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.
npx skills add murphytrueman/design-system-ops --skill codebase-indexgit clone --depth 1 https://github.com/murphytrueman/design-system-opsWrote 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.
[](https://agentmods.dev/skills/murphytrueman/design-system-ops/codebase-index)<a href="https://agentmods.dev/skills/murphytrueman/design-system-ops/codebase-index"><img src="https://agentmods.dev/badge/skills/murphytrueman/design-system-ops/codebase-index/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.
<a href="https://agentmods.dev/skills/murphytrueman/design-system-ops/codebase-index"><img src="https://agentmods.dev/badge/skills/murphytrueman/design-system-ops/codebase-index.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00060 | $0.04171 |
| Opus 5.5 | $0.00024 | $0.01668 |
| Sonnet 5.5 | $0.00012 | $0.00834 |
| Haiku 4.5 | $0.00006 | $0.00417 |
Grade A, and why
codebase-index 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 22d 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.
How it starts
The opening of the file, as written. The whole thing — 337 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Codebase index
A skill for generating a pre-computed, machine-readable index of a design system's codebase. The index contains three pieces: a component inventory, a relationship graph, and summary statistics. Together they form a queryable map that eliminates the need for AI agents or developers to explore the codebase from scratch every time they need to understand the system.
Before you begin: verify references
Confirm that every path in this skill's frontmatter references: exists relative to this SKILL.md. If any is missing, stop: the install is incomplete, usually because a flattening installer (for example npx skills install) dropped the repo-root knowledge-notes/ directory. Tell the user to reinstall by a method in 1-INSTALL.md and run verify-install.sh from the install root. Proceed without the references only if the user explicitly says to, and then say in the output that it was produced without the pack's reference material.
Context
An agent exploring a codebase from scratch is slow and misses things; an agent loading a pre-computed index gets the whole picture in a few thousand tokens. This skill writes that index, and it is the pack's single producer of the component inventory and dependency graph: token-audit, component-audit, docs-coverage, component-decision-tree and agent-instructions read .ai/index/ rather than building their own. Run it after adding or removing components, and commit the output alongside the code.
Configuration
If .ds-ops-config.yml exists, follow the configuration-and-recurring knowledge note (../../knowledge-notes/configuration-and-recurring.md) for loading, integration fallbacks and recurring runs. This skill reads:
system.framework— pre-selects framework detectionsystem.component_paths— overrides default component directory scanningsystem.category_model— atomic design, functional, or custom categorisationintegrations.*— component data sources (see below)recurring.*— delta against the previous index (see Recurring workflow)
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.
- 22d ago Changed · +6 lines 1d079c047091
- 23d ago Changed · +23 lines · -72 tokens per session 8748c0b6ba62
- 1mo ago First seen · 308 lines · 132 tokens per session scan A b2119dd5fde2
codebase-index is a skill published in the GitHub repository murphytrueman/design-system-ops (208 stars, last pushed 23d ago), licensed MIT. It adds 60 tokens to every session and 4,171 once invoked, about $0.0002 per session on Opus 5.5. 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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