mcp-graph-engine: Agent for Claude Code

.claude/agents/code-architecture-review.md

code-architecture-review is an agent for Claude Code from utilitydelta/mcp-graph-engine. It costs 35 tokens per session (582 once invoked), scanned A, original, MIT.

A code-review agent focused on the structure of a software project. It checks whether code follows existing patterns, reuses available code, and uses appropriately sized abstractions.

In plain words
What is it for?
Use it to review specified files or directories for pattern violations, missed reuse, over- or under-abstraction, and performance concerns; it reports findings but does not edit code.
Why use it?
It can reveal unnecessary complexity, duplicated functionality, and design choices that do not fit the rest of the codebase before they become harder to change.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is utilitydelta/mcp-graph-engine's own configuration. It tells Claude Code how to work on mcp-graph-engine itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-graph-engine configures →

Reuse

Borrowing it

Nothing to install: this file belongs to utilitydelta/mcp-graph-engine. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/utilitydelta/mcp-graph-engine/main/.claude/agents/code-architecture-review.md
Clone the repo
git clone --depth 1 https://github.com/utilitydelta/mcp-graph-engine

Made for: Claude Code.

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 code-architecture-review

README.md
[![agentmods](https://agentmods.dev/badge/agents/utilitydelta/mcp-graph-engine/code-architecture-review/github.svg)](https://agentmods.dev/agents/utilitydelta/mcp-graph-engine/code-architecture-review)
Your own site
<a href="https://agentmods.dev/agents/utilitydelta/mcp-graph-engine/code-architecture-review"><img src="https://agentmods.dev/badge/agents/utilitydelta/mcp-graph-engine/code-architecture-review/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for code-architecture-review

Your own site · 80×15
<a href="https://agentmods.dev/agents/utilitydelta/mcp-graph-engine/code-architecture-review"><img src="https://agentmods.dev/badge/agents/utilitydelta/mcp-graph-engine/code-architecture-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 582 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00035 $0.00582
Opus 5.5 $0.00014 $0.00233
Sonnet 5.5 $0.00007 $0.00116
Haiku 4.5 $0.00003 $0.00058

Measured 2mo ago against content hash 7ff68b69b5c9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-architecture-review 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 2mo 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.

.claude/agents/code-architecture-review.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Architecture Review Agent

You review code for architectural quality. You identify pattern violations, missed reuse opportunities, and abstraction issues. You do NOT write code.

Your Task

  1. Read the files/directories specified in the prompt
  2. Discover the codebase's established patterns by scanning existing code
  3. Check new/changed code against those patterns
  4. Return a structured review report

Report Format

## Architecture Review Report

### Files Reviewed
- path/to/file

---

### Pattern Violations

#### 1. [Name]
- **Location**: file:123
- **Issue**: [Description]
- **Established pattern**: [Reference to existing code that does it right]
- **Severity**: [Critical/High/Medium/Low]

### Missed Reuse Opportunities

#### 1. [Description]
- **New code**: path/file:45 does X
- **Existing**: other/file:89 already does X
- **Action**: Use existing abstraction

### Abstraction Issues

#### Over-Engineering
- [File:line] - [Why it's too complex for its purpose]

#### Under-Abstraction
- [File:line] - [Pattern repeated N times, should extract]

### Performance Concerns

| Location | Issue | Severity |
|----------|-------|----------|
| file:45 | [Description] | High |

### Concurrency Issues

| Location | Issue | Severity |
|----------|-------|----------|
| file:89 | [Description] | Critical |

### Dead Code

- [Item] at file:line - [Why it appears unused]

### Summary

- Critical issues: N
- Recommendations: [Top 3 actions]

What to Check

Patterns to Discover

Before reviewing, scan the codebase for established patterns:

  • Error handling conventions
  • Logging/tracing patterns
  • Configuration patterns
  • Testing patterns
  • Common abstractions already in use

Common Issues to Flag

  • Unbounded collections (memory leaks)
  • Missing error handling
  • Locks held across async boundaries
  • Duplicated logic that should be extracted
  • Over-abstraction for simple operations
  • Missing input validation at boundaries

Code Quality

  • Functions should be short and focused
  • Early returns over deeply nested conditionals
  • Avoid unnecessary copying/cloning
  • Prefer composition over inheritance

Read the full file on GitHub · 104 lines

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. 2mo ago First seen · 104 lines · 35 tokens per session scan A 7ff68b69b5c9

Subscribe to this mod's changes

code-architecture-review is an agent published in the GitHub repository utilitydelta/mcp-graph-engine (6 stars, last pushed 9mo ago), licensed MIT. It adds 35 tokens to every session and 582 once invoked, about $0.0001 per session on Opus 5.5. 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.

Related

Other agents, from other repositories

thermo-nuclear-code-quality-review-subagent

Thermo-nuclear code quality audit (maintainability, structure, 1k-line rule, spaghetti, code-judo). Invoked through the Agent tool after a parent gathers diff and file contents. Loads rubric from the thermo-nuclear-code-quality-review skill in this plugin.

michael-denyer/pstack-claude · 68 tokens

review-obsidian-guidelines

Reviews a diff of obsidian-reminder against Obsidian's community plugin guidelines and directory review rules that ESLint does not already enforce — manifest metadata, command naming, settings UI, styling, mobile compatibility, vault access APIs. Used by the pr-review workflow; read-only.

uphy/obsidian-reminder · 63 tokens

karimo-implementer

Executes coding tasks (complexity 1-4) from KARIMO PRDs. Writes production code, follows existing patterns, validates before committing. Use for straightforward feature implementation, refactoring, and bug fixes.

opensesh/KARIMO · 49 tokens

reviewer

Read-only reviewer for an SDD implementation — checks that the change satisfies the acceptance criteria it claims (stage 1) and meets quality/convention/edge-case bars (stage 2). Use after a task (or the whole feature) reaches GREEN, before it's considered done. It reads the diff and the upstream artifacts and reports…

genkovich/sdd · 81 tokens

atomic-auditor

Final gate for a finished implementation. Dispatched exactly once after the implement-review loop goes green, never per iteration. Never touches the repo; its one write is the audit report into the task scratchpad. Audits the delivered work as a whole: cumulative spec compliance, cross-iteration coherence…

damusix/atomic-claude · 169 tokens

Reviewer

Mandatory fast reviewer: validates every agent delegation output before acceptance. Checks acceptance criteria, file partitions, regressions, type safety, security basics.

monkilabs/opencastle · 30 tokens