BC cloudflare-tunnel
Create and manage secure Cloudflare Tunnels using cloudflared. Expose local services to the internet safely, configure DNS routing, set up zero-trust access controls, and manage tunnel authentication without opening firewall ports.
As a process C 54/100 · Has gaps — weak spots: result and completion, when it triggers, failures and branches
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.
How to improve
- Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
- 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 · 4
✓ No critical or high findings
Medium and low: 4
-
medium Dangerous commands
cmd-persistenceSKILL.md:279Persistence mechanism (cron / launchd / scheduled task / autorun registry) (documentation of a security skill)<!-- ~/Library/LaunchAgents/com.cloudflare.tunnel.plist -->
security skill -
medium Dangerous commands
cmd-persistenceSKILL.md:303Persistence mechanism (cron / launchd / scheduled task / autorun registry) (documentation of a security skill)launchctl load ~/Library/LaunchAgents/com.cloudflare.tunnel.plist
security skill -
low Dangerous commands
cmd-privilegeSKILL.md:29Privilege escalation / world-writable permissions (documentation of a security skill)sudo mv clou…d64 /usr/local/bin/cloudflared
security skill -
low Dangerous commands
cmd-background-processSKILL.md:272Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable cloudflared-tunnel
security skill
Files scanned: 3. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
description-no-whendescription does not say WHEN to use the skill (no "use when")
Process rating: all ten parameters 54/100
- 0Result and completion. Does not say what the result is
- 0Failures and branches. Linear process with no failure handling
- 0Progress reporting. Says nothing while it works
- 20When it triggers. No condition that starts the skill
- 30Running it twice. 5 mutating operations with no state check
- 40Consistency. Frontmatter name (cloudflare-tunnel) differs from the folder (cloudflare-tunnel-manager)
- 70Inputs and preconditions. Inputs and preconditions are listed
- 100Tools and files. No external tools needed
- 100Steps. 13 steps
- 100Execution cost. Instruction body is 2248 tokens
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
- -4Absolute local paths (C:\Users, /home/…): not portable
- -2localhost URLs: will not work for another user
- +1No license
- +2Single-language instructions
- +3Description length 231: enough signal without eating the budget
- +4Structure: 17 headings
- +3Step-by-step instructions: 13 items
- +4Has examples (22 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 66.