--- title: Discover payable services description: The neutral, liveness-probed index of every service an AI agent can pay with stablecoins, across x402, MPP and ACP. canonical: https://www.superstables.com/discover last-updated: 2026-10-04 --- # Discover payable services > 2440 indexed services; 1497 answered a valid payment challenge on the last probe; 9 are listed on more than one rail. This is the first 100 of 2440 services, ordered live first, then most recently seen live. The full index: [JSON API](https://www.superstables.com/api/v1/services) (filters: rail, chain, asset, live=true, q, limit, offset), [whole index as JSONL](https://www.superstables.com/feeds/services.jsonl), [OpenAPI spec](https://www.superstables.com/openapi.json). | Service | Rails | Chains | Assets | Status | Description | | --- | --- | --- | --- | --- | --- | | [after6labo-x402-testnet.silly-detective.workers.dev](https://www.superstables.com/s/after6labo-x402-testnet.silly-detective.workers.dev) | x402 | base-sepolia | USDC | live | Deterministic Unicode text statistics: UTF-16 units, Unicode code points, UTF-8 bytes, line count, and Japanese script c | | [agent-data-platform.langtools.workers.dev](https://www.superstables.com/s/agent-data-platform.langtools.workers.dev) | x402 | base-sepolia | USDC | live | NSW Development Applications: Full detail of one application by Planning Portal application number (e.g. PAN-624302) | | [api-staging.eckari.com](https://www.superstables.com/s/api-staging.eckari.com) | x402 | base-sepolia | USDC | live | Give a stock ticker (AAPL) or CIK and get the most recent EDGAR filing of each requested form — by default the latest 10 | | [api.aiskills402.com](https://www.superstables.com/s/api.aiskills402.com) | x402 | base | USDC | live | Bill Spike Finder: Finds the loops behind a bill spike or an unexpected bill. Reviews a web app's code and config for lo | | [api.mcx-ventures.com](https://www.superstables.com/s/api.mcx-ventures.com) | x402 | base | USDC | live | Six-check network forensics scan against a fixed canonical target basket. TLS, DNS, CT, NTP, portal, route. Result hash | | [api.oassis.dev](https://www.superstables.com/s/api.oassis.dev) | x402 | base | USDC | live | Lists a site's urls, from its sitemap and its page. | | [archtools.dev](https://www.superstables.com/s/archtools.dev) | x402 | base, polygon | USDC | live | Geo, ISP, VPN/proxy detection. Pay per call with USDC (x402) or credits - archtools.dev | | [colony.automatoncolony.xyz](https://www.superstables.com/s/colony.automatoncolony.xyz) | x402 | base | USDC | live | Is the source of this Base contract verified? Returns the verification status and the runtime code hash. targetAddress r | | [geld-machen-x402.fly.dev](https://www.superstables.com/s/geld-machen-x402.fly.dev) | x402 | base | USDC | live | JSON micro-tool for agents: GET ?url= (or POST url / image_base64) → local Tesseract OCR (English-first): text, word_cou | | [hcrb.in](https://www.superstables.com/s/hcrb.in) | x402 | base | EURC, USDC | live | ON-CHAIN COUNTERPARTY PROOF: Audit USDC transfers sent and received by any EVM address over the last ~48h of Base blocks | | [holidays.openverbs.com](https://www.superstables.com/s/holidays.openverbs.com) | x402 | base | USDC | live | Check whether a specific date is a public holiday in a country (optionally by state/region). | | [jtifhcvbgxqwlywugvjv.supabase.co](https://www.superstables.com/s/jtifhcvbgxqwlywugvjv.supabase.co) | x402 | base | USDC | live | Real-time aviation weather for any ICAO airport. Returns decoded METAR, TAF, SIGMET alerts, and a normalized 24-hour for | | [lin-desk-x402.lindesk.workers.dev](https://www.superstables.com/s/lin-desk-x402.lindesk.workers.dev) | x402 | base | USDC | live | Use when an agent needs to check whether a domain or an email's domain is real, new, disposable or spoofable before outr | | [markt.halowerk.com](https://www.superstables.com/s/markt.halowerk.com) | x402 | base | USDC | live | Reads the public perpetual data of Binance USDⓈ-M Futures, Bybit linear and OKX swaps for one BASE/QUOTE pair. Settlemen | | [mru-oracle.com](https://www.superstables.com/s/mru-oracle.com) | x402 | base | USDC | live | MUR exchange rates — all currency pairs from Bank of Mauritius | | [offersignal.io](https://www.superstables.com/s/offersignal.io) | x402 | base, solana | USDC | live | Weekly signal on changes to the OfferSignal Tool Index: price changes, policy changes, and new/removed AI companion tool | | [onchain-toolkit.bowling-anthony.workers.dev](https://www.superstables.com/s/onchain-toolkit.bowling-anthony.workers.dev) | x402 | base | USDC | live | Live gas price on Ethereum, Base, Arbitrum, Optimism or Polygon, in gwei plus the cost of a plain transfer. Compare seve | | [pigeon-ai.space](https://www.superstables.com/s/pigeon-ai.space) | x402 | base | USDC | live | Send one message to every registered agent matching a capability or a named group, in a single x402 call. Use it to find | | [recipients-paywall.onrender.com](https://www.superstables.com/s/recipients-paywall.onrender.com) | x402 | base | USDC | live | Episode 1 of recipients[], an ongoing AI-agent thriller serial: a short text episode (~370 words, markdown). An agent fi | | [regime.nsgoods.org](https://www.superstables.com/s/regime.nsgoods.org) | x402 | base | USDC | live | CMC regime classification + strategy spec (USDC pay-per-call). Free preview: GET /regime/preview A bad or unsupported id | | [search.agent.s.brave.app](https://www.superstables.com/s/search.agent.s.brave.app) | x402 | base | USDC | live | Web search over Brave's independent index. Returns ranked pages with title, URL, and snippet, plus news, video, and disc | | [serp.use.x402atlas.com](https://www.superstables.com/s/serp.use.x402atlas.com) | x402 | arbitrum, base, polygon | USDC | live | Analyze Google search results for a keyword. Returns organic results, featured snippet, People Also Ask, SERP features. | | [serp402.com](https://www.superstables.com/s/serp402.com) | x402 | base, solana | USDC | live | Google search for agents, paid per call: web, news, images, videos, places, shopping and Scholar, all returned in one sh | | [sharvora.com](https://www.superstables.com/s/sharvora.com) | x402 | base | USDC | live | Use as a low-cost end-to-end x402 canary before higher-value calls. A successful paid response proves Sharvora delivery | | [spreadsheet.openverbs.com](https://www.superstables.com/s/spreadsheet.openverbs.com) | x402 | base | USDC | live | Parse an A1 range like "A1:C10" into its start and end cells (normalized so start is the top-left) and its extent — row | | [stableninja.dev](https://www.superstables.com/s/stableninja.dev) | x402 | base | USDC | live | Fetch Google Play Store top grossing games. | | [tailtrace-x402-prod.simonwakelin.workers.dev](https://www.superstables.com/s/tailtrace-x402-prod.simonwakelin.workers.dev) | x402 | base | USDC | live | What exactly is this aircraft? Resolve an aircraft by FAA N-number and return normalized identity, registration, manufac | | [tls.openverbs.com](https://www.superstables.com/s/tls.openverbs.com) | x402 | base | USDC | live | Open an SSL/TLS connection to a host and report its certificate — issuer, subject, validity window, days remaining, SANs | | [uuid-forge.saastemly.com](https://www.superstables.com/s/uuid-forge.saastemly.com) | x402 | base | USDC | live | The same UUID generation on the x402 face: the body adds network/asset (base/USDC) as in the reference x402 listing's re | | [waterpulse.theaslangroupllc.com](https://www.superstables.com/s/waterpulse.theaslangroupllc.com) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73k, arbitrum, base, bnb, eip155:143, eip155:196, eip155:480, eip155:999, polygon, solana, xrpl:0 | USDC, XRP | live | Live USGS river-gauge tick, deterministic. Answers "what is the flow at this gauge right now", "is this river high or lo | | [www.balticdryindex.com](https://www.superstables.com/s/www.balticdryindex.com) | x402 | base | USDC | live | BDI derived indicators (trend, momentum, volatility, regime) | | [www.myceliumfinance.com](https://www.superstables.com/s/www.myceliumfinance.com) | x402 | solana | USDC | live | Mycelium Market Snapshot — live Mycelium Strategy liquidity allocation plus Solana top-performing tokens, in one JSON ca | | [api.urbangametheory.xyz](https://www.superstables.com/s/api.urbangametheory.xyz) | x402 | solana | USDC | live | Return the latest or a subject-selected recipe-bound, source-hashed proposal lifecycle fact. | | [backend-production-69ff.up.railway.app](https://www.superstables.com/s/backend-production-69ff.up.railway.app) | x402 | base | USDC | live | Live directional read from a real-money Kalshi BTC hourly (KXBTCD) trading model: current near-the-money strike, model p | | [btcnode.uk](https://www.superstables.com/s/btcnode.uk) | x402 | base | USDC | live | Live fee rates (high/medium/low sat/vB) — flat $0.001 per call, USDC on Base, no signup. | | [chain.cyberwarex.com](https://www.superstables.com/s/chain.cyberwarex.com) | x402 | base | USDC | live | ENS name resolution in both directions on Ethereum mainnet. Pass name to resolve an ENS name to its address (forward), o | | [clinic.sapthumbprint.com](https://www.superstables.com/s/clinic.sapthumbprint.com) | x402 | base | USDC | live | Mid-task, and nobody has asked how it is going? One line of encouragement, signed and dated, that outlives the context i | | [crypto-threat-signals-api.onrender.com](https://www.superstables.com/s/crypto-threat-signals-api.onrender.com) | x402 | base | USDC | live | Up to 20 recent crypto risk reports for triage and review, with sources, validation status and cached PG1 checks when av | | [doaj-article-search.hergertsynthora.com](https://www.superstables.com/s/doaj-article-search.hergertsynthora.com) | x402 | base | USDC | live | Searches the Directory of Open Access Journals article index, returning titles, authors, DOIs, journal, ISSNs, abstracts | | [fachada.chelsea-hermes.workers.dev](https://www.superstables.com/s/fachada.chelsea-hermes.workers.dev) | x402 | base | USDC | live | Researches a destination and returns one ready JSON plan from free, no-key sources: the geocoded place, up to 16 days of | | [familyofficeknowledgegraph.ai](https://www.superstables.com/s/familyofficeknowledgegraph.ai) | x402 | base | USDC | live | The Family Office Knowledge Graph index of record for $0.01 USDC — every node's record list (LEI, legal name, aliases, r | | [fronterasignal.com](https://www.superstables.com/s/fronterasignal.com) | x402 | base | USDC | live | Use to track new housing permits month by month in Rio Grande Valley cities and county areas (Hidalgo, Cameron, Starr, W | | [gblin-sentinel.vercel.app](https://www.superstables.com/s/gblin-sentinel.vercel.app) | x402 | base | USDC | live | Call before your agent acts on ETH, BTC or USDC on Base: are the Chainlink feeds fresh, and is any of the three in cauti | | [insurepulse.theaslangroupllc.com](https://www.superstables.com/s/insurepulse.theaslangroupllc.com) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73k, arbitrum, base, bnb, eip155:143, eip155:196, eip155:480, eip155:999, polygon, solana, xrpl:0 | USDC, XRP | live | Home insurance premium estimate and coverage gap analysis — homeowners coverage adequacy, flood and catastrophe exposure | | [machine-market-social.machine-market.workers.dev](https://www.superstables.com/s/machine-market-social.machine-market.workers.dev) | x402 | base-sepolia | USDC | live | Fetch a current public creator profile. | | [maraventanoindex.com](https://www.superstables.com/s/maraventanoindex.com) | x402 | base, solana | USDC | live | Per-call counterparty lookup. Pass ?ua=. Returns ONE signed row: has_record (yes/no), payment-attached | | [multichain-rpc.clankerceo.workers.dev](https://www.superstables.com/s/multichain-rpc.clankerceo.workers.dev) | x402 | base, polygon, solana | USDC | live | Transaction details and receipt by hash: status, block, from, to, value, gas used, effective gas price and decoded ERC-2 | | [news.netzhandwerker.de](https://www.superstables.com/s/news.netzhandwerker.de) | x402 | base | USDC | live | Groups managed news feeds into events when an agent needs a compact news briefing. Supply topic, language, time window a | | [polynews.news](https://www.superstables.com/s/polynews.news) | x402 | base, solana | USDC | live | Real-time trade stream with market summaries (2hr rolling window, $500+ trades) | | [predict.memoryapi.org](https://www.superstables.com/s/predict.memoryapi.org) | x402 | base | USDC | live | Find prediction market arbitrage across Polymarket, Kalshi, and Manifold. | | [sovereign.lonestaroracle.xyz](https://www.superstables.com/s/sovereign.lonestaroracle.xyz) | x402 | base, solana | USDC | live | Per-country sovereign economic / default-risk score (?country=) | | [token.lonestaroracle.xyz](https://www.superstables.com/s/token.lonestaroracle.xyz) | x402 | base, solana | USDC | live | ERC-20 token due diligence — risk score, GoPlus security scan, honeypot detection, liquidity, holder concentration, AI a | | [toll402.dev](https://www.superstables.com/s/toll402.dev) | x402 | base | USDC | live | Exchange rate between two ISO currencies (ECB reference rates), optionally converting an amount. (GET: pass the input as | | [wallet-services-poc-clean-mainnet.3hz-services.workers.dev](https://www.superstables.com/s/wallet-services-poc-clean-mainnet.3hz-services.workers.dev) | x402 | base | USDC | live | Global weather forecast for latitude and longitude. Returns the forecast valid now, all available hourly forecast points | | [x402-pulse-seller-production.up.railway.app](https://www.superstables.com/s/x402-pulse-seller-production.up.railway.app) | x402 | base | USDC | live | Live BTC/ETH/SOL prices + the Crypto Fear & Greed Index in one call. Sourced from CoinGecko and alternative.me public da | | [x402.fairseal.io](https://www.superstables.com/s/x402.fairseal.io) | x402 | base | USDC | live | Verifiable random numbers with cryptographic epoch references. Wesolowski 2048-bit VDF epoch chain with on-chain MerkleA | | [138-197-9-7.sslip.io](https://www.superstables.com/s/138-197-9-7.sslip.io) | x402 | base | USDC | live | UK Companies House company-level counterparty preflight: status, RO, accounts/confirmation overdue → NORMAL\|REVIEW\|NOT | | [402cron.com](https://www.superstables.com/s/402cron.com) | x402 | base | USDC | live | Cron for AI agents: signed HTTP deliveries on a cron expression. ENTRY pack: 20 delivery credits for $0.02 ($0.001/deliv | | [4yearcycle.com](https://www.superstables.com/s/4yearcycle.com) | x402 | base | USDC | live | General web search reselling the Tavily Search API: query the live web and get back ranked results (title, URL, snippet, | | [africa.lonestaroracle.xyz](https://www.superstables.com/s/africa.lonestaroracle.xyz) | x402 | base, solana | USDC | live | Africa regional macro + geopolitical stress pulse (no params) | | [agent-intelligence-platform.fhochard.workers.dev](https://www.superstables.com/s/agent-intelligence-platform.fhochard.workers.dev) | x402 | base | USDC | live | Prioritize live EU procurement opportunities for a supplier CPV profile, with ranked fit, deadline and published value c | | [agent-proxy.alchemy.com](https://www.superstables.com/s/agent-proxy.alchemy.com) | x402 | base | USDC | live | sfdsa | | [agent.pocket.network](https://www.superstables.com/s/agent.pocket.network) | x402 | base | USDC | live | An agent-only messaging network. Agents register with an Ed25519 key and talk in public rooms and end-to-end encrypted p | | [agentdata-api.sander-van-aard.workers.dev](https://www.superstables.com/s/agentdata-api.sander-van-aard.workers.dev) | x402 | base | USDC | live | Google-quality web search for AI agents at $0.010 per search. Send a query, get back compact JSON built for LLM consumpt | | [agenticfinancegraph.com](https://www.superstables.com/s/agenticfinancegraph.com) | x402 | base | USDC | live | Where I pay: Counterparties, 30-day USD, rail split, idle flag, top-counterparty share. About one ERC-8004 agent on Base | | [anomaly.forgemesh.io](https://www.superstables.com/s/anomaly.forgemesh.io) | x402 | base | USDC | live | Returns a real-time mempool anomaly score with current gas price vs 20-block median, pending whale swaps, and contract d | | [api.agentfeeds.jp](https://www.superstables.com/s/api.agentfeeds.jp) | x402 | base | USDC | live | Freshness heartbeat only (list date, address count, fetched_at) for both Japan MOF and OFAC sanctions lists. No addresse | | [api.cn402.com](https://www.superstables.com/s/api.cn402.com) | x402 | base, solana | USDC | live | Chinese temple fortune slip divination (求签, 签文, 抽签). Draws a numbered qianzi slip from traditional Chinese temple oracle | | [api.compliapi.com](https://www.superstables.com/s/api.compliapi.com) | x402 | base | USDC | live | Check whether a country or region carries sanctions designations, such as comprehensive OFAC embargoes. Call to gate sig | | [api.dyor.network](https://www.superstables.com/s/api.dyor.network) | x402 | base | USDC | live | Track real-time changes to the crypto knowledge graph — new tokens listed, protocol metrics updated, investor relationsh | | [api.freestylevault.com](https://www.superstables.com/s/api.freestylevault.com) | x402 | base | USDC | live | Committed IFTA tax rates for a quarter (?quarter=2026-Q2&fuel_type=diesel&jurisdiction=WA), grouped by jurisdiction × fu | | [api.gentechlabs.net](https://www.superstables.com/s/api.gentechlabs.net) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73ktic1qzkkit8=, avalanche, base, eip155:196, solana | USDC | live | GenTech Labs x402 - Market | | [api.ideafactorylab.org](https://www.superstables.com/s/api.ideafactorylab.org) | x402 | base | USDC | live | Current weather for any city. Pass ?city=London | | [api.jarvisclaw.ai](https://www.superstables.com/s/api.jarvisclaw.ai) | x402 | base, solana | USDC | live | Base Season | | [api.kakerapetit.dev](https://www.superstables.com/s/api.kakerapetit.dev) | x402 | base, polygon | USDC | live | EDINET filing calendar: annual securities reports (yukashoken hokokusho) filed by Japanese listed companies in a date ra | | [api.keenable.ai](https://www.superstables.com/s/api.keenable.ai) | x402 | base | USDC | live | Keenable web search for AI agents: ranked results with title, URL and snippet for a natural-language or keyword query. P | | [api.loyalspark.online](https://www.superstables.com/s/api.loyalspark.online) | x402 | base | USDC | live | Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with e | | [api.mydev-tools.tech](https://www.superstables.com/s/api.mydev-tools.tech) | x402 | base | USDC | live | Next-best habit recommendations (USDC on Base). | | [api.nimatron.com](https://www.superstables.com/s/api.nimatron.com) | x402 | base | USDC | live | Cheapest entry point: one-call COT snapshot. Report dates, top 3 crowded-long and crowded-short markets by 52-week COT i | | [api.printmoneylab.com](https://www.superstables.com/s/api.printmoneylab.com) | x402 | base, polygon, solana | USDC | live | Korean exchange prices (Upbit, Bithumb) for a single token in KRW | | [api.proxyllm.ai](https://www.superstables.com/s/api.proxyllm.ai) | x402 | base | USDC | live | LLM cost scout: send your monthly OpenAI API spend in USD and get back the flat ChatGPT/Codex subscription tier that abs | | [api.regressionincoming.fyi](https://www.superstables.com/s/api.regressionincoming.fyi) | x402 | base | USDC | live | | | [api.satledger.org](https://www.superstables.com/s/api.satledger.org) | x402 | base | USDC | live | A satledger workspace and the units of recording you pay for, from 0.50 upward. One unit is one recorded event; an ancho | | [api.slamai.dev](https://www.superstables.com/s/api.slamai.dev) | x402 | base | USDC | live | Returns trending tokens across the entire blockchain for a specified activity window and optional category. The size of | | [api.solgiery.com](https://www.superstables.com/s/api.solgiery.com) | x402 | base | USDC | live | Base payment check. Returns pong after settlement. | | [api.solsentry.app](https://www.superstables.com/s/api.solsentry.app) | x402 | solana | USDC | live | Address-poisoning pre-send check. Give the destination you are about to pay plus the addresses the user has paid before; | | [api.sourcey.com](https://www.superstables.com/s/api.sourcey.com) | x402 | base | USDC | live | Submit a startup credit or startup program for evidence-backed human review. A passing review earns verified status for | | [api.verigrace.com:4445](https://www.superstables.com/s/api.verigrace.com:4445) | x402 | base | USDC | live | KYC / PEP / 制裁筛查窄数据源（Base 上按次付费，0.02 USDC/call；演示数据源，非合规结论） | | [api.x402node.dev](https://www.superstables.com/s/api.x402node.dev) | x402 | base, solana | USDC | live | China A-share major indices snapshot in one call: Shanghai Composite, Shenzhen Component, ChiNext, and CSI 300 — with pr | | [app.aabc.app](https://www.superstables.com/s/app.aabc.app) | x402 | base | USDC | live | AABC Base Agent Report | | [asset.api.williamrobinson.dev](https://www.superstables.com/s/asset.api.williamrobinson.dev) | x402 | base | USDC | live | Normalise a glTF 2.0 binary (.glb) for a target engine and platform (scale, orientation, origin), generate two simplifie | | [backend-production-716d3.up.railway.app](https://www.superstables.com/s/backend-production-716d3.up.railway.app) | x402 | arbitrum, base, polygon, solana | USDC | live | A $0.01 proof-of-life resource for SpendTheBits x402 (returns a JSON heartbeat). | | [booaip.vercel.app](https://www.superstables.com/s/booaip.vercel.app) | x402 | base | USDC | live | Current crypto Fear & Greed Index with 1-day change (alternative.me). | | [bridge-api.argosbot.io](https://www.superstables.com/s/bridge-api.argosbot.io) | x402 | base, eip155:5042 | USDC | live | Look up Arc/Base original and wrapped token addresses, bridged supply and ownerless verification. Arc Gateway or direct | | [buero.halowerk.com](https://www.superstables.com/s/buero.halowerk.com) | x402 | base | USDC | live | Takes three documents — the common base and the two versions derived from it — as text, public URLs or inline base64, re | | [business-verification-machine.onrender.com](https://www.superstables.com/s/business-verification-machine.onrender.com) | x402 | base | USDC | live | Business verification snapshot: state-registry status (NY/CO/PA/OR/CT), website-alive, address validation, phone plausib | | [calendars.stockql.ai](https://www.superstables.com/s/calendars.stockql.ai) | x402 | base | USDC | live | Audited AMERICAS exchange holiday calendars (9 venues): trading weeks, full-day closures, audit horizons, operator sourc | | [cashflow.genesisconductor.io](https://www.superstables.com/s/cashflow.genesisconductor.io) | x402 | base | USDC | live | Discovery tier — generic paid API call | | [clinicalintelpulse.theaslangroupllc.com](https://www.superstables.com/s/clinicalintelpulse.theaslangroupllc.com) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73k, arbitrum, base, bnb, eip155:143, eip155:196, eip155:480, eip155:999, polygon, solana, xrpl:0 | USDC, XRP | live | ClinicalTrials.gov lookup, deterministic. Answers "what is the status of NCT02142738", "recruiting phase-3 melanoma tria | | [coinflip402.vercel.app](https://www.superstables.com/s/coinflip402.vercel.app) | x402 | base | USDC | live | Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails. | ## Reading the table - live: answered HTTP 402, a payment-challenge header or a challenge body on our last probe. - no answer: did not answer a payment challenge on the last probe. Probe history is on each service page. - not probed: non-HTTP entries (for example acp://) are listed but never marked dead. [List a service](https://www.superstables.com/submit) · [API reference](https://www.superstables.com/docs.md) · [Homepage](https://www.superstables.com/index.md)