tree-sitter-analyzer: Skill for Claude Code

.claude/skills/tsa-health-watch/SKILL.md

tsa-health-watch is a skill for Claude Code from aimasteracc/tree-sitter-analyzer. It costs 157 tokens per session (1,204 once invoked), scanned A, original, MIT.

A codebase health checker that grades files from A to F across factors such as complexity, structure, dependencies, duplication, size, and change frequency.

In plain words
What is it for?
Use it to assess a project, inspect one file, find dead functions, view complexity hotspots, identify important dependency hubs, or watch for health-grade drops.
Why use it?
It helps locate code that is becoming difficult to maintain, unused code that may be removed, and files whose condition has worsened.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is aimasteracc/tree-sitter-analyzer's own configuration. It tells Claude Code how to work on tree-sitter-analyzer 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 tree-sitter-analyzer configures →

Reuse

Borrowing it

Nothing to install: this file belongs to aimasteracc/tree-sitter-analyzer. 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/aimasteracc/tree-sitter-analyzer/main/.claude/skills/tsa-health-watch/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/aimasteracc/tree-sitter-analyzer

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 tsa-health-watch

README.md
[![agentmods](https://agentmods.dev/badge/skills/aimasteracc/tree-sitter-analyzer/tsa-health-watch/github.svg)](https://agentmods.dev/skills/aimasteracc/tree-sitter-analyzer/tsa-health-watch)
Your own site
<a href="https://agentmods.dev/skills/aimasteracc/tree-sitter-analyzer/tsa-health-watch"><img src="https://agentmods.dev/badge/skills/aimasteracc/tree-sitter-analyzer/tsa-health-watch/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 tsa-health-watch

Your own site · 80×15
<a href="https://agentmods.dev/skills/aimasteracc/tree-sitter-analyzer/tsa-health-watch"><img src="https://agentmods.dev/badge/skills/aimasteracc/tree-sitter-analyzer/tsa-health-watch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 157 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,204 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00157 $0.01204
Opus 5 $0.00078 $0.00602
Sonnet 5 $0.00031 $0.00241
Haiku 4.5 $0.00016 $0.00120

Measured 11d ago against content hash 25777d2ccc3a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

tsa-health-watch 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 11d 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.

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/skills/tsa-health-watch/SKILL.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

tsa-health-watch — Project + file health in one pass

Grades files A→F across 6 dimensions (complexity, structure, dependencies, duplication, size, git-hotspot). Daemon mode alerts on grade drops live.

When to use

Goal Tool
Project portrait + worst files health action=project
One-file deep dive health action=file
Top hubs + sensory neurons health action=overview
Find dead functions health action=dead
Complexity hotspots (visualize) health action=heatmap
Watch & alert on degradation --watch-health CLI (Bash)

Procedure

One-shot triage (cold-start health audit)

Fan out in one message:

  1. health action=project with max_files: 20 — grade distribution + worst-20
  2. health action=dead with max_dead: 50 — pruning candidates
  3. health action=overview — hub functions + entry points + 0-degree leaves

Read the verdict. If D/F files exist in worst-20, drill into each with health action=file to get the per-dimension breakdown + recommendation.

Single-file investigation

health action=file file_path="<path>"

Returns:

  • grade: A | B | C | D | F (overall)
  • dimensions: {complexity, structure, dependencies, duplication, size, git_hotspot}
  • weakest_dimension: which one dragged grade down
  • signal: healthy | moderate_depth | high_complexity | etc.
  • recommendation: next concrete action

Long-running watch (daemon mode, T4)

Run in a separate terminal:

uv run tree-sitter-analyzer --watch-health \
  --threshold-grade C \
  --watch-interval 60 \
  --notify-channel stdout,file \
  --notify-file .tree-sitter-cache/health-events.jsonl \
  --on-degradation 'echo "ALERT: {file} {previous_grade}→{grade} ({recommendation})"'

Read the full file on GitHub · 136 lines

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. 11d ago First seen · 136 lines · 157 tokens per session scan A 25777d2ccc3a

Subscribe to this mod's changes

tsa-health-watch is a skill published in the GitHub repository aimasteracc/tree-sitter-analyzer (49 stars, last pushed today), licensed MIT. It adds 157 tokens to every session and 1,204 once invoked, about $0.0008 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 2026-08-30.

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