cursorrules

A set of rules requiring coding work to follow a fixed sequence: understand the context, plan, ask or revise, build, test, fix, and document. It is guidance for how an agent should carry out tasks.

In plain words
What is it for?
It helps structure feature development, select the appropriate guidance and project tools, inspect code, run tests, fix issues, and record the result.
Why use it?
It makes the work process explicit and requires testing and correction before the task is documented or proposed as complete.

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/junmystery/agent-guidance-python/cursorrules
Clone the repo
git clone --depth 1 https://github.com/JunMystery/Agent-Guidance-Python

Made for: Cursor.

Per session 1,227 This file is loaded in full into every session.
When invoked 1,227 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 $0.01227 $0.01227
Opus 5 $0.00613 $0.00613
Sonnet 5 $0.00245 $0.00245
Haiku 4.5 $0.00123 $0.00123

Measured yesterday against content hash 02bee6a3631f, 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 · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guidance MCP — Tool Selection Priority

You need to... Use THIS tool first Why
Start any task or phase agent-guidance-mcp_task_pipeline(task="...") Recommendations + tree + code search + UI in ONE call
Check coding standards / skills agent-guidance-mcp_guidance(operation="search", query="...") No other tool provides standards or skill lookup
Read a file agent-guidance-mcp_project_context(operation="read", relative_path="...") Token-capped at 300 lines — prevents context blowout
Search codebase text agent-guidance-mcp_project_context(operation="search", query="...") Ranked, bounded results. Fallback when codegraph unavailable
Understand code structure agent-guidance-mcp_project_context(operation="structure", relative_path="...") Hierarchical view of classes, methods, functions in a file
Extract symbols agent-guidance-mcp_project_context(operation="symbols", relative_path="...") Flat list of classes, functions, methods with signatures
Get structured workflow agent-guidance-mcp_guidance(operation="workflow", identifier="plan")"code""test" Enriched dev workflow with auto-chaining
Pre-code checklist agent-guidance-mcp_guidance(operation="precode", query="...") Coding conventions, security, testing, arch, deploy rules
Post-code verification agent-guidance-mcp_guidance(operation="verify", query="...") Auto-detect test/review/security/audit/deploy; suggests next workflow
Skill feedback loop agent-guidance-mcp_guidance(operation="feedback", identifier="...", rating=1-5, query="...") Rate skills to boost future recommendations for similar tasks
Find symbol references agent-guidance-mcp_project_context(operation="references", query="...") Locate all usages of a symbol across the codebase
Get UI/design guidance agent-guidance-mcp_ui_ux(operation="search", query="...") Style, colors, typography, charts, slides
Check workflow stage agent-guidance-mcp_workflow_gate(action="check"/"status"/"set_stage") Verify plan approvals and progress lifecycle
Persist/recover session agent-guidance-mcp_session_continuity(operation="save"/"load"/"clear") State recovery / task checklist continuity
Browse project tree agent-guidance-mcp_project_context(operation="tree") Optimized directory tree view

Read the full file on GitHub · 59 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. yesterday First seen · 59 lines · 1,227 tokens per session scan A 02bee6a3631f

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository JunMystery/Agent-Guidance-Python (2 stars, last pushed 1mo ago), licensed MIT. It adds 1,227 tokens to every session, about $0.0061 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.