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The Wire node for n8n lets any workflow write entries into a Wire container. Use it as an action at the end of a pipeline, or as a tool that an n8n AI Agent can call on its own.

The node is open source and published as an npm package: n8n-nodes-wire · source on GitHub.

Install

In n8n Cloud or any self-hosted n8n (v1.17 or later):

Open Settings → Community Nodes
Click Install
Enter the package name: n8n-nodes-wire
Accept the risk notice and install

On self-hosted, you can also install from the command line:

npm install n8n-nodes-wire

Then restart n8n.

Setup

Each Wire credential in n8n points at one container. You can create as many as you want (one per container, or one per environment).

In Wire, open the container you want to write to and go to the Sources tab.
Click Setup on the n8n card.
Copy the Wire Address. It looks like:
```
wire://your-org/your-container
```
Click Create container API key, give it a name (e.g. n8n), and copy the revealed key.
In n8n, open Credentials → New → search “Wire”, pick Wire Container.
Paste the Wire Address and API Key.
Click Test. A successful test means n8n reached your container.

You can rename the credential to anything you want (e.g. Prod Container, Q2 Planning) so it’s obvious which one you’re picking later in a workflow.

Write an entry

Add a Wire node to your workflow. Pick your credential and map the Content field.

What the fields do

Field	Purpose
Content (required)	The data you want to store. A string, markdown, or an expression resolving to an object.
Tags	Comma-separated labels for later filtering.
Source Override	Custom label for where the entry came from. By default, Wire stamps it with `n8n:{workflowId}:{nodeName}`.
Metadata	JSON blob for audit info (run IDs, upstream record IDs, etc.).

Examples

Store the whole input item as structured data

Set Content to the expression {{ $json }}. Wire recognizes the object and stores it as structured JSON.

Store a specific field as text

Set Content to {{ $json.summary }} or any other property. Strings are stored as text.

Store a fixed string

Set Content to a literal like Daily sync completed. Useful for heartbeat or event-style writes.

Use it as an AI Agent tool

The Wire node is usableAsTool, which means an n8n AI Agent node can call it directly. Build an AI agent that reads a prompt and decides when to save a note, log a decision, or capture a finding into Wire.

Add an AI Agent node (under AI / LangChain in the node palette).
Give it a chat model and a system prompt.
Under Tools, add the Wire node and pick your credential.
Run the agent. When its reasoning produces something worth storing, it calls Wire with a content string and the write lands in your container, tagged with the agent’s source.

This works without any special glue code. The same node you use for deterministic writes is also available to agents as a tool.

What gets written

Every successful call makes one entry in the container, equivalent to a POST /container/:id/tools/write REST call. Wire auto-classifies the content (text, markdown, or structured) and tags the entry with the workflow and node name so you can trace where each entry came from in wire_explore or wire_search later.

See REST API → Write for the underlying endpoint contract.

Errors

The node surfaces Wire’s error codes as plain messages:

Insufficient credits — writes themselves are free, but a container is locked when the organization’s credit balance is below its floor. Top up at usewire.io.
API key was rejected — the key is invalid, revoked, expired, or doesn’t belong to the container in the Wire Address.
Not found — the Wire Address in the credential is wrong.

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