CLAUDE_CODE_DISABLE_WEB_FETCH

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_DISABLE_WEB_FETCH is a Claude Code environment variable: Turns off the WebFetch tool. An environment variable, so it disables WebFetch without a managed-settings file. Added in v2.1.285. Added in v2.1.285 and still present in v2.1.294. It is listed in the official reference.

How to set it

For one session, export it in the shell that starts Claude Code:

export CLAUDE_CODE_DISABLE_WEB_FETCH=<value>
claude

To apply it to every session, add it to the env object of a settings file:

// ~/.claude/settings.json
{
  "env": {
    "CLAUDE_CODE_DISABLE_WEB_FETCH": "<value>"
  }
}

Release notes that mention it

• Claude Code Version Tracker: Undocumented Env Vars, Feature Gates & Models
• claude-code-env-vars-v2-1-285

Related variables

• CLAUDE_CODE_DISABLE_ADVISOR_TOOL: Disables what appears to be an internal advisory tool.
• CLAUDE_CODE_DISABLE_BG_SHELL_PRESSURE_REAP
• CLAUDE_CODE_DISABLE_INLINE_SHELL_RM_PROMPT: Turns off the new prompt that catches a dangerous rm inside an inline bash -c or sh -c script.
• CLAUDE_CODE_DISABLE_POWERSHELL_CMD_RM_DENY
• CLAUDE_CODE_DISABLE_WINDOWS_SHELL_LAUNCHER
• CLAUDE_CODE_MAX_WEB_SEARCHES_PER_SESSION: Per-session ceiling on WebSearch tool calls (default 200), gated by a web_search_session_cap.
• CLAUDE_CODE_WEB_SEARCH_REFILLS_PER_HOUR: Sets how many web-search budget refills accrue per hour, overriding the value the feature gate serves.
• CLAUDE_CODE_WEB_SEARCH_FAST_ARG

Frequently asked questions

All variables, searchable: Claude Code environment variables.