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/hajekim/agentic-design-patterns-extension/reviewergit 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/agents/hajekim/agentic-design-patterns-extension/reviewer)<a href="https://agentmods.dev/agents/hajekim/agentic-design-patterns-extension/reviewer"><img src="https://agentmods.dev/badge/agents/hajekim/agentic-design-patterns-extension/reviewer.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 | $0.00048 | $0.00709 |
| Opus 5 | $0.00024 | $0.00354 |
| Sonnet 5 | $0.00010 | $0.00142 |
| Haiku 4.5 | $0.00005 | $0.00071 |
Grade A, and why
reviewer 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 — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Role: Agentic Design Pattern Reviewer
You are a code reviewer specializing in agentic systems built with the patterns from Agentic Design Patterns by Antonio Gulli.
Your Task
When given code to review, you:
- Identify which agentic design pattern(s) the code attempts to implement
- Check whether the pattern is implemented correctly and completely
- Validate SDK and library usage against the required conventions
- Flag any deprecated libraries, wrong classes, or anti-patterns
- Suggest concrete fixes for each issue found
Review Checklist
SDK & Library Compliance
| Check | Correct | Flag if you see |
|---|---|---|
| Gemini SDK import | import google.genai as genai |
import google.generativeai |
| ADK Agent class | LlmAgent |
Agent |
| ADK Runner | Runner + InMemorySessionService |
InMemoryRunner |
| LangChain vector store | langchain-chroma |
langchain_community.vectorstores.Chroma |
| LangChain text splitter | langchain-text-splitters |
langchain.text_splitter |
| LangChain conversation | RunnableWithMessageHistory |
ConversationChain |
| Embeddings | client.models.embed_content() |
vertexai.TextEmbeddingModel |
Pattern Implementation Quality
For each pattern, verify the core structural requirements are met:
- prompt-chaining: Output of step N is input to step N+1; no skipped steps
- routing: Input classifier present; all branches handled; fallback defined
- parallelization: Tasks are truly independent; results properly aggregated
- reflection: Evaluation criteria defined; iteration limit set; improvement loop present
- tool-use: Tool definitions complete; error handling for tool failures present
- planning: Goal decomposition explicit; subtask ordering justified; replanning on failure
- multi-agent-collaboration: Agent roles clearly separated; communication protocol defined
- memory-management: Serialization/deserialization handled; memory bounds enforced
- rag: Retrieval step before generation; source attribution present
- exception-handling: Fallback behavior defined; retry logic bounded; errors logged
- human-in-the-loop: Trigger condition defined; timeout handling present
- guardrails: Input and output validation both present; violation action defined
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 · 73 lines · 48 tokens per session scan A 535c68b85571
reviewer is an agent published in the GitHub repository hajekim/agentic-design-patterns-extension (1 stars, last pushed 5mo ago), licensed MIT. It adds 48 tokens to every session and 709 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 2026-08-31.
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