faultline

Not yet reviewed

KOZMOS Faultline: the error lens in a sidebar. Every failed or denied tool call, refused or errored turn and API error, grouped by a masked signature with…

0 upvotes

Source: github.com/ersinkoc/claude-mods/tree/main/mods/faultline
Made by: KOZMOS
Pinned commit: No commit pinned yet
Review notes: Listed from the community catalogue awesome-claude-code-mods (https://github.com/karanb192/awesome-claude-code-mods) on 2026-10-18. Not reviewed by modsforClaude.com yet: the hooked events and what it uses come from that catalogue's automated scan of the source.
What a scan found: Sees tool calls

Stores data

Shows something on screen

Reported by an automated scan of the source, not checked by a person yet.
Hooked events: Tool call

UI

How to install

This mod is not in the official Claude directory, so you load it straight from its source on GitHub. modsforClaude.com is an unofficial community site: we do not host, repackage or install anything. Read the source and the review on this page first.

In the terminal

Clone the repository and start Claude Code with the mod. It stays loaded for that session.

git clone https://github.com/ersinkoc/claude-mods
claude --plugin-dir ./claude-mods/mods/faultline

In the desktop app

Clone the repository into a folder you keep:

git clone https://github.com/ersinkoc/claude-mods ~/claude-mods/claude-mods

Add that folder to CLAUDE_CODE_PLUGIN_DIRS in the env block of ~/.claude/settings.json, then start a new session in the Code tab. On Windows, with your own user name:

"env": {
  "CLAUDE_CODE_PLUGIN_DIRS": "C:\\Users\\you\\claude-mods\\claude-mods\\mods\\faultline"
}

On macOS and Linux:

"env": {
  "CLAUDE_CODE_PLUGIN_DIRS": "~/claude-mods/claude-mods/mods/faultline"
}

Already loading other mods this way? Add the folder to the same value, separated by ; on Windows or : on macOS and Linux.

Not working, or want to change its settings? How to load a Claude Code mod walks through every step.

KOZMOS Faultline: the error lens in a sidebar. Every failed or denied tool call, refused or errored turn and API error, grouped by a masked signature with count, first and last seen, the agents that hit it, the full first error (expandable) and a copy button, under a severity strip of the last 10 minutes. /faultline toggles it.

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[![Listed on modsforClaude](https://modsforclaude.com/badge/faultline.svg)](https://modsforclaude.com/mods/faultline/)

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faultline

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