https://toddschiller.com/2026-06-01T00:00:00-04:00Human ✘ Artificial Intelligence2026-06-01T00:00:00-04:002026-06-01T00:00:00-04:00Todd Schillertag:toddschiller.com,2026-06-01:/blog/agent-browser-shield-alpha.html

Announcing the alpha of agent-browser-shield — a source-available defense layer (also available as an OpenClaw skill) that blocks prompt injection and dark patterns before they reach your agent.

<p>There are 6 billion internet users. With AI agents, we're quickly heading to 60 to 600 billion &quot;users&quot; of the web.</p> <p>How do we keep all those agents safe when they touch the browser?</p> <p>At PixieBrix, we've spent years protecting BPO contact centers from insider risk, fraud, and social engineering in the browser.</p> <p>Today, we're applying that defense to AI agents and making a free, source-available, browser extension available (on GitHub and ClawHub).</p> <p>Your AI agent that lands on a fresh page is one prompt injection away from leaking credentials, one dark pattern away from buying the wrong thing, and one fake review away from a bad recommendation.</p> <p>Agent Browser Shield sits between the browser and the agent. It blocks:</p> <ul> <li>Prompt injection: visible or hidden instructions in page content</li> <li>Dark patterns: manipulative UI designed to trick/coerce</li> <li>Context pollution: low-value context that impairs instruction following</li> </ul> <p>A useful side effect: stripping irrelevant content also cuts token burn.</p> <p>Come join us on our mission. File issues, send PRs, or just tell me what you hate/love!</p> <p>The threat surface for agentic browsing is evolving fast. Let's defend our AI assistants together!</p> <ul> <li>⭐ Star the GitHub repo: <a href="https://github.com/pixiebrix/agent-browser-shield">https://github.com/pixiebrix/agent-browser-shield</a></li> <li>🦞 Star the OpenClaw skill: <a href="https://clawhub.ai/pixiebrix/agent-browser-shield">https://clawhub.ai/pixiebrix/agent-browser-shield</a></li> </ul> <p><img src="/assets/images/agent-browser-shield-alpha/demo.webp" alt="Side-by-side demo: an unprotected agent vs. one shielded by agent-browser-shield" loading="lazy" decoding="async" /></p>