HProxy Free Proxy List Integrates with AI Assistants

What changed

The HProxy free proxy list project has expanded its functionality to directly support AI assistants and agents. This enhancement enables AI applications to leverage the project's extensive, continuously verified list of free proxies. The project now provides a keyless API specifically designed for AI use, alongside an MCP (Meta-Command Protocol) server equipped with three tools: proxy_list, proxy_check, and ip_lookup. These tools are accessible by AI assistants, simplifying the process of finding and verifying proxies.

Detailed instructions and setup guides for AI development environments such as Claude Code, Claude Desktop, Cursor, and Windsurf are available on the HProxy website. The core API, which grants access to the proxy list, is documented on hproxy.com/docs/free-proxy-list. For AI assistants, a simplified, one-page markdown documentation is also provided at hproxy.com/llms/free-proxy.txt. This documentation outlines how to fetch the proxy list in JSON format, with options to filter by protocol (HTTP, HTTPS, SOCKS4, SOCKS5), country, anonymity level (elite, anonymous), and minimum uptime percentage. For example, a request to https://hproxy.com/api/proxy-list?format=json can be augmented with parameters like protocol=socks5, country=US, anonymity=elite, or min_uptime_pct=90.

Additionally, a proxy checking endpoint, https://hproxy.com/api/proxy-check?proxy=ip:port, is available for verifying the status of individual proxies. The project emphasizes that these are public free proxies, and users should anticipate that fewer than half may be operational at any given time. Therefore, implementing short timeouts and a fallback mechanism to the next available proxy is recommended.

The repository itself is updated several times a day, with the live list on hproxy.com refreshing every few minutes. It tracks over 870,000 proxies, with more than 12,000 live at any given moment and over 84,000 having responded within the last 48 hours. Each proxy entry includes details such as country, city, anonymity grade, latency, and uptime over 24 hours and 7 days. The data is available in TXT, JSON, and CSV formats, with filtered lists for specific protocols, countries, and anonymity tiers.

Why it matters for builders

AI builders can now seamlessly integrate a robust, real-time proxy management system into their agents and applications. The availability of a keyless API and dedicated AI tools simplifies the technical overhead associated with proxy acquisition and verification, allowing developers to focus on core AI logic. This direct integration can significantly enhance the capabilities of AI agents by enabling dynamic IP rotation, improved anonymity, and access to geographically diverse network points.

Practical impact

Developers can immediately begin incorporating the HProxy free proxy list into their AI projects. The provided Python, curl, and Node.js code snippets offer starting points for fetching and using proxies. For AI assistants, the simplified API documentation allows for quick integration. Builders should explore the filtering options available through the API to select proxies that best suit their specific needs, such as high anonymity for sensitive tasks or specific country locations for geo-testing. It is advisable to implement robust error handling and retry mechanisms given the nature of free proxies.

Caveats and source limits

The primary caveat is the inherent instability and lower reliability of free proxies. While HProxy verifies them, the source explicitly states that fewer than half may be operational at any given moment, necessitating careful implementation of timeouts and fallback strategies. The documentation does not specify any rate limits for the keyless API, but users should be mindful of potential usage thresholds. Furthermore, the "free" nature of these proxies means they are subject to the same risks as any public proxy, including potential logging or security vulnerabilities, which are not detailed in the provided source.