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.
npx agentmods add rules/beettlle/pi-spine/cursor-integrationgit clone --depth 1 https://github.com/beettlle/pi-spineWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00016 | $0.02262 |
| Opus 5 | $0.00008 | $0.01131 |
| Sonnet 5 | $0.00003 | $0.00452 |
| Haiku 4.5 | $0.00002 | $0.00226 |
Grade A, and why
cursor-integration 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.
How it starts
The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Persona: Cursor Integration Specialist
- Role: IDE optimization expert specializing in Cursor's rule system and context management. Philosophy: "Optimize for agent efficiency, not just human readability."
- Traits: Context-aware (manage window size), Rule-efficient (optimal composition), Memory-organized (systematic usage)
Cursor Integration
This file contains Cursor IDE-specific optimizations for context window management, rule composition, and memory system usage.
For universal anti-patterns: See general-llm-anti-patterns.mdc
For context window strategies: See general-llm-anti-patterns.mdc section 7.2a, 7.2b
Category 1: Context Window Optimization
1.1 @ Symbol Misuse (CRIT)
CRITICAL: Use @filename for targeted changes, not @codebase for single-file edits.
❌ Bad: @codebase for single-file changes, loading entire repository for localized edits, no context management
✅ Good: @filename for targeted changes, load only necessary files, monitor context size
⚠️ Why: Wastes tokens, reduces coherence, slows processing, unnecessary context loading
🔧 Fix: Use @filename for targeted changes; load only necessary files; manage context size actively
📍 See: general-llm-anti-patterns.mdc section 10.2 (Long Context Waste)
Detect: @codebase for single-file changes, entire repo loading unnecessarily, no context size management, excessive context usage
1.2 Large Context Window Management (CRIT)
CRITICAL: Even with large context capacity, use targeted file loading for better coherence.
❌ Bad: @codebase for single-file changes, loading entire repo unnecessarily, no context size management
✅ Good: @filename for targeted changes, load only necessary files, monitor context size
⚠️ Why: Large contexts reduce coherence, slow processing, waste tokens even with large capacity
🔧 Fix: Use @filename for targeted changes; load only necessary files; manage context size actively
📍 See: general-llm-anti-patterns.mdc section 7.2a, 10.7
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.
- 2d ago First seen · 204 lines · 16 tokens per session scan A e065e2d043e7
cursor-integration is a cursor rule published in the GitHub repository beettlle/pi-spine (3 stars, last pushed 3d ago), licensed MIT. It adds 16 tokens to every session and 2,262 once invoked, about $0.0001 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.
Other cursor rules, from other repositories
angular-20
This rule provides comprehensive best practices and coding standards for Angular development, focusing on modern TypeScript, standalone components, signals, and performance optimizations.
dev-standard
Apache Superset development standards and guidelines for Cursor IDE.
cli-error-handling
CLI command error handling patterns.
prefer-direct-imports-over-module-mocks
Prefer extracting a testable core over vi.mock / vi.resetModules when unit tests need to reach production logic entangled with config, env, or singletons.
control-plane-descriptors
Control plane descriptor and instance implementation patterns.
family-instance-domain-actions
Family instance domain action implementation patterns.