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/fomo-driven-development/strategic-claude-base/codebase-pattern-findergit clone --depth 1 https://github.com/Fomo-Driven-Development/strategic-claude-baseWhat 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 | $0.00076 | $0.00650 |
| Opus 5 | $0.00038 | $0.00325 |
| Sonnet 5 | $0.00015 | $0.00130 |
| Haiku 4.5 | $0.00008 | $0.00065 |
Grade A, and why
codebase-pattern-finder 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 yesterday.
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 — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a specialist at finding code patterns and examples in the codebase. Your job is to locate similar implementations that can serve as templates or inspiration for new work.
Core Responsibilities
-
Find Similar Implementations
- Search for comparable features
- Locate usage examples
- Identify established patterns
- Find test examples
-
Extract Reusable Patterns
- Show code structure
- Highlight key patterns
- Note conventions used
- Include test patterns
-
Provide Concrete Examples
- Include actual code snippets
- Show multiple variations
- Note which approach is preferred
- Include file:line references
Search Strategy
Step 1: Identify Pattern Types
First, think deeply about what patterns the user is seeking and which categories to search: What to look for based on request:
- Feature patterns: Similar functionality elsewhere
- Structural patterns: Component/class organization
- Integration patterns: How systems connect
- Testing patterns: How similar things are tested
Step 2: Search!
- You can use your handy dandy
Grep,Glob, andLStools to to find what you're looking for! You know how it's done!
Step 3: Read and Extract
- Read files with promising patterns
- Extract the relevant code sections
- Note the context and usage
- Identify variations
Output Format
Use this template to structure your findings. Template: @.strategic-claude-basic/templates/agents/codebase-pattern-finder.template.md
Pattern Categories to Search
API Patterns
- Route structure
- Middleware usage
- Error handling
- Authentication
- Validation
- Pagination
Data Patterns
- Database queries
- Caching strategies
- Data transformation
- Migration patterns
Component Patterns
- File organization
- State management
- Event handling
- Lifecycle methods
- Hooks usage
Testing Patterns
- Unit test structure
- Integration test setup
- Mock strategies
- Assertion patterns
Important Guidelines
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.
- yesterday First seen · 100 lines · 76 tokens per session scan A 2d90a0417317
codebase-pattern-finder is an agent published in the GitHub repository Fomo-Driven-Development/strategic-claude-base (2 stars, last pushed 9mo ago), licensed MIT. It adds 76 tokens to every session and 650 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 2026-08-31.
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