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/sethdford/flowx/memory-context-optimizationgit clone --depth 1 https://github.com/sethdford/flowxWhat 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 | $0.00000 | $0.02801 |
| Opus 5 | $0.00000 | $0.01401 |
| Sonnet 5 | $0.00000 | $0.00560 |
| Haiku 4.5 | $0.00000 | $0.00280 |
Grade A, and why
memory-context-optimization 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.
How it starts
The opening of the file, as written. The whole thing — 443 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Memory Management & Context Optimization Rules
🧠 CONTEXT WINDOW EFFICIENCY
Token Usage Optimization
- Minimize redundant information - never repeat what's already established
- Use precise technical language - avoid verbose explanations
- Reference existing patterns instead of re-explaining them
- Batch related operations to reduce context switching overhead
- Prioritize actionable information over background context
AI Interaction Patterns
// ✅ REQUIRED - Efficient AI collaboration
// Be specific: "Fix the memory leak in UserCache.ts line 45"
// Not: "There might be some issues with memory management"
// ✅ REQUIRED - Structured requests
// 1. State the exact problem
// 2. Show the relevant code snippet
// 3. Specify the desired outcome
// 4. Request tests if needed
// ✅ REQUIRED - Context-aware prompting
// "In the authentication module, add rate limiting to prevent brute force attacks"
// Include: module context + specific action + security reasoning
Chat Organization (Vibe Coding Pattern)
- Open new chats for distinct tasks to maintain clarity
- Keep agent chats short and focused (max 10 exchanges)
- Label chats clearly with purpose ("Feature X", "Bug Fix Y")
- Reference previous chats when building on past work
- Document effective prompts for reuse
Memory-Conscious Development
// ✅ REQUIRED - Bounded data structures
class ConversationHistory {
private readonly maxEntries = 100;
private entries: ConversationEntry[] = [];
addEntry(entry: ConversationEntry): void {
this.entries.push(entry);
if (this.entries.length > this.maxEntries) {
this.entries.shift(); // Remove oldest
}
}
// Use computed properties instead of storing derived data
get recentEntries(): ConversationEntry[] {
return this.entries.slice(-10);
}
}
// ❌ FORBIDDEN - Unbounded growth
class BadHistory {
private entries: ConversationEntry[] = []; // Grows forever
private cache = new Map(); // No cleanup strategy
private allUserActions: UserAction[] = []; // Memory leak
}
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.
- yesterday First seen · 443 lines · 0 tokens per session scan A 0fa843eb290e
memory-context-optimization is a cursor rule published in the GitHub repository sethdford/flowx (2 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,801 tokens. 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.
typescript
Changes to these high-fan-out internals can affect every message, delta, element, or rerun. Keep work in them minimal, and benchmark changes with representative stress-test apps.
coolify-ai-docs
Master reference to all Coolify AI documentation in .ai/ directory.
python_lib
Tips and guidelines specific to the development of the Streamlit Python library, not applicable to scripts and e2e tests.
specs
This directory contains product and tech specs for Streamlit features.