Borrowing it
Nothing to install: this file belongs to NickCrew/Claude-Cortex. 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/NickCrew/Claude-Cortex/main/AGENTS.mdgit clone --depth 1 https://github.com/NickCrew/Claude-CortexWrote 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/instructions/nickcrew/claude-cortex/agents-md)<a href="https://agentmods.dev/instructions/nickcrew/claude-cortex/agents-md"><img src="https://agentmods.dev/badge/instructions/nickcrew/claude-cortex/agents-md/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/instructions/nickcrew/claude-cortex/agents-md"><img src="https://agentmods.dev/badge/instructions/nickcrew/claude-cortex/agents-md.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 | $0.01670 | $0.01670 |
| Opus 5.5 | $0.00668 | $0.00668 |
| Sonnet 5.5 | $0.00334 | $0.00334 |
| Haiku 4.5 | $0.00167 | $0.00167 |
Grade A, and why
Claude-Cortex AGENTS.md 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 2mo 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 — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Build, Test, and Development Commands
# Installation
just install # Full installation via legacy scripts
pip install -e ".[dev]" # Development install with extras
# Testing
just test # Run pytest suite
just test-cov # Run with coverage (output: htmlcov/)
pytest -m unit # Unit tests only
pytest -m integration # Integration tests only
pytest tests/unit/test_composer.py::TestComposer::test_specific # Single test
# Code Quality
just lint # Check formatting with Black
just lint-fix # Auto-format with Black
just type-check # Strict mypy on core modules
just type-check-all # Full mypy (informational)
python3 -m mypy --strict claude_ctx_py # Direct strict check
# Build & Docs
python -m build # Build sdist/wheel
just docs # Serve docs locally (requires Ruby/bundler)
just docs-build # Build static docs
Architecture Overview
Core Module Organization (claude_ctx_py/)
The Python package follows a domain-driven architecture:
claude_ctx_py/
├── cli.py # Main CLI entrypoint (argparse-based)
├── core/ # Domain modules re-exported via __init__.py
│ ├── base.py # Utilities, path resolution, YAML/front-matter parsing
│ ├── agents.py # Agent graph, dependencies, activation
│ ├── skills.py # Skill discovery, metrics, community integration
│ ├── rules.py # Rule management
│ ├── hooks.py # Hook installation and validation
│ ├── mcp.py # MCP server discovery and configuration
│ ├── mcp_installer.py # MCP server installation
│ ├── mcp_registry.py # MCP server registry
│ ├── worktrees.py # Git worktree management
│ ├── backup.py # Configuration backup/restore
│ ├── components.py # Shared component utilities
│ ├── asset_discovery.py # Asset discovery across scopes
│ ├── asset_installer.py # Asset installation (symlinks)
│ ├── codex_skills.py # Codex skill integration
│ └── context_export.py # Context export functionality
├── tui/ # Textual-based terminal UI
│ ├── main.py # CortexApp (main application class)
│ ├── types.py # TypedDicts for TUI data structures
│ ├── constants.py # View bindings, profile descriptions
│ ├── dialogs/ # Modal dialogs (backup, profile editor, LLM settings)
│ └── widgets.py # Custom Textual widgets
├── intelligence/ # AI-powered automation
│ ├── base.py # SessionContext, AgentRecommendation dataclasses
│ ├── semantic.py # Semantic matching (fastembed integration)
│ └── config.py # Intelligence configuration
└── memory/ # Memory and context capture
├── capture.py # Session capture
├── search.py # Memory search
└── notes.py # Memory note management
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.
- 2mo ago First seen · 158 lines · 1,670 tokens per session scan A 04ac0defe78d
Claude-Cortex AGENTS.md is an instructions file published in the GitHub repository NickCrew/Claude-Cortex (66 stars, last pushed 4mo ago), licensed MIT. It adds 1,670 tokens to every session, about $0.0067 per session on Opus 5.5. 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 2026-08-30.
Claude-Cortex AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| Claude-Cortex AGENTS.mdNickCrew/Claude-Cortex | Instructions file | 66 | 4mo ago | MIT | A | 1,670 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |