### 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? I told Claude Code to fetch `http://127.0.0.1:8033/about/` - a page on my local development server. It failed like this: ``` ▗ ▗ ▖ ▖ Claude Code v2.0.

[BUG] Fetch() tool against localhost http:// URLs fails because it tries https:// instead

Resolved 💬 3 comments Opened Oct 8, 2025 by simonw Closed Oct 11, 2025

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?

I told Claude Code to fetch http://127.0.0.1:8033/about/ - a page on my local development server. It failed like this:

▗ ▗   ▖ ▖  Claude Code v2.0.10
           Sonnet 4.5 · Claude Max
  ▘▘ ▝▝    /private/tmp/temp

> Fetch http://127.0.0.1:8033/about/ and tell me about the JS 

⏺ Fetch(http://127.0.0.1:8033/about/)
  ⎿  Error: write EPROTO 802C91F001000000:error:0A0000C6:SSL routines:tls_get_more_records:packet length too 
     long:ssl/record/methods/tls_common.c:663:

The Fetch() tool appeared to have attempted a fetch via https:// even though the URL starts http://.

In some cases Claude corrected itself by using curl like this, but it didn't do that reliably every time:

⏺ Bash(curl -s http://127.0.0.1:8033/about/)
  ⎿  <!DOCTYPE html>                
     <html lang="en-gb">
     <head>
     … +259 lines (ctrl+o to expand)

What Should Happen?

Claude should fetch URLs that start with http:// using HTTP - or if it attempts https:// first it should fall back to http:// if that fails.

Especially important for localhost or 127.0.0.1 URLs.

Error Messages/Logs

⎿  Error: write EPROTO 802C91F001000000:error:0A0000C6:SSL routines:tls_get_more_records:packet length too 
     long:ssl/record/methods/tls_common.c:663:

Steps to Reproduce

Run a local webserver. cd /tmp && python -m http.server 8001 should do the trick.
In a fresh Claude Code session prompt Fetch http://127.0.0.1:8001/ and tell me about it.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.10 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_

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