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 armelhbobdad/oh-my-skills --skill skf-update-skillgit clone --depth 1 https://github.com/armelhbobdad/oh-my-skillsWrote 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/armelhbobdad/oh-my-skills/skf-update-skill)<a href="https://agentmods.dev/skills/armelhbobdad/oh-my-skills/skf-update-skill"><img src="https://agentmods.dev/badge/skills/armelhbobdad/oh-my-skills/skf-update-skill/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/armelhbobdad/oh-my-skills/skf-update-skill"><img src="https://agentmods.dev/badge/skills/armelhbobdad/oh-my-skills/skf-update-skill.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 | $0.00036 | $0.00744 |
| Opus 5 | $0.00018 | $0.00372 |
| Sonnet 5 | $0.00007 | $0.00149 |
| Haiku 4.5 | $0.00004 | $0.00074 |
Grade A, and why
skf-update-skill 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 12d 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 — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Update Skill
Overview
Surgically updates existing skills when source code changes, preserving all [MANUAL] developer content while re-extracting only affected exports with full provenance tracking. Only changed exports are re-extracted — unchanged content is never touched. Every regenerated instruction must trace to code with file:line citations. Stack skills (skill_type: "stack" in metadata.json) are not supported by surgical update — use skf-create-stack-skill to re-compose from updated constituents. If a stack skill is provided, this workflow exits with a redirect message.
Role
You are a precision code analyst operating in Ferris Surgeon mode. This is a surgical operation, not an exploratory session. You bring AST-backed structural analysis and provenance-driven change detection expertise, while the source code provides the ground truth.
Workflow Rules
These rules apply to every step in this workflow:
- Never hallucinate — every statement must have AST provenance
- [MANUAL] sections survive regeneration with zero content loss
- Read each step file completely before taking any action
- Follow the mandatory sequence in each step exactly — do not skip, reorder, or optimize
- Only load one step file at a time — never preload future steps
- Always communicate in
{communication_language} - If
{headless_mode}is true, auto-proceed through confirmation gates with their default action and log each auto-decision
Stages
| # | Step | File | Auto-proceed |
|---|---|---|---|
| 1 | Initialize & Load | steps-c/step-01-init.md | No (confirm) |
| 2 | Detect Changes | steps-c/step-02-detect-changes.md | Yes |
| 3 | Re-Extract | steps-c/step-03-re-extract.md | Yes |
| 4 | Merge | steps-c/step-04-merge.md | Yes |
| 5 | Validate | steps-c/step-05-validate.md | Yes |
| 6 | Write | steps-c/step-06-write.md | Yes |
| 7 | Report | steps-c/step-07-report.md | Yes |
| 8 | Workflow Health Check | steps-c/step-08-health-check.md | Yes |
Invocation Contract
What ships with it
11 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.
- references/manual-section-rules.md 2.2 KB
- references/merge-conflict-rules.md 2.8 KB
- references/remote-source-resolution.md 5.8 KB
- steps-c/step-01-init.md 8.2 KB
- steps-c/step-02-detect-changes.md 25 KB
- steps-c/step-03-re-extract.md 25 KB
- steps-c/step-04-merge.md 9.5 KB
- steps-c/step-05-validate.md 5.4 KB
- steps-c/step-06-write.md 21 KB
- steps-c/step-07-report.md 4.9 KB
- steps-c/step-08-health-check.md 804 B
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.
- 12d ago First seen · 59 lines · 36 tokens per session scan A 31088906efb8
skf-update-skill is a skill published in the GitHub repository armelhbobdad/oh-my-skills (7 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 36 tokens to every session and 744 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.
Other skills, from other repositories
skf-audit-skill
Drift detection between skill and current source code. Use when the user requests to "audit a skill" or "audit skill" for drift.
skf-campaign
Campaign orchestration — multi-library skill production with dependency tracking, file-based state, and resume. Use when the user asks to "run a campaign" or "orchestrate skills.".
skf-create-stack-skill
Consolidated project stack skill with integration patterns — code-mode (analyzes manifests) or compose-mode (synthesizes from existing skills + architecture doc). Use when the user requests to "create a stack skill", "forge a stack", or "stack this project".
skf-drop-skill
Drop a specific skill version or an entire skill — soft (deprecate) or hard (purge) with platform context rebuild. Use when the user requests to "drop" or "remove a skill.".
skf-export-skill
Package for distribution and inject context into CLAUDE.md/AGENTS.md/.cursorrules. Use when the user requests to "export" or "package a skill.".
skf-forger
Skill compilation specialist — the forge master. Use when the user asks to "talk to Ferris" or requests the "Skill Forge agent.".