diagnose

diagnose is a command for Claude Code from ThrownLemon/claude-code-plugins. It costs 8 tokens per session (365 once invoked), scanned C, original, MIT.

A command that sends a Cloudflare problem to a diagnostic helper for investigation. The helper checks the setup, gathers relevant state, identifies likely causes, and suggests fixes.

In plain words
What is it for?
Starting a Cloudflare diagnosis with a problem description and, when available, a specific zone or domain context.
Why use it?
It organizes the initial troubleshooting work so a Cloudflare issue can be examined systematically. It also requires potentially unsafe input to be checked before shell commands are used.

Command for Claude Code

Written for Claude Code: arguments in frontmatter. Also seen: mentions subagents.

Part of the cloudflare plugin — 1 skill, 6 commands, 1 agent shipped together

Good fit Starting a Cloudflare diagnosis with a problem description and, when available, a specific zone or domain context.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/thrownlemon/claude-code-plugins/diagnose
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.

Clone the repo
git clone --depth 1 https://github.com/ThrownLemon/claude-code-plugins

Made for: Claude Code.

Or install cloudflare, the plugin that ships this one along with the rest of its 1 skill, 6 commands, 1 agent.

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 diagnose

README.md
[![agentmods](https://agentmods.dev/badge/commands/thrownlemon/claude-code-plugins/diagnose/github.svg)](https://agentmods.dev/commands/thrownlemon/claude-code-plugins/diagnose)
Your own site
<a href="https://agentmods.dev/commands/thrownlemon/claude-code-plugins/diagnose"><img src="https://agentmods.dev/badge/commands/thrownlemon/claude-code-plugins/diagnose/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 diagnose

Your own site · 80×15
<a href="https://agentmods.dev/commands/thrownlemon/claude-code-plugins/diagnose"><img src="https://agentmods.dev/badge/commands/thrownlemon/claude-code-plugins/diagnose.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
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 365 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00008 $0.00365
Opus 5.5 $0.00003 $0.00146
Sonnet 5.5 $0.00002 $0.00073
Haiku 4.5 $0.00001 $0.00036

Measured 1mo ago against content hash 5cf21526c4f9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

diagnose scanned grade C with 1 finding 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 1mo 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.

Recursive force deletehighDestructive command

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

1. **Reject dangerous tokens.** If a value contains `$(`, backticks, `;`, `|`, `&`, `>`, `<`, or starts with `-` (could be mistaken for a flag), refuse and ask the user to rephrase. **Double-quoting does NOT block comman
plugins/cloudflare/commands/diagnose.md · 32 lines

What it actually says

Input Safety — apply before any Bash invocation

Treat every $ARGUMENTS.* value as untrusted input. Before passing any value to the Bash tool:

  1. Reject dangerous tokens. If a value contains $(, backticks, ;, |, &, >, <, or starts with - (could be mistaken for a flag), refuse and ask the user to rephrase. Double-quoting does NOT block command substitution — "$(rm -rf /)" still executes inside double quotes.
  2. Prefer the Bash tool's argv contract over constructed shell strings. When you must use a shell string, single-quote the value and escape embedded single quotes ('\''), or build the command via printf %q.
  3. Any "$ARGUMENTS.foo" patterns shown below are illustrative. Sanitize the value first; never blindly substitute.

Delegate to the cf-diagnostician subagent to diagnose the Cloudflare issue.

Invoke the subagent with the following context:

  • Problem description: $ARGUMENTS.problem
  • Zone context: $ARGUMENTS.zone (if provided)

The subagent will handle the full diagnostic workflow including verifying installation, gathering state, identifying root causes, and proposing fixes.

Simply respond: "Launching Cloudflare diagnostician subagent to investigate: $ARGUMENTS.problem" and let the subagent take over.

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. 1mo ago First seen · 32 lines · 8 tokens per session scan C 5cf21526c4f9

Subscribe to this mod's changes

diagnose is a command published in the GitHub repository ThrownLemon/claude-code-plugins (2 stars, last pushed 4mo ago), licensed MIT. It adds 8 tokens to every session and 365 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.