Mmcp.market

build-test skill

by nexu-io·nexu-io/open-design·98k stars·Apache-2.0

Run the project's build / typecheck / lint / test commands and emit the build.passing + tests.passing signals devloop convergence reads.

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Is the build-test skill safe?

Clean: nothing in its files matched our rules. We read 2 files in the folder on 2026-09-28.

No findings.

Install the build-test skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description.

git clone --depth 1 https://github.com/nexu-io/open-design.git /tmp/open-design
mkdir -p ~/.claude/skills
cp -r /tmp/open-design/plugins/_official/atoms/build-test ~/.claude/skills/build-test
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

Build test

Spec §20.2 / §22.4: the "subjective critique-theater panel" is not enough on its own — a code-migration / tune-collab run must prove the build still passes. This atom shells out to the project's declared test commands and emits structured signals the devloop's until evaluator reads.

Inputs

plan.md's targetStack block).

  • The active target stack (recorded in code/index.json +

testCommand='pnpm test').

  • The user's optional override (od plugin run --input

Default commands by framework

Output

project-cwd/
└── critique/
    ├── build-test.json   # { build: 'passing' | 'failing', tests: 'passing' | 'failing' | 'skipped', durationMs, commandsRun: [...], failures: [...] }
    └── build-test.log    # raw stdout / stderr (truncated to the runner's logBudgetBytes limit, default 1 MiB)

The atom emits two signals the devloop reads:

  • build.passing: boolean — the typecheck command exited 0.
  • tests.passing: boolean — the test command exited 0.

Plus the legacy critique.score so existing pipelines that read the score keep working: 5 when both pass, 3 when only build passes, 1 when both fail.

Convergence

Pipelines wire the atom into a devloop:

{
  "id": "verify",
  "atoms": ["patch-edit", "build-test"],
  "repeat": true,
  "until": "(build.passing && tests.passing) || iterations >= 8"
}

Anti-patterns the prompt fragment forbids

always runs after patch-edit, and only when plan.steps's current step is in completed state).

  • Running tests on a partially-edited working tree (the atom

the rewrite-plan ownership rule.

  • Suppressing test failures by changing test files; that violates
  • Setting tests: 'skipped' without a non-empty reason field.

Status

Implemented by the daemon runner in apps/daemon/src/plugins/atoms/build-test.ts. It executes the configured build and test commands, bounds runtime and captured logs, and persists the report and log outputs above.

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