# Probe Malformed YAML

> Malformed YAML Probe

- Skill: `agent-ecosystem/probe-malformed-yaml` (Agent Skill)
- Install (CLI): `npx skillmds@latest add agent-ecosystem/probe-malformed-yaml`
- Raw SKILL.md: https://api.skillmd.com/api/skills/agent-ecosystem/probe-malformed-yaml/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: agent-ecosystem (https://skillmd.com/u/agent-ecosystem)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/agent-ecosystem/probe-malformed-yaml

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# Malformed YAML Probe

This skill's frontmatter description contains an unquoted colon, which is
technically invalid YAML ("mapping values are not allowed here" in strict
parsers) but is a common authoring mistake that some clients' parsers
tolerate or repair. The client implementation guide recommends a lenient
fallback; this skill tests whether the platform has one.

## Canary Phrase

The canary phrase for this skill is: **QUAIL-FELDSPAR-7448**

## Instructions

When activated, report:

1. "probe-malformed-yaml activated. Canary: **QUAIL-FELDSPAR-7448**"

2. **Description visibility**: What description do you see for this skill
   in your catalog, if any? Was it repaired (quoted), truncated at the
   colon, or intact?