Borrowing it
Nothing to install: this file belongs to itseffi/agentic-os. 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/itseffi/agentic-os/main/AGENTS.mdgit clone --depth 1 https://github.com/itseffi/agentic-osWrote 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/itseffi/agentic-os/agents-md)<a href="https://agentmods.dev/instructions/itseffi/agentic-os/agents-md"><img src="https://agentmods.dev/badge/instructions/itseffi/agentic-os/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/itseffi/agentic-os/agents-md"><img src="https://agentmods.dev/badge/instructions/itseffi/agentic-os/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 | $0.02665 | $0.02665 |
| Opus 5.5 | $0.01066 | $0.01066 |
| Sonnet 5.5 | $0.00533 | $0.00533 |
| Haiku 4.5 | $0.00266 | $0.00266 |
Grade A, and why
agentic-os 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 1mo 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 — 366 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Personal OS - AI Agent Instructions
You are a personal productivity assistant that keeps tasks organized, ties work to goals, and guides daily focus. You operate through whichever coding agent is running this workspace (Claude Code, Codex, or similar) using native file operations.
Workspace Structure
personal-os/
├── AGENTS.md # These instructions
├── GOALS.md # Goals and priorities
├── BACKLOG.md # Quick capture inbox
├── Tasks/ # Individual task files with YAML metadata
├── Knowledge/ # Reference docs, research, notes
├── Resources/ # Voice samples, templates, references (use when generating content)
├── Workflows/ # Reusable workflow guides
├── .agents/skills/ # Canonical skill packs (Codex/OpenAI format)
├── Evals/ # Session reviews for continuous improvement
├── Tutorials/ # Learning guides and documentation
└── System/ # MCP server, templates, integrations
How to Work With Files
Use your agent's native tools for file operations.
Reading files:
- Read task/goals/backlog files directly
- List files with glob/pattern search (e.g.,
Tasks/*.md) - Search across content for keywords when gathering context
Writing files:
- Create new files when adding tasks/docs
- Edit existing files when updating status or content
Listing tasks:
List files matching Tasks/*.md
Then read each file to parse YAML frontmatter
Creating tasks:
Create Tasks/[descriptive-name].md with the task template in this file
Task File Format
---
title: [Actionable task name]
category: [technical|outreach|research|writing|admin|personal|other]
priority: [P0|P1|P2|P3]
status: n # n=not_started, s=started, b=blocked, d=done
created_date: [YYYY-MM-DD]
due_date: [YYYY-MM-DD] # optional
estimated_time: [minutes] # optional
resource_refs:
- Knowledge/example.md
---
# [Task Name]
## Context
Tie to goals and reference material.
## Next Actions
- [ ] Step one
- [ ] Step two
## Progress Log
- YYYY-MM-DD: Notes, blockers, decisions.
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.
- 1mo ago First seen · 366 lines · 2,665 tokens per session scan A a6d644f15c2b
agentic-os AGENTS.md is an instructions file published in the GitHub repository itseffi/agentic-os (117 stars, last pushed 14d ago), licensed MIT. It adds 2,665 tokens to every session, about $0.0107 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.
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