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Add comprehensive security auditing combining n8n's built-in POST /audit API with deep workflow scanning using 50+ regex patterns for hardcoded secrets, unauthenticated webhook detection, error handling gap analysis, data retention risk assessment, and PII detection. The audit returns a compact markdown report grouped by workflow with a Remediation Playbook showing auto-fixable items (with tool chains), items requiring review, and items requiring user action. Also adds n8n_manage_credentials tool (list/get/create/update/delete/getSchema) enabling AI agents to create credentials and assign them to nodes as part of security remediation. Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>