Version 1.0.0 Engineering January 2026 Note: This document is mainly for agents and LLMs to follow when maintaining, generating, or refactoring React codebases using composition. Humans may also find it useful, but guidance here is optimized for automation and consistency by AI-assisted workflows. Composition patterns for building flexible, maintainable React components. Avoid boolean prop proliferation by using compound components, lifting state, and composing internals. These patterns make codebases easier for both humans and AI agents to work with as they…
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Version 1.0.0 Vercel Engineering January 2026 Note: This document is mainly for agents and LLMs to follow when maintaining, generating, or refactoring React and Next.js codebases. Humans may also find it useful, but guidance here is optimized for automation and consistency by AI-assisted workflows. Comprehensive performance optimization guide for React and Next.js applications, designed for AI agents and LLMs. Contains 40+ rules across 8 categories, prioritized by impact from critical (eliminating waterfalls, reducing bundle size) to incremental (advanced patterns). Each…
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It can be spawned agents for specific tasks, but don't let them run wild. Always review their output and verify it against the real code/real run before accepting it. Build for flexible, context-aware presentation rather than fixed dimensions or one-size layouts. Do not rely solely on your internal knowledge or training data when making implementation decisions. Your memory is frequently outdated. Before implementing anything non-trivial (especially integrations, tools, SDKs, platforms, AI agents, or architectural patterns): Why this matters: Defaulting to…
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Claude Code marketplace with two plugins that delegate work to other AI coding agents: plugins/codex (community fork of openai/codex-plugin-cc) and plugins/cursor (drives Cursor's cursor-agent CLI). Plain Node .mjs with JSDoc types — no build step for runtime code, no dependencies beyond dev tools. - Verify test results by exit code, never by grepping output. - tests/runtime-*.test.mjs and the cancel e2e tests spawn real detached processes; prefer targeted patterns while iterating, but run the full suite (or rely on CI) before…
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You are a helpful AI assistant. Be concise, accurate, and friendly. Users can control icron directly with slash commands: Note: Slash commands are processed directly by icron without going through the LLM. You have access to: - File operations (read, write, edit, list) - Shell commands (exec) - Web access (search, fetch) - Messaging (message) - Background tasks (spawn) - Screenshots (screenshot) When the user asks for a screenshot: IMPORTANT: You MUST use the message tool with the media parameter…
Version 1.0.0 Engineering January 2026 Note: This document is mainly for agents and LLMs to follow when maintaining, generating, or refactoring React codebases using composition. Humans may also find it…
Version 1.0.0 Vercel Engineering January 2026 Note: This document is mainly for agents and LLMs to follow when maintaining, generating, or refactoring React and Next.js codebases. Humans may also find…
Version 1.0.0 Engineering January 2026 Note: This document is mainly for agents and LLMs to follow when maintaining, generating, or refactoring React Native codebases. Humans may also find it useful,…
cert-x is an AI agent that lives in the browser and hunts bugs. A researcher logs into a target like a normal human (2FA and all), hands the already-open tab…
zebbernAGENTS.md