DD autonomous-builder
Full-stack software development agent for design, implementation, testing, and deployment. Use when the user explicitly asks for end-to-end project creation, feature development, bug fixing, or code refactoring.
Full-stack software development agent for design, implementation, testing, and deployment.
As a process D 47/100 · Unfinished process — References files that are not bundled: references/testing-patterns.md
What is at stake
Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.
Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.
The skill contains commands that delete files, rewrite disks or execute code fetched from the network. The agent may run them without asking if it believes the instructions require it.
Replace destructive commands with safe equivalents that ask for confirmation, scope them to one folder, and stop piping curl into a shell: pin a version and a checksum.
Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.
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.
Narrow allowed-tools and the variable list to the minimum; replace binaries with readable sources or scripts.
How to improve
- The SKILL.md body is over 5,000 tokens: move reference detail into references/ and load it when needed.
- The text references files that are not there: add them or drop the references.
- 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 · 7
✓ No critical or high findings
Medium and low: 7
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medium Dangerous commands
cmd-execpolicy-bypassreferences/index.md:105Runs PowerShell with execution policy bypassedpowershell -ExecutionPolicy Bypass -File .builder\auto…ps1
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medium Dangerous commands
cmd-destructive-fsreferences/multi-layer-security.md:203Destructive filesystem command (wipes root/home/drive) (code comment; documentation of a security skill)r"rm\s+-rf\s+/", # rm -rf /
commentsecurity skill -
medium Dangerous commands
cmd-destructive-fsreferences/multi-layer-security.md:204Destructive filesystem command (wipes root/home/drive) (code comment; documentation of a security skill)r"rm\s+-rf\s+~", # rm -rf ~
commentsecurity skill -
medium Broad scope
meta-broad-allowed-toolsSKILL.md:1Broad tool permissions pre-approved: Bashallowed-tools: Read Write Edit Bash Glob Grep WebFetch WebSearch Skill Task ToolSearch mcp__ide__executeCode mcp__ide__getDiagnostics
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low Dangerous commands
cmd-destructive-fs-scopedreferences/multi-layer-security.md:205Destructive command on a partition / current directory (normal in admin docs; verify the target) (code comment; documentation of a security skill)r"rm\s+-rf\s+\.\.", # rm -rf ..
commentsecurity skill -
low Dangerous commands
cmd-destructive-fs-scopedreferences/multi-layer-security.md:206Destructive command on a partition / current directory (normal in admin docs; verify the target) (code comment; documentation of a security skill)r"rm\s+-rf\s+\*", # rm -rf *
commentsecurity skill -
low Risky intent
intent-offensive-securityreferences/multi-layer-security.md:534Offensive-security / dual-use content (legitimate for authorised testing; review intended use)- [ ] No privilege escalation
Files scanned: 25. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
body-longSKILL.md body ≈ 9761 tokens (recommended < 5000); move details to references/ - warning
missing-refreference to a missing file: references/testing-patterns.md
Process rating: all ten parameters 47/100
- 0Tools and files. 1 referenced file(s) missing: references/testing-patterns.md
- 0Result and completion. Does not say what the result is
- 30Running it twice. 39 mutating operations with no state check
- 40Execution cost. Instruction body is 9761 tokens: crowds the task out of the window
- 50Failures and branches. 0 branches, has a failure section
- 60Steps. 142 steps, 4 vague phrases
- 70Inputs and preconditions. Inputs and preconditions are listed
- 100When it triggers. States when to use and when not to
- 100Consistency. Name and required fields are in place
- 100Progress reporting. Reports progress
- medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing
- low 14 top-level sections: this looks like several domains in one skill
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 211: enough signal without eating the budget
- +4Structure: 60 headings
- +3Step-by-step instructions: 142 items
- +4Has examples (41 code blocks)
- +4Reference files are cited in the instructions (13 of 15)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 72.