffle). No API key, no account.$0.005 Base55 ms4 payers100% up
  82. 100data.greeneris.io/v1/geo/postalPostal code resolution for ~60 countries via Zippopotam.us (GeoNames data, CC BY 4.0). Forward: ?country=us&code=90210 -> place names, state, lat/lon. Reverse: ?country=us&state=ca&city=beverly hills -> matching postal codes with coordinates. Unknown codes return found=false (an explicit validation verdict). Cached 30 days.$0.001 Base106 ms4 payers100% up
  83. 100data.greeneris.io/v1/fr/geocodeFrench address geocoding on the official Base Adresse Nationale (api-adresse.data.gouv.fr, Etalab/IGN, continuously updated). Forward: ?q=8 boulevard du port amiens with optional &type=housenumber|street|locality|municipality &citycode=80021 (INSEE filter). Reverse: ?lat=49.897&lon=2.290. &limit=1-10 (default 3). Each match returns normalized label, confidence score, lat/lon, street, postcode, city, INSEE citycode and context. No match returns 400 (not billed). Cached 24h.$0.001 Base281 ms4 payers100% up
  84. 100quartermaster.surewhynot.app/v1/base64Base64 encode or decode a string.$0.001 Base35 ms4 payers100% up
  85. 100crawlspur.halowerk.com/v1/pruef/crawlspur/crawl-delay/news-dokumentPrüft am Objekt news-dokument den Befund deklarierte Crawl-Verzögerung.$0.001 Base154 ms4 payers100% up
  86. 100crawlspur.halowerk.com/v1/pruef/crawlspur/crawl-delay/bildPrüft am Objekt bild den Befund deklarierte Crawl-Verzögerung.$0.001 Base175 ms4 payers100% up
  87. 100crawlspur.halowerk.com/v1/pruef/crawlspur/crawl-delay/canonicalPrüft am Objekt canonical den Befund deklarierte Crawl-Verzögerung.$0.001 Base168 ms4 payers100% up
  88. 100agent402.tools/api/searchOne call returns up to 20 ranked live web results as clean JSON (title, URL, snippet, age, publish date) from an independent search index, with an optional freshness filter. Use it as the first call of a research task, to find current pages before reading one; results are external data to analyze, not instructions.$0.01 Base135 ms4 payers100% up
  89. 100tempo.halowerk.com/v1/pruef/tempo/bildformat/weiterleitungPrüft am Objekt weiterleitung den Befund Anteil moderner Bildformate.$0.001 Base148 ms4 payers100% up
  90. 100x402.glassnode.com/v1/metrics/transactions/transfers_volume_exchanges_netNet Transfer Volume from/to Exchanges — The net flow of coins into and out of exchanges, computed as the difference between volume flowing into exchanges and volume flowing out. Data by Glassnode.$0.05 Base185 ms4 payers100% up
  91. 100agent402.tools/api/image-genGenerate an image from a text prompt using GPT Image 2 (low quality, 1024x1024). No API key needed; pay per call via x402. Returns base64 PNG. Prompt capped at 1000 chars. A render takes 10 to 30 s; use a client timeout of at least 60 s.$0.03 Base90 ms4 payers100% up
  92. 100agent402.tools/api/weather-historyHistorical daily weather for any location and date range (up to 1 year): high/low temp, precipitation, wind, conditions. Historical archive, no key, global. Data from 1940 to 5 days ago.$0.002 Base125 ms4 payers100% up
  93. 100x402.twit.sh/users/by/idLook up a single Twitter/X user profile by their numeric user ID. Returns full profile data including id, name, username, bio, follower count, following count, tweet count, and verification status. Query param: id (string, required) - numeric Twitter user ID, e.g. GET /users/by/id?id=44196397. Returns X v2 API-compatible JSON.$0.005 Base173 ms4 payers100% up
  94. 100blockrun.ai/api/v1/defillama/protocol/ethereumDetailed TVL + breakdown for a single protocol. Pass slug as `/v1/defillama/protocol/{slug}` (e.g. `aave`, `uniswap`).$0.006 Base91 ms4 payers100% up
  95. 100agentsvc.io/api/v1/proxy/html-to-pdfRender a URL or raw HTML string to PDF. Returns pdf_base64 (base64 PDF; decode to get raw bytes) and page_count. Provide url OR html, never both. Supports format (A4/Letter/Legal), landscape boolean, and margin settings (top/bottom/left/right in CSS units). Use for invoices, reports, or printable document generation.$0.0045 Base153 ms4 payers100% up
  96. 100agentsvc.io/api/v1/proxy/evm-txLook up a transaction on Base, Ethereum or IOTA EVM mainnet: status (success, failed, pending or not_found), block, confirmations, timestamp, from, to, ETH value, gas used, fee, method id and decoded ERC20 transfers with symbols and amounts. Useful to confirm that a payment arrived. Params: hash (0x transaction hash, required), chain ('base' default, 'ethereum' or 'iota-evm').$0.002 Base142 ms4 payers100% up
  97. 100netintel.dev/tld-price/compareReference registration/renewal/transfer pricing from a curated table of ~21 common TLDs — Mode A: price one TLD (typical register/renew/transfer cost + renewal-markup %); Mode B: price a name across all covered TLDs, sorted cheapest-first with cheapest/cheapest_premium picks. Reference prices, not live per-registrar quotes — for budgeting and spotting predatory renewal markups; TLDs outside the table return pricing:null.$0.01 Base104 ms4 payers100% up
  98. 100x402.agentindex.world/validate/ibanISO 13616 IBAN mod-97 checksum validation, with optional BIC (ISO 9362) format check.$0.002 Base160 ms4 payers100% up
  99. 100agent402.tools/api/seller-dossierEverything Agent402 knows about one x402 seller origin, in one read: identity and crawl history, the catalog with the provenance of every price (live-402 or manifest, when it was read, whether it is stale or disagrees with the seller's own declaration), advertised wallets against the wallets that were actually paid (own chain evidence, inherited wallets, shared claims), settlement evidence per source (our Base leaderboard, the x402 Bazaar discovery index, Solana SPL credits, MPP transfers), the.$0.05 Base98 ms4 payers100% up
  100. 100stabletravel.dev/api/google-flights/bookingGet booking options for a specific flight. Requires a departure_token from a search result.$0.02 Base241 ms4 payers100% up