aperion-shield 0.9.0

Aperion Shield -- a local MCP guardrail for AI coding agents with optional biometric identity gates (ID.me). Standalone, free, open source.
Documentation 
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shieldset:
  policy:
    composite_scoring:
      enabled: false
    workspace_probe:
      enabled: false
    decision_memory:
      enabled: false
    burst_detector:
      enabled: false

  rules:
    # Severity = Medium (Warn) in the before-state.
    - id: sql.alter_table_drop_column
      severity: Medium
      points: 2
      where: tool_call
      match:
        tool: [execute_sql]
        sql_matches: ['(?i)ALTER\s+TABLE\s+\w+\s+DROP\s+COLUMN']
      reason: "ALTER TABLE ... DROP COLUMN destroys data."