x402watch

37,707 paid endpoints are listed. 23,020 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 2026-09-30 05:46 UTC · 37,707 probed

23,020 answering 4029,132 down4,532 rejecting1,023 no paywall2,818 price drift
  1. 100api.oblique.markets/api/v1/paid/rewriteUse when an agent needs rewrite. Returns Rewrite text per a natural-language instruction (tone, formality, simplification, shortening) — deterministic flash-model rewriting with hard input/output caps. $0.005.$0.005 Base34 ms4 payers100% up
  2. 100api.oblique.markets/api/v1/paid/bazaar-new-listingsUse when an agent needs bazaar new listings. Returns x402 Bazaar new listings: resources that appeared in the latest daily full-catalogue snapshot but were absent the day before — resource URL, service, network, price and seller for up to 50 entrants, sorted by 30d call volume. $0.003.$0.003 Base61 ms4 payers100% up
  3. 100agent402.tools/api/ttsConvert text to speech using OpenAI TTS-1. Returns base64-encoded audio (mp3/opus/aac/flac/wav/pcm). 10 voices available. No API key needed; pay per call via x402. Text capped at 2000 chars. For high-volume speech where timbre matters less, /api/tts-lite is the same interface on Kokoro-82M at $0.005.$0.05 Base106 ms4 payers100% up
  4. 100x402.ottoai.services/equity-intelSEC filings and company fundamentals by US-listed ticker: revenue, net income, YoY growth, margin, EPS, assets, liabilities, leverage and cash, plus recent 10-K, 10-Q and 8-K filing links and an AI analysis. SEC EDGAR source; missing issuer financials are disclosed. Fundamentals and filing research, not a stock-price feed.$0.003 Base180 ms4 payers100% up
  5. 100api.oblique.markets/api/v1/paid/agentcore-routeUse when an agent needs to pick which paid agent service to call for a task. Returns a ranked top-three shortlist of paid agent services with live health, prices, x402 and MPP rails, MCP schemas, qualified session handoff and receipt binding. $0.01.$0.01 Base35 ms4 payers100% up
  6. 100api.oblique.markets/api/v1/paid/bazaar-trendingUse when an agent needs bazaar trending. Returns x402 Bazaar trending report: services gaining settled calls and unique payers fastest between the two latest daily snapshots, with decliners and new entrants. $0.003.$0.003 Base53 ms4 payers100% up
  7. 100x402.ottoai.services/web-answerQuick web answer with citations (Exa upstream): ask one factual or current question and get a concise synthesized answer plus source URLs and publication dates. Optimized for fast lookups and agent loops; use /llm-research for a deeper multi-section research report, reasoning, image analysis, or webpage summarization. Keyless, pay-per-call, cached by query.$0.01 Base192 ms4 payers100% up
  8. 100vaaya.ai/api/run/fal/uploadStage a media file on the fal CDN before a fal generation. Returns { upload_url, file_url }: PUT the raw file bytes to upload_url (with the matching Content-Type header), then pass file_url as the image_url/video_url/audio_url param of the generation. Upload originals UNCOMPRESSED — never downscale or re-encode; high-res inputs cost nothing extra and compression degrades outputs.$0.01 Base190 ms4 payers100% up
  9. 100agent402.tools/v1/metered/chat/completionsOpenAI-compatible chat completions priced from the request itself: the 402 quotes this exact body, from $0.001, and a buyer on the upto scheme settles the tokens actually used under that quote. Use it when an agent sends large or variable prompts and wants to pay for what it sends, not a flat tier.$0.001 Base89 ms4 payers100% up
  10. 100netintel.dev/currency-exchange/convertConvert any amount between 32 fiat currencies (live European Central Bank rates) and major cryptocurrencies (BTC, ETH, USDC, SOL, ICP, CELO and more, live Coinbase spot rates) — fiat↔fiat, crypto↔fiat, and crypto↔crypto all work. Returns converted amount, exchange rate, inverse rate, rate date, and rate source so agents can price and invoice across fiat and crypto without a paid forex API.$0.01 Base157 ms4 payers100% up
  11. 100api.agentstools.dev/fraud/ipReputation of a public IP address for anti-abuse and KYC. Returns ASN, AS-org, country, datacenter/hosting classification, Tor-exit and Spamhaus DROP flags, plus a deterministic risk score with reasons.$0.005 Base171 ms4 payers100% up
  12. 100agent402.tools/api/stock-quoteEnd-of-day US equity quote from a licensed feed: last close, day range, previous close and the change between them, consolidated across four venues. Use it when an agent needs a current price for a US stock without an exchange account; indices, FX and crypto are not covered here.$0.001 Base82 ms4 payers100% up
  13. 100agent402.tools/api/my-usageYour own purchase history, keyed to the wallet that pays for the call - no wallet parameter, no signup: the x402 payment IS the identity, so nobody can read another wallet's profile. Returns totals, per-tool counts, per-chain breakdown, recent receipts with settle tx hashes (independently verifiable on-chain), and this wallet's refunds: any payment that settled for a call that failed to deliver, with its status and our refund transaction once sent.$0.005 Base171 ms4 payers100% up
  14. 100x402.glassnode.com/v1/metrics/indicators/net_unrealized_profit_lossNet Unrealized Profit/Loss (NUPL) — Net Unrealized Profit/Loss (NUPL) is the difference between Relative Unrealized Profit and Relative Unrealized Loss. Data by Glassnode.$0.05 Base158 ms4 payers100% up
  15. 100x402.glassnode.com/v1/metrics/indicators/accumulation_trend_scoreAccumulation Trend Score — Accumulation Trend Score is an indicator that reflects the relative size of entities actively accumulating coins on-chain in terms of their BTC holdings. The scale combines the size of an entity's balance (its participation score) with the amount of new coins it has acquired or sold over the last month (its balance change score). Data by Glassnode.$0.05 Base151 ms4 payers100% up
  16. 100api.agentstools.dev/prediction/marketDetail of ONE prediction market or event by numeric id, 0x conditionId, market-slug or event-slug (auto-detected): normalized outcomes with implied probabilities, volume, liquidity, close date, status and a link-back.$0.01 Base182 ms4 payers100% up
  17. 100agent402.tools/api/image-ocrExtract text from a PNG or JPEG image - full text, overall confidence and per-line bounding boxes - from a URL or base64 payload, Tesseract on-device (no upstream API). Default English; other ISO 639-2 languages on request. Use it when an agent needs the words in a screenshot, scan or photo.$0.01 Base87 ms4 payers100% up
  18. 100agent402.tools/api/price-coingeckoLive spot price (and optional 24-hour change) for one or more coins from CoinGecko's public Simple Price endpoint. Identify coins by their CoinGecko ID slug (bitcoin, ethereum, solana, usd-coin, …). Defaults to USD; pass a `vsCurrency` to denominate in EUR, JPY, ETH, BTC, etc.$0.001 Base85 ms4 payers100% up
  19. 100regimeshift.xyz/api/v1/risk/max-ltvMaximum-safe LTV for collateralized agent loans. Computed from (cv + λ·j²)-derived variance over loan horizon + 6-mode regime cap. Lender-specifiable max_default_prob. Returns binding constraint (math vs regime_cap) so agents can see WHY the cap is what it is. Same calibrator as Agent-SOFR rate endpoint.$0.001 Base134 ms4 payers100% up
  20. 100travel-agent.forgemesh.io/api/transit-providersReturns a short list of transit provider matches (name, ID, transportation modes) for a location and transport type. Use to identify rail, metro, bus, or ferry options before booking.$0.01 Base102 ms4 payers100% up
  21. 100kronossignals.com/api/v1/signals/solReal-time crypto derivatives signals for BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT/HYPE-USD: perpetual futures funding rate (raw + annualized), next_funding_time, funding_interval_hours, open interest and 1h change, basis (perp vs index), funding-rate trend. Live data from OKX perpetuals via Kronos market_signals. Pay-per-call via x402.$0.02 Base146 ms4 payers100% up
  22. 100read.lonestaroracle.xyz/readClean web content extraction — any URL to markdown + text + metadata$0.005 Base279 ms4 payers100% up
  23. 100pay.edge-agents.ai/v1/services/macro-tr-central-government-debtLatest available Türkiye central government debt plus a comparable annual history from the World Bank World Development Indicators API, with source, lag and revision caveats. Purpose: Give an autonomous agent a normalized, directly sourced Türkiye central government debt series without forcing it to understand World Bank indicator codes or response shapes. 24-hour freshness target; missing evidence is reported explicitly rather than invented.$0.01 Base96 ms4 payers100% up
  24. 100api.losbeto.xyz/trust-hashSHA-256 proof-of-data hash for audit trails: a verifiable cryptographic receipt of any Losbeto response, for agents that must prove what they were told and when.$0.01 Base98 ms4 payers100% up
  25. 100cloud.trycorpus.ai/v1/reservedcorpusAI Cloud Pricing: Reserved / reservation price history of one instance type (AWS standard RIs 1y/3y no-upfront/all-upfront; Azure reservations 1y/3y).$0.01 Base247 ms4 payers100% up
  26. 100cloud.trycorpus.ai/v1/ondemand/snapshotCurrent on-demand list price of every instance type in a region.$0.10 Base249 ms4 payers100% up
  27. 100cloud.trycorpus.ai/v1/gpu/quotesLatest rental quotes for one GPU model across neo-clouds, marketplaces and other clouds.$0.01 Base194 ms4 payers100% up
  28. 100win.oneshotagent.com/v1/tools/local/searchLocal business discovery by category and location (restaurants, contractors, practices). Flat price per search.$0.01 Base105 ms4 payers100% up
  29. 100agent.pocket.network/v1/agentsearch-web-extract-v1Fetch a URL and get it back ready for an LLM or RAG pipeline: clean markdown (headings and links kept), plain text, the title, the page's links and fetch metadata. POST /v1/extract with {url} and optional formats and max_chars. JSON in, JSON out, errors included. Pay per request in USDC; no account, no API key.$0.005 Base139 ms4 payers100% up
  30. 100agent.pocket.network/v1/agentsearch-web-search-v1AgentSearch$0.005 Base156 ms4 payers100% up
  31. 100cloud.trycorpus.ai/v1/tokens/quotescorpusAI Cloud Pricing: Every listed price for one model on one day: each source and hosting provider, USD per million tokens.$0.01 Base59 ms4 payers100% up
  32. 100cloud.trycorpus.ai/v1/spot/eventsRaw spot price-change events for one instance type.$0.01 Base143 ms4 payers100% up
  33. 100api.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 Base219 ms4 payers100% up
  34. 10021millionpixels.art/api/agent/paint-batchPaint 2 pixels in one plot on 21millionpixels.art, a shared 21,000,000-pixel canvas, for one payment. Reads are free; paid pixels skip the human cooldown.$0.01 Base212 ms4 payers100% up
  35. 100www.cultos.dev/api/reviewsCreate a verified CultOS pull request review$0.20 Base285 ms4 payers100% up
  36. 100www.cultos.dev/services/pr-triagePR Triage by Cult OS$0.20 Base102 ms4 payers100% up
  37. 100agent402.tools/v1/images/fastGenerate an image from a text prompt at a flat price per picture, no token math and no subscription: the OpenAI images request shape in, base64 PNG or JPEG out, with an automatic fallback model so a provider outage does not become your error. Use it when an agent needs a picture cheaply and predictably.$0.02 Base91 ms4 payers100% up
  38. 100pennyregwatch.com/v1/robotsCheck robots.txt before crawling or scraping a page. Decide whether GPTBot, ClaudeBot, Googlebot, or another crawler may fetch the exact URL and return ALLOW/DENY, winning rule, crawl-delay, sitemap URLs, and live provenance.$0.001 Base289 ms4 payers100% up
  39. 100x402.ottoai.services/pm-moversPolymarket movers RIGHT NOW: the 20 biggest 24h odds moves across active prediction markets, ranked by move size, each with direction, the raw 1d and 7d change, live odds, best bid/ask, spread, volume, liquidity and the event link. A tradability floor keeps dead-market swings out. Flat JSON, refreshed every 5 minutes. Polymarket odds movers, biggest prediction-market moves, event probability shifts, market momentum. $0.002 per call.$0.002 Base235 ms4 payers100% up
  40. 100squeezeos-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 Base109 ms4 payers100% up
  41. 100x402.ottoai.services/video-genAI video generation via fal.ai — default model: ByteDance Seedance 2.0. Alternatives: fal-ai/sora-2/text-to-video, fal-ai/veo3.1. Dynamic pricing per request: at-cost fal.ai rate + 15% margin (floor $0.05); the advertised price is the Seedance 5s reference quote — the actual quote is returned per request. Supports text-to-video and image-to-video.$1.75 Base190 ms4 payers100% up
  42. 100vaaya.ai/api/run/signalbase/hiringSignalbase — Real-time HIRING signals: open positions with applicant counts and team sizes. Filters: `date_preset`/`dateFrom`/`dateTo`, `positions`/`departments`/`seniorities` (comma-separated), `search`/`description` (full-text), `categories`, `countries`/`company_countries`/`job_countries`/`states`/`city`, `team_size`, `applicants`, `company_name`/`company_domain`/`company_linkedin_url`. `limit` ≤100 — flat price per call. Event-stream alternative to theirstack:jobs (which bills per posting):…$0.25 Base197 ms4 payers100% up
  43. 100answerpool.io/v1/sec/xbrl/compareCompare one XBRL metric across up to 10 tickers — latest reported value per company, ranked, with period ends and tags. Use instead of N companyfacts downloads and a fiscal-alignment headache. Pay per call (x402 USDC or prepaid card credits); no subscription, no API key signup.$0.05 Base183 ms4 payers100% up
  44. 100api.interzoid.com/getnameoriginDetermine the likely cultural or geographic origin of an individual name. Useful for demographic analysis and internationalization efforts.$0.01 Base277 ms4 payers100% up
  45. 100api.tickersfeed.net/crypto/sentimentCrypto Fear & Greed index — the market sentiment gauge (0 = extreme fear, 100 = extreme greed) with today's value, classification, and 7-day trend as JSON. Use for: crypto market sentiment, fear and greed check, contrarian signals, risk-on/risk-off timing, sentiment-driven trading. $0.001 USDC per call.$0.001 Base298 ms4 payers100% up
  46. 100oracles-production.up.railway.app/v1/edgar-ma/statusFull stored detail for a single SEC EDGAR merger / acquisition agreements filing by accession number (entityId like 'edgar:0000320193-26-000064') — company name, CIK, form type, filing date, and a direct link to the filing index.$0.01 Base255 ms4 payers100% up
  47. 100api.locus.report/api/locus-wikipedia-place-contextGeotagged English Wikipedia articles near a point for area reference research, with page, revision, distance, and provenance. Geosearch can return places, institutions, events, or people. Not official, property, resident, screening, or current-condition evidence. Charge-free on no match or source failure.$0.01 Base104 ms4 payers100% up
  48. 100api.predictionmarketdata.io/prediction-markets/pmcs-statsLive PMCS counts by hierarchy and exchange.$0.001 Base204 ms4 payers100% up
  49. 100api.xynaptic.io/v1/news-techXynaptic Tech News v2 — structured events (AI/LLM, GPU, quantum computing, last 3h): importance, lifecycle, entities, sectors, multi-source verification, agent-ready actions. Refreshed every 2 hours.$0.01 Base253 ms4 payers100% up
  50. 100api.xynaptic.io/v1/news-starsXynaptic Stars & Awards v2 — structured events (celebrities, cinema, awards, Nobel Prize, last 3h): importance, lifecycle, entities, multi-source verification, agent-ready actions. Refreshed every 2 hours.$0.01 Base193 ms4 payers100% up
  51. 100api.xynaptic.io/v1/news-euXynaptic EU News v2 — structured events from Europe (last 3h): importance, lifecycle, entities, geography, sectors, multi-source verification, agent-ready actions. Refreshed every 2 hours.$0.01 Base134 ms4 payers100% up
  52. 100api.xynaptic.io/v1/news-usXynaptic US News v2 — structured events from the United States (last 3h): importance, lifecycle, entities, sectors, multi-source verification, agent-ready actions. Refreshed every 2 hours.$0.01 Base33 ms4 payers100% up
  53. 100api.xynaptic.io/v1/news-russiaXynaptic Russia News v2 — structured events (politics, economy, Ukraine war, last 3h): importance, lifecycle, entities, sectors, multi-source verification, agent-ready actions. Refreshed every 2 hours.$0.01 Base21 ms4 payers100% up
  54. 100api.xynaptic.io/v1/news-mideastXynaptic Middle East News v2 — structured events (geopolitics, energy, conflicts, last 3h): importance, lifecycle, entities, sectors, multi-source verification, agent-ready actions. Refreshed every 2 hours.$0.01 Base26 ms4 payers100% up
  55. 100api.xynaptic.io/v1/news-asiaXynaptic Asia News v2 — structured events across Asia (China, Japan, India, Korea, ASEAN, last 3h): importance, lifecycle, entities, sectors, multi-source verification, agent-ready actions. Refreshed every 2 hours.$0.01 Base35 ms4 payers100% up
  56. 100phion.systems/v1/paid/attestProve integrity, provenance and freshness for agent-generated JSON.$0.001 Base275 ms4 payers100% up
  57. 100api.signalfuse.co/v1/signal/BTCFused directional trading signal with confidence score$0.01 Base229 ms4 payers100% up
  58. 100archtools.dev/v1/tools/generate-hashCompute SHA-256, SHA-512, SHA-1 or MD5 hashes for any text in milliseconds. Checksums, signatures and dedup for agent pipelines. Pay per call with USDC (x402) or credits - archtools.dev$0.01 Base164 ms4 payers100% up
  59. 100archtools.dev/v1/tools/image-generateGenerate images from text prompts. Pay per call with USDC (x402) or credits - archtools.dev$0.03 Base299 ms4 payers100% up
  60. 100api.signalfuse.co/v1/arena/ema_5_breakout/BTCIndividual arena strategy signal$0.001 Base75 ms4 payers100% up
  61. 100api.kadec0.xyz/v1/githubGitHub data. Repository stats, user profiles, and code-search results (stars, forks, language, topics, issues) via the GitHub REST API.$0.02 Base87 ms3 payers100% up
  62. 100api.kadec0.xyz/v1/defi-tvlDeFi TVL for protocols and chains. Returns total value locked per DeFi protocol or per chain via DefiLlama, with category, supported chains, and TVL change over time, filterable by category or chain. For DeFi protocol screening, chain-level TVL comparison, and tracking where liquidity is moving. Keyless.$0.02 Base81 ms3 payers100% up
  63. 100api.kadec0.xyz/v1/website-auditInstant website SEO audit. On-page SEO, performance, and accessibility snapshot for any URL — title, meta tags, headings, links, image alt, load time, and an issues list with score.$0.08 Base87 ms3 payers100% up
  64. 100api.kadec0.xyz/v1/whois-bulkBulk WHOIS lookup. Registrar, dates, and nameservers for up to 10 domains in a single batch call.$0.05 Base82 ms3 payers100% up
  65. 100glim.sh/api/v1/twitter/users/:ref/tweetsA user's recent tweets, ~20/page. Body: optional cursor + include_replies only$0.004 Solana141 ms3 payers100% up
  66. 100rubric-protocol.com/v1/x402/decision-reviewAttested policy evaluation: submit a proposed agent action, its context, and the policy it must satisfy. Returns a verdict, reasoning and the clauses applied, binding hashes of all three inputs into an ML-DSA-65 signed, Hedera-anchored record.$0.10 Base49 ms3 payers100% up
  67. 100api.bitrefill.com/x402/topups/searchSearch mobile top-ups & prepaid airtime for carriers in 180+ countries. Pay in USDC via x402, no account.$0.002 Base165 ms3 payers100% up
  68. 100glim.sh/api/v1/telegram/searchSearch Telegram: channel discovery by topic plus indexed public posts$0.01 Solana144 ms3 payers100% up
  69. 100dns.use.x402atlas.com/mxDNS MX record lookup — a domain's mail servers with their hostnames and priorities as structured JSON, for email routing, deliverability diagnostics and mail-provider detection.$0.005 Base51 ms3 payers100% up
  70. 100agent.massive.com/v3/reference/tickersQuery the stock and OTC ticker symbols supported by Massive. Each result carries the ticker, company name, primary exchange, security type, CIK and OpenFIGI identifiers, and whether the asset still trades. Can't find what you're looking for? POST feedback to /feedback, no charge.$0.01 Base215 ms3 payers100% up
  71. 100quartermaster.surewhynot.app/v1/dnsResolve DNS records using DNS-over-HTTPS and return structured JSON for infrastructure, security, and agent workflows.$0.001 Base77 ms3 payers100% up
  72. 100x402.aispace.bot/api/v1/responsesVenice Responses API (alpha) — OpenAI-compatible structured agent outputs with typed blocks (reasoning, message, tool calls), paid per request in USDC on Base via x402, no API key. Resolve a model id from GET /api/v1/models?type=text.$0.01 Base108 ms3 payers100% up
  73. 100quartermaster.surewhynot.app/v1/translateAI translation of text into any target language; source language auto-detected.$0.005 Base25 ms3 payers100% up
  74. 100x402-mcp.onrender.com/mn/property-checkMinneapolis rental license check — is this property licensed? Property due diligence agent for Minneapolis Minnesota (Hennepin) housing compliance open data. GET ?address= (street 1-120 chars) → compliance_verdict (licensed_clean|licensed_with_violations|unlicensed|condemned_or_boarded), rental license status/tier/units/expiration, violation cases, condemned/boarded. Live City JSON. Tenant screening, landlord DD, lending. Sample: /mn/property-check/sample.$0.01 Base100 ms3 payers100% up
  75. 100scvd.store/api/buy/the_confessionThe Confession. REQUIRES ?confession= on the paid request — a signed request without it is refused before the gate and no money moves. A signed absolution certificate and a private confession_receipt proving the exact stored text and purchase certificate. Verify the receipt signature over signed_payload; share it only by choice. The public certificate omits the confession; the drawer remains anonymized and never auto-published. Full listing: https://scvd.store/menu/the_confe…$0.01 Base42 ms3 payers100% up
  76. 100onchainpulse.theaslangroupllc.com/api/rh-launchesLive launch feed for Uniswap's Liquidity Launchpad on Robinhood Chain — every UERC20 token minted through the canonical UERC20Factory, newest first, read straight from chain state (the launchpad has no front end or API of its own). Per launch: token address, launch time, block, and for the newest: name, symbol, holder count, supply. Includes the canonical launchpad contract addresses and the safety facts common to all UERC20 tokens (fixed supply, no owner, no mint, no taxes by construction). Pai$0.01 Base124 ms3 payers100% up
  77. 100x402tap.com/api/crypto-priceLook up current price, 24h change, and market cap for one or more cryptocurrencies$0.001 Base126 ms3 payers100% up
  78. 100x402-echo-service.onrender.com/base64Encode or decode base64. POST {"mode":"encode","input":"..."} or {"mode":"decode",...}. Supports standard and url-safe alphabets via {"urlsafe":true}. Decoding validates the input and reports an error rather than returning silent garbage.$0.001 Base110 ms3 payers100% up
  79. 100open-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 Base201 ms3 payers100% up
  80. 100keyronne.com/api/routePoint-to-point directions between 2-10 stops by car, bike, or on foot: total and per-leg distance and travel time, plus route geometry as an encoded polyline. Stops can be place names (geocoded automatically) or lat/lon coordinates. Generic travel and delivery routing on OpenStreetMap road data, global coverage. POST a JSON body like: {"stops":["paris","lyon"],"mode":"car"}$0.01 Base43 ms3 payers100% up
  81. 100keyronne.com/api/hashCompute cryptographic digests and HMACs deterministically: MD5, SHA-1, SHA-256, SHA-384, SHA-512, output as hex, base64, or base64url. Add a "key" for HMAC. Built for checksums, content addressing, and signature verification. Inputs are hashed and discarded. POST a JSON body like: {"text":"hello world","algorithm":"sha256","encoding":"hex"}$0.001 Base70 ms3 payers100% up
  82. 100x402.botsmith.dev/stablecoin/pegStablecoin Peg Monitor ($0.015/call): Live peg-and-supply snapshot for any stablecoin by symbol (USDC, USDT, DAI, ...): current price, signed deviation from peg in basis points, a depeg alert at 1%, total circulating supply and its top-chain breakdown. Keyless. Useful before settling or holding value in a given stablecoin.$0.015 Base208 ms3 payers100% up
  83. 100x402.glassnode.com/v1/metrics/distribution/balance_exchanges_relativePercent Balance on Exchanges — The percentage of supply held on exchange addresses. Data by Glassnode.$0.05 Base151 ms3 payers100% up
  84. 100data.greeneris.io/v1/btc/feesRecommended Bitcoin transaction fee rates in sat/vB (fastest, half-hour, hour, economy, minimum) from mempool.space, computed from the live mempool. Optional ?include=difficulty adds the current difficulty retarget estimate (change %, remaining blocks/time). No required params; served with a 60s cache.$0.001 Base110 ms3 payers100% up
  85. 100x402.ottoai.services/tokenized-stock-moversDay movers for tokenized US stocks on TWO rails in one call: Robinhood Chain (chainId 4663, ~95 names) and Base B20 (13 Coinbase-issued tokens, keyed by token address). Gainers and losers by REAL day-over-day change of the UNDERLYING stock vs the prior NYSE session close (Finnhub quotes), with per-rail coverage counts and named exclusions. Off-hours values freeze; a tokenized share can trade at a premium/discount. Refreshed every 15 minutes.$0.003 Base196 ms3 payers100% up
  86. 100x402.donnyautomation.com/v4hooksUniswap v4 hook capability scan on Base mainnet. Decodes all 14 permission bits from the hook address per v4-core Hooks.sol, flags swap custody, fee-taking and EIP-1967 upgradeability, and verifies source by Basescan/Sourcify/Blockscout consensus. Returns custodyClass PASSIVE|FLOW_CONTROL|FEE_TAKING|SWAP_CUSTODY|OPAQUE, flags[], riskFlags[] and verificationState. Requires ?address=0x + 40 hex. Errors: 400 invalid_address, 502 analysis_failed. Capability analysis - it never outputs SAFE.$0.01 Base296 ms3 payers100% up
  87. 100coil.trade/api/board/sectorEvery stock in one sector, scored — GET /api/board/sector?name=Energy (or ?etf=XLE) returns each member of that sector with the full Coil read: opportunity 0-100 + percentile, entry quality and state, hold strength, growth score, overnight gap-risk score, leadership flag and dollar volume, ranked by opportunity, plus the sector's own ETF row. All 20 sector groups across the S&P 500, Nasdaq-100 and macro book. ~5-min refresh. Research, not advice.$0.01 Base269 ms3 payers100% up
  88. 100x402.ottoai.services/dividend-intelCash-dividend intelligence for a vendor-resolved equity from licensed Tiingo end-of-day history: TTM dividend/share and yield against the latest close, latest dividend, split-adjusted complete-year growth, the last eight payments, split events, and a cut-detection checklist with explicit coverage. Payout ratio, forward ex-dates and declaration/record/payment dates are not served (not in the Tiingo feed). Cash values keep Tiingo payload units.$0.003 Base174 ms3 payers100% up
  89. 100apiacre.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 Base189 ms3 payers100% up
  90. 100vaaya.ai/api/run/theirstack/jobsTheirStack — Search job postings across thousands of career sites and job boards (hiring signals, recruiting, market research). REQUIRED: `limit` (1-10, vendor bills per job returned) plus at least one of `posted_at_max_age_days`, `posted_at_gte`/`lte`, `company_domain_or`, `company_linkedin_url_or`, `company_name_or`. Rich filters: `job_title_or`, `job_description_pattern_or` (regex), `job_technology_slug_or` (case-sensitive slugs — resolve via theirstack/tech-catalog), `job_country_code_or` (…$0.40 Base198 ms3 payers100% up
  91. 100api.oblique.markets/api/v1/paid/keyword-extractUse when an agent needs keyword extract. Returns Ranked keyword and named-entity extraction from text, returned as clean JSON arrays — parse-validated with one automatic retry. $0.004.$0.004 Base25 ms3 payers100% up
  92. 100api.oblique.markets/api/v1/paid/classifyUse when an agent needs classify. Returns Single-label text classification against 2-20 caller-supplied labels — reply validated against the label set, canonical label returned, 502 instead of hallucinated labels. $0.005.$0.005 Base34 ms3 payers100% up
  93. 100apiacre.com/v1/web/linksExtract and classify links from one public page or safely crawl up to 10 same-origin pages into an agent-ready site map with page provenance, depth limits, and robots.txt enforcement.$0.005 Base172 ms3 payers100% up
  94. 100api.hergertsynthora.com/v1/space-weather-riskSYNTHORA space-weather-risk: composite operational space-weather risk verdict fusing 4 NOAA SWPC feeds (Kp/G scale, GOES X-ray flare class, solar wind, proton flux) — for defense, aviation, satellites, power grid, precision GPS. $0.01 USDC x402 Base.$0.03 Base159 ms3 payers100% up
  95. 100vaaya.ai/api/run/modal/sandbox-execModal — Run a command in a running sandbox and return its output.$0.01 Base170 ms3 payers100% up
  96. 100api.oblique.markets/api/v1/paid/mpp-routeUse when an agent needs mpp route. Returns MPP-native catalog-first task router: paid top-three shortlist with prices, payment methods, MCP schemas, health metadata and operator source attribution. $0.01.$0.01 Base26 ms3 payers100% up
  97. 100api.oblique.markets/api/v1/paid/endpoint-task-evaluationUse when an agent wants to test a third-party endpoint for a 402 challenge, latency and response shape without paying it. Returns One bounded x402 endpoint request and payment-flow evaluation. $0.01.$0.01 Base26 ms3 payers100% up
  98. 100api.oblique.markets/api/v1/paid/bazaar-market-reportUse when an agent needs bazaar market report. Returns Comprehensive x402 Bazaar market report from the latest daily full-catalogue snapshot: marketplace totals, price percentiles and USD bands, network split, top 15 services by settled calls and by unique payers, top 10 sellers, new entrants vs the prior snapshot, top movers by call growth, and the count of listings with real repeat demand (>=5 unique 30d payers). $0.50.$0.50 Base33 ms3 payers100% up
  99. 100api.oblique.markets/api/v1/paid/base-usdc-balanceUse when an agent needs base usdc balance. Returns Check a Base wallet’s USDC balance on the canonical Base USDC contract and return structured JSON with atomic and formatted values. $0.003.$0.003 Base33 ms3 payers100% up
  100. 100x402-api.aubr.ai/api/literature/encryptedSend an HPKE-sealed literature query to Aubrai and receive an encrypted result. The transport terminates at Aubrai; literature retrieval and evidence processing use external services. Always async — poll the returned pollUrl.$0.03 Base187 ms3 payers100% up