00-core-principles

00-core-principles is a cursor rule for Cursor from bybren-llc/a-safe-pulse. It costs 771 tokens per session, scanned A, a copy of 00-core-principles, MIT.

Repository rules for using the Scaled Agile Framework (SAFe), a method for organising software work, with several defined AI team roles. They require checking existing patterns and specifications before creating new work.

In plain words
What is it for?
Use them to guide feature planning, architectural decisions, security concerns, and implementation work across the repository.
Why use it?
They reduce duplicated solutions and unclear responsibilities by setting a shared process for research, decisions, review, and delivery.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions CLAUDE.md; mentions AGENTS.md.

Good fit Use them to guide feature planning, architectural decisions, security concerns, and implementation work across the repository.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/bybren-llc/a-safe-pulse/00-core-principles
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.

Clone the repo
git clone --depth 1 https://github.com/bybren-llc/a-safe-pulse

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 00-core-principles

README.md
[![agentmods](https://agentmods.dev/badge/rules/bybren-llc/a-safe-pulse/00-core-principles.svg)](https://agentmods.dev/rules/bybren-llc/a-safe-pulse/00-core-principles)
Your own site
<a href="https://agentmods.dev/rules/bybren-llc/a-safe-pulse/00-core-principles"><img src="https://agentmods.dev/badge/rules/bybren-llc/a-safe-pulse/00-core-principles.svg" alt="Measured on agentmods" height="20"></a>
Per session 771 This file is loaded in full into every session.
When invoked 771 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 97% copy Near-identical to another mod 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 5.1 $0.00771 $0.00771
Opus 5 $0.00385 $0.00385
Sonnet 5 $0.00154 $0.00154
Haiku 4.5 $0.00077 $0.00077

Measured 3d ago against content hash 8eb4504d9c8a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

00-core-principles 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.

Origin

This is a copy

97% identical to 00-core-principles — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.cursor/rules/00-core-principles.mdc · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SAFe Core Principles

This repository uses SAFe (Scaled Agile Framework) Agentic Workflow with 11 specialized AI agent roles. You are part of a collaborative team where every contributor has equal voice.

Round Table Philosophy

  • Equal voice, mutual respect, shared responsibility
  • Every agent and human contributor's input carries equal weight
  • "Stop-the-line" authority: ANY contributor can halt work for architectural or security concerns
  • Decisions are evidence-based, not authority-based

Search First, Reuse Always

MANDATORY before implementing anything:

  1. Search patterns_library/ for existing code patterns
  2. Search specs/ for similar specifications
  3. Search the codebase for similar implementations
  4. Consult documentation (see CONTRIBUTING.md, docs/)
  5. Only create new patterns if nothing exists (and that is BSA/Architect's job)

See patterns_library/README.md for the full pattern index (18+ patterns across 7 categories).

SAFe Hierarchy

All work follows: Epic > Feature > Story > Enabler

  1. BSA creates spec in specs/ASP-XXX-feature-spec.md
  2. System Architect validates the architectural approach
  3. Implementation agents execute using discovered patterns
  4. QAS validates against acceptance criteria
  5. Evidence is attached to the project management ticket before POPM review

Metacognitive Tags

Use these in specs to flag critical decisions:

  • #PATH_DECISION -- Architectural path chosen (document alternatives)
  • #PLAN_UNCERTAINTY -- Areas requiring validation
  • #EXPORT_CRITICAL -- Security or compliance requirements

Key Resources

  • CLAUDE.md -- Full AI assistant context and development commands
  • AGENTS.md -- All 11 agent roles, invocation patterns, exit states
  • CONTRIBUTING.md -- Git workflow, commit standards, PR process
  • patterns_library/ -- Reusable code patterns (copy-paste ready)
  • docs/onboarding/ -- Setup guides and daily workflows
  • docs/guides/ROUND-TABLE-PHILOSOPHY.md -- Collaboration principles

Read the full file on GitHub · 85 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. 3d ago First seen · 85 lines · 771 tokens per session scan A 8eb4504d9c8a

Subscribe to this mod's changes

00-core-principles is a cursor rule published in the GitHub repository bybren-llc/a-safe-pulse (9 stars, last pushed 5mo ago), licensed MIT. It adds 771 tokens to every session, about $0.0039 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to 00-core-principles, differing in 4 lines, and is treated as a copy.

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