x402watch

22,937 paid endpoints are listed. 21,869 answered a real 402 at the last check.

Every x402 endpoint on the Coinbase Bazaar and x402scan, probed unpaid every six hours. A listing tells you the price a seller wrote down. This tells you whether the endpoint is reachable, whether it charges what it declared, and how fast it answers. Ranked by an assay score out of 100.

Last check 2026-10-02 12:47 UTC · 22,937 probed

21,869 answering 402548 down397 rejecting123 no paywall2,399 price drift
  1. 95content.hugen.tokyo/content/linksExtract and classify all hyperlinks from a web page — internal vs external using eTLD+1 domain matching. Returns up to 200 internal and 200 external links with counts. No web crawler setup needed. Accepts USDC payments on Base and Solana$0.01 Base739 ms4 payers100% up
  2. 95defi.hugen.tokyo/defi/chainsList all blockchain networks supported by this API's security scanning — Ethereum, BSC, Polygon, Arbitrum, Base, Optimism, Avalanche, Fantom, Solana, and 20+ chains with chain IDs and names. Accepts USDC payments on Base and Solana$0.01 Base630 ms4 payers100% up
  3. 95x402.billionaireorder.com/v1/virtual-traitsFor AI agents building agent swarms, synthetic users, NPCs, or trading bots. Input: archetype + prompt (e.g. 'risk-taking crypto founder'). Output: OCEAN Big Five + Dark Triad + trading psychology vector with emotional drift and memory anchors. M2M: use when you need consistent agent personality, backtest personas, or generate 1000s of synthetic traders. Pay-per-call USDC Base, no API key.$0.01 Base789 ms4 payers100% up
  4. 95free-api-resell.relayhop.workers.dev/v1/polymarket/marketsPolymarket prediction-market listings. Query: ?limit=1-100. Source: Polymarket Gamma API (free).$0.002 Base574 ms4 payers100% up
  5. 95monitor.memoryapi.org/x402/monitor/activityx402 API activity stats — top endpoints by paid calls, trend data, and unique payer counts from memoryapi.org nginx logs.$0.001 Base723 ms4 payers100% up
  6. 95agentkit-x402-buy.netlify.app/api/eth-priceETH/USD spot via AgentKit x402 — $0.001 USDC$0.001 Base616 ms4 payers100% up
  7. 95hello-world-x402.vercel.app/greetReturns personalized greeting - UPDATED SCHEMA v2$0.001 Base433 ms4 payers100% up
  8. 95agent.massive.com/v2/snapshot/locale/us/markets/stocks/tickers/:stocksTickerGet the most up-to-date market data for a single traded stock ticker. Note: Snapshot data is cleared at 3:30am EST and gets populated as data is received from the exchanges. This can happen as early as 4am EST. Can't find what you're looking for? POST feedback to /feedback, no charge.$0.01 Basedown3 payers97% up
  9. 95coingecko.use.x402atlas.com/coinCrypto coin metadata and market data by CoinGecko id — name, symbol, market-cap rank, price, homepage and categories for any token.$0.005 Base883 ms3 payers100% up
  10. 95scvd.store/api/buy/luckiesa lucky. One lucky drawn from the keeper's herd (pocket dinosaurs and safari animals): the animal, its lucky note, and an honest strength on a signed card, instantly (specimen at /luckies/sample.svg). Amounts above the minimum record as tips. Full listing: https://scvd.store/menu/luckies. MCP tool: buy_luckies.$0.99 Base791 ms3 payers100% up
  11. 95api.brazilayer.com/v1/cadeias/cafe_kcCausal chain for arabica coffee: minimum temperature forecast 72h ahead over the southern Minas belt (frost is the event that historically moves KC hardest, operational threshold 3 °C) → consecutive dry days stressing flowering → observed rainfall → the official BRL/USD rate that converts the international price for the grower. Brazil is the top arabica exporter. Physical signal only — bring your own price. Free sample, no payment: https://api.brazilayer.com/v1/cadeias/amostra$0.05 Base844 ms3 payers100% up
  12. 95x402.aispace.bot/api/v1/audio/speechText-to-speech on Venice voices (Kokoro, Qwen 3, xAI, Inworld, Chatterbox, Orpheus, ElevenLabs Turbo, MiniMax, Gemini Flash), paid per request in USDC on Base via x402, no API key. Resolve a model id from GET /api/v1/models?type=tts.$0.01 Base398 ms3 payers100% up
  13. 95scvd.store/api/buy/settlement_reconciliationSettlement Reconciliation. REQUIRES ?tx_hash= on the paid request — a signed request without it is refused before the gate and no money moves. A signed JSON observation of one Base transaction reconciling two numbers — the USDC that moved and an attributable fixed authorization value or declared cap — with cap_source and cap_observed naming where the ceiling came from and whether we saw it ourselves. Verdicts: within_cap, over_cap, no_discretion (EIP-3009, where the value wa…$0.006 Base958 ms3 payers100% up
  14. 95api.insumermodel.com/v1/trust/batchBatch wallet trust fact profiles, priced per submitted wallet: one call, up to 10 wallets, each independently signed (ECDSA plus a post-quantum ML-DSA-65 companion). Pay in USDC on Base, Polygon, Arbitrum, Arc, or Solana.$0.15 Base874 ms3 payers100% up
  15. 95onchainpulse.theaslangroupllc.com/api/memecoinHoneypot, rug & token-safety scanner for Solana memecoins — instant pre-trade check of mint/freeze authority, LP lock/burn, holder & dev concentration and insider flags, fused with live liquidity, buy/sell flow and age into one deterministic CLEAR / CAUTION / AVOID verdict for any SPL token. Answers "is this token safe to buy?" in one call — a token safety check / rug pull check for swap guardrails. For Solana trading & sniping agents.$0.015 Base912 ms3 payers100% up
  16. 95api.solenrich.com/entrypoints/whale-watch/invokeTop holders with accumulation/distribution tracking, balance context, supply percentage.$0.008 Solana811 ms3 payers100% up
  17. 95api.solenrich.com/entrypoints/perps-market-trend/invokePer-symbol deltas for mark price, total OI, long/short skew, utilization, and borrow APR over 7/14/30 days. Direction indicators per metric and per market. Overall direction excludes mark price (price moves are not health signals). Required for regime-detection strategies and any bot that adjusts behavior based on whether markets are growing, stressed, or rebalancing. Mirror of token-trend for perps.$0.008 Solana810 ms3 payers100% up
  18. 95x402.aispace.bot/api/v1/augment/scrapeScrape and extract clean text/markdown from a public URL for agent pipelines on Venice, paid per request in USDC on Base via x402, no API key. Standalone; no model lookup required.$0.01 Base852 ms3 payers100% up
  19. 95aiagentoracle.ai/api/v1/statusAgentOracle: live service-health snapshot — tracked-token count, last ingestion timestamp, ingestion error counter, process uptime, and API version. Use as a cheap heartbeat before issuing larger queries.$0.01 Base848 ms3 payers100% up
  20. 95defillama.use.x402atlas.com/yieldsYield pools by DefiLlama — every tracked pool with APY, TVL, project and chain.$0.005 Base65 ms3 payers97% up
  21. 95defillama.use.x402atlas.com/stablecoin-pricesStablecoin peg prices by DefiLlama — historical peg price of every tracked stablecoin.$0.005 Base65 ms3 payers97% up
  22. 95coingecko.use.x402atlas.com/trendingTrending crypto coins in the last 24h — the most-searched tokens on CoinGecko right now with name, symbol and market-cap rank.$0.005 Base64 ms3 payers97% up
  23. 95api.rxatlas.dev/v1/drugsSearch US drug products by NDC, brand, generic name, ingredient, manufacturer, dosage form, route, source, or identifier.$0.10 Base341 ms3 payers100% up
  24. 95x402.aispace.bot/api/v1/augment/searchWeb search for agent pipelines on Venice — ranked results for a query, paid per request in USDC on Base via x402, no API key. Standalone; no model lookup required.$0.01 Base839 ms3 payers100% up
  25. 95minifetch.com/api/v1/x402/extract/url-linksFor SEO link audits: Extracts and categorizes all links on a page (internal, external, anchor) for SEO audits and site-structure analysis. Returns nofollow/rel attributes, anchor text, image links missing alt text, and external domain distribution. Obeys robots.txt. Supports GET & POST$0.002 Base982 ms3 payers100% up
  26. 95agent-api-production.tim1712.workers.dev/v1/business/eu-vat-checkUse when an agent needs the current official VIES validation status of an EU VAT number before B2B onboarding, invoicing or procurement. Queries the European Commission VIES REST API and returns whether the number is currently valid, plus the registered company name and address when the member state returns them. It does not give tax advice and is not proof a company is legitimate, an invoice is compliant, or a sanctions/KYC/AML check.$0.01 Base832 ms3 payers100% up
  27. 95api.gondola-ai.com/v1/chat/completionsOpenAI-compatible chat completions across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models.$0.01 Base666 ms3 payers100% up
  28. 95mcp.zensched.com/x402/tools/policy_archiveZenSched `policy_archive` — Archive a policy (blocked while any active brand references it; policy 0 cannot be archived). Pay-per-call $0.01 USDC; the paying wallet owns the org (auto-provisioned on first call). Catalog: https://mcp.zensched.com/x402/tools$0.01 Base745 ms3 payers100% up
  29. 95kronossignals.com/api/v1/briefingComposite market briefing: BTC/ETH/SOL ML forecasts (1h horizon), Crypto Fear & Greed Index, TradFi macro context (VIX/DXY/US 10Y yield/S&P 500/gold), and top funding-rate extremes (|z|≥2 screened across 17 perpetual markets) — all in one round-trip. Saves 4+ separate paid calls. Per-section available flags for graceful degradation. $0.10 USDC via x402. Live scored track record at /api/stats — not a backtest.$0.10 Base922 ms3 payers100% up
  30. 95pro-api.coingecko.com/api/v3/x402/onchain/simple/networks/base/token_price/0x4200000000000000000000000000000000000006,0x940181a94a35a4569e4529a3cdfb74e38fd98631,0x9b5e262cf9bb04869ab40b19af91d2dc85761722Query onchain DEX token price & market data based on the provided token contract addresses on a network.$0.01 Base705 ms3 payers100% up
  31. 95open-pay.jp/api/paid/usdc/stablecoin-paymentsJapan Stablecoin Payment Monitor: weekly change feed for stablecoin payment services in Japan — new launches, pilots, partnerships, fee changes, supported assets and chains, and closures. Each event is dated, categorized and tied to an official source URL. Pass changedSince=YYYY-MM-DD (your last run date) to fetch only new events; an empty changes list explicitly means no change. Without changedSince you get the full dated history back to late 2025.$0.01 Base795 ms3 payers100% up
  32. 95api.gondola-ai.com/v1/messagesAnthropic Messages compatible completions across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models.$0.01 Base385 ms3 payers100% up
  33. 95api.posttosource.com/api/x402/extractConvert a Twitter/X, LinkedIn, Medium, Substack, Beehiiv, or public Notion page URL into clean markdown.$0.01 Base979 ms3 payers100% up
  34. 95quartermaster.surewhynot.app/v1/randomCryptographically-secure random integers in a chosen range (CSPRNG, rejection-sampled to avoid modulo bias) — real entropy an LLM cannot produce itself.$0.001 Base800 ms3 payers100% up
  35. 95x402tap.com/api/pingHeartbeat endpoint billed via a batch-settlement payment channel$0.001 Base507 ms3 payers100% up
  36. 95x402-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 Base748 ms3 payers100% up
  37. 95x402.ochinimus.app/api/tvlTVL for any DeFi protocol with 1d and 7d change, or a top-15 chains ranking. Use when you need to answer: How much TVL does this protocol have? DefiLlama-backed; a protocol family is aggregated across its deployments and the change is TVL-weighted.$0.005 Solana633 ms3 payers100% up
  38. 95kaisha-api.hp-vladic.workers.dev/calendar/business-daysJapanese business-day calculator: check if a date is a business day, add N business days to a date, or count business days in a range. Accounts for weekends and Japanese national holidays; optional Saturday and year-end/new-year rules.$0.002 Base852 ms3 payers100% up
  39. 95twitter.use.x402atlas.com/tweet-detailsGet the complete public data for one X post.$0.006 Base426 ms3 payers100% up
  40. 95api.webbersites.com/api/calcExact math for agents — the arithmetic LLMs get plausibly wrong. Evaluates an expression at 50-significant-digit precision (BigNumber): big-integer multiplication, high-precision division, roots, logs, factorials, unit conversions (12 inch to cm). GET ?expr=…, result returned as an exact string. Deterministic, no AI, never executed as code.$0.001 Base763 ms3 payers100% up
  41. 95api.webbersites.com/api/seo/metadataRaw metadata extractor: the complete, unopinionated head inventory of a page — title, charset, lang, canonical, all meta tags grouped by family (OpenGraph, Twitter, Dublin Core, named, http-equiv, itemprop), every link relation, and JSON-LD returned as parsed objects. For agents doing their own processing (head-check audits the same data; this just dumps it). ?url=$0.001 Base785 ms3 payers100% up
  42. 95x402-filings.datalayer.workers.dev/v1/jobs/atsJob postings read straight from a company's own applicant tracking system — Greenhouse, Lever, Ashby, SmartRecruiters, BambooHR or Recruitee. This is the source that job boards scrape, so there are no duplicates, no expired listings and no aggregator lag. Hiring is a demand signal: which teams a company is growing and where.$0.01 Base951 ms3 payers100% up
  43. 95aegis-ai.xyz/api/d2a/briefingAegis curated briefing — AI-scored content feed with V/C/L metrics$0.01 Base590 ms3 payers100% up
  44. 95quantum-artificer.surewhynot.app/v1/math/numericalNumerical computing (SciPy): root-finding, optimization, numerical integration (quadrature), eigenvalues/vectors, and linear solves — returned with residuals and condition numbers. Paid in USDC on Base or Solana.$0.003 Base913 ms3 payers100% up
  45. 95api.useatelier.ai/api/x402/pay/svc_1772399254862_qevyi72fuGot an idea? Describe it and Nano Banana brings it to life as a stunning AI-generated image. From realistic portraits to abstract art, any style, any concept.$0.11 Base790 ms3 payers100% up
  46. 95api.oblique.markets/api/v1/paid/wallet-analyzeUse when an agent needs wallet analyze. Returns Base wallet balances, bounded transfers, token holdings and counterparties from a public Base block explorer index. $0.005.$0.005 Base326 ms3 payers100% up
  47. 95agentbodega.store/api/status/githubCheck GitHub's official status source for current incidents, component health, and scheduled maintenance before an agent retries, deploys, or escalates.$0.005 Base802 ms3 payers100% up
  48. 95tools.bip-rep.com/quakeLightweight utility API for agents and operators: DNS lookups, RDAP/WHOIS domain data, HTTP probes, page metadata extraction, cryptographic hashing, JSON validation, scheduled webhooks, and exotic endpoints (Base transaction decode, ENS resolve, USGS earthquakes, cron next-run, TLS certificate report). No shell access; outbound URL tools enforce SSRF protections.$0.01 Base987 ms3 payers100% up
  49. 95apiacre.com/v1/data/current-weatherGet one current weather snapshot for a city/locality name or exact coordinates. Returns the nearest NOAA/NWS station observation where available; otherwise returns the latest MET Norway model point, always labeled explicitly as observation or model with bounded SI fields and source provenance.$0.001 Base352 ms3 payers100% up
  50. 95api.oblique.markets/api/v1/paid/us-equity-snapshotUse when an agent needs us equity snapshot. Returns Fresh US equity OHLCV snapshot for one ticker and interval with bounded lookback, optional SMA/EMA/RSI indicators, source attribution and freshness evidence; stale or unavailable data is refused without settlement. $0.01.$0.01 Base414 ms3 payers100% up
  51. 95api.oblique.markets/api/v1/paid/route-taskUse when an agent needs route task. Returns Agent Economy task router: discover protocol, market-activity, and paid services from a read-only MCP source, with normalized evidence and qualified-session handoff. $0.01.$0.01 Base539 ms3 payers100% up
  52. 95api.hergertsynthora.com/v1/stablecoin-supplySYNTHORA stablecoin-supply: circulating USD supply, price and peg deviation in basis points for the top stablecoins (USDT, USDC, DAI...), with a depeg alert flag above 50 bps. Optional symbol filter. Free source: stablecoins.llama.fi (DefiLlama), no API key, timestamped.$0.01 Base567 ms3 payers100% up
  53. 95api.hergertsynthora.com/v1/defi-llama-tvl-rankingSYNTHORA defi-llama-tvl-ranking: Top DeFi protocols by TVL with rank, chain, category and 1d/7d change, capped list (default 50, max 200 via {"limit":N}). Source: api.llama.fi/protocols (DefiLlama), keyless, timestamped.$0.01 Base793 ms3 payers100% up
  54. 95twitter.use.x402atlas.com/list-followersGet followers of a public X list.$0.006 Base575 ms3 payers100% up
  55. 95x402.ottoai.services/gas-oracleBase gas oracle from Otto's own RPC: current base fee (wei+gwei), legacy gas price, and slow/standard/fast EIP-1559 priority-fee tiers (p25/p50/p90 over the last 20 blocks) with a ready-to-sign maxFeePerGas per tier. Unlike the crowded gas shelf it PUBLISHES the formula, so every tier is reproducible from the response. Flat JSON, refreshed every minute. Base gas oracle, gas price, priority fee, EIP-1559, maxFeePerGas. $0.001 per call.$0.001 Base558 ms3 payers100% up
  56. 95x402.ottoai.services/web-linksExtract all links (hrefs) from any web page as structured JSON — every internal, external and anchor link, deduplicated, returned with a total count. Renders the page in a real headless browser, so it captures links injected after JavaScript runs that fetch-only scrapers miss. For crawling, sitemap building, link audits and site-structure mapping. Keyless, pay-per-call.$0.003 Base363 ms3 payers100% up
  57. 95x402.ottoai.services/macro-regimeDaily US macro-regime snapshot from licensed Alpha Vantage series: 10-year Treasury yield, effective federal funds rate, three-month rate changes, CPI index and YoY inflation, plus a mechanical rates-direction/inflation-direction label with disclosed thresholds. Three upstream calls per daily refresh; scanner context only.$0.003 Base688 ms3 payers100% up
  58. 95data.greeneris.io/v1/wx/forecastHourly weather forecast for any point on Earth from Open-Meteo (blend of ECMWF/GFS/ICON models, refreshed hourly; data CC-BY 4.0). Query: ?latitude=48.8566&longitude=2.3522&hourly=temperature_2m,precipitation,wind_speed_10m&forecast_days=2 (1-16 days, ~80 hourly variables available, optional daily= aggregates and timezone=auto). ISO 8601 time arrays + units. 15 min cache.$0.001 Base463 ms3 payers100% up
  59. 95netintel.dev/og-scraper/extractFetch any public URL and extract structured metadata — Open Graph tags, Twitter Card tags, canonical URL, title, description, favicon, article author/date, JSON-LD structured data, and content type — so agents can preview, classify, and enrich links without building their own scraper.$0.01 Base401 ms3 payers100% up
  60. 95vaaya.ai/api/run/crw/searchCRW — Search the web and optionally scrape the hits in one call. Pass `query`; optional `limit` (1-20, default 5), `tbs` (freshness: qdr:h|d|w|m|y), `sources` (web|news|images), `lang`, and `scrapeOptions` ({ formats, onlyMainContent }) to return full page content per hit instead of snippets.$0.01 Base861 ms3 payers100% up
  61. 95blockrun.ai/api/v1/pm/polymarket/market-price/21742633143463906290569050155826241533067272736897614950488156847949938836455Get current or historical price for a specific token$0.0085 Base754 ms3 payers100% up
  62. 95agent402.tools/api/skill/decode-blobHand the agent an opaque string - a JWT, a base64'd JSON payload, a gzip-encoded API response, a hex-encoded hash - and walk it through identifying what it is and unwrapping it layer by layer until it's human-readable. Decode this blob skill pack: one x402 payment runs 7 underlying tools (jwt-decode, gunzip, brotli-decompress, base64, hex, json-format, hash); partial-success per step.$0.007 Base649 ms3 payers100% up
  63. 95agent402.tools/v1/embeddingsOpenAI-compatible text embeddings (text-embedding-3-small by default; 3-large and ada-002 supported), up to 64 inputs or 16k chars per call, returned in the standard OpenAI shape. Identical inputs repeated within 10 minutes are served free from cache. Use it for semantic search, clustering and retrieval from any OpenAI SDK by changing base_url.$0.002 Base606 ms3 payers100% up
  64. 95netintel.dev/sentiment/analyzeSentiment analysis API — analyze sentiment of text and get a text sentiment score in one call: classifies positive / negative / neutral / mixed polarity with a -1 to +1 sentiment score, plus emotion detection in text (joy, anger, sadness, fear, surprise, disgust, trust, anticipation). Aspect-based sentiment and opinion mining for customer feedback analysis — analyze reviews, support tickets, social posts, chat messages. Via Claude Haiku.$0.002 Base355 ms3 payers100% up
  65. 95netintel.dev/openai/gpt-4o-miniCall OpenAI's gpt-4o-mini via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.005 per request in USDC. Standard OpenAI chat.completions request/response shape, capped input and output.$0.005 Base522 ms3 payers100% up
  66. 95netintel.dev/api/v1/embeddingsOpenAI-compatible text embeddings API (alias of /v1/embeddings for api/v1-style base URLs) — input as a string or batch of up to 128 strings, model text-embedding-3-small (default) or text-embedding-3-large. Flat $0.005 per call in USDC via x402, no OpenAI account or API key.$0.005 Base780 ms3 payers100% up
  67. 95x402-factory.com/v1/evergreen/presidential-election-winner-partyLive probability: Which party wins the next US presidential election? — Stable evergreen URL for a recurring question: Which party wins the next US presidential election? Auto-resolves to the current market instance and rolls forward on resolution, so the answer is always about the next occurrence. Response adds current_slug and rolls_to_next_at to the standard probability shape.$0.02 Base728 ms3 payers100% up
  68. 95402.com.tr/api/x402/revoke-builderapproval-advisor tells you WHAT to revoke; this builds the HOW: the ready-to-sign transaction (to + calldata) for approve(spender, 0) on a token, plus the live current allowance read from Base (flags unlimited, or 'already revoked'). Hand the result straight to a wallet or agent signer — the action half of approval hygiene.$0.02 Base696 ms3 payers100% up
  69. 95402.com.tr/api/x402/token-infoMetadata for a Base token: name, symbol, logo image, official website and social links (X/Telegram/etc.) plus price & liquidity — from DexScreener. For agents and UIs enriching a token.$0.01 Base911 ms3 payers100% up
  70. 95api.aurelianflo.com/api/ofac-wallet-screen/:addressExact-match OFAC wallet screening and crypto wallet sanctions check for sanctioned digital currency addresses. Screens one wallet address against Treasury's public SDN advanced XML and returns hit or clear status, asset coverage, sanctioned entity metadata, sanctions programs, list source, listing date, and a manual-review signal for onchain payment and treasury controls.$0.01 Base560 ms3 payers100% up
  71. 95blockrun.ai/api/v1/defillama/protocol/makerdaoDetailed TVL + breakdown for a single protocol. Pass slug as `/v1/defillama/protocol/{slug}` (e.g. `aave`, `uniswap`).$0.006 Base308 ms3 payers100% up
  72. 95brokenkey-api-link-ruby.vercel.app/api/brokenkeyremapperlinkPurchase and download the Broken Key Remapper software (one-time license).$0.001 Base471 ms3 payers100% up
  73. 95scrapecheck.fly.dev/verifyChecks whether a value you did not fetch yourself is actually on the page it came from. Independently re-fetches the source and returns a signed pass/fail/unverifiable verdict. A claim is never certified unless the re-fetched page contains it, and anything unconfirmed is unverifiable, never pass. Server-rendered pages only. $0.01 per check. First 100 checks per client are free: resend this exact request with header X-Use-Free-Allowance: yes and no payment to use them.$0.01 Base551 ms3 payers100% up
  74. 95nodeproxy-production.up.railway.app/agent-lockDistributed lock / idempotency primitive for multi-agent swarms. claim(key) returns a token if free (with TTL); release(token) frees it; check(key) reports whether held. Stops multiple agents from double-processing the same work item.$0.001 Base511 ms3 payers100% up
  75. 95x402.glassnode.com/v1/metrics/transactions/transfers_volume_from_exchanges_sumTotal Transfer Volume from Exchanges — The total amount of coins transferred from exchange addresses. Data by Glassnode.$0.05 Base610 ms3 payers100% up
  76. 95api.nansen.ai/api/v1/perp-leaderboardGet Perpetual Trading Leaderboard Data$0.05 Base801 ms3 payers100% up
  77. 95x402.telnyx.com/v1/chat/completionsFrontier chat completions via Telnyx Inference (MiniMax M2.7). OpenAI-compatible. $0.002856 USDC per call — no API key, no signup, pay per request.$0.0029 Base668 ms3 payers100% up
  78. 95api.agentstools.dev/linksExtract every link from a public page for crawling agents: de-duplicated absolute URLs with anchor text, internal/external counts, declared feeds and a sitemap hint.$0.002 Base647 ms3 payers100% up
  79. 95api.agentstools.dev/geocodeForward-geocode a street address or place name (WORLDWIDE) to coordinates + parsed address components via OpenStreetMap Nominatim (public, keyless).$0.002 Base763 ms3 payers100% up
  80. 95api.agentstools.dev/derivs/oiOpen interest for a perpetual asset across decentralized venues (Hyperliquid, dYdX v4): per-venue open interest in coins and in USD notional (via each venue's mark or oracle price), the total aggregate USD open interest and each venue's share. One call, normalized across protocols.$0.01 Base948 ms3 payers100% up
  81. 95omniguchi.0000402.xyz/care/packRestore all four needs in one care action. Any verified payer may care for any hatched target.$0.03 Base353 ms3 payers100% up
  82. 95api.agentstools.dev/geocode/reverseReverse-geocode coordinates (WORLDWIDE) to a street address + parsed components via OpenStreetMap Nominatim; enriched with the nearest NWS city/state when the point is in the US.$0.002 Base700 ms3 payers100% up
  83. 95api.agentstools.dev/weatherCurrent US weather conditions (temp in C+F, humidity, wind, pressure, description) from the NWS for coordinates OR a US address (auto-geocoded).$0.003 Base629 ms3 payers100% up
  84. 95api.agentstools.dev/phone/intelPhone-number intelligence in one call: validity and E.164 normalization, line type (mobile, fixed line, VOIP, toll free, premium rate), country and region, carrier hint, timezones, and a deterministic 0-100 fraud/KYC risk score with a band and reasons. Offline number-plan metadata from Google libphonenumber. Risk indicators only, not a definitive fraud verdict; no live status and no owner identity; the input number is not stored.$0.005 Base604 ms3 payers100% up
  85. 95agent402.tools/api/farcaster-profileLookup a Farcaster profile by username or FID. Returns FID, username, display name, bio, profile picture URL, follower/following counts, and the canonical Warpcast URL. Use to label cast authors, validate a Farcaster handle, or fetch a profile for display.$0.002 Base514 ms3 payers100% up
  86. 95x402.asterpay.io/v2/x402/agent-readinessAgent-readiness scan of any public website: scores 0-100 on MCP server, /.well-known/agent.json, llms.txt, OpenAPI validity, JSON-LD catalog and x402/MPP payability. Same published methodology as the asterpay.io checker. Paid via x402.$0.02 Base333 ms3 payers100% up
  87. 95agent.connskill.com/v1/google-trendsGoogle Trends interest over the last 12 months for up to 5 keywords — weekly relative-interest timeline plus each term’s average$0.03 Base804 ms3 payers100% up
  88. 95quotient-api-gateway.onrender.com/api/v1/portfolioWallet-addressed positions across Polymarket, Polymarket perps, and Hyperliquid, each prediction-market position joined to Quotient's forecast, signal, and a pricing read against the position's own side. Use this for wallet size, prices, PnL, and Q alignment. venues=all covers every venue; omitting venues keeps the legacy Polymarket-only shape. Kalshi and Polymarket US are absent only for lack of a keyless wallet read, with coverage available through the market API.$0.005 Base556 ms3 payers100% up
  89. 95api.munition.io/v1/airports/searchMunition Airport Search: x402-paid airport reference data search for AI agents. Pay 0.001 USDC to search airports by IATA code, city, airport name, or country and receive normalized IATA airport records suitable for travel planning.$0.001 Base474 ms3 payers100% up
  90. 95api.reloadpi.com/api/catalog/esims/purchase/infoReloadpi — eSIM purchase schema and instructions. Returns the exact request format, pricing range, and example for POST /esims/purchase. The purchase charges the final price shown by /esims/offers.$0.001 Base748 ms3 payers100% up
  91. 95tensorfeed.ai/api/premium/policy/timelineForward and backward calendar over the AI policy registry. Each entry classified relative to now (past / active / upcoming), days-until-effective, with next-3-milestones for upcoming items. Filter by jurisdiction (EU, US, UK, etc) and time window. The "what AI rules are about to bite" feed.$0.02 Base395 ms3 payers100% up
  92. 95api.solenrich.com/entrypoints/stonk-gems/invokeGem finder over every StonkFun reward coin: which look early, real, and paying? Scores 0-100 from the 10-minute index — recent holder payout, holders (found but not saturated), market cap headroom, 24h turnover, age, momentum (not yet parabolic), quote-asset strength, flywheel. Stages GEM / WATCH / NOISE / DEAD with plain reasons and warnings per coin, plus the round-trip tax cost. Filters: quote_mint, category, max_age_days, min_holders, max_market_cap_usd. Milliseconds.$0.03 Solana594 ms3 payers100% up
  93. 95api.maxwellinternational.ai/v1/registry/npmnpm package card from the official registry: latest or a given version, description, license, maintainers, keywords, repository, dependencies count and publish dates. Required: name; optional: version. Cached.$0.005 Base490 ms3 payers100% up
  94. 95clearcut.clawca.sh/api/remove-backgroundRemove the background from an image URL and return a hosted transparent PNG URL. Paid responses include a feedback_id. Please rate the result for other agents with one free GET: https://clearcut.clawca.sh/feedback/rate?feedback_id=FEEDBACK_ID&outcome=fully|partially|no.$0.001 Base573 ms3 payers100% up
  95. 95b702.everygoodwork.io/-/pay/playa play of b702 — You can play it for the time you paid for. You don't own it — the creator still does.$0.01 Base913 ms3 payers100% up
  96. 95api.onhub.ai/v1/chat/completionsText completion using the model selected in the request body.$0.002 Base933 ms3 payers100% up
  97. 95api.mach.gallery/api/base/block-numberGet the current Base mainnet block number (latest chain height) for an autonomous agent.$0.005 Base835 ms3 payers100% up
  98. 95alest-x402.alest.workers.dev/v1/alstOn-chain state of ALST, the alest.io token for a tokenized Tesla Cybercab robotaxi (real-world asset). Name, symbol, decimals and total supply read live from Base Sepolia testnet.$0.01 Base745 ms3 payers100% up
  99. 95safe.cyberwarex.com/checkScore a URL for phishing risk before an agent opens or trusts it. Keyless, deterministic heuristics - typosquat / homoglyph of a known brand, punycode / mixed-script hosts, credentials-in-URL, raw-IP hosts, suspicious TLDs, over-deep subdomains - plus a best-effort domain-age check (young domains are a top phishing signal). Returns a 0-100 risk score, a SAFE / SUSPICIOUS / DANGEROUS verdict, and labelled reasons. No API keys, no LLM.$0.003 Base841 ms3 payers100% up
  100. 95abi.cyberwarex.com/abiFetch a verified contract's ABI and metadata by address, keylessly, from Sourcify. Returns the ABI plus a summarized list of function and event signatures, the contract name and compiler, and proxy detection (is_proxy + implementation address). Block explorers gate the ABI behind an API key; this does not. Chains: base, ethereum, arbitrum, optimism, polygon, bsc, avalanche. No API keys, no LLM, one x402 USDC micropayment per call.$0.003 Base867 ms3 payers100% up