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MDA compatibility demonstration skill for OpenCode. Compiled from compat/opencode/source.mda. Loading this skill confirms that an MDA-emitted SKILL.md is discovered and parsed by OpenCode with the envelope subset of fields documented at opencode.ai/docs/skills/ honored.
Passed 18 of 21 test cases with the skill, and 11 of 21 without it.
and 9 more in the full report
8 fixed11 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
How many standard top-level fields are documented for OpenCode frontmatter compatibility, excluding MDA extensions?
| Checked | Without skill | With skill |
|---|---|---|
| Identifies exactly 5 documented top-level fields | Missed | Passed |
The instructions your model reads when the skill loads.
This skill exists to verify OpenCode SKILL.md compatibility from an MDA-compiled output.
Three things are true if OpenCode discovers and loads this skill:
SKILL.md parses under OpenCode's loader.name matches the package directory name (spec §06-2.1 and OpenCode's own naming rules).name, description, license, compatibility, metadata) plus MDA's integrity survive the round-trip from .mda source to compiled output to runtime ingest.Source: compat/opencode/source.mda. Compile: mda compile compat/opencode/source.mda --target SKILL.md --out-dir compat/opencode/build --integrity.
What this does NOT prove:
metadata.mda.* (the OpenCode docs do not document any such behavior, and we do not require it; per docs "unknown frontmatter fields are ignored", so passthrough is safe).allowed-tools is honored — OpenCode's public docs do not list this field. MDA may emit it (agentskills.io v1 envelope), but OpenCode's behavior on it is undocumented.test cases passed, vs 11 / 21 without
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