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Show HN: peerd – AI agent harness that runs entirely in your browser

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Why This Matters

peerd introduces a groundbreaking AI agent that operates entirely within the browser, eliminating the need for cloud infrastructure and enhancing user privacy and security. By leveraging the browser's native capabilities, it offers a decentralized, secure, and customizable AI experience, potentially reshaping how AI tools are integrated into everyday browsing. This development signals a shift towards more privacy-focused, client-side AI solutions in the tech industry, empowering consumers with greater control over their data.

Key Takeaways

peerd is the first AI agent harness native to the browser. It's a Chrome/Firefox extension that runs a full agent loop inside the browser you already use — with the tabs and sessions you already have. It reads and drives your pages, spins up sandboxed compute (JS Notebooks, full Linux VMs compiled to WebAssembly, personal client-side apps), and — on the preview channel — shares what it builds over a peer-to-peer WebRTC network built for agent-to-agent communication. BYOK to the model provider of your choice. No backend, no telemetry, no cloud component in the data path.

newdemo.mp4

The bet is structural: peerd uses the browser as its runtime, its hypervisor, and its security model. It inherits decades of hardened browser platform work — V8 isolates for sandboxing, WebCrypto for the vault, WebAuthn passkeys to unlock it, opaque-origin iframes, Subresource Integrity — and writes zero lines of its own cryptographic or process-isolation code. The agent that holds your keys never reads a raw page; a disposable runner with no keys and no network does, and its output comes back fenced as untrusted. And the agent never takes its own word for success: every action it drives is verified against the live page before it counts as done — the model proposes, the browser decides. (More at peerd.ai.)

The name is always lowercase: peerd .

Status: 0.x — experimental beta. It works and the initial feature buildout is complete and integrated (see STATUS.md ), but the surface is still moving: breaking changes are likely, storage formats may shift, and it drives your browser and holds your API keys — use it with care. There is no "V1" commitment; versions stay in the 0.x range until the surface stabilizes.

For the full, itemized list of what's shipped — categorized by module — see FEATURES.md .

Install

Developer preview: Load the source tree unpacked using the steps below. This is the current source-of-truth install path for contributors and early testers.

Store packages: Chrome Web Store / Firefox Add-ons listings will be linked here once they are approved. Store packages omit preview-only dweb pieces and the preview/dev advanced automation path.

Dweb preview (research package): GitHub Releases may include signed preview artifacts. If there is no release attached yet, use the source install path below.

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