### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) and this hasn't been reported yet - [x] This is a single bug report (please file separate reports for different bugs) - [x] I am using the latest version of Claude Code ### What's Wrong? When I ask claude on claude.ai about official documentation, it fails to read the files, because the domains are blocked by the sandbox. Both code.claude.

[BUG] The claude web sandbox blocks the claude docs

Status Closed — not planned

Maintainer reply None cached

Activity 5 comments · opened Aug 31, 2026 · closed Sep 3, 2026

Preflight Checklist

[x] I have searched existing issues and this hasn't been reported yet
[x] This is a single bug report (please file separate reports for different bugs)
[x] I am using the latest version of Claude Code

What's Wrong?

When I ask claude on claude.ai about official documentation, it fails to read the files, because the domains are blocked by the sandbox. Both code.claude.com and docs.claude.com are blocked.

What Should Happen?

Claude should be able to read the official docs

Error Messages/Logs

=== https://code.claude.com/docs/en/sessions.md
http=403 bytes=102
x-deny-reason: host_not_allowed
=== https://docs.claude.com/en/docs/claude-code/sessions.md
http=403 bytes=102
x-deny-reason: host_not_allowed

Steps to Reproduce

Go to claude.ai
Ask about the docs for claude
Claude gets errors like: Failed to fetch https://code.claude.com/docs/en/sessions.md

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

N/A

Platform

Anthropic API

Operating System

Other

Terminal/Shell