Claude Code in a Minute: Permissions

In one sentence

Permissions are the policy layer that decides when Claude Code may act alone and when it must stop for approval.

Why it matters

An agent without boundaries can delete files, push remotes, or exfiltrate secrets through tools. An agent with too many interruptions cannot finish work. Good permissions make the default path fast and the dangerous path explicit.

How it works

Claude Code combines tool access with allow/ask/deny style controls for actions such as editing files, running shell commands, and using networked tools. Exact configuration surfaces change over time; the engineering idea does not:

• allow routine local edits and read-only inspection;
• ask before destructive git operations or unknown network calls;
• deny operations that should never happen in that environment.

Match permission strictness to the workspace. A disposable branch in a clone can be looser than production credentials on a laptop.

Example

A practical policy for day-to-day feature work:

• allow: read files, edit tracked source, run project test/lint scripts;
• ask: git push, package installs, commands outside the repo;
• deny: reading .env* secrets into prompts unless you intentionally design a safer path.

Agentic coding use

Permissions are part of the product workflow, not an afterthought. When multiple agents run in parallel, each agent needs a workspace and a permission profile that match the blast radius you accept.

Watch out

“Allow all” is not a productivity setting. It is a deferred incident. Start stricter, then widen only the actions you repeatedly approve for good reason.