cursorrules

A project rule for finding information about routes, controllers, services, and data models in a codebase. It uses a pre-built code index and notes before opening source files.

In plain words
What is it for?
Use it when changing API routes, service logic, controllers, or entities, especially in a single-project Python repository.
Why use it?
It reduces the need to search through the whole repository blindly when tracing how the application works.

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/wandererer/codebeacon/cursorrules
Clone the repo
git clone --depth 1 https://github.com/Wandererer/codebeacon

Made for: Cursor.

Per session 537 This file is loaded in full into every session.
When invoked 537 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 $0.00537 $0.00537
Opus 5 $0.00269 $0.00269
Sonnet 5 $0.00107 $0.00107
Haiku 4.5 $0.00054 $0.00054

Measured yesterday against content hash f17294671142, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cursorrules 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.

.cursorrules · 75 lines

What it actually says

Project Context

Lookup strategy

A pre-built index lives in .codebeacon/. Use the 3-step lookup below before reaching for Glob or Grep.

Repo type: single — Single-project repo.

Step 1 — codebeacon wiki

Routes, controllers, services, entities.

.codebeacon/wiki/index.md                    ← global index
.codebeacon/wiki/{project}/controllers/{Name}.md  ← controller logic
.codebeacon/wiki/{project}/services/{Name}.md     ← service methods
.codebeacon/wiki/{project}/entities/{Name}.md     ← data models
.codebeacon/wiki/routes.md                   ← all API routes across projects

Step 2 — obsidian notes

Class-level detail (methods, fields, incoming/outgoing edges) the wiki omits. Look up by class name — replace {project} with the relevant folder:

.codebeacon/obsidian/{project}/{ClassName}.md
Project Notes Example
codebeacon 413 services, 3 entities affected_from_paths.py.md

Step 3 — source file

Open the paths surfaced by Steps 1–2.


Projects

Project Framework Routes Services Entities Components
codebeacon python 5 413 3 0

Common Commands

codebeacon (python)

# see project README  # build
# see project README  # run
# see project README  # all tests

Architecture

codebeacon: python · python Routes: 5 | Services: 413 | Entities: 3 | Components: 0

High-Impact Files

Changes here affect many other files:

  • codebeacon/common/safety.py (imported by 9 files)
  • codebeacon/discover/detector.py (imported by 6 files)
  • codebeacon/wiki/generator.py (imported by 6 files)
  • codebeacon/affected.py (imported by 5 files)
  • codebeacon/common/symbols.py (imported by 5 files)

Generated by codebeacon · 2026-06-11

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 · 75 lines · 537 tokens per session scan A f17294671142

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository Wandererer/codebeacon (2 stars, last pushed 1mo ago), licensed MIT. It adds 537 tokens to every session, about $0.0027 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.