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 alivirgo/Major-AI-Skills --skill selective-grep-filteringgit clone --depth 1 https://github.com/alivirgo/Major-AI-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/alivirgo/major-ai-skills/selective-grep-filtering)<a href="https://agentmods.dev/skills/alivirgo/major-ai-skills/selective-grep-filtering"><img src="https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/selective-grep-filtering/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/alivirgo/major-ai-skills/selective-grep-filtering"><img src="https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/selective-grep-filtering.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 | $0.00027 | $0.01106 |
| Opus 5.5 | $0.00011 | $0.00442 |
| Sonnet 5.5 | $0.00005 | $0.00221 |
| Haiku 4.5 | $0.00003 | $0.00111 |
Grade A, and why
selective-grep-filtering 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.
How it starts
The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Surgical Grep Filtering & Glob Targeting Protocol
Overview
When searching a repository for a specific method or constant ("handlePaymentCallback"), naive agents execute broad, unconstrained searches across the entire workspace directory.
Unfiltered searches return hundreds of false-positive matches:
- Test Snapshots & Fixtures: Matches in 50 Jest/Vitest snapshots that aren't part of production logic.
- Minified Bundles & Source Maps: Matches in
.mapordist/files that dump unreadable minified code into context. - Markdown Documentation: Matches in changelogs, READMEs, and tutorials.
The Surgical Grep Filtering Protocol constrains the search space using strict file extension globs, target directory scopes, and exact literal matching (IsRegex: false), returning strictly the 1 to 3 production source matches.
Unconstrained Search vs. Surgical Glob Filtering
┌─────────────────────────────────────────────────────────────┐
│ Search Precision Comparison │
│ │
│ Unconstrained Workspace Search (140 Matches / 6,200 Toks): │
│ • 80 matches in `tests/__snapshots__/` │
│ • 45 matches in `dist/bundle.js` │
│ • 12 matches in `docs/architecture.md` │
│ • 3 matches in `src/services/` │
│ ↳ 6,200 tokens billed, agent gets lost in snapshots │
│ │
│ Surgical Glob Filtering (3 Matches / 85 Tokens - 98.6% Cut):│
│ • Includes: `["src/**/*.ts", "!**/*.spec.ts"]` │
│ • Match: `src/services/billing.ts:42` │
│ • Match: `src/routes/payment.ts:18` │
│ ↳ 85 clean tokens, 100% production source hits │
└─────────────────────────────────────────────────────────────┘
The 3 Pillars of Surgical Search
┌───────────────────────────────────────────────────────────────────────────┐
│ 1. TARGET DIRECTORY ONLY: Confine `SearchPath` to `src/` or `pkg/` │
│ 2. EXCLUDE TESTS & SPECS: Add `!**/*.test.ts`, `!**/*.spec.py` │
│ 3. LITERAL MATCHING BY DEFAULT: Set `IsRegex: false` (Prevents regex bugs)│
└───────────────────────────────────────────────────────────────────────────┘
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 Changed · -19 tokens per session 58e21da7591e
- 1mo ago First seen · 114 lines · 46 tokens per session scan A 387c754265bb
selective-grep-filtering is a skill published in the GitHub repository alivirgo/Major-AI-Skills (2 stars, last pushed today), licensed MIT. It adds 27 tokens to every session and 1,106 once invoked, about $0.0001 per session on Opus 5.5. 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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