code-review

A pre-submit checklist for C++ code using HTTP handlers, MongoDB, CMake, logging, threads, and memory management.

In plain words
What is it for?
Use it when reviewing changes involving request handlers, controllers, MongoDB updates, service initialization, logging, dependencies, or thread safety.
Why use it?
It helps prevent common crashes, missing libraries, data loss, memory leaks, and unsafe concurrency before code is submitted.

Cursor rule for Cursor

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 rules/hatefsystems/search-engine-core/code-review
Clone the repo
git clone --depth 1 https://github.com/hatefsystems/search-engine-core

Made for: Cursor.

Per session 250 This file is loaded in full into every session.
When invoked 250 The same file — it is already loaded in full.
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 $0.00250 $0.00250
Opus 5 $0.00125 $0.00125
Sonnet 5 $0.00050 $0.00050
Haiku 4.5 $0.00025 $0.00025

Measured yesterday against content hash 14f17fa2d124, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-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 yesterday.

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.

.cursor/rules/code-review.mdc · 29 lines

What it actually says

Code Review Checklist

Before submitting:

  • Every onData paired with onAborted
  • Controllers use lazy init (no service init in constructor)
  • Use LOG_DEBUG() not std::cout; respect LOG_LEVEL
  • MongoDB: basic builder + .extract() for complex updates
  • MongoDB instance initialized where needed
  • Error handling and logging in place
  • CMakeLists.txt updated if adding libs
  • No memory leaks; thread-safe where required

Common Issues

Symptom Cause Fix
Empty reply / POST crash Missing onAborted Pair with onData
MongoDB crash Instance not initialized MongoDBInstance::getInstance() first
Static init crash Services in controller ctor Lazy init with getters
Document loses fields Stream builder / no extract Basic builder + .extract()
Undefined reference Missing lib Add to target_link_libraries
Collection not found Inconsistent collection names Use same name in code and imports
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. yesterday First seen · 29 lines · 250 tokens per session scan A 14f17fa2d124

Subscribe to this mod's changes

code-review is a cursor rule published in the GitHub repository hatefsystems/search-engine-core (5 stars, last pushed 28d ago), licensed Apache-2.0. It adds 250 tokens to every session, about $0.0013 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.