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 nortonx/ai-tooling-free --skill update-claude-mdgit clone --depth 1 https://github.com/nortonx/ai-tooling-freeWrote 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/nortonx/ai-tooling-free/update-claude-md)<a href="https://agentmods.dev/skills/nortonx/ai-tooling-free/update-claude-md"><img src="https://agentmods.dev/badge/skills/nortonx/ai-tooling-free/update-claude-md/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/nortonx/ai-tooling-free/update-claude-md"><img src="https://agentmods.dev/badge/skills/nortonx/ai-tooling-free/update-claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00034 | $0.00739 |
| Opus 5.5 | $0.00014 | $0.00296 |
| Sonnet 5.5 | $0.00007 | $0.00148 |
| Haiku 4.5 | $0.00003 | $0.00074 |
Grade A, and why
update-claude-md 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 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.
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 — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Arguments
[<path-to-CLAUDE.md>]
- Optional. Explicit path to the CLAUDE.md to update; defaults to searching the repo root and
.claude/. - Examples:
/update-claude-md,/update-claude-md packages/api/CLAUDE.md
Copilot CLI note:
$ARGUMENTSdoes not substitute in skills; include the argument inline in your prompt.
Update CLAUDE.md
Analyze recent branch changes and propose additions to the project CLAUDE.md.
Scope
- Locate CLAUDE.md: Use
$ARGUMENTSas the path if provided; otherwise search the repo root and.claude/for aCLAUDE.mdfile. - Diff source: Changes between this branch and
main/master.
Task
- Read the current CLAUDE.md in full.
- Run
git diff main...HEAD(ormaster...HEAD) to get the branch diff. - Identify additions worth documenting: only stable, reusable conventions:
- New CLI commands, scripts, or tooling patterns introduced
- New architectural patterns or module conventions
- Non-obvious configuration or environment constraints
- Public API changes (new endpoints, changed contracts, new env vars)
- New dependencies and why they were added
- Gotchas, workarounds, or constraints discovered during the work
- Filter out:
- One-off fixes unlikely to recur
- Implementation details (function bodies, variable names)
- Anything already documented in CLAUDE.md
- Obvious information derivable from reading the code
Output
Show proposed additions as a diff; do not edit any files yet:
### Update: <path-to-CLAUDE.md>
**Why:** <one-line reason>
```diff
+ <addition: one line per concept>
Group by section if adding to multiple parts of the file. If nothing new is worth documenting, say so and explain why.
After showing the diff, ask: **"Apply these 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.
- 1mo ago Changed 771d9a9195f0
- 1mo ago First seen · 71 lines · 34 tokens per session scan A afd647e72ed7
update-claude-md is a skill published in the GitHub repository nortonx/ai-tooling-free (1 stars, last pushed 18d ago), licensed MIT. It adds 34 tokens to every session and 739 once invoked, about $0.0001 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 2026-08-31.
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