# Services from bess-x402.onrender.com on Zero

> bess-x402.onrender.com serves 180 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/bess-x402.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/bess-x402.onrender.com/health.json

## Services

- [App Store & Google Play Reviews](https://www.zero.xyz/c/app-store-google-play-reviews-332052c2/llms.txt): $0.005/call via x402. Fetches user reviews for a mobile app from the Apple App Store or Google Play, including ratings, text, developer replies, and aggregate stats.
- [BESS Arbitrage Calculator](https://www.zero.xyz/c/bess-arbitrage-calculator-cfc373f8/llms.txt): $0.5/call via x402. Computes day-ahead energy arbitrage revenue for a battery storage (BESS) asset in a European bidding zone using a perfect-foresight LP on historical prices, returning annualised revenue per MW, cycle counts, and optional payback period.
- [Crypto Token Prices](https://www.zero.xyz/c/crypto-token-prices-eae90670/llms.txt): $0.003/call via x402. Returns current USD price and 24-hour change for up to 20 crypto tokens per call, identified by symbol, CoinGecko ID, or chain:contract address
- [CVE Details Lookup](https://www.zero.xyz/c/cve-details-lookup-450f5c0b/llms.txt): $0.003/call via x402. Returns full vulnerability details for a CVE ID including CVSS score, severity, vector, CWE, CISA Known Exploited status, affected CPEs, and references from NVD with CVE.org fallback.
- [DEX Pairs & Token Liquidity](https://www.zero.xyz/c/dex-pairs-token-liquidity-419c89d0/llms.txt): $0.003/call via x402. Returns DEX trading pairs for a token symbol, name, or contract address across all chains, sorted by deepest liquidity first, with price, volume, and market data.
- [ENS & Basename Resolver](https://www.zero.xyz/c/ens-basename-resolver-fb94c6e9/llms.txt): $0.003/call via x402. Resolves an ENS name or Basename to its wallet address and profile records, or reverses an address to its primary ENS/Basename.
- [EU Day-Ahead Power Prices](https://www.zero.xyz/c/eu-day-ahead-power-prices-6b1b1895/llms.txt): $0.003/call via x402. Returns day-ahead wholesale electricity prices (15-min or hourly) for a European bidding zone, including daily min/max/mean, negative-price slots, and cheapest/priciest N-hour windows.
- [EVM Wallet Balances](https://www.zero.xyz/c/evm-wallet-balances-3a4da5b1/llms.txt): $0.003/call via x402. Returns native and ERC-20 token balances with USD values for a wallet address or ENS name across Ethereum, Base, Arbitrum, Optimism, and Polygon in a single call.
- [Option Pricer & Greeks (Black-Scholes)](https://www.zero.xyz/c/option-pricer-greeks-black-scholes-5cb37563/llms.txt): $0.003/call via x402. Calculates Black-Scholes price, Greeks (delta, gamma, vega, theta, rho), probability in the money, and breakeven for European call/put options, or solves for implied volatility from a market price.
- [Package Vulnerabilities (OSV)](https://www.zero.xyz/c/package-vulnerabilities-osv-a9748c46/llms.txt): $0.003/call via x402. Returns known security vulnerabilities for an open-source package from OSV, including CVE aliases, severity, and fixed versions, optionally filtered to a specific version.
- [RSS & Atom Feed Reader](https://www.zero.xyz/c/rss-atom-feed-reader-c53f2133/llms.txt): $0.003/call via x402. Fetches any RSS or Atom feed (or a website linking one) and returns clean JSON items with title, link, date, author, summary, categories, and image.
- [Sanctioned Wallet Check](https://www.zero.xyz/c/sanctioned-wallet-check-a1968696/llms.txt): $0.003/call via x402. Checks up to 50 crypto wallet addresses against the OFAC SDN list and returns a PASS or BLOCK verdict with the sanctioned party name and program for each address.
- [Solar Resource & PV Yield](https://www.zero.xyz/c/solar-resource-pv-yield-48ac8589/llms.txt): $0.003/call via x402. Returns long-term monthly solar irradiance, temperature, wind data, and estimated PV system yield/capacity factor for any location on Earth using NASA POWER data (2001–2025).
- [Token Risk Check](https://www.zero.xyz/c/token-risk-check-a20cf44c/llms.txt): $0.004/call via x402. Performs a heuristic rug-pull and honeypot risk analysis of an ERC-20 token contract, returning a 0-100 risk score with detailed flags for dangerous contract features.
- [US Company Fundamentals (SEC)](https://www.zero.xyz/c/us-company-fundamentals-sec-d1eafa58/llms.txt): $0.005/call via x402. Returns reported financial fundamentals (revenue, earnings, cash flow, balance sheet, margins) for a US-listed company from SEC 10-K/10-Q filings, by ticker or CIK, for annual or quarterly periods.
- [US Company SEC Filings](https://www.zero.xyz/c/us-company-sec-filings-1835e86a/llms.txt): $0.003/call via x402. Retrieves the most recent SEC EDGAR filings for a US-listed company by ticker or CIK, filterable by form type, with filing dates and direct document links
- [US Weather Alerts](https://www.zero.xyz/c/us-weather-alerts-b47f9625/llms.txt): $0.003/call via x402. Returns active National Weather Service warnings, watches, and advisories for a US state or geographic point, sorted by severity.
- [Web Page to Markdown](https://www.zero.xyz/c/web-page-to-markdown-c773842e/llms.txt): $0.005/call via x402. Fetches any public web page and returns its main content as clean Markdown with metadata such as title, author, publish date, and language — with ads, menus, and footers stripped out.
- [Contract Inspector](https://www.zero.xyz/c/contract-inspector-4c565aae/llms.txt): $0.003/call via x402. Inspects an EVM address to determine if it's a wallet or contract, its bytecode size, token standard (ERC-20/721/1155), name, symbol, decimals, supply, owner, and proxy implementation.
- [DeFi Yields](https://www.zero.xyz/c/defi-yields-099b53e3/llms.txt): $0.003/call via x402. Returns best DeFi yield opportunities across all chains and protocols, including lending, staking, and liquidity pools with APY, 30-day mean APY, TVL, and risk metadata
- [EU VAT Number Check (VIES)](https://www.zero.xyz/c/eu-vat-number-check-vies-a7c9eee5/llms.txt): $0.003/call via x402. Validates an EU VAT number live against the official EU VIES service and returns validity status plus registered company name and address
- [Prediction Markets Search (Polymarket + Kalshi + Manifold)](https://www.zero.xyz/c/prediction-markets-search-polymarket-kalshi-manifold-c20fc8bf/llms.txt): $0.005/call via x402. Searches Polymarket, Kalshi, and Manifold simultaneously for open markets matching a query, returning current probabilities and odds from each platform side by side.
- [Rust Crate Info](https://www.zero.xyz/c/rust-crate-info-ce2c7935/llms.txt): $0.003/call via x402. Fetches metadata for a Rust crate from crates.io including version, license, downloads, repository, docs, and minimum Rust version.
- [UK Grid Carbon Intensity](https://www.zero.xyz/c/uk-grid-carbon-intensity-aba11039/llms.txt): $0.003/call via x402. Returns real-time and forecast GB electricity carbon intensity (gCO2/kWh) with generation mix and lowest-carbon scheduling slot, nationally or by postcode region.
- [Word Finder by Relation](https://www.zero.xyz/c/word-finder-by-relation-98962982/llms.txt): $0.003/call via x402. Find words related to a given word or pattern by relation type (synonyms, antonyms, rhymes, sounds-like, spelling patterns, etc.) ranked with definitions
- [EVM Account Nonce Lookup](https://www.zero.xyz/c/evm-account-nonce-lookup-e5985398/llms.txt): $0.003/call via x402. Returns the next transaction nonce, pending tx count, native balance, contract flag, and EIP-7702 delegate for an EVM address across major chains.
- [App Store & Google Play Search](https://www.zero.xyz/c/app-store-google-play-search-ecdf8ab2/llms.txt): $0.005/call via x402. Search the Apple App Store or Google Play by keyword and return up to 50 ranked apps with developer info, ratings, installs, price, and update date.
- [BTC & ETH Options Board](https://www.zero.xyz/c/btc-eth-options-board-803bcb16/llms.txt): $0.004/call via x402. Returns Deribit options market data for BTC or ETH: open interest, volume, put/call ratios, max-pain strikes, ATM implied volatility per expiry, and the DVOL index.
- [Crypto Coin Profile](https://www.zero.xyz/c/crypto-coin-profile-e6dc8d8a/llms.txt): $0.003/call via x402. Returns a comprehensive profile for a cryptocurrency by symbol or CoinGecko ID, including description, links, categories, contract addresses, price metrics, market cap, volume, historical changes, and all-time high/low.
- [Crypto News Feed](https://www.zero.xyz/c/crypto-news-feed-202db500/llms.txt): $0.003/call via x402. Fetches the latest cryptocurrency news from CoinDesk, Cointelegraph, Decrypt, and The Block in a single unified feed, filterable by keyword or coin symbol.
- [DeFi Protocol TVL](https://www.zero.xyz/c/defi-protocol-tvl-a13b984b/llms.txt): $0.003/call via x402. Look up DeFi protocols by total value locked (TVL), 1d/7d change, market cap, and chain coverage using DefiLlama data, filterable by chain and category.
- [ERC-20 Transfers](https://www.zero.xyz/c/erc-20-transfers-7f88020b/llms.txt): $0.003/call via x402. Fetches recent ERC-20 Transfer events for a token address, wallet address, or both over the last N blocks (up to 5,000) with sender, receiver, and amount.
- [US Federal Contracts & Grants Search](https://www.zero.xyz/c/us-federal-contracts-grants-search-42e045a8/llms.txt): $0.003/call via x402. Returns the largest US federal contracts, grants, or loans matching a keyword or recipient from USAspending.gov, including award amounts, agencies, dates, and NAICS codes.
- [US Weather Forecast (NWS)](https://www.zero.xyz/c/us-weather-forecast-nws-5602d200/llms.txt): $0.003/call via x402. Returns the official NOAA/NWS 7-day day/night or hourly weather forecast for a US location by latitude and longitude, including temperature, precipitation chance, wind, and text descriptions.
- [World Bank Country Indicators](https://www.zero.xyz/c/world-bank-country-indicators-fbaca2e7/llms.txt): $0.003/call via x402. Fetches World Bank development indicators (GDP, population, inflation, CO2, etc.) for any country or region by year range.
- [Aave Health Factor](https://www.zero.xyz/c/aave-health-factor-68e5b689/llms.txt): $0.003/call via x402. Returns the Aave V3 DeFi position for any wallet: collateral, debt, LTV, liquidation threshold, health factor, and how far collateral can fall before liquidation.
- [AI Agent Readiness Scan](https://www.zero.xyz/c/ai-agent-readiness-scan-228b08de/llms.txt): $0.003/call via x402. Scores a website 0-100 on how prepared it is for AI agent consumption, checking for llms.txt, agent cards, MCP manifests, OpenAPI specs, x402 payments, AI crawler rules, sitemaps, and structured data, with actionable suggestions.
- [Air Quality Index](https://www.zero.xyz/c/air-quality-index-7fa0bacc/llms.txt): $0.002/call via x402. Returns current air quality (US/EU AQI, PM2.5, PM10, ozone, NO2, SO2, CO, dust, UV index) plus hourly forecast for any location by coordinates or place name.
- [App Store & Google Play App Details](https://www.zero.xyz/c/app-store-google-play-app-details-3bd8157a/llms.txt): $0.003/call via x402. Returns detailed metadata for a mobile app on the Apple App Store or Google Play, including title, developer info, ratings, installs, price, genre, and dates.
- [arXiv Paper Search](https://www.zero.xyz/c/arxiv-paper-search-0361e45f/llms.txt): $0.003/call via x402. Search arXiv preprints by keywords or field-specific query syntax, returning title, authors, abstract, categories, dates, and PDF link sorted by relevance or recency.
- [AWS EC2 Prices](https://www.zero.xyz/c/aws-ec2-prices-e0ec7072/llms.txt): $0.003/call via x402. Returns AWS EC2 on-demand hourly and monthly prices for Linux or Windows instances across 21 regions, filtered by instance type, family, vCPUs, and memory.
- [Azure VM Prices](https://www.zero.xyz/c/azure-vm-prices-a840ef54/llms.txt): $0.003/call via x402. Returns Azure retail pricing for a VM SKU across one or all regions, including Linux/Windows pay-as-you-go, spot, and 1/3-year reserved hourly rates, sorted cheapest region first.
- [Bitcoin Address Balance](https://www.zero.xyz/c/bitcoin-address-balance-647b1527/llms.txt): $0.003/call via x402. Returns confirmed and pending balance, total received/sent, transaction count, and the latest 10 transactions for a given Bitcoin address.
- [Bitcoin Fee Estimates](https://www.zero.xyz/c/bitcoin-fee-estimates-57c456fa/llms.txt): $0.003/call via x402. Returns current Bitcoin network fee rates in sat/vB for multiple urgency tiers (next block, 30 min, 1 hour, economy), plus mempool size, block height, and typical payment cost.
- [Bitcoin Transaction Status](https://www.zero.xyz/c/bitcoin-transaction-status-6adb1a6a/llms.txt): $0.003/call via x402. Looks up the status of a Bitcoin transaction by txid, returning confirmation count, block info, fee, fee rate, RBF flag, and inputs/outputs.
- [Blockchain TVL Ranking](https://www.zero.xyz/c/blockchain-tvl-ranking-3b63fbeb/llms.txt): $0.003/call via x402. Returns blockchains ranked by DeFi total value locked (TVL), including market share, gas token, and chain ID for up to 300 chains.
- [Book Search via Open Library](https://www.zero.xyz/c/book-search-via-open-library-796db4f1/llms.txt): $0.003/call via x402. Search for books by title, author, or ISBN and retrieve rich metadata including authors, publication year, editions, page count, ISBNs, subjects, publishers, languages, rating, and cover image.
- [Calldata Decoder](https://www.zero.xyz/c/calldata-decoder-887c02b3/llms.txt): $0.003/call via x402. Decodes raw EVM transaction calldata by resolving the 4-byte function selector and unpacking all arguments into human-readable form.
- [Central Bank Policy Rates](https://www.zero.xyz/c/central-bank-policy-rates-b91d8665/llms.txt): $0.003/call via x402. Returns current policy interest rates for ~40 central banks (Fed, ECB, BoE, BoJ, PBoC, SNB, RBI, etc.) sourced from the BIS, with the date of the latest rate change, sorted highest first, filterable by country or currency code.
- [Clinical Trials Search](https://www.zero.xyz/c/clinical-trials-search-4936d5e3/llms.txt): $0.003/call via x402. Search ClinicalTrials.gov by condition, drug/device, or sponsor to retrieve trial status, phase, enrollment, dates, interventions, and countries.
- [Company LEI Lookup](https://www.zero.xyz/c/company-lei-lookup-1f36cd17/llms.txt): $0.003/call via x402. Look up legal entity information from the GLEIF global LEI register by company name or 20-character LEI code
- [Contract Event Logs](https://www.zero.xyz/c/contract-event-logs-3fc41cd1/llms.txt): $0.003/call via x402. Fetches raw event logs emitted by an EVM smart contract over a block range, filtered by event signature or topic hash
- [Contract Storage Slot Reader](https://www.zero.xyz/c/contract-storage-slot-reader-7b2882bc/llms.txt): $0.003/call via x402. Reads a raw EVM contract storage slot via eth_getStorageAt and returns the value decoded as hex, uint256, and address.
- [Country Facts by Name or ISO Code](https://www.zero.xyz/c/country-facts-by-name-or-iso-code-f7e32427/llms.txt): $0.003/call via x402. Returns comprehensive country facts (official name, capital, region, languages, currencies, calling code, borders, area, TLD, coordinates, UN membership, flag) given a country name or ISO-2/ISO-3 code.
- [Cron Expression Explainer](https://www.zero.xyz/c/cron-expression-explainer-bc255858/llms.txt): $0.003/call via x402. Parses a cron expression into plain English and lists its next scheduled run times at any UTC offset
- [Crypto Exchange Ranking](https://www.zero.xyz/c/crypto-exchange-ranking-28336fe2/llms.txt): $0.003/call via x402. Returns centralized crypto exchanges ranked by trust scor

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