Tools

The toolset

• read_file — read the contents of a file to gather context.
• list_dir — list a directory to understand project layout.
• grep — search the codebase for a pattern, optionally scoped by a glob.
• write_file — create a new file with given contents.
• edit_file — make a targeted edit to an existing file by replacing a span of text.
• run_terminal — run a shell command (build, test, lint). Asks for approval unless pre-approved.
• web_fetch — fetch a specific URL to ground on docs or references.
• search_web — run a web search and read the top results.

Approvals & safety

Side-effecting tools — running commands and fetching the web — surface an approval prompt the first time. web_fetch refuses non-HTTP(S) URLs and blocks loopback and cloud-metadata addresses to prevent SSRF. You can extend the agent with your own tools via MCP servers.