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MDA compatibility demonstration skill for Codex CLI. Compiled from compat/codex-cli/source.mda. Loading this skill confirms that an MDA-emitted SKILL.md is discovered and parsed by Codex CLI with the envelope subset of agentskills.io v1 fields honored.
Passed 19 of 20 test cases with the skill, and 7 of 20 without it.
and 15 more in the full report
14 fixed8 passed either way1 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.
To comply with spec section 06-2.1, what frontmatter name must be set if the skill directory is compat/codex-cli?
| Checked | Without skill | With skill |
|---|---|---|
| Output specifies codex-cli as the frontmatter name | Missed | Passed |
The instructions your model reads when the skill loads.
This skill exists to verify Codex CLI SKILL.md compatibility from an MDA-compiled output.
Three things are true if Codex CLI discovers and loads this skill:
SKILL.md parses under Codex CLI's loader (built on agentskills.io v1).name matches the package directory name (spec §06-2.1).name, description, allowed-tools) survives the round-trip from .mda source to compiled output to runtime ingest.Source: compat/codex-cli/source.mda. Compile: mda compile compat/codex-cli/source.mda --target SKILL.md --out-dir compat/codex-cli/build --integrity.
What this does NOT prove:
metadata.mda.* (the OpenAI docs do not document any such behavior, and we do not require it).triggers: arrays) are authored from MDA — they are not part of agentskills.io v1 and are out of MDA v1.0 scope.test cases passed, vs 7 / 20 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.