N8N Workflow API Patcher is a skill that applies bulk updates to n8n workflow nodes through the n8n REST API, eliminating the need to open and manually edit workflow JSON files one by one. It targets developers and automation engineers who maintain large numbers of n8n workflows and periodically need to apply the same change across many of them at once.
The skill addresses several recurring maintenance tasks: migrating API endpoints from one LLM provider to another (for example, moving from Ollama to a different LLM API), correcting code node typeVersion values across workflows, updating authentication headers in bulk, and changing typeValidation mode settings. These are changes that would otherwise require opening each workflow individually in the n8n editor or writing one-off scripts against the API.
The skill connects to a locally running n8n instance at http://localhost:5678 and requires an API key to be configured before use. Because it depends on a local n8n instance at that specific address, it is not suited for remote or cloud-hosted n8n deployments unless network routing is arranged externally. There are no additional environment variables documented in the registry record. The skill is described as built for n8n power users who maintain ten or more workflows, so it is less relevant for single-workflow or small-scale setups.