analyze-complexity

analyze-complexity is a command for coding agents from rohitg00/awesome-claude-code-toolkit. It costs 0 tokens per session (301 once invoked), scanned A, original, Apache-2.0.

A command that measures how complicated the code is by counting decision paths in functions and assessing how difficult they are to understand.

In plain words
What is it for?
Use it to scan source files, rank the most complex functions and files, explain their complexity drivers, and track complexity over time.
Why use it?
It shows where code is hardest to maintain and helps identify functions that may be risky to change or need refactoring.

Command

Part of the complexity-reducer plugin — 2 commands shipped together

About the project

Awesome Claude Code Toolkit is a curated collection of extensions and configuration for Claude Code, including agents, skills, commands, plugins, hooks, rules, templates, MCP configurations, and companion apps. It is for Claude Code users who want ready-made workflows and integrations for different development tasks. The catalogue add-ons are selected components from this toolkit.

rohitg00/awesome-claude-code-toolkit · 2,587 stars · on GitHub

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/rohitg00/awesome-claude-code-toolkit/analyze-complexity
Clone the repo
git clone --depth 1 https://github.com/rohitg00/awesome-claude-code-toolkit

Or install complexity-reducer, the plugin that ships this one along with the rest of its 2 commands.

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 analyze-complexity

README.md
[![agentmods](https://agentmods.dev/badge/commands/rohitg00/awesome-claude-code-toolkit/analyze-complexity.svg)](https://agentmods.dev/commands/rohitg00/awesome-claude-code-toolkit/analyze-complexity)
Your own site
<a href="https://agentmods.dev/commands/rohitg00/awesome-claude-code-toolkit/analyze-complexity"><img src="https://agentmods.dev/badge/commands/rohitg00/awesome-claude-code-toolkit/analyze-complexity.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 301 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 $0.00000 $0.00301
Opus 5 $0.00000 $0.00151
Sonnet 5 $0.00000 $0.00060
Haiku 4.5 $0.00000 $0.00030

Measured yesterday against content hash 9f4f92d34301, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

analyze-complexity 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.

plugins/complexity-reducer/commands/analyze-complexity.md · 29 lines

What it actually says

/analyze-complexity - Analyze Code Complexity

Calculate cyclomatic complexity and identify overly complex functions.

Steps

  1. Detect the project language to select the appropriate complexity analysis tool
  2. Scan all source files excluding tests, vendor, and generated code
  3. Calculate cyclomatic complexity for each function and method
  4. Calculate cognitive complexity as a secondary metric
  5. Identify functions exceeding the threshold (default: cyclomatic > 10)
  6. Rank the top 20 most complex functions by complexity score
  7. For each complex function, identify the complexity drivers: nested conditionals, switch cases, loops
  8. Calculate file-level complexity averages and identify the most complex files
  9. Compare against industry benchmarks: low (1-5), moderate (6-10), high (11-20), very high (21+)
  10. Generate a formatted report with function name, file, line, complexity score
  11. Suggest specific refactoring strategies for the top 5 most complex functions
  12. Save the report and track complexity trends over time

Rules

  • Use cyclomatic complexity as the primary metric
  • Include cognitive complexity as a complementary measure
  • Exclude generated code, migrations, and configuration files
  • Threshold of 10 for warnings, 20 for critical flags
  • Consider function length alongside complexity (long + complex = priority)
  • Do not count simple switch/case with returns as highly complex
  • Report both absolute values and percentile rankings
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 · 29 lines · 0 tokens per session scan A 9f4f92d34301

Subscribe to this mod's changes

analyze-complexity is a command published in the GitHub repository rohitg00/awesome-claude-code-toolkit (2,587 stars, last pushed 3mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 301 tokens. 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 2026-09-03.