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BF test-native-extension

Validate a third-party control repo across four automated layers plus one printed manual recipe. Layer 1 asserts native-source structure (Android getName() and iOS +moduleName to manifest nativeModule; @ReactMethod / RCT_EXPORT_METHOD to methods; no @ReactModule) plus load/init readiness (ReactPackage public no-arg constructor, iOS [cls new] no-arg init, requiresMainQueueSetup NO, non-throwing eager construction), so launch-time crashes surface before any build. Layer 2 validates the committed `./manifest.json` against the ppmplugin-format rules. Layer 3 asserts request/response/error-code agreement across native and PCF. Layer 4 compiles the PCF (auto-skipped if absent). Layer 5 prints a device end-to-end recipe. Native compile belongs to /build-android-binary and /build-ios-binary — this is the cheap structural pre-flight before those slow builds. Reports pass/fail per layer with a fix hint and updates .extension-state.md.

microsoft/power-platform-skills Agent Skills author: microsoft 1 file body ≈ 15 762 tokens Open the sourcegithub.com↗ analyzed 2 h ago

Validate a third-party control repo across four automated layers plus one printed manual recipe.

As a process F 53/100 · Will not run — References files that are not bundled: ../build-android-binary/SKILL.md, ../build-ios-binary/SKILL.md, ../../shared/ppmplugin-format.md

AnalyzerSoftware developmentData and analyticstype and topics are labelled automatically from the skill text
Runs in: Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) OpenClaw Goose OpenCode
JSON
Technical rating
B
75/100
safety, quality, tests
Safety 60%
95
Quality 40%
45
Run on models
none yet
Process rating
F
53/100
Will not run
References files that are not bundled: ../build-android-binary/SKILL.md, ../build-ios-binary/SKILL.md, ../../shared/ppmplugin-format.md
Tools and files w 18
0
Result and completion w 14
0
Execution cost w 6
40
the three weakest of ten parameters · all ten

What is at stake

Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.

Broad scope medium severity

Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.

If you install

The skill asks for more than the task needs: broad tool access, credential environment variables, binaries. Every extra permission widens the damage from a mistake or a compromise.

For the author

Narrow allowed-tools and the variable list to the minimum; replace binaries with readable sources or scripts.

How to improve

  1. Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
  2. The SKILL.md body is over 5,000 tokens: move reference detail into references/ and load it when needed.
  3. The text references files that are not there: add them or drop the references.
For the model run — optional
  • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 1

✓ No critical or high findings

Medium and low: 1
  • medium Broad scope meta-broad-allowed-tools SKILL.md:1
    Broad tool permissions pre-approved: Bash
    allowed-tools: Read Write Edit Bash Glob Grep AskUserQuestion Skill

Files scanned: 1. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning description-no-when description does not say WHEN to use the skill (no "use when")
  • warning body-long SKILL.md body ≈ 15762 tokens (recommended < 5000); move details to references/
  • warning missing-ref reference to a missing file: ../build-android-binary/SKILL.md
  • warning missing-ref reference to a missing file: ../build-ios-binary/SKILL.md
  • warning missing-ref reference to a missing file: ../../shared/ppmplugin-format.md
  • warning missing-ref reference to a missing file: ../../shared/shared-instructions.md
  • warning missing-ref reference to a missing file: ../../shared/naming-conventions.md
  • warning missing-ref reference to a missing file: ../../shared/prereq-check.md
  • warning missing-ref reference to a missing file: ../generate-ppmplugin-manifest/SKILL.md
  • warning missing-ref reference to a missing file: ../audit-ppmplugin/SKILL.md
  • note edit-residue the text marks something as outdated (lines 395): check that old rules are not kept next to new ones — the full check reads the text for contradictions

Process rating: all ten parameters 53/100

Will not run. References files that are not bundled: ../build-android-binary/SKILL.md, ../build-ios-binary/SKILL.md, ../../shared/ppmplugin-format.md
  • 0Tools and files. 8 referenced file(s) missing: ../build-android-binary/SKILL.md, ../build-ios-binary/SKILL.md, ../../shared/ppmplugin-format.md
  • 0Result and completion. Does not say what the result is
  • 40Execution cost. Instruction body is 15762 tokens: crowds the task out of the window
  • 50When it triggers. No condition that starts the skill
  • 70Inputs and preconditions. Inputs and preconditions are listed
  • 85Steps. 55 steps, 3 vague phrases
  • 100Failures and branches. 3 branches, has a failure section
  • 100Consistency. Name and required fields are in place
  • 100Running it twice. Mutating operations check current state
  • 100Progress reporting. Reports progress
  • medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing
  • low 15 top-level sections: this looks like several domains in one skill
  • low The response is described with custom markup (30 tags): a typed call is more reliable

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +5Description has no quoted example phrases that should trigger the skill
  • +4Description does not say when NOT to use the skill (false activations)
  • +3Description length 938: 120–800 characters recommended
  • +3Output format is not stated: the model decides each time
  • -213 emoji in the instructions: noise for the model
  • +1No license
  • +2Single-language instructions
  • +4Structure: 37 headings
  • +3Step-by-step instructions: 55 items
  • +4Has examples (17 code blocks)

Quality base 70; lint remarks subtract, signals add up to 100. Result: 45.