Claude Code — Settings Reference

Where each file goes

~/.claude/
├── settings.json          ← home-settings.json (renamed) — global, NEVER commit
│
mon-projet/
└── .claude/
    ├── settings.json      ← settings.json — project rules, commit to git
    └── settings.local.json← settings.local.json — personal, gitignored

Add to your project .gitignore:

.claude/settings.local.json

Precedence (highest → lowest)

managed-settings.json     system-wide, cannot be overridden
  └── CLI flags            --allowedTools, --disallowedTools (session only)
        └── settings.local.json   personal local
              └── settings.json   project (team)
                    └── ~/.claude/settings.json   global user

DENY always wins over ALLOW, regardless of level.

What goes where

Rule type	File
Deny secrets, SSH, rm -rf, sudo	`~/.claude/settings.json`
Deny git push --force, curl\|bash	`~/.claude/settings.json`
Ask git push, docker run, deploy	`~/.claude/settings.json`
Ask package managers (brew, apt)	`~/.claude/settings.json`
Allow git read-only, ls, cat, grep	`~/.claude/settings.json`
Allow npm/cargo/make/pytest...	`.claude/settings.json` (project)
Ask psql, mysql, redis-cli	`.claude/settings.json` (project)
Allow specific WebFetch domains	`.claude/settings.local.json`
Personal additionalDirectories	`.claude/settings.local.json`

defaultMode values

Value	Behavior	When to use
`default`	Prompts on first use of each tool	Normal development
`acceptEdits`	Auto-accepts file edits, prompts for Bash	Trusting sessions
`plan`	Read-only — Claude plans, cannot execute	Code review, audit
`bypassPermissions`	Skips all prompts — dangerous	CI/CD only, sandboxed env

Disable bypass permanently (set in ~/.claude/settings.json):

{ "permissions": { "disableBypassPermissionsMode": "disable" } }

Rule syntax

Bash

"Bash(git status)"         // exact match
"Bash(npm run test:*)"     // wildcard suffix
"Bash(git push*)"          // prefix match
"Bash(curl * | bash)"      // pipe pattern — block code injection

Read / Write / Edit — gitignore syntax

"Read(**/.env)"            // any .env in any subdirectory
"Read(**/secrets/**)"      // anything inside secrets/
"Read(src/**/*.ts)"        // all .ts under src/
"Write(**/*.key)"          // deny writing any .key file

WebFetch

"WebFetch(domain:docs.rs)" // specific domain only
"WebFetch"                  // all web fetches (no sub-pattern)

WebSearch

"WebSearch"                 // no sub-patterns supported

Agent / Skill / MCP

"Agent(explorer)"
"Skill(deploy *)"
"mcp__github__*"           // all tools from github MCP server
"mcp__playwright__navigate"

Security notes

Read(**/.env) only blocks the Read tool. Bash(cat .env) bypasses it unless you also deny that Bash command. → Use .claudeignore for hard file exclusion.
disableBypassPermissionsMode: "disable" prevents switching to bypass mode mid-session — set it in ~/.claude/settings.json.
Prefer ask over allow for anything touching external systems (git push, deploy, database commands, package install).
deny rules in ~/.claude/settings.json cannot be overridden by project-level allow rules — deny always wins globally.

managed-settings.json (enterprise)

Cannot be overridden by any user or project setting.

OS	Path
Windows	`C:\ProgramData\ClaudeCode\managed-settings.json`
macOS	`/Library/Application Support/ClaudeCode/managed-settings.json`
Linux	`/etc/claude-code/managed-settings.json`

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