codex-usage-tracker: Skill for Claude Code

.claude/skills/gitnexus/gitnexus-cli/SKILL.md

gitnexus-cli is a skill for Claude Code from douglasmonsky/codex-usage-tracker. It costs 59 tokens per session (1,225 once invoked), scanned A, a copy of gitnexus-cli, MIT.

A command-line tool for analyzing a code repository and building a searchable map of how its code is connected.

In plain words
What is it for?
Use it to analyze a repository, check its index status, clean the index, generate a wiki, or list indexed repositories.
Why use it?
It gives developers a way to refresh or inspect the repository's code index before exploring the codebase.

Skill for Claude Code

Written for Claude Code: PostToolUse hook event. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

This is douglasmonsky/codex-usage-tracker's own configuration. It tells Claude Code how to work on codex-usage-tracker 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 codex-usage-tracker configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node .gitnexus/run.cjs analyze --index-only ..

Reuse

Borrowing it

Nothing to install: this file belongs to douglasmonsky/codex-usage-tracker. 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/douglasmonsky/codex-usage-tracker/main/.claude/skills/gitnexus/gitnexus-cli/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/douglasmonsky/codex-usage-tracker

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 gitnexus-cli

README.md
[![agentmods](https://agentmods.dev/badge/skills/douglasmonsky/codex-usage-tracker/gitnexus-cli/github.svg)](https://agentmods.dev/skills/douglasmonsky/codex-usage-tracker/gitnexus-cli)
Your own site
<a href="https://agentmods.dev/skills/douglasmonsky/codex-usage-tracker/gitnexus-cli"><img src="https://agentmods.dev/badge/skills/douglasmonsky/codex-usage-tracker/gitnexus-cli/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 gitnexus-cli

Your own site · 80×15
<a href="https://agentmods.dev/skills/douglasmonsky/codex-usage-tracker/gitnexus-cli"><img src="https://agentmods.dev/badge/skills/douglasmonsky/codex-usage-tracker/gitnexus-cli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,225 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.
Origin 83% copy Near-identical to another mod 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 $0.00059 $0.01225
Opus 5.5 $0.00024 $0.00490
Sonnet 5.5 $0.00012 $0.00245
Haiku 4.5 $0.00006 $0.00122

Measured 2mo ago against content hash 0056cabd03c7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gitnexus-cli 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 2mo 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.

Origin

This is a copy

83% identical to gitnexus-cli — 35 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/gitnexus/gitnexus-cli/SKILL.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitNexus CLI Commands

Commands below use node .gitnexus/run.cjs <command> — the project-local runner gitnexus analyze drops next to the index. It auto-selects an available runner at call time (global gitnexus, else pnpm dlx, else npx), so no package-manager assumption and no global install is required.

Not analyzed yet, or node .gitnexus/run.cjs reports Cannot find module (the gitignored runner is absent — e.g. a fresh clone or git clean)? Build only the local index with npx gitnexus analyze --index-only . from the project root. On npm 11.x, if npx crashes during install (node.target is null), install once with npm i -g gitnexus (then gitnexus analyze --index-only .) or use pnpm --allow-build=@ladybugdb/core --allow-build=gitnexus --allow-build=tree-sitter dlx gitnexus@latest analyze --index-only .. See #1939.

Commands

analyze — Build or refresh the index

node .gitnexus/run.cjs analyze --index-only .

Run from the project root. This parses source files, builds the knowledge graph, and writes it to .gitnexus/ without modifying repository guidance.

Flag Effect
--force Force full re-index even if up to date
--embeddings Enable embedding generation for semantic search (off by default)
--drop-embeddings Drop existing embeddings on rebuild. By default, an analyze without --embeddings preserves them.
--pdg Build the program-dependence layers used by explain and pdg_query (taint, CDG, and REACHING_DEF).
--index-only Refresh only the graph; do not rewrite agent guidance or repo-local skills.

Read the full file on GitHub · 100 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. 2mo ago First seen · 100 lines · 59 tokens per session scan A 0056cabd03c7

Subscribe to this mod's changes

gitnexus-cli is a skill published in the GitHub repository douglasmonsky/codex-usage-tracker (196 stars, last pushed 15d ago), licensed MIT. It adds 59 tokens to every session and 1,225 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 83% identical to gitnexus-cli, differing in 35 lines, and is treated as a copy.