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BD starling-home-hub

Controls Nest and Google Home smart home devices via the Starling Home Hub's local REST API. Supports thermostats, cameras, Nest Protects, Nest × Yale locks, temperature sensors, home/away control, and Nest weather service. Use this skill when managing Nest/Google Home devices through Starling Home Hub — reading device status, setting temperatures, getting camera snapshots, locking/unlocking doors, checking smoke/CO alerts, and toggling home/away mode.

modbender/skill-library-mcp Agent Skills author: modbender MIT 3 files · 1 script body ≈ 1 468 tokens Open the sourcegithub.com↗ analyzed 2 d ago

Controls Nest and Google Home smart home devices via the Starling Home Hub's local REST API.

As a process D 49/100 · Unfinished process — weak spots: result and completion, when it triggers, inputs and preconditions

IntegrationSoftware developmentAI and agentsWriting and documentstype and topics are labelled automatically from the skill text
Runs in: OpenClaw 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) Goose OpenCode
JSON
Technical rating
B
87/100
safety, quality, tests
Safety 60%
85
Quality 40%
89
Run on models
none yet
Process rating
D
49/100
Unfinished process
Result and completion w 14
0
Inputs and preconditions w 11
0
Progress reporting w 2
0
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.

Exfiltration 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 instructions or scripts send data out: environment variables, keys, file contents, chat history. You may never notice, because the agent performs the upload as "part of the task".

For the author

If the upload is not needed for the task, remove it: catalogs flag such skills and delist them. If it is needed, name the destination explicitly, say what leaves the machine, and give the user a switch.

How to improve

    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 · 3

    ✓ No critical or high findings

    Medium and low: 3
    • medium Exfiltration net-credential-use scripts/starling.sh:131
      Credential used in a network call (verify the destination is the intended service)
      body=$(curl -sfS -w '\n%{http_code}' "${CURL_TIMEOUT[@]}" ${CURL_EXTRA[@]+"${CURL_EXTRA[@]}"} "$@" "${BASE_URL}${path}?key=${API_KEY}" 2>&1) || true
    • medium Exfiltration net-credential-use scripts/starling.sh:143
      Credential used in a network call (verify the destination is the intended service)
      curl -sfS "${CURL_TIMEOUT[@]}" ${CURL_EXTRA[@]+"${CURL_EXTRA[@]}"} "$@" "${BASE_URL}${path}?key=${API_KEY}" || {
    • medium Exfiltration net-credential-use scripts/starling.sh:152
      Credential used in a network call (verify the destination is the intended service)
      body=$(curl -sfS -w '\n%{http_code}' "${CURL_TIMEOUT[@]}" ${CURL_EXTRA[@]+"${CURL_EXTRA[@]}"} "$@" "${BASE_URL}${path}?key=${API_KEY}&${params}" 2>&1) || true

    Files scanned: 3. Evidence is masked. Grey chips explain why severity was lowered.

    Against the Agent Skills spec

    • note frontmatter-key unknown frontmatter key "homepage"
    • note frontmatter-key unknown frontmatter key "env"

    Process rating: all ten parameters 49/100

    • 0Result and completion. Does not say what the result is
    • 0Inputs and preconditions. Does not say what the process needs to start
    • 0Progress reporting. Says nothing while it works
    • 20When it triggers. No condition that starts the skill
    • 50Failures and branches. 0 branches, has a failure section
    • 60Tools and files. Uses tools (web) that frontmatter does not declare
    • 85Steps. 29 steps, 1 vague phrases
    • 100Consistency. Name and required fields are in place
    • 100Execution cost. Instruction body is 1468 tokens
    • 100Running it twice. Mutating operations check current state
    • medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing

    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)
    • +3Output format is not stated: the model decides each time
    • +1No license
    • +2Single-language instructions
    • +3Description length 456: enough signal without eating the budget
    • +4Structure: 24 headings
    • +3Step-by-step instructions: 29 items
    • +4Has examples (14 code blocks)
    • +4Reference files are cited in the instructions (1 of 1)
    • +3All 1 scripts are documented

    Quality base 70; lint remarks subtract, signals add up to 100. Result: 89.