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Guide for creating effective skills.
Passed 14 of 22 test cases with the skill, and 11 of 22 without it.
and 1 more in the full report
4 fixed10 passed either way7 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.
I am creating a skill for AWS S3 bucket provisioning named s3-bucket-provisioner. Where exactly should the definition file be saved relative to the workspace root, and what must the name frontmatter property be?
| Checked | Without skill | With skill |
|---|---|---|
| The frontmatter name property matches the directory name s3-bucket-provisioner exactly | Passed | Passed |
| The file location is specified as skills/s3-bucket-provisioner/SKILL.md | Missed | Passed |
The instructions your model reads when the skill loads.
Use this skill when defining or updating reusable Codex skills.
skills/ at the workspace root.skills/<skill-id>/ and save SKILL.md plus any helper files there.runtime/harnesses/src/embedded-skills/.SKILL.md format:
name: <skill-id> (must exactly match the directory name under skills/)description: <one-line summary>---
name: <skill-id>
description: <one-line summary>
---
# <Readable Skill Title>
## When To Use
- ...
## Workflow
1. ...
2. ...
## Examples
- ...
SKILL.md concise; use references/scripts only when needed.test cases passed, vs 11 / 22 without
Published skills whose descriptions closely match this one, with their headline benchmark lift.
More skills from the same source and nearby in the registry, with their headline benchmark lift.