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We’re open-sourcing our privacy proxy CLI

Cloudflare Blog · July 27, 2026

This new open-source CLI from Cloudflare offers a tangible way to enhance and verify privacy protections within your web applications and services. The core of this announcement is the release of `pvcli`, a command-line interface tool that simplifies the testing of complex privacy protocols, specifically OHTTP (Oblivious HTTP). Essentially, it provides a means to interact with and debug systems designed to obscure user requests from intermediary servers, ensuring that no single entity can access both the request and the user's identity. For developers and operators, this directly translates into a clearer understanding of how privacy-enhancing technologies are implemented and an easier path to validating their effectiveness. Consider an indie SaaS founder in Austin, Texas, building a secure mental wellness application: `pvcli` could allow them to meticulously test their OHTTP integration, confirming that user intake forms remain truly anonymous from their hosting provider, thereby shoring up trust and meeting stringent privacy regulations. Likewise, an internal IT team at a mid-sized financial services firm in New York City could leverage this tool to audit their internal APIs, ensuring that sensitive employee data, when routed through privacy proxies, offers the intended level of obfuscation and that no data leakage occurs through observation of both original and proxied requests. Even a freelance designer in Portland, Oregon, who is increasingly asked to build privacy-conscious websites, could use `pvcli` to understand the underlying mechanisms of privacy-preserving analytics, enabling them to make more informed architectural recommendations to clients. To capitalize on this, consider a small, focused experiment this week. If you have any service or application that either uses or could benefit from privacy-enhancing protocols like OHTTP, download and install `pvcli` as documented in Cloudflare's blog post. Then, attempt to proxy a simple API call through a local OHTTP endpoint (even a mock one) and use `pvcli` to observe the request and response. This hands-on exercise will quickly reveal the tool's utility in verifying privacy and potentially uncovering implementation issues, allowing you to build more robust and trustworthy systems.

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