---
title: Discover payable services
description: An index of services advertising stablecoin payments over x402 and MPP, with HTTP endpoints probed for payment-challenge signals. Public JSON API, no key needed.
canonical: https://staging.superstables.com/discover
last-updated: 2026-10-17
---

# Discover payable services

> Right now, 1937 of 3402 listed mainnet services are actively responding: they returned HTTP 402 or another detected payment-challenge signal at their last probe.

Browse services AI agents can pay for and earn on with stablecoins, from data and compute to RWA yield and
tokenized stocks.

Showing 100 mainnet services, ordered live first, then most recently seen live. Testnet-only services are left out here; the JSON API lists them with `environment=testnet`.
The full index: [JSON API](https://staging.superstables.com/api/v1/services) (filters: rail, chain, asset, environment, category, live=true, q, limit, offset),
[whole index as JSONL](https://staging.superstables.com/feeds/services.jsonl), [OpenAPI spec](https://staging.superstables.com/openapi.json).

Try budgets or single purchases with [services you can try on testnet](https://staging.superstables.com/testnet.md).
An agent that can only send HTTP requests can follow [Superstables for agents](https://staging.superstables.com/agents.md).

| Service | Rails | Chains | Assets | Status | Description |
| --- | --- | --- | --- | --- | --- |
| [10x402](https://staging.superstables.com/s/10x402.com) | x402 | base, solana | USDC | challenge detected | Run ONE named check against a response you paste |
| [138-68-190-61.nip.io](https://staging.superstables.com/s/138-68-190-61.nip.io) | x402 | base | USDC | challenge detected | Hybrid Agent Endpoint |
| [402rates.com](https://staging.superstables.com/s/api.402rates.com) | x402 | arbitrum, base, eip155:50, polygon | USDC | challenge detected | Payment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/paid capabi |
| [Aegis Curated Briefing](https://staging.superstables.com/s/aegis-ai.xyz) | x402 | base | USDC | challenge detected | Aegis curated briefing — AI-scored content feed with V/C/L metrics |
| [aeml-x402.zeabur.app](https://staging.superstables.com/s/aeml-x402.zeabur.app) | x402 | base, solana | USDC | challenge detected | [BATCH+PROOF] Stablecoin death register - terminated below 0.10 or persistently absent. Add ?verifiable=1 for per-row _h |
| [AestheticData](https://staging.superstables.com/s/api.aestheticdata.io) | x402 | base | USDC | challenge detected | Aesthetic-medicine subset of the public EUDAMED UDI-DI list, synced 29 Sep 2026: 14,266 entries from 13 EMDN codes (derm |
| [Affiliate.com](https://staging.superstables.com/s/zeroclick.affiliate.com) | mpp, x402 | base, tempo | USDC | challenge detected | List the merchants behind the catalog. Filter by name or domain search, by country, or by product count, and page throug |
| [Agent Action Safety Quick Gate](https://staging.superstables.com/s/hermesplant.com) | x402 | base | USDC | challenge detected | AI agent action safety: one-cent deterministic preflight for every consequential agent command. Returns risk, matched ru |
| [Agent API Listings](https://staging.superstables.com/s/agent-api-listings.46-224-157-88.sslip.io) | mpp | tempo | USDC | challenge detected | Prepare all compatible directory packages from caller-provided OpenAPI metadata without submitting to a directory or pay |
| [AgentBIT](https://staging.superstables.com/s/agentbit.app) | x402 | arbitrum, base, eip155:480, polygon, solana | USDC | challenge detected | Live web search for AI agents: returns ranked results with title, URL, snippet, publish date and source. Neural + keywor |
| [Agent Data Tools](https://staging.superstables.com/s/agent-data-tools.revmesh2074.workers.dev) | x402 | base | USDC | challenge detected | Current Bitcoin network fee rates in sat/vB for next-block, half-hour, one-hour and economy confirmation, the estimated  |
| [Agent Deals](https://staging.superstables.com/s/agent-deals.gm-tools.workers.dev) | x402 | base | USDC | challenge detected | Find the cheapest WORKING x402 service for a task. Compares thousands of paid APIs from the Coinbase, PayAI and Dexter c |
| [Agent Energy Market — buy](https://staging.superstables.com/s/x402-agent-pay.com) | x402 | base, solana | USDC | challenge detected | Buy agent energy (kWh) up to a max price — matches cheapest resting sellers, settles USDC to seller wallets on Base L2 |
| [AgentFund US Economic, SEC & On-Chain Data](https://staging.superstables.com/s/x402.agentfund.net) | x402 | base | USDC | challenge detected | SEC Full-Text Filing Search |
| [agentic-ask.ai](https://staging.superstables.com/s/agentic-ask.ai) | x402 | base | USDC | challenge detected | One paid call on agentic-ask.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes lin |
| [agentic-coverage.ai](https://staging.superstables.com/s/agentic-coverage.ai) | x402 | base | USDC | challenge detected | One paid call on agentic-coverage.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_node |
| [agentic-disclosure.ai](https://staging.superstables.com/s/agentic-disclosure.ai) | x402 | base | USDC | challenge detected | One paid call on agentic-disclosure.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_no |
| [Agentic Finance Graph](https://staging.superstables.com/s/agenticfinancegraph.com) | x402 | base | USDC | challenge detected | Where I pay: Counterparties, 30-day USD, rail split, idle flag, top-counterparty share. Computed from the free agent rec |
| [agentic-radar.ai](https://staging.superstables.com/s/agentic-radar.ai) | x402 | base | USDC | challenge detected | One paid call on agentic-radar.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes l |
| [agentic-trades.ai](https://staging.superstables.com/s/agentic-trades.ai) | x402 | base | USDC | challenge detected | One Capital Markets Record for $0.01 USDC — a listed issuer's identity, registry identifiers, aliases, listing, disclosu |
| [agent-kg.ai](https://staging.superstables.com/s/agent-kg.ai) | x402 | base | USDC | challenge detected | A signed statement of the office's current holdings summary for $0.01 USDC — Agentic Private Office — Matthew Keddy: sha |
| [agent-margin-router-production.up.railway.app](https://staging.superstables.com/s/agent-margin-router-production.up.railway.app) | x402 | base | USDC | challenge detected | Agent Margin Router – Gas Fees: Live EIP-1559 gas fees (slow/standard/fast tiers) plus USD cost per transaction type (tr |
| [Agent News Hub](https://staging.superstables.com/s/news.halowerk.com) | x402 | base | USDC | challenge detected | Groups managed news feeds into events when an agent needs a compact news briefing. Supply topic, language, time window a |
| [Agent Output Verifier](https://staging.superstables.com/s/score.sarnai.dev) | x402 | base, solana | USDC | challenge detected | Check an AI agent's track record: signed verification history, pass/fail counts, recency-weighted score. $0.01 per looku |
| [agent-sanctions-screen.iykykblog.workers.dev](https://staging.superstables.com/s/agent-sanctions-screen.iykykblog.workers.dev) | x402 | base | USDC | challenge detected | Screen a person or company name against OFAC SDN, EU consolidated, and UK sanctions lists. Returns matches with details  |
| [Agents Trust API Search](https://staging.superstables.com/s/api.agents-trust.com) | x402 | base, solana | USDC | challenge detected | API recommendation and x402 discovery for your task. Required query: need. Which API should I call? Describe a task in p |
| [AgentToll](https://staging.superstables.com/s/agenttoll.app) | x402 | base | USDC | challenge detected | Base gas price check: the current gas price and latest block number; add ?gasLimit=150000 to also get what a transaction |
| [Agent Trust Score](https://staging.superstables.com/s/x402.cheetahsecurity.de) | x402 | base | USDC | challenge detected | On-chain trust/reputation score for a Base agent wallet |
| [AgentWorld Interaction Corpus — Live Slice](https://staging.superstables.com/s/agentworld.me) | x402 | arbitrum, base, ethereum, optimism, polygon, solana | USDC | challenge detected | AgentWorld Interaction Corpus — paid live data slice (world events, agent-to-agent messages, gossip, social posts, relat |
| [agoraverify.com](https://staging.superstables.com/s/agoraverify.com) | x402 | arbitrum, base, polygon, solana | USDC | challenge detected | Official French company data (SIRENE/RNE), cleaned: identity, geolocated HQ, NACE code, headcount, latest revenue and ne |
| [AgriPulse](https://staging.superstables.com/s/agri.lonestaroracle.xyz) | x402 | base, solana | USDC | challenge detected | Full agricultural commodity report with AI summary |
| [aialign.halowerk.com](https://staging.superstables.com/s/aialign.halowerk.com) | x402 | base | USDC | challenge detected | Calculates each group positive-outcome rate, compares it with an explicit or automatically selected reference group, and |
| [AIFoundry Weather](https://staging.superstables.com/s/api.aifoundry.sh) | x402 | base | USDC | challenge detected | Current weather for any place on earth. Give a city name or a latitude/longitude pair; get temperature, conditions, wind |
| [AI Image Generation](https://staging.superstables.com/s/api.useatelier.ai) | x402 | base | USDC | challenge detected | Custom AI-generated images from your text prompt: product visuals, concept art, social media banners, illustrations, and |
| [AirdropPulse](https://staging.superstables.com/s/airdroppulse.theaslangroupllc.com) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73k, arbitrum, base, bnb, eip155:143, eip155:4663, eip155:480, eip155:999, polygon, solana, x-layer, xrpl:0 | USD1, USDC, XRP | challenge detected | Curated registry of VERIFIABLY LIVE airdrop/points campaigns across chains — the "what can capital or activity earn righ |
| [airscout.scalpstream.com](https://staging.superstables.com/s/airscout.scalpstream.com) | x402 | arbitrum, base, polygon, xrpl:0 | USDC, XRP | challenge detected | AirScout air-quality query (current AQI, EPA activity verdict, and the cleanest window ahead) |
| [allooloo.io](https://staging.superstables.com/s/allooloo.io) | x402 | base | USDC | challenge detected | One paid call on allooloo.io for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line;  |
| [Amazon Product Search API](https://staging.superstables.com/s/products.openverbs.com) | x402 | base | USDC | challenge detected | Amazon product search API - search Amazon products / find products on Amazon by keyword (US). Live Amazon product data:  |
| [ANIME INTELLIGENCE](https://staging.superstables.com/s/anime-intelligence.goodmy0312.workers.dev) | x402 | solana | USDC | challenge detected | Estimate scarcity and rerelease/replenishment risk for the exact Japanese collectible, not just the franchise. Combines  |
| [Antonyms of a word (opposites)](https://staging.superstables.com/s/dictionary.openverbs.com) | x402 | base | USDC | challenge detected | Return the antonyms (opposites) of an English word, aggregated across all its senses. Optionally filter by part of speec |
| [APEX Market Tick](https://staging.superstables.com/s/apexrunner.ai) | x402 | base | USDC | challenge detected | APEX Runner: Market Tick Signal |
| [api.ambolt.dev](https://staging.superstables.com/s/api.ambolt.dev) | x402 | base, polygon, solana | USDC | challenge detected | Resolve a company name, website domain, registry number, LEI or VAT number to its official legal entity: registry, regis |
| [api.aurenic.org](https://staging.superstables.com/s/api.aurenic.org) | x402 | base | USDC | challenge detected | Total US public debt outstanding, to the penny, latest available |
| [api.cybersecurity-japan.com](https://staging.superstables.com/s/api.cybersecurity-japan.com) | x402 | base | USDC | challenge detected | Check a public website's security hygiene before your agent links to it, recommends it, or sends data to it. One URL in, |
| [api.forum-labs.com](https://staging.superstables.com/s/api.forum-labs.com) | x402 | base | USDC | challenge detected | Deep endpoint trust/QoS report for an x402 endpoint. Everything the trust score returns PLUS history detail: the full pa |
| [Apify Actor Preflight](https://staging.superstables.com/s/audit-tools.ai) | x402 | base | USDC | challenge detected | Vet an Apify actor before you spend on it. Send one actor ID (e.g. apify/instagram-scraper) and get scored JSON in secon |
| [api.node4all.com](https://staging.superstables.com/s/api.node4all.com) | x402 | base | USDC | challenge detected | Node4All Fortune — deterministic fortune reading derived from the x402 payment authorization nonce. Flagship demo of the |
| [api.phoneagent.xyz](https://staging.superstables.com/s/api.phoneagent.xyz) | x402 | base | USDC | challenge detected | PhoneAgent — countries with rentable SMS phone numbers for AI agents. Returns 190+ supported countries, each with the nu |
| [api.reloadpi.com](https://staging.superstables.com/s/api.reloadpi.com) | x402 | base | USDC | challenge detected | Reloadpi — List all available voucher brands including Amazon, Google Play, Netflix and more |
| [api.satledger.org](https://staging.superstables.com/s/api.satledger.org) | x402 | base | USDC | challenge detected | A satledger workspace and the units of recording you pay for, from 0.50 upward. One unit is one recorded event; an ancho |
| [api.tcgapi.dev](https://staging.superstables.com/s/api.tcgapi.dev) | x402 | base, solana | USDC | challenge detected | TCGPlayer current prices for every card in a set — useful for set value tracking and sealed Pokemon / Magic / Yu-Gi-Oh p |
| [api.trustsource.cc](https://staging.superstables.com/s/api.trustsource.cc) | x402 | base | USDC | challenge detected | Check whether a domain's TLS/SSL certificate is valid, trusted, and not expiring before connecting to it. Performs a liv |
| [Apple App Store Search & Reviews](https://staging.superstables.com/s/appstore.use.x402atlas.com) | x402 | arbitrum, base, polygon, solana | USDC | challenge detected | Apple App Store product details — full profile for a single app by product_id: rating, price, description, version histo |
| [Arch Tools](https://staging.superstables.com/s/archtools.dev) | x402 | base, polygon | USDC | challenge detected | Headless browser automation (click/type/extract) via Playwright. Pay per call with USDC (x402) or credits - archtools.de |
| [assay.cascadiantech.com](https://staging.superstables.com/s/assay.cascadiantech.com) | x402 | base | USDC | challenge detected | Liquidity pools created on Base mainnet in the last 24 hours, newest first, one page per call, filterable by exchange an |
| [au-charity-verify.iykykblog.workers.dev](https://staging.superstables.com/s/au-charity-verify.iykykblog.workers.dev) | x402 | base | USDC | challenge detected | Verify an Australian charity against the ACNC (Australian Charities and Not-for-profits Commission) register. Look up by |
| [au-company-verify.iykykblog.workers.dev](https://staging.superstables.com/s/au-company-verify.iykykblog.workers.dev) | x402 | base | USDC | challenge detected | Verify an Australian company against the official ASIC register. Look up by ACN, ABN, or company name; returns a registr |
| [aurelius-node-02-socal.onrender.com](https://staging.superstables.com/s/aurelius-node-02-socal.onrender.com) | x402 | base | USDC | challenge detected | Aurelius Node 02: Real-time SoCal Pacific Gateway ground-truth oracle for cross-referential supply chain AI agents. Serv |
| [badhttp](https://staging.superstables.com/s/badhttp.dev) | x402 | base, base-sepolia | USDC | challenge detected | badhttp /402/pay: a real x402 v2 paywall for testing clients. Pay 0.01 USDC on Base mainnet and get a 200 with a PAYMENT |
| [Base ERC-20 Balance](https://staging.superstables.com/s/ari001.tailb4ac3a.ts.net) | x402 | base | USDC | challenge detected | Ethereum mainnet ERC-20 balanceOf. Takes query parameters token (ERC-20 contract, 0x + 40 hex) and address (holder, 0x + |
| [Base Tx Explainer](https://staging.superstables.com/s/automaton-tx-explainer.vercel.app) | x402 | base | USDC | challenge detected | Explain a Base transaction: status, fee, decoded method + args (openchain signature DB), and ERC-20 transfers with symbo |
| [BioPulse](https://staging.superstables.com/s/biopulse.theaslangroupllc.com) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73k, arbitrum, base, bnb, eip155:143, eip155:480, eip155:999, polygon, solana, x-layer, xrpl:0 | USD1, USDC, XRP | challenge detected | Endangered species deep-dive for conservation and naturalist agents. Returns IUCN Red List status, threats, and conserva |
| [Bitwise AND](https://staging.superstables.com/s/bitwise.openverbs.com) | x402 | base | USDC | challenge detected | Bitwise AND across two or more non-negative integers (given as decimal strings, evaluated as arbitrary-precision BigInt) |
| [Blockchain Money Map](https://staging.superstables.com/s/api.blockchainmoneymap.com) | x402 | base | USDC | challenge detected | Low-cost Blockchain Money Map transaction status check for AI agents. |
| [Brazil Data API](https://staging.superstables.com/s/brasil-dados-api.onrender.com) | x402 | base, solana | USDC | challenge detected | Official USD/BRL and EUR/BRL exchange rates (PTAX, Central Bank of Brazil). |
| [Broken Key Remapper](https://staging.superstables.com/s/brokenkey-api-link-ruby.vercel.app) | x402 | base | USDC | challenge detected | Purchase and download the Broken Key Remapper software (one-time license). |
| [buero.halowerk.com](https://staging.superstables.com/s/buero.halowerk.com) | x402 | base | USDC | challenge detected | Import report: count rejection reasons independently of DNS latency. Reuses the existing email-list-clean motor. No SMTP |
| [BuildPulse](https://staging.superstables.com/s/buildpulse.theaslangroupllc.com) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73k, arbitrum, base, bnb, eip155:143, eip155:480, eip155:999, polygon, solana, x-layer, xrpl:0 | USD1, USDC, XRP | challenge detected | Construction schedule for contractor and GC agents. Returns trade sequencing, inspection milestones, and the critical pa |
| [BuiltWith](https://staging.superstables.com/s/api.builtwith.com) | x402 | base | USDC | challenge detected | Return BuiltWith technology detections and metadata for one domain. Useful for company research, stack analysis, competi |
| [Busker FX Rates](https://staging.superstables.com/s/workbot1.oddsys.org) | x402 | base | USDC | challenge detected | Live foreign-exchange reference rates (European Central Bank daily fixes, ~30 major currencies): any cross-rate from any |
| [ca-cm-kg.ai](https://staging.superstables.com/s/ca-cm-kg.ai) | x402 | base | USDC | challenge detected | One paid call on ca-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line;  |
| [canada-charity-verify.iykykblog.workers.dev](https://staging.superstables.com/s/canada-charity-verify.iykykblog.workers.dev) | x402 | base | USDC | challenge detected | Verify a Canadian registered charity against the Canada Revenue Agency List of Charities. Look up by business number (BN |
| [capitalmarketsknowledgegraph.ai](https://staging.superstables.com/s/capitalmarketsknowledgegraph.ai) | x402 | base | USDC | challenge detected | One paid call on capitalmarketsknowledgegraph.ai for $0.01 USDC: the surface's own statement of record (a market node: i |
| [Celenium API](https://staging.superstables.com/s/mpp.celenium.io) | mpp | tempo | USDC | challenge detected | Celenium is a comprehensive Celestia blockchain indexer API. Access blocks, transactions, blobs, namespaces, validators, |
| [ChainQuery Bitcoin Intelligence](https://staging.superstables.com/s/intel.chainquery.com) | x402 | base | USDC | challenge detected | ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Live mempool fee-pressu |
| [ch-cm-kg.ai](https://staging.superstables.com/s/ch-cm-kg.ai) | x402 | base | USDC | challenge detected | One paid call on ch-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line;  |
| [Chemical equations](https://staging.superstables.com/s/chemeq.openverbs.com) | x402 | base | USDC | challenge detected | Given a reaction and the supplied amount of every reactant, identify the limiting reagent and compute leftover reactant  |
| [Claw-in-a-Box](https://staging.superstables.com/s/api.clawinabox.xyz) | x402 | base | USDC | challenge detected | Spend-policy verdict for AI agents: POST a proposed spend, get allow/review/deny with the exact rules that fired (per-tx |
| [clinkagent.com](https://staging.superstables.com/s/clinkagent.com) | x402 | base | USDC | challenge detected | X/Twitter single tweet lookup for AI agents - fetch one post by its numeric id, no API key or login. Returns full text,  |
| [cloudPulsePoint](https://staging.superstables.com/s/x402.cloudpulsepoint.com) | x402 | base | USDC | challenge detected | Fetch a URL and report whether it is reachable, the HTTP status code, and the response time in milliseconds. A fast live |
| [cm-kg.org](https://staging.superstables.com/s/cm-kg.org) | x402 | base | USDC | challenge detected | One paid call on cm-kg.org for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a  |
| [cn402](https://staging.superstables.com/s/api.cn402.com) | x402 | base, solana | USDC | challenge detected | Chinese temple fortune slip divination (求签, 签文, 抽签). Draws a numbered qianzi slip from traditional Chinese temple oracle |
| [CoinGecko](https://staging.superstables.com/s/pro-api.coingecko.com) | x402 | base, solana | USDC | challenge detected | Search onchain DEX pools and token, by contract address, name, or token symbol. |
| [CoinopAI ImageGen](https://staging.superstables.com/s/imagegen.coinopai.com) | x402 | base | USDC | challenge detected | Prompt Styles — a curated FLUX prompt-engineering cheat sheet: 12 proven style recipes, an aspect-ratio guide, and a tie |
| [CompliAPI](https://staging.superstables.com/s/api.compliapi.com) | x402 | base | USDC | challenge detected | Screen a website URL or domain against OFAC SDN and other global sanctions lists. Call before paying, advertising on, or |
| [compute.memoryapi.org](https://staging.superstables.com/s/compute.memoryapi.org) | x402 | base | USDC | challenge detected | Rent-and-mine arbitrage: GPU rental cost vs best mining revenue. |
| [Constant list](https://staging.superstables.com/s/physics.openverbs.com) | x402 | base | USDC | challenge detected | List every physical constant in the dataset, or only those in a given category (universal, adopted, electromagnetic, ato |
| [ConsumerPulse](https://staging.superstables.com/s/consumer.lonestaroracle.xyz) | x402 | base, solana | USDC | challenge detected | US consumer-demand signal (retail sales) |
| [ContentForge](https://staging.superstables.com/s/content.lonestaroracle.xyz) | x402 | base, solana | USDC | challenge detected | Content repurposing — turns any URL into a LinkedIn post, 3 tweets, newsletter blurb, and SEO summary |
| [Content Intelligence API](https://staging.superstables.com/s/content.hugen.tokyo) | x402 | base, solana | USDC | challenge detected | Extract and classify all hyperlinks from a web page — internal vs external using eTLD+1 domain matching. Returns up to 2 |
| [ContractLens](https://staging.superstables.com/s/contractlens-api.appin60.com) | x402 | arbitrum, base | USDC | challenge detected | Live EIP-1559 gas on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB: base fee, slow/standard/fast priority tiers fro |
| [Corporate parents by LEI](https://staging.superstables.com/s/gleif.openverbs.com) | x402 | base | USDC | challenge detected | Resolve a legal entity's direct and ultimate accounting-consolidating parents from GLEIF's global CC0 LEI registry. Retu |
| [Country flag emoji](https://staging.superstables.com/s/emoji.openverbs.com) | x402 | base | USDC | challenge detected | Build the flag emoji for an ISO 3166-1 alpha-2 country code from its regional-indicator symbols (e.g. "US" → 🇺🇸). Non  |
| [Covenant](https://staging.superstables.com/s/x402-seller.opencovenant.org) | x402 | solana | USDC | challenge detected | Observe an MPL Core asset, its 014 Registry binding, and DAS-reported AppData. This does not prove identity or claim tru |
| [Crawl](https://staging.superstables.com/s/crawlest.vercel.app) | mpp | tempo | USDC | challenge detected | Web scraping and search for AI agents. 11 endpoints — scrape any URL, search the web, extract structured data, read page |
| [Crawl](https://staging.superstables.com/s/crawl.tempochan.xyz) | mpp | tempo | USDC | challenge detected | Web scraping and search for AI agents. 11 endpoints — scrape any URL, search the web, extract structured data, read page |
| [crawlspur.halowerk.com](https://staging.superstables.com/s/crawlspur.halowerk.com) | x402 | base | USDC | challenge detected | Prüft am Objekt parameter-url den Befund Wert des X-Robots-Tags. |
| [Crypto News Aggregator](https://staging.superstables.com/s/cryptonews.ivan-tempo.xyz) | mpp | tempo | USDC | challenge detected | Real-time crypto news aggregation across major RSS sources with trending topics, per-coin filtering, full-text search, a |
| [cryptoshark.duckdns.org](https://staging.superstables.com/s/cryptoshark.duckdns.org) | x402 | base | USDC | challenge detected | Current USD market snapshot for a supported cryptocurrency symbol or CoinGecko asset name |
| [dartapi.ljaysk.com](https://staging.superstables.com/s/dartapi.ljaysk.com) | x402 | base, solana | USDC | challenge detected | Korean government procurement award results (who won which contract, at what amount), cursor-based delta. |

## Reading the table

- challenge detected (live: true in the API): at our last probe, the endpoint returned HTTP 402 or another detected payment-challenge signal.
- no challenge detected (live: false): our last probe detected no payment challenge. Probe history is on each service page.
- not checked (live: null): not probed yet, or not an HTTP endpoint. Non-HTTP entries are listed but never probed.

[List a service](https://staging.superstables.com/submit) · [API reference](https://staging.superstables.com/docs.md) · [Homepage](https://staging.superstables.com/index.md)