threadnote: Instructions file for Codex

AGENTS.md

threadnote AGENTS.md is an instructions file for Codex, OpenCode from Kashkovsky/threadnote. It costs 1,898 tokens per session, scanned A, original, AGPL-3.0.

A set of development instructions for Threadnote, a software project. It guides how work and testing should be done in that project.

In plain words
What is it for?
It helps with Threadnote development, effect-aware testing, property-based testing, and letting pull-request checks run the complete test suite.
Why use it?
It gives contributors a shared way to work, test changes, and use Threadnote while developing it.

Instructions file for CodexOpenCode

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

This is Kashkovsky/threadnote's own configuration. It tells Codex and OpenCode how to work on threadnote 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 threadnote configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Kashkovsky/threadnote. 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/Kashkovsky/threadnote/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/Kashkovsky/threadnote

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 threadnote AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/kashkovsky/threadnote/agents-md"><img src="https://agentmods.dev/badge/instructions/kashkovsky/threadnote/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,898 This file is loaded in full into every session.
When invoked 1,898 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 $0.01898 $0.01898
Opus 5.5 $0.00759 $0.00759
Sonnet 5.5 $0.00380 $0.00380
Haiku 4.5 $0.00190 $0.00190

Measured 26d ago against content hash e8b11ecdc3b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

threadnote 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 26d 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 · 132 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. 26d ago Changed · +15 lines · +197 tokens per session e8b11ecdc3b8
  2. 1mo ago Changed · +1 lines · +18 tokens per session e48a9c581fa5
  3. 1mo ago Changed · +2 lines · +27 tokens per session c2cac1ea7b4a
  4. 1mo ago Changed · +7 lines · +89 tokens per session b5fd55ac18d4
  5. 1mo ago Changed · +5 lines · +85 tokens per session b92870de6663
  6. 1mo ago First seen · 102 lines · 1,482 tokens per session scan A e19dc4e9fccc

Subscribe to this mod's changes

threadnote AGENTS.md is an instructions file published in the GitHub repository Kashkovsky/threadnote (24 stars, last pushed 26d ago), licensed AGPL-3.0. It adds 1,898 tokens to every session, about $0.0076 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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