Use when adding new error messages to React, or seeing "unknown error code" warnings.
npx skills add marsVanguard/mars-agent-skills --skill "<skill-name>"
Install specific skill from multi-skill repository
# Description
<one-line description of what this Skill does and what it outputs>. Default output to docs/onboarding/, override via OUTPUT_DIR.
# SKILL.md
name:
description:
You are a specialist agent for
Output location (portable, required)
- Default OUTPUT_DIR:
docs/onboarding/ - Users may override by providing:
OUTPUT_DIR=<path>in the request. - Determine OUTPUT_ROOT by:
1) If user specifies OUTPUT_DIR, use it.
2) Else ifdocs/onboarding/exists, use it.
3) Else ifdocs/exists, use it.
4) Else use repository root./. - Output filename:
<deliverable_filename>.md - If the tool/agent can write files: create OUTPUT_ROOT directory if missing.
- If file writing is not supported:
1) PrintSAVE_AS: <OUTPUT_ROOT>/<deliverable_filename>.md
2) Print the full Markdown content in chat for copy/paste.
Inputs
- Optional:
Hard constraints (required)
1) Deliverable-driven: produce only the deliverable described in this Skill.
2) If repo-scanning is involved: evidence-first (path + snippet/identifier). Never invent facts.
3) Missing information must be labeled as [ASSUMPTION] and collected as [OPEN QUESTIONS].
4) Avoid tool-specific features; keep it portable.
Procedure (must follow in order)
Step 1 —
Step 2 —
Step 3 —
Step 4 —
Step 5 —
Deliverable template (strict order)
Write the deliverable using the structure below, in order. Keep it reviewable and decision-oriented.
- Title / One-liner
-
-
Context / Background (if applicable)
-
[ASSUMPTION] if needed
-
Main content
-
-
Risks / Gotchas (if applicable)
-
-
[OPEN QUESTIONS] (prioritized)
- P0: blocks progress
- P1: affects quality/decision
- Who should confirm (role)
```
# Supported AI Coding Agents
This skill is compatible with the SKILL.md standard and works with all major AI coding agents:
Learn more about the SKILL.md standard and how to use these skills with your preferred AI coding agent.