show-user-guide

A command that opens a project's User Guide in a web browser, using an online page first and a local HTML file as a fallback. It also points users to the Markdown version in the project.

In plain words
What is it for?
Use it when someone needs to read the Claude Code Mastery Project Starter Kit's User Guide.
Why use it?
It saves developers from locating the guide and choosing the right way to open it for their operating system. The local fallback helps when the online page cannot be opened.

Command for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/dr-code/tessera/show-user-guide
Clone the repo
git clone --depth 1 https://github.com/dr-code/tessera

Made for: Claude Code.

Per session 8 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 499 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00008 $0.00499
Opus 5 $0.00004 $0.00249
Sonnet 5 $0.00002 $0.00100
Haiku 4.5 $0.00001 $0.00050

Measured yesterday against content hash 0fa4a2e5d8cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

show-user-guide scanned grade A with 0 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 yesterday.

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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/show-user-guide.md · 59 lines

What it actually says

Open the User Guide for the Claude Code Mastery Project Starter Kit.

Steps

  1. Check for the HTML file at docs/user-guide.html in the project root.

  2. Open in browser — try the GitHub Pages URL first, fall back to local file:

    Primary (online):

    https://thedecipherist.github.io/claude-code-mastery-project-starter-kit/user-guide.html
    

    Fallback (local):

    docs/user-guide.html
    
  3. Detect the environment and use the correct open command:

    • WSL: wslview <url>
    • macOS: open <url>
    • Linux: xdg-open <url>
  4. Also mention the markdown version is available at USER_GUIDE.md in the project root for reading directly in GitHub or a text editor.

Detection Logic

# Detect platform and open URL
URL="https://thedecipherist.github.io/claude-code-mastery-project-starter-kit/user-guide.html"
LOCAL="docs/user-guide.html"

if grep -qi microsoft /proc/version 2>/dev/null; then
  # WSL
  wslview "$URL" 2>/dev/null || wslview "$LOCAL" 2>/dev/null || echo "Could not open browser. Visit: $URL"
elif [[ "$OSTYPE" == "darwin"* ]]; then
  # macOS
  open "$URL" 2>/dev/null || open "$LOCAL" 2>/dev/null || echo "Could not open browser. Visit: $URL"
else
  # Linux
  xdg-open "$URL" 2>/dev/null || xdg-open "$LOCAL" 2>/dev/null || echo "Could not open browser. Visit: $URL"
fi

Output

After opening, tell the user:

User Guide opened in your browser.

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. yesterday First seen · 59 lines · 8 tokens per session scan A 0fa4a2e5d8cb

Subscribe to this mod's changes

show-user-guide is a command published in the GitHub repository dr-code/tessera (1 stars, last pushed 21d ago), licensed MIT. It adds 8 tokens to every session and 499 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.