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n8n

The Postika node for n8n: schedule posts from any workflow, with your channels in a dropdown and photos from any previous node.

Install the node

1
In n8n, open Settings → Community nodes and click Install.
2
Enter n8n-nodes-postika, accept the notice and install. The Postika node appears in the nodes panel.

Self-hosted with Docker or npm, without the UI? Install it in n8n's custom folder and restart n8n:

cd ~/.n8n/nodes   # create it if needed
npm install n8n-nodes-postika

Community nodes need a self-hosted n8n, or an n8n Cloud plan that allows them. Without them, use the HTTP Request recipe: same API, a few more fields to fill.

Credentials

1
In Postika, open your project → Connect AI (Conectar IA) → Project keys (Claves de proyecto) and create a key.
2
In the Postika node, Credential to connect with → Create new credential, paste the key in API Key and save. n8n tests it right away.

Field	Value
API Key	`ptk_…`
Base URL	`https://postika.app`. Change it only for a self-hosted or test server.

Operations

Resource	Operation	API
Post	Create	POST /api/v1/posts
Post	Get	GET /api/v1/posts/:id
Post	Get Many	GET /api/v1/posts
Post	Delete	DELETE /api/v1/posts/:id
Channel	Get Many	GET /api/v1/channels
Project	Get Many	GET /api/v1/projects

Every operation returns the API's data: lists come out as one item per post, channel or project. The node can also be used as a tool by n8n's AI Agent.

Create a post

Field	Notes
Text	1 to 5000 characters. Map it from the trigger, e.g. {{ $json.title }}.
Channel Names or IDs	Pick them from the list, or map an array or comma-separated string of channel IDs.
Mode	Send for Approval (default, safest while testing), Schedule, Draft or Publish Now.
When	Project local time `YYYY-MM-DD HH:MM`. ISO dates are accepted too (their time zone is ignored).
Options → Media URLs	Public https links straight to photos or videos, comma or newline separated.
Options → Binary Properties	Binary fields of the incoming item to upload, e.g. `data` from Google Drive or HTTP Request.
Options → Per-Channel Texts	A different text for some channels.
Options → Note	For whoever approves it. Not published.

When, as an expression

{{ $now.plus({ days: 1 }).set({ hour: 9, minute: 30 }).toFormat('yyyy-MM-dd HH:mm') }}

Example workflows

New blog post → LinkedIn and X

1
RSS Feed Trigger with your blog feed.
2
Postika → Post → Create: Text {{ $json.title }} {{ $json.link }}, your LinkedIn and X channels, Mode Schedule, When one hour from now.

Photo dropped in Google Drive → Instagram

1
Google Drive Trigger (file created in a folder) → Google Drive → Download.
2
Postika → Post → Create with your Instagram channel, Mode Send for Approval and Options → Binary Properties data. The photo is uploaded to Postika and attached.

Daily alert for failed posts

1
Schedule Trigger every morning.
2
Postika → Post → Get Many with Filters → Status Failed.
3
Send each item to Slack or email with the channel error from channels[].error.

Triggers

There is no Postika trigger node yet, because the API has no webhooks. To react to changes, poll Get Many with a Schedule Trigger, as in the alert above.

AI Agent with MCP

To let an n8n AI Agent decide what to post, you can also give it Postika's MCP server as a tool: see Automations → AI Agent with MCP.