mycelium: Skill for Claude Code

.claude/skills/troubleshooting/SKILL.md

troubleshooting is a skill for Claude Code from mycelium-io/mycelium. It costs 69 tokens per session (2,300 once invoked), scanned F, original, no licence file.

A guide for finding and fixing common Mycelium installation and runtime problems. It covers command errors, service connections, Docker containers, language-model settings, memory features, and database changes.

In plain words
What is it for?
Use it when Mycelium will not install, commands fail, a backend cannot connect, containers misbehave, language-model settings are wrong, memory operations fail, or database migrations cause errors.
Why use it?
It provides a structured way to investigate failures instead of guessing at the cause.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is mycelium-io/mycelium's own configuration. It tells Claude Code how to work on mycelium itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mycelium configures →

Reuse

Borrowing it

Nothing to install: this file belongs to mycelium-io/mycelium. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/mycelium-io/mycelium/main/.claude/skills/troubleshooting/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/mycelium-io/mycelium

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for troubleshooting

README.md
[![agentmods](https://agentmods.dev/badge/skills/mycelium-io/mycelium/troubleshooting/github.svg)](https://agentmods.dev/skills/mycelium-io/mycelium/troubleshooting)
Your own site
<a href="https://agentmods.dev/skills/mycelium-io/mycelium/troubleshooting"><img src="https://agentmods.dev/badge/skills/mycelium-io/mycelium/troubleshooting/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for troubleshooting

Your own site · 80×15
<a href="https://agentmods.dev/skills/mycelium-io/mycelium/troubleshooting"><img src="https://agentmods.dev/badge/skills/mycelium-io/mycelium/troubleshooting.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,300 The whole file, excluding the scripts and references it only reads on demand.
Security scan F 4 findings. A grade says what 26 rules found in the file — not that it is safe. ✓ AI security review Sonnet 5 · 7 Sept 2026 📄 Read the review
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00069 $0.02300
Opus 5.5 $0.00028 $0.00920
Sonnet 5.5 $0.00014 $0.00460
Haiku 4.5 $0.00007 $0.00230

Measured 14d ago against content hash 16376c71e734, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade F, and why

troubleshooting scanned grade F with 4 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 14d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- Start daemon: `sudo systemctl start docker`

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://mycelium-io.github.io/mycelium/install.sh | bash

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

rm -rf ~/.mycelium # remove all config

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

# curl (on an Apple silicon Mac this installs the desktop app and links its CLI;
.claude/skills/troubleshooting/SKILL.md · 282 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 14d ago Changed 16376c71e734
  2. 19d ago Changed · +5 lines 3b742bdd3461
  3. 22d ago Changed · -35 lines · -3 tokens per session d5ce43ed83b6
  4. 1mo ago First seen · 312 lines · 72 tokens per session scan F 96cf693c6deb

Subscribe to this mod's changes

troubleshooting is a skill published in the GitHub repository mycelium-io/mycelium (125 stars, last pushed yesterday), with no licence file. It adds 69 tokens to every session and 2,300 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it F with 4 findings (asks for root, downloads and executes remote code, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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