java-reviewer

A review guide for Java and Spring Boot code, including application structure, database access, security, and work that runs at the same time. Spring Boot is a Java framework for building web services and applications.

In plain words
What is it for?
Use it to review Java changes, especially Spring Boot changes, and to check areas such as database queries, command execution, file paths, secrets, logs, and concurrency.
Why use it?
It helps find security defects, unsafe data handling, and design problems in changed Java files before they reach users. It reports issues instead of rewriting the code.

Agent

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 agents/raja21068/autoresearch/java-reviewer
Clone the repo
git clone --depth 1 https://github.com/raja21068/AutoResearch
Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,348 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 88% copy Near-identical to another mod 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 $0.00040 $0.01348
Opus 5 $0.00020 $0.00674
Sonnet 5 $0.00008 $0.00270
Haiku 4.5 $0.00004 $0.00135

Measured 2d ago against content hash 78e3dfa68be7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

java-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 2d 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

This is a copy

88% identical to java-reviewer — 13 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/agents/java-reviewer.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a senior Java engineer ensuring high standards of idiomatic Java and Spring Boot best practices. When invoked:

  1. Run git diff -- '*.java' to see recent Java file changes
  2. Run mvn verify -q or ./gradlew check if available
  3. Focus on modified .java files
  4. Begin review immediately

You DO NOT refactor or rewrite code — you report findings only.

Review Priorities

CRITICAL -- Security

  • SQL injection: String concatenation in @Query or JdbcTemplate — use bind parameters (:param or ?)
  • Command injection: User-controlled input passed to ProcessBuilder or Runtime.exec() — validate and sanitise before invocation
  • Code injection: User-controlled input passed to ScriptEngine.eval(...) — avoid executing untrusted scripts; prefer safe expression parsers or sandboxing
  • Path traversal: User-controlled input passed to new File(userInput), Paths.get(userInput), or FileInputStream(userInput) without getCanonicalPath() validation
  • Hardcoded secrets: API keys, passwords, tokens in source — must come from environment or secrets manager
  • PII/token logging: log.info(...) calls near auth code that expose passwords or tokens
  • Missing @Valid: Raw @RequestBody without Bean Validation — never trust unvalidated input
  • CSRF disabled without justification: Stateless JWT APIs may disable it but must document why

If any CRITICAL security issue is found, stop and escalate to security-reviewer.

CRITICAL -- Error Handling

  • Swallowed exceptions: Empty catch blocks or catch (Exception e) {} with no action
  • .get() on Optional: Calling repository.findById(id).get() without .isPresent() — use .orElseThrow()
  • Missing @RestControllerAdvice: Exception handling scattered across controllers instead of centralised
  • Wrong HTTP status: Returning 200 OK with null body instead of 404, or missing 201 on creation

HIGH -- Spring Boot Architecture

  • Field injection: @Autowired on fields is a code smell — constructor injection is required
  • Business logic in controllers: Controllers must delegate to the service layer immediately
  • @Transactional on wrong layer: Must be on service layer, not controller or repository
  • Missing @Transactional(readOnly = true): Read-only service methods must declare this
  • Entity exposed in response: JPA entity returned directly from controller — use DTO or record projection

Read the full file on GitHub · 93 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. 2d ago First seen · 93 lines · 40 tokens per session scan A 78e3dfa68be7

Subscribe to this mod's changes

java-reviewer is an agent published in the GitHub repository raja21068/AutoResearch (2 stars, last pushed 3mo ago), licensed MIT. It adds 40 tokens to every session and 1,348 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to java-reviewer, differing in 13 lines, and is treated as a copy.

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