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/bcastelino/agent-skills-kit/commitnpx skills add bcastelino/agent-skills-kit --skill commitgit clone --depth 1 https://github.com/bcastelino/agent-skills-kitWhat 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 | $0.00036 | $0.00961 |
| Opus 5 | $0.00018 | $0.00481 |
| Sonnet 5 | $0.00007 | $0.00192 |
| Haiku 4.5 | $0.00004 | $0.00096 |
Grade A, and why
commit 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 2d 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 — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sentry Commit Messages
Follow these conventions when creating commits for Sentry projects.
When to Use This Skill
Use this skill when:
- Committing code changes
- Writing commit messages
- Formatting git history
- Following Sentry commit conventions
- Referencing Sentry issues in commits
Prerequisites
Before committing, ensure you're working on a feature branch, not the main branch.
# Check current branch
git branch --show-current
If you're on main or master, create a new branch first:
# Create and switch to a new branch
git checkout -b <type>/<short-description>
Branch naming should follow the pattern: <type>/<short-description> where type matches the commit type (e.g., feat/add-user-auth, fix/null-pointer-error, ref/extract-validation).
Format
<type>(<scope>): <subject>
<body>
<footer>
The header is required. Scope is optional. All lines must stay under 100 characters.
Commit Types
| Type | Purpose |
|---|---|
feat |
New feature |
fix |
Bug fix |
ref |
Refactoring (no behavior change) |
perf |
Performance improvement |
docs |
Documentation only |
test |
Test additions or corrections |
build |
Build system or dependencies |
ci |
CI configuration |
chore |
Maintenance tasks |
style |
Code formatting (no logic change) |
meta |
Repository metadata |
license |
License changes |
Subject Line Rules
- Use imperative, present tense: "Add feature" not "Added feature"
- Capitalize the first letter
- No period at the end
- Maximum 70 characters
Body Guidelines
- Explain what and why, not how
- Use imperative mood and present tense
- Include motivation for the change
- Contrast with previous behavior when relevant
Footer: Issue References
Reference issues in the footer using these patterns:
Fixes GH-1234
Fixes #1234
Fixes SENTRY-1234
Refs LINEAR-ABC-123
Fixescloses the issue when mergedRefslinks without closing
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.
- 2d ago First seen · 170 lines · 36 tokens per session scan A 3371d0ba45c5
commit is a skill published in the GitHub repository bcastelino/agent-skills-kit (2 stars, last pushed 27d ago), licensed MIT. It adds 36 tokens to every session and 961 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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