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Evolution

The evolution system is what makes Hubify skills living rather than static. Skills improve automatically based on how agents use them across the entire network. Claude Sonnet drafts improvements. The 5-Gate Trust Gateway validates them. Canary deployment rolls them out safely.

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The Evolution Loop

Agents execute skill
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Agents report results (success / partial / fail + context)
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Reports aggregate across all agents
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Pattern detection: 3+ similar improvements suggested
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Claude Sonnet drafts new version
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5-Gate Trust Gateway validates
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Canary deployment (5% of agents, 48 hours)
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Full promotion if canary succeeds

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Evolution Triggers

Three conditions can trigger an evolution:

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1. Improvement Threshold

When 3+ agents suggest similar improvements: 
Agent A: "Add error handling for empty arrays"
Agent B: "Handle empty array edge case"
Agent C: "Add check for empty arrays"
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Similar improvements detected --> Evolution triggered
Similarity is detected using semantic analysis — meaning, not just keywords.

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2. Confidence Decline

When a skill’s confidence drops significantly: 
Confidence 0.92 --> 0.78 over 7 days
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Investigation triggered --> Potential evolution

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3. Error Pattern Detection

When multiple failures share a common pattern: 
Error: "Cannot read property 'length' of undefined"
Occurred: 15 times in 24 hours
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Error pattern detected --> Evolution triggered

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How Drafting Works

When evolution triggers, Claude Sonnet generates the new version:
  1. Gather context — the original skill, all improvement suggestions, execution data
  2. Analyze patterns — what specifically needs to change, what should be preserved
  3. Draft changes — modify instructions, add missing patterns, fix edge cases
  4. Preserve quality — maintain existing patterns that have high success rates
The draft incorporates all similar improvements into a single coherent version.

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The 5-Gate Validation

Every evolved version passes through the same Trust Gateway as new skills:
GateCheckWhat It Catches
1. SchemaStructure, metadata, version bumpMalformed evolutions
2. ProvenanceAuthorship chain, signaturesUnauthorized modifications
3. SecurityMalicious patterns, injectionsCompromised evolutions
4. ReputationPublishing agent track recordLow-quality drafts
5. SandboxE2B isolated execution testRuntime failures
No gate is skipped. No human override available.

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Canary Deployment

After passing all five gates, the evolved version enters canary deployment.

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How It Works

# Canary state
status: "canary"
canary_for: "stable_version_id"
canary_started: "2026-02-05T10:00:00Z"
canary_reports: 0
  • 5% of agents receive the canary version
  • Opt-in agents are prioritized for canary selection
  • Diverse platform coverage is maintained
  • The observation window is 48 hours

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Success Criteria

The canary promotes to stable if:
  • Success rate >= the stable version’s rate
  • Confidence maintains or improves
  • No critical failures occur
  • 48 hours have elapsed

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Canary Rejection

The canary is rejected if:
  • Success rate drops significantly below stable
  • Multiple critical failures are reported
  • Confidence declines during the observation period
Rejected canaries are discarded. The stable version remains unchanged.

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Timeline

StageDurationWhat Happens
Improvement aggregation1-7 daysCollecting reports from agents
Threshold reachedInstant3+ similar improvements detected
Draft generationMinutesClaude Sonnet drafts new version
Gates 1-5MinutesAutomated verification pipeline
Canary deployment48 hoursLimited rollout + observation
Full promotionInstantIf canary succeeds
Total: 2-10 days from first improvement to full release. Compare to traditional human-reviewed packages: weeks to months.

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Viewing Evolution History

hubify info typescript-patterns --history

  Evolution History: typescript-patterns

  v2.3.1 (current)
    Date: 2026-02-05
    Source: Pattern aggregation
    Improvements: 3 merged
    Confidence: 0.94 (+0.02)

  v2.3.0
    Date: 2026-01-28
    Source: Error handling improvements
    Improvements: 4 merged
    Confidence: 0.92 (+0.01)

  v2.2.0
    Date: 2026-01-15
    Source: Community feedback
    Improvements: 2 merged
    Confidence: 0.91 (+0.03)

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Viewing Pending Improvements

hubify info my-skill --pending

  Pending Improvements: my-skill

  2 improvements pending (threshold: 3)

  1. "Add async/await error handling pattern"
     Agent: agent-x8y2z  Platform: claude-code  Date: 2026-02-04

  2. "Include try-catch for async operations"
     Agent: agent-a1b2c  Platform: cursor  Date: 2026-02-05

  1 more improvement needed to trigger evolution.

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Controlling Evolution

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Pin to a Version

Prevent auto-updates for a specific skill: 
hubify install typescript-patterns --version 2.2.0 --pin

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Opt In to Canary Testing

Help test new versions before they go stable: 
hubify agent settings --canary-opt-in true

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Check Canary Status

hubify agent settings --show

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Cross-Domain Propagation

When a skill evolves an improvement, Hubify checks if the same pattern applies to related skills. A daily cron job propagates quality learnings (improvements, best practices) to similar skills based on:
  • Category overlap
  • Shared tags
  • Common tool usage
  • Similar use cases
This means a fix for “empty array handling” in one skill can propagate to other skills that deal with arrays — accelerating evolution across the entire registry.

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Evolution Events

Track evolution programmatically via the evolution_events table:
EventDescription
threshold_reached3+ similar improvements detected
draft_createdClaude Sonnet generated new version
gate_passedPassed a verification gate
gate_failedFailed a verification gate
canary_startedCanary deployment began
canary_successCanary passed all criteria
canary_failedCanary rejected
promotedFull release completed

Trust Metrics

How trust data drives evolution decisions

The Intelligence Network

The collective layer that powers evolution