Borrowing it
Nothing to install: this file belongs to AlphaBitCore/nexus-gateway. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/AlphaBitCore/nexus-gateway/main/.claude/skills/gap-review/SKILL.mdgit clone --depth 1 https://github.com/AlphaBitCore/nexus-gatewayWrote 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/alphabitcore/nexus-gateway/gap-review)<a href="https://agentmods.dev/skills/alphabitcore/nexus-gateway/gap-review"><img src="https://agentmods.dev/badge/skills/alphabitcore/nexus-gateway/gap-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/alphabitcore/nexus-gateway/gap-review"><img src="https://agentmods.dev/badge/skills/alphabitcore/nexus-gateway/gap-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 | $0.00098 | $0.02921 |
| Opus 5 | $0.00049 | $0.01460 |
| Sonnet 5 | $0.00020 | $0.00584 |
| Haiku 4.5 | $0.00010 | $0.00292 |
Grade A, and why
gap-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 9d 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 — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Gap Review — SDD-Driven Parity Audit
This skill audits the alignment between SDD documents (the source of truth) and all downstream artifacts: architecture, requirements, OpenAPI specs, code implementation, and unit tests. It identifies gaps in both directions — docs that lag behind code and code that does not fully implement the SDD — then produces a prioritized plan to fix everything.
Core principle: The SDD defines what the system should do. Code that diverges from SDD is either a doc gap (SDD needs updating to match intentional code changes) or a code gap (code is incomplete). This skill distinguishes between the two and fixes both.
Invocation Protocol
When this skill is triggered, follow these steps in order. Do not skip steps. Do not start fixing anything before the audit is complete.
Phase 1: Scope Selection
Ask the user:
-
Which epics/stories to audit?
- All epics (full audit)
- Specific epic(s) (e.g., E1, E7)
- Specific story/stories (e.g., e1-s1, e7-s4)
- Auto-detect from recent git changes (use
git log --name-onlyto find recently changed source files, then map them back to SDD stories)
-
What is the priority?
- Code gaps (code does not implement SDD) — fix code first
- Doc gaps (docs do not reflect code) — update docs first
- Both equally (default)
If the user says "just run it" or similar, default to: auto-detect from recent git changes, both equally.
Phase 2: SDD Inventory & Mapping
For each story in scope:
- Read the SDD file from
docs/developers/specs/e{epic}-s{story}-{name}.md - Extract structured data:
- Story statement (As a / I want / So that)
- All tasks (T1, T2, ...)
- All acceptance criteria (checked and unchecked)
- Dependencies
- Map to related artifacts:
| Artifact | Location | How to find |
|---|---|---|
| Architecture | docs/users/product/architecture.md (system overview) + per-module docs via docs/developers/architecture/README.md (e.g., hook-architecture.md, routing-architecture.md) |
Find the SDD area in the trigger map; open the listed module arch doc(s). |
| Requirements | docs/developers/specs/e{epic}-*.md |
Match by epic number |
| OpenAPI spec | docs/users/api/openapi/e{epic}-s{story}-*.yaml |
Match by epic-story |
| Aggregate OpenAPI | docs/users/api/openapi/gateway-api.yaml |
Check if story endpoints are included |
| Code (gateway) | packages/gateway/src/ |
Match by feature area from SDD tasks |
| Code (dashboard) | packages/dashboard/src/ |
Match by feature area from SDD tasks |
| Unit tests | packages/*/src/**/*.test.ts, packages/*/src/**/*.spec.ts |
Match by module under test |
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.
- 9d ago First seen · 301 lines · 98 tokens per session scan A bdfd16fefbaa
gap-review is a skill published in the GitHub repository AlphaBitCore/nexus-gateway (23 stars, last pushed 7d ago), licensed Apache-2.0. It adds 98 tokens to every session and 2,921 once invoked, about $0.0005 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.
Other skills, from other repositories
audit-expert
Expert-level security auditing, compliance, code review, and vulnerability assessment. Use when the user mentions compliance, security review, code review, vulnerability assessment, SOC 2, or GDPR, or when the task involves Audit Types, Audit Frameworks, Audit Process, or Authentication Review.
defenseclaw-ops
Manage DefenseClaw enterprise security - scan components, manage tool permissions, view alerts, configure guardrails.
soc2-expert
Expert in SOC 2 compliance, trust service criteria, audit preparation, controls implementation, and security frameworks. Use when the user mentions compliance, audit, trust services, AICPA, controls, or security framework, or when the task involves Trust Service Criteria, SOC 2 Types, Security Common Criteria, or…
mariana-audit
Full-depth audit (a11y, UX, perf, SEO, security, DB, architecture, legal compliance, ops, observability) of a project. Audits by reading the source directly — installs nothing, writes nothing outside docs/audits/. Reports findings with file:line evidence and calibrated severity, optionally mitigates as discovered. Use…
audit
A guide to Linux security auditing, which records selected system and user actions for investigation and compliance checks. It uses auditd, Linux's system auditing service.
ai-identity-platform
Structured identity management for AI agent fleets — define, govern, and audit agent personas at scale.