SkillOpt: Instructions file for Codex

AGENTS.md

SkillOpt AGENTS.md is an instructions file for Codex, OpenCode from mitkox/SkillOpt. It costs 505 tokens per session, scanned A, original, MIT.

Project instructions for SkillOpt, a tool that improves skill documents and agent prompts rather than training the model itself.

In plain words
What is it for?
Use them to run SkillOpt experiments, evaluate or optimize instructions, and work with its local benchmark and backend setup.
Why use it?
They keep experiments, documentation, examples, and repository practices consistent, especially when using a local AI service.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

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.

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README.md
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Your own site
<a href="https://agentmods.dev/instructions/mitkox/skillopt/agents-md"><img src="https://agentmods.dev/badge/instructions/mitkox/skillopt/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 SkillOpt AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/mitkox/skillopt/agents-md"><img src="https://agentmods.dev/badge/instructions/mitkox/skillopt/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 505 This file is loaded in full into every session.
When invoked 505 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 original 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 $0.00505 $0.00505
Opus 5.5 $0.00202 $0.00202
Sonnet 5.5 $0.00101 $0.00101
Haiku 4.5 $0.00051 $0.00051

Measured 2mo ago against content hash e0f01b5c8e03, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

SkillOpt 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.

AGENTS.md · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent instructions for SkillOpt

Project identity

  • Treat this repository as a local-first, open-source SkillOpt fork.
  • SkillOpt optimizes skill documents / system prompts, not model weights.
  • Prefer examples and smoke tests that work against a local OpenAI-compatible backend.

Default example workflow

When you need a runnable example, default to the bundled DotNetDebug setup:

  • config: configs/dotnetdebug/local_mitko.yaml
  • sample data: data/dotnetdebug/tasks.json
  • seed skill: skillopt/envs/dotnetdebug/skills/initial.md
  • output root: outputs/dotnetdebug_smoke

Use small validation runs before suggesting larger experiments. Prefer overrides like:

--cfg-options \
  train.num_epochs=1 \
  train.batch_size=2 \
  gradient.minibatch_size=2 \
  gradient.analyst_workers=1 \
  env.workers=1 \
  env.limit=2

Documentation expectations

  • Put the local AI path first in docs and examples.
  • Mention cloud backends only as optional alternatives unless the task is explicitly cloud-specific.
  • When referring to local inference, prefer openai_compat and http://localhost:8000/v1 unless the user says otherwise.
  • Keep the README aligned with .env.example and the shipped configs.

Repo hygiene

  • Never commit secrets, .env files, private notes, personal scratch files, local outputs, or benchmark dumps.
  • Keep private markdown in ignored files such as *.local.md or *.secret.md.
  • Keep IDE state, virtual environments, logs, and generated outputs out of git.
  • Before publishing, verify that .gitignore still covers local-only files.

Code and config conventions

  • Prefer structured config sections: model, train, gradient, optimizer, env.
  • Reuse repo-native configs instead of inventing ad hoc command lines when possible.
  • If adding a new backend, update the backend modules, config mapping, runtime dispatch, docs, and env template together.
  • If adding a new benchmark, update the env package, config, CLI entry points, and user-facing docs together.

Read the full file on GitHub · 54 lines

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. 2mo ago First seen · 54 lines · 505 tokens per session scan A e0f01b5c8e03

Subscribe to this mod's changes

SkillOpt AGENTS.md is an instructions file published in the GitHub repository mitkox/SkillOpt (86 stars, last pushed 5mo ago), licensed MIT. It adds 505 tokens to every session, about $0.0020 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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