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 agentmods add agents/smithdak/claude-marketplace/pattern-extractorgit clone --depth 1 https://github.com/smithdak/claude-marketplaceWrote 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/agents/smithdak/claude-marketplace/pattern-extractor)<a href="https://agentmods.dev/agents/smithdak/claude-marketplace/pattern-extractor"><img src="https://agentmods.dev/badge/agents/smithdak/claude-marketplace/pattern-extractor.svg" alt="Measured on agentmods" 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 | $0.00020 | $0.01708 |
| Opus 5 | $0.00010 | $0.00854 |
| Sonnet 5 | $0.00004 | $0.00342 |
| Haiku 4.5 | $0.00002 | $0.00171 |
Grade A, and why
optimizely-pattern-extractor 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 3d 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 — 328 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Optimizely Pattern Extractor Agent
Learn project-specific patterns, conventions, and architectural decisions to generate custom AI skills.
Extraction Areas
1. Content Type Patterns
Extract content type inheritance and structure patterns:
Glob: **/Models/Pages/**/*.cs
Glob: **/Models/Blocks/**/*.cs
Glob: **/Models/Media/**/*.cs
Extract:
- Base class hierarchy (e.g.,
SitePageData,SiteBlockData) - Common property patterns across content types
- Attribute usage (Display, Required, AllowedTypes)
- GUID naming patterns
- GroupName conventions
Example Pattern:
// Project pattern: All pages inherit from SitePageData
public abstract class SitePageData : PageData
{
[Display(GroupName = "SEO")]
public virtual string MetaTitle { get; set; }
[Display(GroupName = "SEO")]
[StringLength(160)]
public virtual string MetaDescription { get; set; }
}
2. Service Patterns
Extract service layer patterns:
Glob: **/Services/**/*.cs
Glob: **/Business/**/*.cs
Grep: interface I\w+Service
Grep: class \w+Service
Extract:
- Interface definitions
- Constructor injection patterns
- Common method signatures
- Error handling approaches
- Async patterns
3. Controller Patterns
Extract controller conventions:
Glob: **/Controllers/**/*.cs
Grep: : PageController<
Grep: : ContentController<
Grep: : BlockController<
Extract:
- Base controller usage
- Action naming conventions
- View model construction
- Route patterns
4. View Patterns
Extract Razor view conventions:
Glob: **/Views/**/*.cshtml
Extract:
- Layout structure
- Partial view organization
- Tag helper usage
- Content rendering patterns
5. Initialization Patterns
Extract initialization module patterns:
Glob: **/Initialization/**/*.cs
Grep: IInitializableModule
Grep: IConfigurableModule
Extract:
- Module organization
- Dependency declarations
- Configuration patterns
- Event subscriptions
6. Configuration Patterns
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.
- 3d ago First seen · 328 lines · 20 tokens per session scan A 3fd776fda7ff
optimizely-pattern-extractor is an agent published in the GitHub repository smithdak/claude-marketplace (2 stars, last pushed 7mo ago), licensed MIT. It adds 20 tokens to every session and 1,708 once invoked, about $0.0001 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.
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