Forge Skill

Typically runs automatically via SessionEnd hook.

Extract knowledge from session transcripts.

How It Works

The SessionEnd hook runs:

ao forge transcript --last-session --queue --quiet

This queues the session for knowledge extraction.

Flags

Promote Mode

Given /forge --promote:

Promote Step 1: Find Pending Files

ls -lt .agents/knowledge/pending/*.md 2>/dev/null
ls -lt .agents/ao/pending.jsonl 2>/dev/null

If no pending files found, report "No pending extractions" and exit.

Promote Step 2: Process Each Pending File

For each file in .agents/knowledge/pending/:

1. Read the file content
2. Validate it has required fields (# Learning:, **Category**:, **Confidence**:)
3. Copy to .agents/learnings/ (preserving filename)
4. Remove the source file from .agents/knowledge/pending/

Promote Step 3: Process Pending Queue

if [ -f .agents/ao/pending.jsonl ] && [ -s .agents/ao/pending.jsonl ]; then
  # Process each queued session
  cat .agents/ao/pending.jsonl
  # After processing, clear the queue
  > .agents/ao/pending.jsonl
fi

Promote Step 4: Report

Promoted N learnings from pending → .agents/learnings/
Queue cleared.

Done. Return immediately after reporting.

Manual Execution

Given /forge [path]:

Step 1: Identify Transcript

With ao CLI:

# Mine recent sessions
ao forge transcript --last-session

# Mine specific transcript
ao forge transcript <path>

Without ao CLI: Look at recent conversation history and extract learnings manually.

Step 2: Extract Knowledge Types

Look for these patterns in the transcript:

Step 3: Write Candidates

Write to: .agents/forge/YYYY-MM-DD-forge.md

# Forged: YYYY-MM-DD

## Decisions
- [D1] <decision made>
  - Source: <where in conversation>
  - Confidence: <0.0-1.0>

## Learnings
- [L1] <what was learned>
  - Source: <where in conversation>
  - Confidence: <0.0-1.0>

## Failures
- [F1] <what failed and why>
  - Source: <where in conversation>
  - Confidence: <0.0-1.0>

## Patterns
- [P1] <reusable pattern>
  - Source: <where in conversation>
  - Confidence: <0.0-1.0>

Step 4: Index for Search

if command -v ao &>/dev/null; then
  ao forge markdown .agents/forge/YYYY-MM-DD-forge.md 2>/dev/null
else
  # Without ao CLI: auto-promote high-confidence candidates to learnings
  mkdir -p .agents/learnings .agents/ao
  for f in .agents/forge/YYYY-MM-DD-*.md; do
    [ -f "$f" ] || continue
    # Extract confidence (numeric or categorical)
    CONF=$(grep -i "confidence:" "$f" | head -1 | awk '{print $NF}')
    # Normalize categorical to numeric: high=0.9, medium=0.6, low=0.3
    case "$CONF" in
      high) CONF_NUM=0.9 ;; medium) CONF_NUM=0.6 ;; low) CONF_NUM=0.3 ;; *) CONF_NUM=$CONF ;;
    esac
    # Auto-promote if confidence >= 0.7
    if (( $(echo "$CONF_NUM >= 0.7" | bc -l) )); then
      cp "$f" .agents/learnings/
      TITLE=$(head -1 "$f" | sed 's/^# //')
      echo "{\"file\": \".agents/learnings/$(basename $f)\", \"title\": \"$TITLE\", \"keywords\": [], \"timestamp\": \"$(date -Iseconds)\"}" >> .agents/ao/search-index.jsonl
      echo "Auto-promoted (confidence $CONF): $(basename $f)"
    fi
  done
  echo "Forge indexing complete (ao CLI not available — high-confidence candidates auto-promoted)"
fi

Step 5: Report Results

Tell the user:

• Number of items extracted by type
• Location of forge output
• Candidates ready for promotion to learnings

The Quality Pool

Forged candidates enter at Tier 0:

Transcript → /forge → .agents/forge/ (Tier 0)
                           ↓
                   Human review or 2+ citations
                   OR auto-promote (confidence >= 0.7, ao-free fallback)
                           ↓
                   .agents/learnings/ (Tier 1)

Key Rules

• Runs automatically - usually via hook
• Extract, don't interpret - capture what was said
• Score by confidence - not all extractions are equal
• Queue for review - candidates need validation

Examples

SessionEnd Hook Invocation

Hook triggers: session-end.sh runs when session ends

What happens:

1. Hook calls ao forge transcript --last-session --queue --quiet
2. CLI analyzes session transcript for decisions, learnings, failures, patterns
3. CLI writes session ID to .agents/ao/pending.jsonl queue
4. Next session start triggers /forge --promote to process the queue

Result: Session transcript automatically queued for knowledge extraction without user action.

Manual Transcript Mining

User says: /forge <path> or "mine this transcript for knowledge"

What happens:

1. Agent identifies transcript path or uses ao forge transcript --last-session
2. Agent scans transcript for knowledge patterns (decisions, learnings, failures, patterns)
3. Agent scores each extraction by confidence (0.0-1.0)
4. Agent writes candidates to .agents/forge/YYYY-MM-DD-forge.md
5. Agent indexes forge output with ao forge markdown
6. Agent reports extraction counts and candidate locations

Result: Transcript mined for reusable knowledge, candidates ready for human review or 2+ citations promotion.

Troubleshooting