pattern-discovery

pattern-discovery is a skill for Claude Code, Codex from bybren-llc/safe-agentic-workflow. It costs 39 tokens per session (453 once invoked), scanned A, original, MIT.

A process for finding existing implementation patterns before writing new code. It checks a project's pattern library for examples covering APIs, user interfaces, databases, and testing.

In plain words
What is it for?
Use it before creating an API route, user-interface component, database operation, or other new feature, especially when deciding how the implementation should work.
Why use it?
It prevents new code from duplicating existing solutions or ignoring the project's established conventions.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/bybren-llc/safe-agentic-workflow/pattern-discovery
Any agent
npx skills add bybren-llc/safe-agentic-workflow --skill pattern-discovery
Clone the repo
git clone --depth 1 https://github.com/bybren-llc/safe-agentic-workflow

Made for: Claude Code, Codex.

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 pattern-discovery

README.md
[![agentmods](https://agentmods.dev/badge/skills/bybren-llc/safe-agentic-workflow/pattern-discovery.svg)](https://agentmods.dev/skills/bybren-llc/safe-agentic-workflow/pattern-discovery)
Your own site
<a href="https://agentmods.dev/skills/bybren-llc/safe-agentic-workflow/pattern-discovery"><img src="https://agentmods.dev/badge/skills/bybren-llc/safe-agentic-workflow/pattern-discovery.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 453 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00039 $0.00453
Opus 5 $0.00019 $0.00227
Sonnet 5 $0.00008 $0.00091
Haiku 4.5 $0.00004 $0.00045

Measured 5d ago against content hash 698fe0d41c70, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pattern-discovery 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 5d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.agents/skills/pattern-discovery/SKILL.md · 63 lines

What it actually says

Pattern Discovery Skill

Purpose

Enforce pattern-first development by checking the pattern library before implementing new functionality.

When to Use

  • About to create a new API route
  • About to create a new UI component
  • About to add database operations
  • User asks "how do I implement..." or "how should I build..."

Pattern Discovery Protocol

ALWAYS check patterns before writing new code:

Step 1: Check Pattern Library

ls patterns_library/api/      # API route patterns
ls patterns_library/ui/       # UI component patterns
ls patterns_library/database/ # Database patterns
ls patterns_library/testing/  # Testing patterns

Step 2: Review Pattern Index

See patterns_library/README.md for the complete index.

Step 3: Apply or Escalate

If pattern exists: Copy, customize, validate.

If missing: Search codebase, implement following conventions, report gap.

Pattern Matching Guide

If you need to... Use this pattern
Create authenticated API endpoint api/user-context-api.md
Create admin-only API endpoint api/admin-context-api.md
Handle external webhooks api/webhook-handler.md
Validate API input with Zod api/zod-validation-api.md
Create protected page ui/authenticated-page.md
Build form with validation ui/form-with-validation.md
Add new table with RLS database/rls-migration.md
Test API endpoints testing/api-integration-test.md

Reference

  • Pattern Index: patterns_library/README.md
  • RLS Patterns: See safe-workflow skill
  • Testing Patterns: See testing-patterns skill
Files

What ships with it

3 files 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. 5d ago First seen · 63 lines · 39 tokens per session scan A 698fe0d41c70

Subscribe to this mod's changes

pattern-discovery is a skill published in the GitHub repository bybren-llc/safe-agentic-workflow (406 stars, last pushed 1mo ago), licensed MIT. It adds 39 tokens to every session and 453 once invoked, about $0.0002 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.

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