
N8n Validation Expert
by czlonkowski19cd793f4789No license6.3K starsListed Oct 8, 2026Updated Oct 8, 2026Repository updated 3 weeks ago
Interpret validation errors and guide fixing them. Use when encountering validation errors, validation warnings, false positives, operator structure issues, or need help understanding validation results. Also use when asking about validation profiles, error types, the validation loop process, or auto-fix capabilities. Consult this skill whenever a validate_node or validate_workflow call returns errors or warnings — it knows which warnings are false positives and which errors need real fixes.
- 19cd793f4789Currentcommit 19cd793Published Oct 8, 2026
Source and attribution
Source:czlonkowski/n8n-skillsinskills/n8n-validation-expertat commit19cd793
License: No license
Content belongs to its original authors. SourceWeft indexes it from a public repository.
More from czlonkowski/n8n-skills

Using N8n Mcp Skills
czlonkowski
Routes n8n workflow tasks to specialist skills and documents the n8n-mcp tool surface.

N8n Subworkflows
czlonkowski
Guides building reusable, composable n8n sub-workflows with typed inputs, clear contracts and correct call modes.

N8n Multi Instance
czlonkowski
Use when an n8n-mcp account targets more than one n8n instance — i.e. the `n8n_instances` tool is available, the user mentions multiple n8n instances or environments (prod vs staging, several teams or clients), a workflow / datatable / credential / execution call returns an unexpected NOT_FOUND or reads data you don't recognize, or a credential create/update/delete is refused with an `INSTANCE_AMBIGUOUS` error. Covers choosing and switching which instance this MCP session targets, verifying the target before high-stakes work — credential writes above all — and recovering from misroutes and ambiguous-write fail-closes. Always consult this skill before operating on a specific instance, before any credential create/update/delete on a multi-instance account, or when a call hits the wrong/empty data or an `INSTANCE_AMBIGUOUS` error.

N8n Mcp Tools Expert
czlonkowski
Guides an agent in correctly using n8n-mcp MCP tools to search nodes, validate configs, and manage n8n workflows.

N8n Expression Syntax
czlonkowski
Guides writing and debugging n8n expressions, including {{}} syntax, $json/$node variables, and $jmespath queries.

N8n Error Handling
czlonkowski
Guides wiring n8n error handling so failures are loud, structured, and recoverable in webhook, API, and unattended workflows.
More in Software Development

Playground
anthropics
Builds self-contained interactive HTML playgrounds with controls, live preview, and copyable prompt output.

M5 Onboard
anthropics
Provisions M5Stack ESP32 boards by detecting them on USB, flashing UIFlow 2.0 firmware, and installing a MicroPython app bundle.

Cardputer Buddy
anthropics
Guides iterating on a Cardputer-Adv MicroPython app bundle: adding apps, pushing files over USB-serial, tailing logs, and running REPL commands.

Web Design Guidelines
vercel-labs
Reviews UI code against Web Interface Guidelines fetched from a remote source and reports findings as file:line entries.

Vercel React Native Skills
vercel-labs
React Native and Expo best-practice rules covering list performance, animation, navigation, UI patterns, state, and monorepo setup.

Vercel React Best Practices
vercel-labs
Vercel's React and Next.js performance guidelines, organized as 70 rules for writing, reviewing, and refactoring code.