Show HN: Browser Tools SDK – an optimal browser harness for agents

1 sources1 storiesFirst seen 7/21/2026Score19Mixed Progress

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tanishqkanc

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Hacker News

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AI-Generated Claims

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With just a few lines of code, you can give any agent a production-ready browser harness import { createAiSdkBrowserTools } from "libretto-browser-tools/ai-sdk"; import { LocalBrowserProvider } from "libretto-browser-tools"; const { tools } = createAiSdkBrowserTools(new LocalBrowserProvider()); const result = await generateText({ model: anthropic("claude-sonnet-4-5"), tools, prompt: "Go to Hacker News and tell me the top story", }); We built the Browser Tools SDK because access to a browser is one of the most important tools of a productive agent, but we found many of the existing tools lacking.

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Using the insights we gained building Libretto, we were able to build the SDK so that it's significantly more context and cost-efficient than other tools:We compared Browser Tools SDK against agent-browser, playwright-cli, and dev-browser on 26 live-site tasks with...

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