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 thesongzhu/Friday --skill workspace-diff-reviewgit clone --depth 1 https://github.com/thesongzhu/FridayWrote 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/thesongzhu/friday/workspace-diff-review)<a href="https://agentmods.dev/skills/thesongzhu/friday/workspace-diff-review"><img src="https://agentmods.dev/badge/skills/thesongzhu/friday/workspace-diff-review/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/thesongzhu/friday/workspace-diff-review"><img src="https://agentmods.dev/badge/skills/thesongzhu/friday/workspace-diff-review.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 | $0.00000 | $0.00209 |
| Opus 5.5 | $0.00000 | $0.00084 |
| Sonnet 5.5 | $0.00000 | $0.00042 |
| Haiku 4.5 | $0.00000 | $0.00021 |
Grade A, and why
workspace-diff-review 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.
What it actually says
Workspace Diff Review
Reviews the current workspace diff with a pre-landing mindset.
Design pattern: Reviewer
Review Protocol
- Load the checklist from
references/diff-review-checklist.md. - Run
git diffto capture the current workspace changes. - Evaluate each changed file against the checklist sections (Risk Assessment → Correctness → Landing Safety).
- For each finding, report:
- Severity (blocker / warning / info)
- File and line range
- Issue (what is risky or incorrect)
- Action (what to do before landing)
- Summarize: risky hotspots, missing validation coverage, and the next landing-safe action.
Constraints
- Focus on the diff, not the entire codebase.
- A clean diff with no findings should produce a short "ready to land" confirmation.
Typical triggers:
review current changesreview this diffwhat is risky in my current workspace changes
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 First seen · 29 lines · 0 tokens per session scan A 7e237f4537a7
workspace-diff-review is a skill published in the GitHub repository thesongzhu/Friday (836 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 209 tokens. 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.
Other skills, from other repositories
github-pr-workflow
Prepare a GitHub pull request from a feature branch — branch hygiene, commit shape, title/body, verification notes, screenshots for UI work, and replies to review comments.
gh-find-prs
Survey open Codewhale PRs and triage each for mergeability and disposition against the real landing branch.
hunk-release
Prepares, publishes, verifies, and curates Hunk releases. Use for release metadata, benchmarks, tags, publishing, release videos, backports, or recovery.
resolve-drive-pr
Drive an open PR through Polly/OCR, validation, and maintainer handoff.
describe-pr
Only use when the user explicitly invokes this skill by name.
feature-publish
Commit the feature, write the PR body, publish in the selected mode, and drive the PR.