# Services from 206-81-14-131.sslip.io on Zero

> 206-81-14-131.sslip.io serves 44 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/206-81-14-131.sslip.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/206-81-14-131.sslip.io/health.json

## Services

- [Northline Sun Events API](https://www.zero.xyz/c/northline-sun-events-api-65fa856c/llms.txt): $0.01/call via x402. Returns sunrise, sunset, and related solar event times for a given location and date
- [Northline Content Quality Audit](https://www.zero.xyz/c/northline-content-quality-audit-c5a75003/llms.txt): $0.01/call via x402. Analyzes text content for readability, structure, word count, and writing quality, returning grade-level scores and actionable improvement suggestions.
- [Northline NPM Package Risk Analyzer](https://www.zero.xyz/c/northline-npm-package-risk-analyzer-f32a95a5/llms.txt): $0.015/call via x402. Assesses the security and supply-chain risk level of an npm package by name
- [Northline NWS Forecast](https://www.zero.xyz/c/northline-nws-forecast-f90588fb/llms.txt): $0.005/call via x402. Returns an NWS (National Weather Service) weather forecast for a given location, delivered as a paid API call via x402 micropayment.
- [Northline Bitcoin Address Validator](https://www.zero.xyz/c/northline-bitcoin-address-validator-2bbcc804/llms.txt): $0.008/call via x402. Validates whether a given Bitcoin address is correctly formatted and legitimate
- [Northline Agent Eval Case Design Playbook](https://www.zero.xyz/c/northline-agent-eval-case-design-playbook-a538aee1/llms.txt): $0.25/call via x402. Downloads a Markdown guide on designing evaluation cases for AI agents, covering methodology and best practices
- [Northline DNS Records Lookup](https://www.zero.xyz/c/northline-dns-records-lookup-a92b1bf3/llms.txt): $0.005/call via x402. Looks up DNS records for a given domain name, returning resolved record data
- [Northline GitHub PR Insights](https://www.zero.xyz/c/northline-github-pr-insights-5c50b7e4/llms.txt): $0.005/call via x402. Fetches analytics and insights for a specific GitHub pull request, paid per-call via x402 micropayment
- [Northline Timezone Convert](https://www.zero.xyz/c/northline-timezone-convert-790ae689/llms.txt): $0.01/call via x402. Converts a datetime from one timezone to another, returning the equivalent local time in the target timezone
- [Northline Country-Currency-Timezone Reference](https://www.zero.xyz/c/northline-country-currency-timezone-reference-81b364d7/llms.txt): $0.25/call via x402. Downloads a comprehensive Markdown reference document mapping countries to their currencies and timezones
- [Northline Treasury Yields Rates](https://www.zero.xyz/c/northline-treasury-yields-rates-7bd6bae2/llms.txt): $0.005/call via x402. Returns current US Treasury yield rates across maturities, payable per-call via x402 USDC micropayment with no account required.
- [Northline DOI Open Access Lookup](https://www.zero.xyz/c/northline-doi-open-access-lookup-9bae93cc/llms.txt): $0.008/call via x402. Looks up open-access availability and metadata for a scholarly article given its DOI
- [Northline GitHub Repo Insights](https://www.zero.xyz/c/northline-github-repo-insights-870ffaaa/llms.txt): $0.005/call via x402. Returns analytics and insights for a given GitHub repository, including stats, activity, and metadata
- [Base Network Cheat Sheet Download](https://www.zero.xyz/c/base-network-cheat-sheet-download-69a1ea9c/llms.txt): $0.25/call via x402. Downloads a Markdown cheat sheet reference document covering the Base blockchain network, paid via x402 micropayment
- [Northline Secret Scan](https://www.zero.xyz/c/northline-secret-scan-848509cb/llms.txt): $0.01/call via x402. Scans text or code for exposed secrets, API keys, credentials, or sensitive tokens
- [Northline Agent Input Safety Checklist](https://www.zero.xyz/c/northline-agent-input-safety-checklist-46a66950/llms.txt): $0.25/call via x402. Downloads a Markdown-formatted safety checklist for validating and sanitizing agent inputs before processing
- [Northline Currency Rates](https://www.zero.xyz/c/northline-currency-rates-31330552/llms.txt): $0.005/call via x402. Returns the current exchange rate between two currencies via a pay-per-call API using x402 micropayments
- [Northline Crypto Price Lookup](https://www.zero.xyz/c/northline-crypto-price-lookup-28cfd8b5/llms.txt): $0.003/call via x402. Returns the current spot price for a cryptocurrency asset via a pay-per-call API using x402 micropayments
- [Northline Geo-Time: Current Time Lookup](https://www.zero.xyz/c/northline-geo-time-current-time-lookup-5f7cd848/llms.txt): $0.005/call via x402. Returns the current local time and timezone information for a given geographic location, paid per-call via x402 USDC microtransaction.
- [Northline Secret Scan Sample](https://www.zero.xyz/c/northline-secret-scan-sample-a0dd5d6e/llms.txt): $0.01/call via x402. Scans provided text or code for exposed secrets, credentials, or sensitive tokens and returns detected findings
- [Northline Treasury Yields](https://www.zero.xyz/c/northline-treasury-yields-2f86bb55/llms.txt): $0.005/call via x402. Returns current US Treasury yield rates across maturities
- [Northline Crypto Token Price Lookup](https://www.zero.xyz/c/northline-crypto-token-price-lookup-aed092f1/llms.txt): $0.003/call via x402. Returns the current price of a specified cryptocurrency token, paid per-call via x402 micropayment protocol
- [Northline GitHub Commit Insights](https://www.zero.xyz/c/northline-github-commit-insights-2cee8eca/llms.txt): $0.005/call via x402. Retrieves commit-level analytics and insights for a GitHub repository, returning commit history, authorship patterns, and activity metrics.
- [Northline GitHub Release Insights](https://www.zero.xyz/c/northline-github-release-insights-d4fca026/llms.txt): $0.005/call via x402. Fetches structured insights and metadata for a specific GitHub repository release, including changelog analysis and release details
- [Northline Public Finance Data Source Map](https://www.zero.xyz/c/northline-public-finance-data-source-map-5ac807de/llms.txt): $0.25/call via x402. Downloads a Markdown reference document mapping public finance data sources for research and agent use
- [Northline Product Barcode Lookup](https://www.zero.xyz/c/northline-product-barcode-lookup-cb809114/llms.txt): $0.008/call via x402. Looks up product information by barcode (UPC/EAN) and returns product details such as name, brand, category, and description.
- [Northline Crypto Gas Price API](https://www.zero.xyz/c/northline-crypto-gas-price-api-ef60e0b7/llms.txt): $0.003/call via x402. Returns current Ethereum and EVM-compatible blockchain gas prices, paid per-call via x402 USDC micropayment on Base
- [Northline NWS Forecast Sample](https://www.zero.xyz/c/northline-nws-forecast-sample-fca9310a/llms.txt): $0.005/call via x402. Returns a sample National Weather Service (NWS) forecast for a given location via a pay-per-call x402 API
- [Northline Crypto Prices API](https://www.zero.xyz/c/northline-crypto-prices-api-c7b00490/llms.txt): $0.003/call via x402. Returns current cryptocurrency prices via a pay-per-call API using x402 micropayments (USDC on Base), no account or API key required.
- [Northline Sun Events Sample](https://www.zero.xyz/c/northline-sun-events-sample-3593e495/llms.txt): $0.01/call via x402. Returns a sample dataset of sun event times (sunrise, sunset, solar noon, etc.) for a given location and date
- [Northline x402 Service Launch Kit Documentation Download](https://www.zero.xyz/c/northline-x402-service-launch-kit-documentation-download-12cbdcd1/llms.txt): $0.25/call via x402. Downloads the x402-service-launch-kit markdown guide — a technical reference for building and deploying pay-per-call API services using the x402 payment protocol on Base/USDC
- [Northline Public Data Reference Playbook Download](https://www.zero.xyz/c/northline-public-data-reference-playbook-download-d933ce62/llms.txt): $0.25/call via x402. Downloads a Markdown-formatted reference playbook document covering public data sources and how to work with them, delivered as a paid file via x402 micropayment.
- [Northline Geo-Time Sample](https://www.zero.xyz/c/northline-geo-time-sample-e4724ce9/llms.txt): $0.005/call via x402. Returns geographic and time zone data for a given location, served as a pay-per-call API using x402 micropayments
- [Northline x402 Pricing Description Checklist](https://www.zero.xyz/c/northline-x402-pricing-description-checklist-cbd92f7a/llms.txt): $0.25/call via x402. Downloads a Markdown checklist document describing how to write effective x402 pricing descriptions for pay-per-call API endpoints
- [Northline Eval Case Generator](https://www.zero.xyz/c/northline-eval-case-generator-e0d0ec7c/llms.txt): $0.02/call via x402. Generates evaluation test cases for AI agent assessment and benchmarking
- [Northline Currency Rates Sample](https://www.zero.xyz/c/northline-currency-rates-sample-004f461d/llms.txt): $0.005/call via x402. Returns a sample of current foreign exchange currency rates via pay-per-call API with no account or API key required
- [Northline DOI Open Access Sample](https://www.zero.xyz/c/northline-doi-open-access-sample-8de6722e/llms.txt): $0.008/call via x402. Retrieves open-access metadata and content information for a given DOI (Digital Object Identifier) via a pay-per-call API
- [Northline Timezone Info Sample](https://www.zero.xyz/c/northline-timezone-info-sample-51feb83a/llms.txt): $0.01/call via x402. Returns sample timezone information for a given location, delivered via pay-per-call x402 micropayment with no API key required.
- [Northline DNS Records Sample](https://www.zero.xyz/c/northline-dns-records-sample-e379b325/llms.txt): $0.005/call via x402. Returns a sample set of DNS records for a domain, demonstrating the format and structure of DNS lookup results without requiring a real domain query.
- [Northline Bitcoin Address Sample Generator](https://www.zero.xyz/c/northline-bitcoin-address-sample-generator-7f1086c1/llms.txt): $0.008/call via x402. Generates a sample Bitcoin address for testing or demonstration purposes, paid per-call via x402 micropayment protocol
- [Northline Crypto Prices Sample](https://www.zero.xyz/c/northline-crypto-prices-sample-902ac6b6/llms.txt): $0.003/call via x402. Returns a sample of current cryptocurrency price data via a pay-per-call API using x402 micropayments
- [Northline Product Barcode Lookup (Sample)](https://www.zero.xyz/c/northline-product-barcode-lookup-sample-411aff8b/llms.txt): $0.008/call via x402. Looks up product information by barcode, returning product details for a sample/demo barcode via a pay-per-call API
- [Northline Agent Services Validate](https://www.zero.xyz/c/northline-agent-services-validate-149b66d0/llms.txt): $0.0025/call via x402. Validates agent service requests or inputs via a pay-per-call API endpoint using x402 micropayments on Base
- [Northline Agent Services Sample](https://www.zero.xyz/c/northline-agent-services-sample-80d7516f/llms.txt): $0.0025/call via x402. A sample pay-per-call agent service endpoint on the Northline platform, payable via x402 protocol using USDC on Base with no account or API key required.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

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