AB Nginx
Configures and debugs nginx: reverse proxy, load balancing, SSL/TLS termination, caching, redirects, and static file serving. Use when writing or reviewing nginx.conf, server blocks, locations, upstreams, or proxy_pass, when a site behind nginx throws 502, 504, 413, 403, or a redirect loop, when WebSockets, SSE, or gRPC break through the proxy, when a certificate works in curl but warns in browsers, when requests hit the wrong location or the backend sees the wrong path, when tuning workers, buffers, gzip, or proxy cache, when rate limiting or blocking abuse, when proxying raw TCP/UDP, or when nginx runs in Docker or Kubernetes. Not for certificate issuance or renewal (ACME, Let's Encrypt) — that is the ssl skill.
As a process B 66/100 · Nearly there — weak spots: inputs and preconditions
How to improve
- 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 · 0
✓ No critical or high findings
Files scanned: 16. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
name-formatname should be kebab-case (lowercase letters, digits, hyphens) - note
frontmatter-keyunknown frontmatter key "slug" - note
frontmatter-keyunknown frontmatter key "homepage" - note
frontmatter-keyunknown frontmatter key "changelog"
Process rating: all ten parameters 66/100
- 0Inputs and preconditions. Does not say what the process needs to start
- 50When it triggers. No condition that starts the skill
- 60Tools and files. Uses tools (web) that frontmatter does not declare
- 60Result and completion. Output format stated, no completion criterion
- 70Execution cost. Instruction body is 4316 tokens
- 85Steps. 73 steps, 1 vague phrases
- 100Failures and branches. 6 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 17 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
- +1No license
- +2Single-language instructions
- +4Description says when NOT to use the skill
- +3Description length 723: enough signal without eating the budget
- +4Structure: 17 headings
- +3Step-by-step instructions: 73 items
- +3Output format is stated explicitly
- +4Has examples (3 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 83.