# Services from anibalb.duckdns.org on Zero

> anibalb.duckdns.org serves 138 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/anibalb.duckdns.org
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/anibalb.duckdns.org/health.json

## Services

- [PubMed Search API (Synapse)](https://www.zero.xyz/c/pubmed-search-api-synapse-80f08d7a/llms.txt): $0.002/call via x402. Searches PubMed biomedical literature and returns matching article metadata including PMID, title, journal, and publication date.
- [US Treasury Yield Curve](https://www.zero.xyz/c/us-treasury-yield-curve-2c3bcf03/llms.txt): $0.002/call via x402. Fetches the current or historical US Treasury yield curve with rates for multiple maturities (1-month through 30-year)
- [Bitcoin Network Hashrate & Difficulty](https://www.zero.xyz/c/bitcoin-network-hashrate-difficulty-41dc511b/llms.txt): $0.002/call via x402. Returns the current Bitcoin network hashrate (in GH/s), mining difficulty, and latest block metadata via a pay-per-call x402 API
- [Synapse Trending GitHub Repositories](https://www.zero.xyz/c/synapse-trending-github-repositories-35128b7c/llms.txt): $0.002/call via x402. Returns a list of currently trending GitHub repositories with star counts, language, and descriptions
- [Federal Register Search API](https://www.zero.xyz/c/federal-register-search-api-d4c7cf7a/llms.txt): $0.002/call via x402. Search and retrieve U.S. Federal Register documents including rules, notices, and proposed rules, filtered by keyword query
- [Synapse Analyst Ratings](https://www.zero.xyz/c/synapse-analyst-ratings-ab5d1735/llms.txt): $0.002/call via x402. Returns Wall Street analyst ratings, price targets, consensus, and recent rating actions for a given stock symbol
- [Wikipedia Summary Lookup](https://www.zero.xyz/c/wikipedia-summary-lookup-b00719ca/llms.txt): $0.002/call via x402. Fetches a plain-text summary extract and metadata for a given Wikipedia article topic
- [DNSBL IP Reputation Lookup](https://www.zero.xyz/c/dnsbl-ip-reputation-lookup-6441be26/llms.txt): $0.002/call via x402. Checks an IP address against multiple DNS-based blocklists (DNSBLs) to determine its spam/abuse reputation and which blocklists it appears on.
- [IRS Form 990 Nonprofit Search](https://www.zero.xyz/c/irs-form-990-nonprofit-search-97a8b362/llms.txt): $0.002/call via x402. Search the IRS 990 database to find nonprofit organizations by name, returning EIN, location, and NTEE classification code
- [Pwned Password Checker](https://www.zero.xyz/c/pwned-password-checker-3fd85104/llms.txt): $0.002/call via x402. Checks whether a given password has appeared in known data breaches using Have I Been Pwned-style lookup
- [Synapse Technology Detector](https://www.zero.xyz/c/synapse-technology-detector-6645f6a1/llms.txt): $0.002/call via x402. Detects the technology stack of a given website, identifying CMS, CDN, server software, analytics tools, and frameworks in use.
- [HTML Table Extractor](https://www.zero.xyz/c/html-table-extractor-dd28d8e4/llms.txt): $0.002/call via x402. Extracts all HTML tables from a given URL and returns them as structured JSON with headers and rows
- [LEI Lookup](https://www.zero.xyz/c/lei-lookup-29f952db/llms.txt): $0.002/call via x402. Look up Legal Entity Identifiers (LEIs) and associated legal entity details by company name or LEI code
- [VAT Number Validation](https://www.zero.xyz/c/vat-number-validation-bcd7dd34/llms.txt): $0.005/call via x402. Validates a VAT (Value Added Tax) number for a given country and returns the associated business name and validity status
- [Synapse ArXiv Search](https://www.zero.xyz/c/synapse-arxiv-search-3f7ad8cc/llms.txt): $0.002/call via x402. Searches ArXiv academic papers by query keyword and returns matching results including title, authors, summary, and publication date
- [Carbon Intensity API](https://www.zero.xyz/c/carbon-intensity-api-7222793c/llms.txt): $0.002/call via x402. Returns real-time and forecasted carbon intensity of electricity (gCO2/kWh) for the current half-hour period
- [Loan Amortization Calculator](https://www.zero.xyz/c/loan-amortization-calculator-c37667e0/llms.txt): $0.002/call via x402. Computes a full loan amortization schedule including monthly payment, per-period interest and principal breakdown, and total interest paid
- [UK Postcode Lookup](https://www.zero.xyz/c/uk-postcode-lookup-f5ff7296/llms.txt): $0.002/call via x402. Returns geographic and administrative data for a UK postcode, including coordinates, NHS health authority, region, and country.
- [Bitcoin Fee Estimate](https://www.zero.xyz/c/bitcoin-fee-estimate-002e10b2/llms.txt): $0.002/call via x402. Returns current Bitcoin network fee estimates (fastest, half-hour, economy, and minimum) in satoshis per byte
- [Chinese Stock Quote Lookup](https://www.zero.xyz/c/chinese-stock-quote-lookup-927fa3f7/llms.txt): $0.002/call via x402. Fetches real-time price, change, P/E ratio, and market cap for a Chinese A-share stock by ticker code
- [Wallet Portfolio Lookup](https://www.zero.xyz/c/wallet-portfolio-lookup-cf4a9ff4/llms.txt): $0.005/call via x402. Returns token balances and total USD value for a given blockchain wallet address
- [Exa Contents Fetcher (Synapse x402)](https://www.zero.xyz/c/exa-contents-fetcher-synapse-x402-f361020e/llms.txt): $0.002/call via x402. Fetches the full text content and metadata of one or more web pages by URL using the Exa content API, paid per call in USDC via x402.
- [US Geographic FCC Census Block Lookup](https://www.zero.xyz/c/us-geographic-fcc-census-block-lookup-9aabacab/llms.txt): $0.002/call via x402. Looks up US state, county, and FCC census block FIPS codes for a given geographic coordinate or location input
- [BIC/SWIFT Code Validator](https://www.zero.xyz/c/bic-swift-code-validator-2aa41804/llms.txt): $0.001/call via x402. Validates a BIC/SWIFT bank identifier code and returns parsed details including country, location, and branch
- [Bitcoin Volatility Risk Premium (VRP) API](https://www.zero.xyz/c/bitcoin-volatility-risk-premium-vrp-api-0545e8e6/llms.txt): $0.002/call via x402. Returns Bitcoin's current Volatility Risk Premium, implied volatility (dvol), volatility regime classification, and 72-hour realized volatility
- [Steam App Details Lookup](https://www.zero.xyz/c/steam-app-details-lookup-9a42866f/llms.txt): $0.002/call via x402. Fetches detailed metadata for a Steam application by app ID, including name, price, DLC count, and Metacritic score
- [VIN Decode](https://www.zero.xyz/c/vin-decode-bbb51f0b/llms.txt): $0.002/call via x402. Decodes a Vehicle Identification Number (VIN) to return make, model, year, and vehicle type information
- [Synapse Math Solver](https://www.zero.xyz/c/synapse-math-solver-2b894b94/llms.txt): $0.002/call via x402. Evaluates and solves mathematical expressions, including arithmetic, algebra, and functions like square roots and powers, returning a numeric result.
- [Synapse Bankruptcy Filings Search](https://www.zero.xyz/c/synapse-bankruptcy-filings-search-770bece6/llms.txt): $0.002/call via x402. Search SEC EDGAR bankruptcy filings by keyword, returning company names, CIK numbers, form types, and filing dates
- [Synapse Grammar Check](https://www.zero.xyz/c/synapse-grammar-check-81e30ed2/llms.txt): $0.002/call via x402. Checks input text for grammar and spelling errors, returning a corrected version and a list of individual changes made
- [Base Gas Oracle](https://www.zero.xyz/c/base-gas-oracle-a37fcee6/llms.txt): $0.002/call via x402. Returns current gas price estimates for the Base blockchain, including base fee, priority fee, and cost estimates for common operations like native ETH transfers.
- [Synapse Precious Metals Price API](https://www.zero.xyz/c/synapse-precious-metals-price-api-569e66f0/llms.txt): $0.002/call via x402. Returns the current spot price of precious metals (e.g. silver, gold) in USD, paid per call via x402/USDC on Base.
- [Synapse SERP Search](https://www.zero.xyz/c/synapse-serp-search-7c9c6473/llms.txt): $0.002/call via x402. Performs a web search using DuckDuckGo and returns ranked results including URLs, titles, and snippets for a given query.
- [Synapse AI Content Detection](https://www.zero.xyz/c/synapse-ai-content-detection-251bbfb8/llms.txt): $0.002/call via x402. Analyzes text to detect whether it was AI-generated, returning linguistic signals and a probability verdict
- [Public Holidays Lookup API](https://www.zero.xyz/c/public-holidays-lookup-api-f9ca71ab/llms.txt): $0.002/call via x402. Returns the list of public holidays for a given country and year, including holiday names, dates, and types
- [Synapse Electricity Price API](https://www.zero.xyz/c/synapse-electricity-price-api-9f3dbf3c/llms.txt): $0.002/call via x402. Returns the current spot electricity price in EUR/MWh from the German SMARD grid data (Bundesnetzagentur), licensed CC BY 4.0.
- [GitHub Repository Analyzer](https://www.zero.xyz/c/github-repository-analyzer-dacfb992/llms.txt): $0.002/call via x402. Fetches key metadata about a GitHub repository including stars, license, primary language, and full name
- [Startup Domain Check](https://www.zero.xyz/c/startup-domain-check-86e96f0f/llms.txt): $0.002/call via x402. Checks whether a domain name is registered, retrieves its registrar, and returns its expiration date — useful for validating startup or product domain availability and ownership.
- [ERC-20 Token Balance Lookup](https://www.zero.xyz/c/erc-20-token-balance-lookup-cd9cf4c6/llms.txt): $0.003/call via x402. Returns the ERC-20 token balance for a given wallet address on a specified contract, including symbol, decimals, and balance.
- [HTS Tariff Lookup](https://www.zero.xyz/c/hts-tariff-lookup-f342af2d/llms.txt): $0.002/call via x402. Look up US Harmonized Tariff Schedule (HTS) codes to retrieve import duty rates, tariff descriptions, and unit classifications for a given HTS number or product query.
- [Synapse Exchange Rate API](https://www.zero.xyz/c/synapse-exchange-rate-api-e0851913/llms.txt): $0.001/call via x402. Returns the current exchange rate between two currencies (e.g. USD to EUR) via a pay-per-call x402 endpoint.
- [Synapse Content Moderation API](https://www.zero.xyz/c/synapse-content-moderation-api-5db7b613/llms.txt): $0.002/call via x402. Analyzes text content for safety issues including NSFW, spam, toxicity, profanity, and hate speech, returning per-category scores and an overall safety flag
- [Synapse Technical Indicators API](https://www.zero.xyz/c/synapse-technical-indicators-api-35591453/llms.txt): $0.002/call via x402. Returns technical analysis indicators (RSI, EMA, SMA, Bollinger Bands) for a given crypto or equity symbol, paid per call via x402 USDC on Base.
- [US ZIP Code Lookup](https://www.zero.xyz/c/us-zip-code-lookup-a3dd5cc2/llms.txt): $0.002/call via x402. Returns city, state, and geographic coordinates for a given US ZIP code
- [Email Enrichment API](https://www.zero.xyz/c/email-enrichment-api-0fae29da/llms.txt): $0.002/call via x402. Enriches an email address with metadata including provider, disposable status, role detection, and a guessed name — paid per call in USDC via x402.
- [x402 Payment Preflight Checker](https://www.zero.xyz/c/x402-payment-preflight-checker-38ecb8f0/llms.txt): $0.005/call via x402. Checks whether a given HTTP endpoint is properly configured to accept x402 micropayments and returns a diagnostic verdict with payment details
- [Synapse Language Detection API](https://www.zero.xyz/c/synapse-language-detection-api-803a2c67/llms.txt): $0.002/call via x402. Detects the language of a given text input, returning the ISO language code, language name, and confidence level
- [Synapse Economic Indicators API](https://www.zero.xyz/c/synapse-economic-indicators-api-db965b94/llms.txt): $0.002/call via x402. Returns historical and current economic indicator data (e.g. GDP) for a given country, paid per call via x402 on Base in USDC
- [Synapse Earthquake Feed](https://www.zero.xyz/c/synapse-earthquake-feed-ce2b7a59/llms.txt): $0.002/call via x402. Returns recent earthquake events with magnitude, time, and location data
- [Synapse Link Preview](https://www.zero.xyz/c/synapse-link-preview-d97a2aca/llms.txt): $0.002/call via x402. Fetches Open Graph and page title metadata from a given URL for link preview generation
- [Synapse Token Verdict](https://www.zero.xyz/c/synapse-token-verdict-fb88008e/llms.txt): $0.02/call via x402. Returns a risk grade and analysis summary for a given crypto token, including price, liquidity, holder count, and a plain-language take on its safety profile.
- [ERC-721 Token Lookup by Owner](https://www.zero.xyz/c/erc-721-token-lookup-by-owner-3ebd45bc/llms.txt): $0.002/call via x402. Returns all ERC-721 NFT tokens held by a given wallet address on a specified contract, including token IDs and URIs.
- [Synapse Geocoding API](https://www.zero.xyz/c/synapse-geocoding-api-b1e03442/llms.txt): $0.002/call via x402. Converts a place name or address into geographic coordinates (latitude and longitude) along with a structured display name
- [Synapse Radio Search](https://www.zero.xyz/c/synapse-radio-search-317570b5/llms.txt): $0.002/call via x402. Search for internet radio stations by name or keyword, returning stream URLs, station metadata, and vote counts
- [Synapse Options Chain](https://www.zero.xyz/c/synapse-options-chain-e298a02b/llms.txt): $0.002/call via x402. Returns the current options chain (calls and puts with strike prices, mark IV, open interest) for a cryptocurrency like BTC
- [Geo Elevation Lookup](https://www.zero.xyz/c/geo-elevation-lookup-cf2bde98/llms.txt): $0.002/call via x402. Returns the elevation in meters for a given geographic coordinate (latitude/longitude)
- [Synapse Unit Converter](https://www.zero.xyz/c/synapse-unit-converter-deec09d9/llms.txt): $0.002/call via x402. Converts a numeric value from one unit of measurement to another across categories like length, weight, and temperature
- [Synapse Whale Tracking](https://www.zero.xyz/c/synapse-whale-tracking-14b9730a/llms.txt): $0.01/call via x402. Returns whale wallet activity for a token, including large buy/sell counts, net USD positions, and recent large on-chain transfers.
- [CVE Lookup](https://www.zero.xyz/c/cve-lookup-34ff042d/llms.txt): $0.002/call via x402. Looks up CVE vulnerability details by CVE ID or search query, returning severity and CVSS score
- [Synapse Crypto OHLC Candlestick Data](https://www.zero.xyz/c/synapse-crypto-ohlc-candlestick-data-9e2be7b1/llms.txt): $0.002/call via x402. Returns OHLC (open, high, low, close) candlestick data for a cryptocurrency pair, paid per call in USDC via x402 with no API key required.
- [Synapse Email Verification API](https://www.zero.xyz/c/synapse-email-verification-api-2bfa7ed2/llms.txt): $0.002/call via x402. Verifies whether an email address actually exists by performing an SMTP check, returning existence status and server response
- [Synapse Crypto Liquidations Feed](https://www.zero.xyz/c/synapse-crypto-liquidations-feed-f0b835a2/llms.txt): $0.002/call via x402. Returns recent crypto liquidation events including size, price, side, and total liquidated notional value in USD
- [Synapse Wallet Balance Lookup](https://www.zero.xyz/c/synapse-wallet-balance-lookup-933d5111/llms.txt): $0.005/call via x402. Returns the onchain token balance for a given wallet address, optionally filtered by a specific token (e.g. USDC).
- [Synapse Market Risk Index](https://www.zero.xyz/c/synapse-market-risk-index-9779db3c/llms.txt): $0.002/call via x402. Returns a real-time market risk score and stablecoin depeg intelligence, including a risk level, composite score, and stablecoin health statistics across hundreds of assets.
- [Synapse Air Quality API](https://www.zero.xyz/c/synapse-air-quality-api-546c2bd4/llms.txt): $0.002/call via x402. Returns current air quality metrics (PM2.5, PM10, US AQI) for a geographic location, paid per call via x402/USDC with no API key required.
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