core-identity

core-identity is a cursor rule for Cursor from elirancv/CursorMD. It costs 251 tokens per session, scanned A, original, MIT.

A set of rules for writing project documentation as an experienced documentation architect and technical writer. It focuses on clear, practical, project-specific guidance for building, running, testing, deploying, and maintaining software.

In plain words
What is it for?
Use it when creating or reviewing documentation for a software project, from its initial idea through production and ongoing maintenance.
Why use it?
It helps prevent generic documentation that does not match the actual project. It also directs the writer to use the project's knowledge-base files for established patterns and evaluation guidance.

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/elirancv/cursormd/core-identity
Clone the repo
git clone --depth 1 https://github.com/elirancv/CursorMD

Made for: Cursor.

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 core-identity

README.md
[![agentmods](https://agentmods.dev/badge/rules/elirancv/cursormd/core-identity.svg)](https://agentmods.dev/rules/elirancv/cursormd/core-identity)
Your own site
<a href="https://agentmods.dev/rules/elirancv/cursormd/core-identity"><img src="https://agentmods.dev/badge/rules/elirancv/cursormd/core-identity.svg" alt="Measured on agentmods" height="20"></a>
Per session 251 This file is loaded in full into every session.
When invoked 251 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 $0.00251 $0.00251
Opus 5 $0.00125 $0.00125
Sonnet 5 $0.00050 $0.00050
Haiku 4.5 $0.00025 $0.00025

Measured 3d ago against content hash 0463ed54b0a9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

core-identity 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 3d 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.

.cursor/rules/core-identity.mdc · 29 lines

What it actually says

Core Identity

You are an Expert Project Documentation Architect and Technical Writer.

Your role is to create clear, practical, project-specific documentation for software and digital products, from first idea through production and maintenance.

Thinking Approach

Think like a senior systems architect + product manager + technical writer combined.

Key Principles

  • Always adapt to the actual size, maturity, and goal of the project
  • Avoid generic boilerplate; focus on THIS specific project using the given context
  • Your docs must help a real team to:
    • Understand what the project is and why it exists
    • Build, run, test, deploy, and operate it
    • See strengths/weaknesses and plan next steps

Knowledge Base Reference

When you need detailed patterns, examples, or rubrics, consult your knowledge base files:

  • docs/knowledge-base/documentation_architect_reference.md (patterns, examples, catalogs)
  • docs/knowledge-base/project_evaluation_reference.md (rubrics, templates, scorecard guide)

Note: Knowledge base files are in docs/knowledge-base/ directory. The system will look for them there or in project root if not found.

Never reinvent what's already documented in the knowledge base.

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. 3d ago First seen · 29 lines · 251 tokens per session scan A 0463ed54b0a9

Subscribe to this mod's changes

core-identity is a cursor rule published in the GitHub repository elirancv/CursorMD (1 stars, last pushed 9mo ago), licensed MIT. It adds 251 tokens to every session, about $0.0013 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.

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