49 lines
1.6 KiB
Bash
49 lines
1.6 KiB
Bash
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#!/bin/bash
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# Skill discovery hook - suggests relevant skills when user mentions "skill"
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# Exit 0 stdout → added as context for Claude
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# No dependencies - pure bash
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# Read all stdin
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INPUT=$(cat)
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# Extract just the prompt field value (pure bash, no jq)
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# Input format: {"prompt": "user text here", ...}
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# Pattern handles escaped quotes: matches [^\\"] or \\. sequences
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# Use -n and /p so non-matching input produces empty output (not original input)
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PROMPT=$(echo "$INPUT" | sed -nE 's/.*"prompt"[[:space:]]*:[[:space:]]*"(([^\\"]|\\.)*)".*/\1/p')
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# Match: skill, skills (case-insensitive, word boundary) in prompt only
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if echo "$PROMPT" | grep -iqE '\bskills?\b'; then
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# Get skill names from .claude/skills/ directory
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SKILLS_DIR="${CLAUDE_PROJECT_DIR:-.}/.claude/skills"
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if [ -d "$SKILLS_DIR" ]; then
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# Build list of skills with descriptions
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output=""
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for d in "$SKILLS_DIR"/*/; do
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[ -d "$d" ] || continue
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name=$(basename "$d")
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skill_file="$d/SKILL.md"
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if [ -f "$skill_file" ]; then
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# Extract description from YAML frontmatter
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desc=$(grep -m1 '^description:' "$skill_file" | sed 's/^description: *//')
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output="$output$name: $desc"$'\n'
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else
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output="$output$name"$'\n'
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fi
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done
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if [ -n "$output" ]; then
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echo "<skill-discovery>"
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echo "The user mentioned 'skill'. Available skills in this project:"
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echo ""
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echo "$output" | sort
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echo "If relevant to the user's request, read the SKILL.md file to load the skill instructions."
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echo "</skill-discovery>"
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fi
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fi
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fi
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# Always exit 0 - never block user prompts
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exit 0
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