001-philosophers-stone

001-philosophers-stone is a cursor rule for coding agents from hamzaamjad/cursor-rules. It costs 543 tokens per session, scanned A, original, MIT.

A set of rules for using memory tools to record important decisions and connect them with task planning, prioritisation, and risk checks.

In plain words
What is it for?
Use it to search stored project information, identify high-impact work, assess confidence, and check how changes affect related parts of a system.
Why use it?
It helps an assistant reuse relevant project knowledge instead of losing decisions or overlooking major risks.

Cursor rule

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/hamzaamjad/cursor-rules/001-philosophers-stone
Clone the repo
git clone --depth 1 https://github.com/hamzaamjad/cursor-rules

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for 001-philosophers-stone

README.md
[![agentmods](https://agentmods.dev/badge/rules/hamzaamjad/cursor-rules/001-philosophers-stone.svg)](https://agentmods.dev/rules/hamzaamjad/cursor-rules/001-philosophers-stone)
Your own site
<a href="https://agentmods.dev/rules/hamzaamjad/cursor-rules/001-philosophers-stone"><img src="https://agentmods.dev/badge/rules/hamzaamjad/cursor-rules/001-philosophers-stone.svg" alt="Measured on agentmods" height="20"></a>
Per session 543 This file is loaded in full into every session.
When invoked 543 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 $0.00543 $0.00543
Opus 5 $0.00271 $0.00271
Sonnet 5 $0.00109 $0.00109
Haiku 4.5 $0.00054 $0.00054

Measured 4d ago against content hash f4eb356614cd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

001-philosophers-stone 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 4d 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.

rules/000-core/001-philosophers-stone.mdc · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Execution Protocols

Modular Task Decomposition (stepwise-autonomy.mdc)

  • Categorize task complexity: Simple, Moderate, Complex
  • Formulate a discrete plan with verification checkpoints
  • Sequentially execute substeps; revise dynamically upon failure or divergence

ROI-Focused Prioritization (80-20-prioritization.mdc)

  • Explicitly identify top drivers, constraints, or failure points
  • Rank items according to estimated ROI, effort/impact ratios, or systemic bottleneck relief
  • Avoid non-essential exploration of low-leverage improvements unless prompted

Risk and Confidence Analysis

  • Every recommendation must include a basis for confidence
  • Apply counterfactual validation: what conditions must hold for this to be true?
  • Implement a Holistic Check for all directly and indirectly impacted components

Agentic Integration Guidance

Information Mapping and System Cartography

  • Proactively survey relevant artifacts: configuration files, schemas, prior scripts, memory nodes, decision logs
  • Leverage internal search services (mcp_memory_search, mcp_chroma_query_documents) to surface reusable knowledge
  • Normalize against potential workspace drift or path ambiguity

Planning Artifacts

  • Deliverables should include:

    • Explicit goals, completion criteria, and success metrics
    • Optional: Proposed folder hierarchy, task execution roadmap, or prompt orchestration schema

Persistent Learning & Memory Encoding

Use MCP-backed memory tools to capture strategic outcomes:

  • Principle extraction and reframing
  • Canonical prompt structures and schema definitions
  • Decisions and their causal rationales

Structure this using:

  • mcp_memory_create_entities for capturing first-order insights
  • mcp_memory_add_observations to log evolution or iteration traces
  • mcp_memory_create_relations to encode semantic lineage and dependency graphs

Model Output Format (Preferred for Executive Contexts)

### Recommendation 1: Template Classification Layer
**Description:** Implement deterministic pre-parsing logic to fingerprint invoice template variants using invariant keywords and structural cues. Route input accordingly to specialized parsing handlers.
**Effort:** Medium  
**Impact:** Extreme  
**Rationale:** Increases accuracy, modularity, and extensibility. Simplifies future maintenance and parallel development across template types.

Read the full file on GitHub · 77 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. 4d ago First seen · 77 lines · 543 tokens per session scan A f4eb356614cd

Subscribe to this mod's changes

001-philosophers-stone is a cursor rule published in the GitHub repository hamzaamjad/cursor-rules (2 stars, last pushed 1y ago), licensed MIT. It adds 543 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.