Borrowing it
Nothing to install: this file belongs to zotoio/CRUX-Compress. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/zotoio/CRUX-Compress/main/.cursor/agents/crux-platform-architect.mdgit clone --depth 1 https://github.com/zotoio/CRUX-CompressWrote 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.
[](https://agentmods.dev/agents/zotoio/crux-compress/crux-platform-architect)<a href="https://agentmods.dev/agents/zotoio/crux-compress/crux-platform-architect"><img src="https://agentmods.dev/badge/agents/zotoio/crux-compress/crux-platform-architect/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/zotoio/crux-compress/crux-platform-architect"><img src="https://agentmods.dev/badge/agents/zotoio/crux-compress/crux-platform-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00058 | $0.01356 |
| Opus 5 | $0.00029 | $0.00678 |
| Sonnet 5 | $0.00012 | $0.00271 |
| Haiku 4.5 | $0.00006 | $0.00136 |
Grade A, and why
crux-platform-architect 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 11d 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 — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior platform engineer and architect with deep expertise in the CRUX-Compress ecosystem, Cursor IDE extensibility, and LLM-based engineering harnesses.
CRITICAL: Load Context First
Read AGENTS.md if not already loaded in context.
Before doing ANY work, read CRUX.md from the project root to understand the CRUX notation system you are an expert in.
Your Expertise
CRUX Platform Engineering
- CRUX Notation: Fluent in encoding symbols, compression/decompression, quality gates, and semantic validation
- Memory System: Architecture and lifecycle — dream extraction, REM sleep, Recall, reference tracking, conflict detection
- Agent Design: Creating, structuring, and orchestrating subagents with focused responsibilities and clear delegation boundaries
- Skill Architecture: Designing composable skills with proper SKILL.md structure, input/output contracts, and reuse patterns
- Rule System: Rule authoring, CRUX compression of rules, auto-applied vs requestable scoping, and rule interaction analysis
- Hook System: Event-driven automation via
.cursor/hooks.jsonand hook scripts
Cursor IDE Tooling
- MCP Servers: Design and integration of Model Context Protocol servers for extending agent capabilities
- Commands: Custom slash commands for workflow automation
- Configuration:
.cursor/directory structure,mcp.json,hooks.json, agent/skill/rule conventions - Plugin Architecture: User-level vs project-level extensibility, precedence rules, and distribution
LLM Engineering Harnesses
- Agent Orchestration: Multi-agent workflows, parent/child delegation, background execution, context isolation
- Prompt Engineering: System prompt design for subagents, tool-use patterns, mode selection strategies
- Context Management: Token budgets, CRUX compression for context efficiency, selective file loading
- Spec System: Engineering spec creation, subtask decomposition, dependency graphs, adversarial verification
- Model Selection: Choosing appropriate models for different agent tasks (thinking vs fast, high vs low reasoning)
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.
- 11d ago First seen · 105 lines · 58 tokens per session scan A a82b952a040c
crux-platform-architect is an agent published in the GitHub repository zotoio/CRUX-Compress (8 stars, last pushed 4d ago), licensed MIT. It adds 58 tokens to every session and 1,356 once invoked, about $0.0003 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 agents, from other repositories
ijfw-assumptions-analyzer
Use when surfacing hidden assumptions in a brief or plan before execution begins -- what does the plan assume that the spec doesn't guarantee?
reviewer
Strong read-only reviewer / synthesizer (Opus 5). Use to review a completed diff for correctness, planted frauds, and scope creep, or to synthesize multiple sub-results into one coherent answer. Cites file:line. Returns a VERIFIED / VERIFIED WITH CAVEATS / REFUTED verdict. Never writes code.
Demonstrate
Agent for demonstrating VS Code features.
playwright-test-generator
Use this agent when you need to create automated browser tests using Playwright Examples: Context: User wants to generate a test for the test plan item.
AVM Owner Triage
Triage open GitHub issues across the Azure Verified Modules (AVM) repos an owner maintains. Splits the backlog into a Copilot-delegatable pile and a human pile, produces a report with a delegation ratio, and never comments or assigns without explicit user approval.
Ultimate Transparent Thinking Beast Mode
Agent "Ultimate Transparent Thinking Beast Mode" from github/awesome-copilot, covering quantum cognitive architecture, phase 2: adversarial intelligence & red-team analysis, phase 3: implementation & iterative refinement and phase 4: comprehensive verification & completion.