Skill Distiller

Skill Distiller

Turn successful workflows into reusable skills — automatically.

Inspired by Hermes Agent's learning loop, but with quality gates to prevent skill bloat.

When to Distill

Not every task deserves a skill. Evaluate these three criteria:

All three must be YES to proceed:

1. Novel? — Did this task require a workflow you haven't done before? (If you already have a skill for this, update it instead of creating a new one)
2. Successful? — Did the task complete with verified results? (Failed tasks produce lessons, not skills — write to memory/lessons-learned.md instead)
3. Reusable? — Will this exact workflow likely be needed again? (One-off tasks don't need skills)

Quick scoring:

Novel + Successful + Reusable = CREATE SKILL
Novel + Successful + One-off  = WRITE TO MEMORY (lesson learned, not a skill)
Novel + Failed                = WRITE TO LESSONS-LEARNED
Not Novel                     = UPDATE EXISTING SKILL (or skip)

Distillation Process

Step 1: Extract the Workflow

Look back at what you just did and identify:

• Trigger: What kind of request started this? (pattern, not specific instance)
• Steps: What were the key steps, in order?
• Tools: Which tools were used and how?
• Decisions: What non-obvious choices were made and why?
• Gotchas: What almost went wrong or required retry?

Step 2: Generalize

Transform the specific instance into a reusable pattern:

• Replace specific file names with <input_file>, <output_path> etc.
• Replace specific content with descriptions of what goes there
• Extract magic numbers into named parameters
• Identify which steps are always needed vs. conditional

Bad (too specific):

1. Read ch10-multi-agent-comm-patterns.md
2. Convert markdown to docx using python-docx
3. Upload to feishu folder nodcnxdXVfsiCVDuiigFVpnCPoc

Good (generalized):

1. Read source markdown file(s)
2. Convert to docx using python-docx (see references/docx-patterns.md)
3. Upload to target feishu folder

Step 3: Write SKILL.md

Generate the skill following the standard format:

---
name: <slug>
description: "<when to use this skill — be specific about triggers>"
---

# <Skill Name>

## When to Use
<1-2 sentences on the trigger pattern>

## Workflow
<Numbered steps — the core of the skill>

## Key Decisions
<Non-obvious choices and their rationale>

## Gotchas
<Things that can go wrong and how to handle them>

## References
<Links to detailed docs if needed>

Size target: SKILL.md body should be under 200 lines. If longer, split into SKILL.md (workflow) + references/ (details).

Step 4: Quality Check

Before saving, verify:

• Description clearly states when this skill should trigger
• Steps are ordered and each has a clear action
• No hardcoded values that should be parameters
• Gotchas are specific, not generic ("handle errors properly" = useless)
• Doesn't duplicate an existing skill (check ls ~/.openclaw/skills/)

Step 5: Save and Register

Save to ~/.openclaw/skills/<slug>/SKILL.md.

If the skill has reference materials, save them to ~/.openclaw/skills/<slug>/references/.

After saving, verify the skill loads:

ls ~/.openclaw/skills/<slug>/SKILL.md

Automatic Distillation Mode

When integrated with trinity-harness's Layer 3 (Compound), distillation happens automatically:

1. Task completes → Layer 3 Compound phase triggers
2. Evaluate Novel + Successful + Reusable
3. If all YES → run distillation process
4. If NO → write lesson to memory instead
5. Announce to user: "Distilled skill: . Review with read ~/.openclaw/skills/<slug>/SKILL.md"

Never auto-distill silently. Always announce what was created so the user can review, edit, or delete.

Skill Maintenance

Update vs. Create

Before creating a new skill, check if a related one exists:

ls ~/.openclaw/skills/ | grep -i <keyword>

If a similar skill exists, update it (add the new pattern as a variant) rather than creating a near-duplicate.

Pruning

Periodically (during Dream Task), review skills:

• Skills unused for 30+ days → candidate for archival
• Skills with overlapping triggers → merge
• Skills that have been superseded → mark deprecated

Anti-Patterns

Integration with Memory System

Distillation complements, not replaces, the memory system: