CtrlK
BlogDocsLog inGet started
Tessl Logo
SkillPublic

persistent-localhost

Manage persistent dev servers, APIs, and other local processes on a port using macOS LaunchAgents. Use when starting, stopping, restarting, inspecting, or troubleshooting local servers that should survive shell exit and restart after crashes.

Quality

92%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide
SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

93%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A tight, highly actionable skill body that delegates work to one real script and avoids over-explanation. Its only soft spot is workflow_clarity, where verification lives inside the script rather than as explicit Claude-driven checkpoints.

Suggestions

Add one explicit Claude-side verification step after start (e.g., 'Confirm the printed URL= responds before reporting success') to make the validation checkpoint visible in the workflow rather than only inside the script.

Make the post-stop/post-restart verification explicit (e.g., re-run `status myproj` to confirm the desired state) so the destructive operations have a visible feedback loop.

DimensionReasoningScore

Conciseness

Lean and efficient with no padding: it never explains what launchd/LaunchAgents are and every line is a command, rule, or actionable note that assumes Claude's competence.

5 / 5

Actionability

Fully executable, copy-paste-ready commands with concrete flags ('start --name myproj --port 5111 --cmd "./bin/serve"') covering the common start/stop/restart/logs/status cases.

5 / 5

Workflow Clarity

A clear numbered sequence (list -> start -> inspect/restart/logs/stop) with built-in validation (returns only after the port listens or fails with 20 log lines) and an error-recovery fallback, but the validation is delegated to the script rather than stated as explicit Claude-side checkpoints.

4 / 5

Progressive Disclosure

A short, well-organized body (~45 lines) with clearly signaled sections and a single real bundle file (scripts/persistent-localhost.sh) referenced once and resolved relative to SKILL.md, fitting the simple-skill exception.

5 / 5

Total

19

/

20

Passed

Description

87%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, third-person description that concretely states capabilities and gives explicit 'Use when...' trigger guidance with natural phrasing. Minor generic framing ('Manage') and a few missing synonyms keep specificity and trigger_term_quality just below maximum.

DimensionReasoningScore

Specificity

Names the domain ('persistent dev servers, APIs, and other local processes on a port using macOS LaunchAgents') and lists several concrete actions ('starting, stopping, restarting, inspecting, or troubleshooting'), but the leading 'Manage' is generic, leaving minor coverage gaps relative to the comprehensive anchor.

4 / 5

Completeness

Explicitly answers both what ('Manage persistent dev servers... using macOS LaunchAgents') and when ('Use when starting, stopping, restarting, inspecting, or troubleshooting local servers that should survive shell exit and restart after crashes') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Good natural keyword coverage ('starting, stopping, restarting, inspecting, troubleshooting local servers', 'survive shell exit', 'restart after crashes') that users would plausibly say, though a few common synonyms are absent.

4 / 5

Distinctiveness Conflict Risk

A clear niche (persistent localhost servers via macOS LaunchAgents/surviving shell exit) with distinct triggers and minimal overlap risk against other skills.

5 / 5

Total

18

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

davidondrej/skills

Path

skills/ops-and-setup/persistent-localhost/SKILL.md

Reviewed

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.