LukeandGitHub 7b086f550e Luke/codex readiness skills (#48)
## Overview

This PR adds two Codex readiness skills that evaluate repository
guidance quality
and end‑to‑end agentic execution. The unit test focuses on deterministic
checks + in‑session LLM evaluation of AGENTS.md/PLANS.md quality, while
the
integration test runs a full agentic loop and scores real code changes
and
build/test outcomes.

## 1) codex-readiness-unit-test (LLM Codex Readiness Unit Test)

### Goal

Validate that AGENTS.md and PLANS.md provide sufficient, usable guidance
using
deterministic checks plus in‑session LLM evaluation, and generate a
scored
JSON + HTML report.

### How it works

This skill builds a report from two pipelines: deterministic filesystem
checks
and in‑session LLM evaluation of AGENTS.md/PLANS.md guidance. It writes
a
timestamped run directory with evidence, LLM results, and a scored
JSON/HTML
report; in optional execute mode it runs a user‑approved plan and
includes
execution logs in scoring. JSON outputs are strictly validated with a
retry +
json‑fix loop.

## 2) codex-readiness-integration-test (LLM Codex Readiness Integration
Test)

### Goal

Validate real agentic execution quality by running Codex CLI against the
repo,
executing an approved change prompt, and scoring results with evidence +
LLM
evaluation.

### How it works

This skill runs an end‑to‑end agentic execution against the repo using
Codex
CLI, then executes a build/test plan and scores the run from evidence
plus LLM
evaluation. It spins up the Codex session by launching the CLI as a
subprocess
with HOME/XDG_CACHE_HOME pointed at the repo‑local .codex-home, using
the
approved prompt.json (change prompt + agentic_loop settings) so the CLI
reads
AGENTS.md and operates in the repo. It requires a repo‑local login,
always
runs in execute mode, and writes results to a timestamped run directory
with
agentic logs, LLM results, and a summary.
2026-01-22 10:54:33 -08:00
2026-01-22 10:54:33 -08:00

Agent Skills

Agent Skills are folders of instructions, scripts, and resources that AI agents can discover and use to perform at specific tasks. Write once, use everywhere.

Codex uses skills to help package capabilities that teams and individuals can use to complete specific tasks in a repeatable way. This repository catalogs skills for use and distribution with Codex.

Learn more:

Installing a skill

Skills in .system are automatically installed in the latest version of Codex.

To install curated or experimental skills, you can use the $skill-installer inside Codex.

Curated skills can be installed by name (defaults to skills/.curated):

$skill-installer gh-address-comments

For experimental skills, specify the skill folder. For example:

$skill-installer install the create-plan skill from the .experimental folder

Or provide the GitHub directory URL:

$skill-installer install https://github.com/openai/skills/tree/main/skills/.experimental/create-plan

After installing a skill, restart Codex to pick up new skills.

License

The license of an individual skill can be found directly inside the skill's directory inside the LICENSE.txt file.

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