Tools (Built-in Tool Overview)

Read-only Tools (Usually no approval needed)

• read: read file content (supports offset/limit)
• glob: find file paths by pattern (for example src/**/*.ts)
• grep: search content with rg (regex/file list/count)
• webfetch: restricted HTTP GET with cleaned text preview
• todo: in-process task list (not persisted)

Write Tools (Approval required)

• write: write files
• edit: patch file content
• save_memory: write long-term memory (store only user preferences/profile, not project details)

Execution Tools (High risk, approval required)

• bash: run shell commands and return stdout/stderr/exit code

• State goal and scope clearly: for example, "Only modify @packages/core/src/config/config.ts; do not touch other files."
• Read before write: for example, "Read @README.md first, then add one section based on the current structure."
• Set constraints: for example, "Do not run destructive commands; read-only only."

Use these pages when you need exact parameter/behavior details:

• read: docs/tool/read.md
• glob: docs/tool/glob.md
• grep: docs/tool/grep.md
• webfetch: docs/tool/webfetch.md
• write: docs/tool/write.md
• edit: docs/tool/edit.md
• bash: docs/tool/bash.md
• todo: docs/tool/todo.md
• save_memory: docs/tool/save_memory.md

• Tool approvals and dangerous mode: Tool Approval and Safety
• MCP external tools: MCP Extensions