insight-skill-gap

insight-skill-gap is a skill for Claude Code from allemaar/open-skills. It costs 76 tokens per session (873 once invoked), scanned A, original, Apache-2.0.

A review guide that examines recent development work to find reusable patterns missing from the skill library.

In plain words
What is it for?
Use it after implementation work or a retrospective to decide whether to create new skills or improve existing ones.
Why use it?
Useful techniques can remain buried in project code instead of being saved for future work.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the open-skills plugin — 70 skills shipped together

Good fit Use it after implementation work or a retrospective to decide whether to create new skills or improve existing ones.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/allemaar/open-skills/insight-skill-gap
Install

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.

Any agent
npx skills add allemaar/open-skills --skill insight-skill-gap
Clone the repo
git clone --depth 1 https://github.com/allemaar/open-skills

Made for: Claude Code.

Or install open-skills, the plugin that ships this one along with the rest of its 70 skills.

Wrote 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.

agentmods badge for insight-skill-gap

README.md
[![agentmods](https://agentmods.dev/badge/skills/allemaar/open-skills/insight-skill-gap/github.svg)](https://agentmods.dev/skills/allemaar/open-skills/insight-skill-gap)
Your own site
<a href="https://agentmods.dev/skills/allemaar/open-skills/insight-skill-gap"><img src="https://agentmods.dev/badge/skills/allemaar/open-skills/insight-skill-gap/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.

agentmods 80×15 button for insight-skill-gap

Your own site · 80×15
<a href="https://agentmods.dev/skills/allemaar/open-skills/insight-skill-gap"><img src="https://agentmods.dev/badge/skills/allemaar/open-skills/insight-skill-gap.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 873 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00076 $0.00873
Opus 5 $0.00038 $0.00436
Sonnet 5 $0.00015 $0.00175
Haiku 4.5 $0.00008 $0.00087

Measured 11d ago against content hash a1a7bc00966b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

insight-skill-gap 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 11d 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.

skills/insight-skill-gap/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/skill-gap

Identify gaps in the skill library based on recent implementation work — propose new skills or updates to existing ones.

Structured execution spec: protocol.yon. Read it for the canonical rules and step sequence; this file is explanation. The two must stay in sync — if you edit one, update the other and refresh the @STAMP date.

Skill Discovery Protocol — ensures reusable patterns don't stay buried in implementation code.

Phase 1 — Recent Work Scan

  1. Gather recent context — conversation history, changed files, new patterns introduced. Summarize: what was built, which libraries/frameworks were used, what novel patterns emerged.
  2. Load skill index — read the current skill index to know what already exists before analyzing gaps.

Phase 2 — Gap Analysis

Cross-reference patterns from Phase 1 against the skill index. Classify each pattern:

  • (A) Skill exists and covers it — no action
  • (B) Skill exists but is incomplete — propose update; specify which sections are missing or outdated
  • (C) No skill exists — evaluate against new-skill criteria below

Criteria for a new skill:

  • Pattern is reusable (used 2+ times, or clearly will be)
  • Pattern involves non-obvious decisions or gotchas
  • Pattern spans multiple files or concepts

Gate: gap analysis must be documented before proceeding.

Phase 3 — Skill Proposals

For each gap, draft a skill specification:

  • Skill name — domain-prefix convention (e.g., drizzle-*, nextjs16-*)
  • Skill family — domain prefix
  • Prerequisites — what the user needs to know first
  • Complexity estimate — how large/involved the skill content will be
  • Key sections to cover — what the skill should teach

Check new-skill-creator for template requirements before drafting. Present proposals to the user and wait for approval before proceeding.

Phase 4 — Execution (only if approved)

Create approved skills via /new-skill-creator. For updates, apply targeted edits to the relevant sections.

Read the full file on GitHub · 82 lines

Files

What ships with it

1 file 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.

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.

  1. 11d ago First seen · 82 lines · 76 tokens per session scan A a1a7bc00966b

Subscribe to this mod's changes

insight-skill-gap is a skill published in the GitHub repository allemaar/open-skills (14 stars, last pushed today), licensed Apache-2.0. It adds 76 tokens to every session and 873 once invoked, about $0.0004 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 2026-08-30.