itsaplan: Instructions file for Codex

AGENTS.md

itsaplan AGENTS.md is an instructions file for Codex, OpenCode from croffasia/itsaplan. It costs 3,843 tokens per session, scanned A, original, AGPL-3.0.

A set of AGENTS.md instructions for the croffasia/itsaplan repository. AGENTS.md files tell coding agents how to work within a project.

In plain words
What is it for?
Use it when making changes or writing documentation in that repository so the work follows its local instructions.
Why use it?
It gives agents the repository’s coding principles, writing style, rules, and layout guidance in one place.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is croffasia/itsaplan's own configuration. It tells Codex and OpenCode how to work on itsaplan itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything itsaplan configures →

About the project

It's a Plan is a self-hosted project management and issue-tracking system where people and AI agents organize work on projects, boards, cycles, and dashboards. Teams use it for software development and other work, with agents assigned roles and issues alongside human teammates through its API, webhooks, and MCP. The catalogue entries provide agent skills and instructions for working with the system.

croffasia/itsaplan · 2,005 stars · on GitHub · itsaplan.dev

Reuse

Borrowing it

Nothing to install: this file belongs to croffasia/itsaplan. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/croffasia/itsaplan/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/croffasia/itsaplan

Made for: Codex, OpenCode.

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 itsaplan AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/croffasia/itsaplan/agents-md/github.svg)](https://agentmods.dev/instructions/croffasia/itsaplan/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/croffasia/itsaplan/agents-md"><img src="https://agentmods.dev/badge/instructions/croffasia/itsaplan/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.

agentmods 80×15 button for itsaplan AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/croffasia/itsaplan/agents-md"><img src="https://agentmods.dev/badge/instructions/croffasia/itsaplan/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,843 This file is loaded in full into every session.
When invoked 3,843 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 unknown 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 5.1 $0.03843 $0.03843
Opus 5.5 $0.01537 $0.01537
Sonnet 5.5 $0.00769 $0.00769
Haiku 4.5 $0.00384 $0.00384

Measured 3d ago against content hash 0db0f6766f99, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

itsaplan 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 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.

AGENTS.md · 249 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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 Changed · +15 lines · +383 tokens per session 0db0f6766f99
  2. 4d ago Changed · -91 lines · -1,458 tokens per session 8cffb2b89df7
  3. 13d ago Changed · +11 lines · +300 tokens per session c73283fd31dd
  4. 1mo ago Changed · +6 lines · +137 tokens per session 9d43ec5cf6e6
  5. 1mo ago Changed 06125f6e6459
  6. 1mo ago Changed · +2 lines · +69 tokens per session 914be60dc1ff
  7. 1mo ago Changed · +1 lines · +34 tokens per session a618ca88af41
  8. 1mo ago Changed · +34 lines · +553 tokens per session 76f0fbae6c79
  9. 1mo ago Changed · +3 lines · +58 tokens per session 906578bebf7d
  10. 1mo ago First seen · 268 lines · 3,767 tokens per session scan A e5d318fbf954

Subscribe to this mod's changes

itsaplan AGENTS.md is an instructions file published in the GitHub repository croffasia/itsaplan (2,005 stars, last pushed today), licensed AGPL-3.0. It adds 3,843 tokens to every session, about $0.0154 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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