
N8n Error Handling
by czlonkowski19cd793f4789No license6.3K starsListed Oct 8, 2026Updated Oct 8, 2026Repository updated 3 weeks ago
Wire n8n error handling so failures are loud, structured, and recoverable. Use when building any webhook/API workflow, a scheduled or unattended workflow, or any path where a silent failure would drop user-visible work — and whenever the user mentions error handling, onError, continueErrorOutput, error branches/outputs, retries, retryOnFail, Respond to Webhook status codes, 4xx/5xx, Error Trigger, or "my workflow fails silently". Covers per-node error outputs and wiring, retry/self-healing, error-trigger workflows, and 4xx/5xx response shapes.
Add to a SourceWeft workspace
- Open the skill in your dashboard and add it to a workspace.
- Enable it for the chats that should use it.
This skill is instructions only: it ships no scripts to execute.
Add to SourceWeftYou will be asked to sign in first, then taken straight to this skill.
Ask your agent to install it
Paste this prompt into Claude Code, Codex, Cursor or another agent that can run commands — or into SourceWeft chat. The agent reads this skill's install guide, shows you its source, license and scripts, and installs it with the SourceWeft CLI once you agree.
Read https://sourceweft.com/skills/gh-czlonkowski-n8n-skills-n8n-error-handling/install.md and install the skill it describes. Before installing, show me its source, license and whether it ships scripts, and wait for my OK. Ask me before changing anything else on my machine.Install it yourself from a terminal
For Claude Code, Codex, Cursor and other local agents. The SourceWeft CLI fetches the skill from its source repository at the commit scanned here, and verifies every file against the hashes recorded when the skill was scanned. If anything differs, nothing is written.
npx @sourceweft/cli skills install gh-czlonkowski-n8n-skills-n8n-error-handlingAdd --agent claude-code, codex, cursor or universal to choose which agent gets it (Claude Code by default).
Upstream installer — not verified by SourceWeft
The open-source skills installer fetches the same pinned commit, but does not check the files against the hashes SourceWeft recorded.
npx skills add https://github.com/czlonkowski/n8n-skills/tree/19cd793f4789e3ef9c657ccf26e097f641a77df0/skills/n8n-error-handlingSource and attribution
Source:czlonkowski/n8n-skillsinskills/n8n-error-handlingat 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 Validation Expert
czlonkowski
Guides interpretation and fixing of n8n workflow validation errors, warnings and false positives.

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.
More in DevOps & Cloud

Playwright Devops
microsoft
DevOps workflows for Playwright: analyze GitHub Actions failures for the last commit on main and fetch failed job logs.

M5 Onboard
anthropics
Provisions M5Stack ESP32 boards by detecting them on USB, flashing UIFlow 2.0 firmware, and installing a MicroPython app bundle.
Yeet
openai
Stages, commits, pushes, and opens or updates a GitHub pull request in one flow using the GitHub CLI.

Runbook
anthropics
Creates or updates step-by-step operational runbooks for recurring tasks, including troubleshooting, rollback and escalation.

Incident Response
anthropics
Guides an incident response workflow: severity triage, status updates, mitigation tracking, and blameless postmortems.

Deploy Checklist
anthropics
Generates a pre-deployment readiness checklist covering pre-deploy, deploy, post-deploy and rollback triggers.