Borrowing it
Nothing to install: this file belongs to hajekim/agentic-design-patterns-extension. 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/hajekim/agentic-design-patterns-extension/main/GEMINI.mdgit clone --depth 1 https://github.com/hajekim/agentic-design-patterns-extensionWrote 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/instructions/hajekim/agentic-design-patterns-extension/gemini-md)<a href="https://agentmods.dev/instructions/hajekim/agentic-design-patterns-extension/gemini-md"><img src="https://agentmods.dev/badge/instructions/hajekim/agentic-design-patterns-extension/gemini-md.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 5.1 | $0.01106 | $0.01106 |
| Opus 5 | $0.00553 | $0.00553 |
| Sonnet 5 | $0.00221 | $0.00221 |
| Haiku 4.5 | $0.00111 | $0.00111 |
Grade A, and why
agentic-design-patterns-extension GEMINI.md 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 6d 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 — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agentic Design Patterns — Extension Context
This Extension provides 28 agentic design pattern skills based on Agentic Design Patterns by Antonio Gulli.
How This Extension Works
- Skills activate automatically when you describe a relevant task. You do not need to invoke them explicitly.
/pattern-summary [filter]lists all 28 patterns or filters by category/name. Example:/pattern-summary reliability/gen-skeleton <pattern>generates a Python code skeleton for any pattern. Example:/gen-skeleton planning- This context file is loaded at the start of every session.
28 Patterns — Quick Reference
Core Patterns
| Pattern | When to Use |
|---|---|
prompt-chaining |
Sequential steps where each output feeds the next |
routing |
Dynamic selection of handler based on input type |
parallelization |
Independent tasks that can run concurrently |
reflection |
Self-evaluation and iterative improvement |
tool-use |
Calling external APIs, databases, or functions |
planning |
Breaking complex goals into ordered subtasks |
multi-agent-collaboration |
Coordinating multiple specialized agents |
State Management
| Pattern | When to Use |
|---|---|
memory-management |
Persisting context across sessions |
learning-adaptation |
Adjusting behavior based on feedback |
mcp-setup |
Connecting to external tools via Model Context Protocol |
goal-setting |
Defining and tracking long-term agent objectives |
Reliability
| Pattern | When to Use |
|---|---|
exception-handling |
Graceful degradation and recovery from errors |
human-in-the-loop |
Human review at critical decision points |
rag |
Grounding responses in retrieved, up-to-date knowledge |
Advanced Patterns
| Pattern | When to Use |
|---|---|
a2a |
Agent-to-agent communication protocols |
resource-aware |
Optimizing for cost, latency, and token budget |
reasoning |
Structured chain-of-thought and problem decomposition |
guardrails |
Enforcing safety, policy, and output constraints |
evaluation |
Measuring and benchmarking agent performance |
prioritization |
Ranking and scheduling tasks by urgency and impact |
exploration |
Systematic discovery in unknown or large environments |
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.
- 6d ago First seen · 105 lines · 1,106 tokens per session scan A e04b8ee2b8b0
agentic-design-patterns-extension GEMINI.md is an instructions file published in the GitHub repository hajekim/agentic-design-patterns-extension (1 stars, last pushed 5mo ago), licensed MIT. It adds 1,106 tokens to every session, about $0.0055 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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