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Claude Toolkit

15 production-ready config templates for every major AI coding tool. All verified against 2026 documentation. Click to expand, copy to clipboard, drop into your project.

⌨️ Claude Code5🖱️ Cursor3🤖 GitHub Copilot3 Gemini CLI & Antigravity2🏄 Windsurf (Cascade)2
⌨️ Claude Code🖱️ Cursor🤖 GitHub Copilot Gemini CLI & Antigravity🏄 Windsurf (Cascade)
⌨️

Claude Code

Source: docs.anthropic.com
5 configs

Anthropic's CLI agent. Uses CLAUDE.md for project memory, .claude/ for skills, commands, hooks, and permissions.

CLAUDE.md
Project memory — read at every session start. Keep under 200 lines. Place at project root (team-shared, version-controlled) or ~/.claude/CLAUDE.md (global personal).
.claude/settings.json
Permissions, hooks, and behavior control. Project-level (committed to git). Use settings.local.json for personal overrides (gitignored).
.claude/skills/code-review/SKILL.md
On-demand skill — loads only when relevant. The description field in YAML frontmatter determines when Claude activates this skill (~100 tokens overhead per skill).
.claude/commands/deploy.md
Custom slash command — invoke with /deploy in Claude Code. Makes deployment a repeatable, safe process.
.claude/rules/error-handling.md
Rule files extend CLAUDE.md without bloating it. Loaded automatically. Great for team-wide conventions that don't fit in 200 lines.
🖱️

Cursor

Source: cursor.com/docs, cursor.directory
3 configs

AI-native code editor. Uses .cursor/rules/ folder with .mdc files (Markdown Context) for modular, glob-filtered rules.

.cursor/rules/project-context.mdc
Always-on project context. Tells Cursor what your stack is, so it generates code matching your exact setup.
.cursor/rules/typescript-standards.mdc
Scoped to TypeScript/TSX files only via glob pattern. Enforces type safety rules.
.cursor/rules/react-components.mdc
Scoped to React component files. Enforces component structure, accessibility, and performance patterns.
🤖

GitHub Copilot

Source: docs.github.com, code.visualstudio.com
3 configs

GitHub's AI pair programmer in VS Code. Uses .github/copilot-instructions.md for project-wide rules and .github/instructions/ for path-specific overrides.

.github/copilot-instructions.md
Project-wide Copilot instructions — automatically applied to all suggestions and chat interactions. Commit to git for team-wide standards.
.github/instructions/api-routes.instructions.md
Path-specific instructions — only applies to API route files matching the glob pattern. Great for enforcing endpoint-specific patterns.
.github/instructions/components.instructions.md
Scoped to React component files. Teaches Copilot your component patterns so suggestions match your architecture.

Gemini CLI & Antigravity

Source: geminicli.com, Google DeepMind docs
2 configs

Google's AI coding tools. Gemini CLI for terminal workflows, Antigravity for IDE agent sessions. Both read GEMINI.md for context.

GEMINI.md
Project context file — equivalent to CLAUDE.md. Read at session start. Place at project root or ~/.gemini/GEMINI.md for global rules.
.gemini/settings.json
Project-level Gemini settings. Controls model, permissions, and behavior. ⚠️ Warning: If you use both Gemini CLI and Antigravity, they share ~/.gemini/GEMINI.md — be careful of config pollution.
🏄

Windsurf (Cascade)

Source: windsurf docs, dev.to
2 configs

Agentic IDE powered by Cascade. Uses .windsurfrules (legacy) or .windsurf/rules/ folder for modular configs. Keep rules under 6,000 characters to avoid truncation.

.windsurfrules
Legacy single-file rules — simple and effective. Place at project root. For larger projects, migrate to .windsurf/rules/ folder.
.windsurf/rules/testing.md
Modern folder-based rule file — scoped to testing concerns. Cascade loads each file separately for cleaner context.

📊 Cross-Tool Cheat Sheet

FeatureClaude CodeCursorCopilotGemini CLIWindsurf
Project fileCLAUDE.md.cursor/rules/*.mdc.github/copilot-instructions.mdGEMINI.md.windsurfrules
Global file~/.claude/CLAUDE.mdSettings > RulesChat Customizations~/.gemini/GEMINI.md~/.windsurf/rules/
Scoped rules.claude/skills/globs in .mdc.github/instructions/.windsurf/rules/
Rules / overflow.claude/rules/Multiple .mdc filesMultiple .instructions.md.windsurf/rules/
Hooks / Auto-runPreToolUse / PostToolUse
Custom commands.claude/commands/
Permission controlallow / ask / denyallow / deny
Max recommended size~200 lines~6K chars per .mdcConcise~200 lines~6K chars

Why Use Config Files for AI Coding Tools?

AI coding assistants like Claude Code, Cursor, GitHub Copilot, Gemini CLI, and Windsurf are powerful — but only when they understand your project. Without a CLAUDE.md, .cursorrules, or copilot-instructions.md file, these tools generate generic code that may not match your stack, naming conventions, architecture patterns, or security requirements.

Configuration files act as "onboarding documents" for your AI assistant. They tell the tool what tech stack you use, which patterns to follow, what to avoid, and how to handle edge cases. The result: fewer corrections, faster iteration, and code that matches your team's standards from the first suggestion.

This toolkit provides 15 production-ready templates verified against the latest 2026 documentation for each tool. Every template is copy-paste ready — expand the card, click copy, and drop it into your project root. No sign-up, no paywall, no AI-generated fluff. Just real configs that work.

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