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 agentmods add skills/git-pkgs/skills/diffnpx skills add git-pkgs/skills --skill diffgit clone --depth 1 https://github.com/git-pkgs/skillsWhat 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 | $0.00033 | $0.00371 |
| Opus 5 | $0.00016 | $0.00186 |
| Sonnet 5 | $0.00007 | $0.00074 |
| Haiku 4.5 | $0.00003 | $0.00037 |
Grade A, and why
diff 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.
What it actually says
Compare Dependencies
See what dependencies changed between two points in time.
Commands
Compare HEAD against working tree (like git diff):
git-pkgs diff
Compare between commits or branches:
git-pkgs diff main..feature
git-pkgs diff --from=HEAD~10
git-pkgs diff --from=v1.0.0 --to=v2.0.0
Show dependency changes in a specific commit:
git-pkgs show
git-pkgs show abc1234
Compare two manifest or lockfiles directly:
git-pkgs diff-file Gemfile.lock.old Gemfile.lock
Install a git textconv driver so plain git diff on lockfiles shows sorted dependency lists instead of raw churn:
git-pkgs diff-driver --install
Options:
-e ECO- filter by ecosystem-t TYPE- filter by dependency type (runtime, development)--kind manifest|lockfile- only compare declarations or only resolved versions--stat- aggregate change counts instead of full listing-f json- JSON output
When to use
- Reviewing dependency changes in a pull request
- Comparing dependencies between releases
- Checking what changed after running an update
- Understanding the dependency impact of a specific commit
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.
- yesterday First seen · 54 lines · 33 tokens per session scan A d9dec419794b
diff is a skill published in the GitHub repository git-pkgs/skills (1 stars, last pushed 12d ago), licensed MIT. It adds 33 tokens to every session and 371 once invoked, about $0.0002 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 2026-08-31.
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