Platforms

Dev.to: posting rules and settings

What a Dev.to channel accepts in Postemi: media, limits, required fields, and the fields of the settings object for the API.

Beta

New in Postemi and not yet tested with many accounts. Tell us if something does not work.

Basics

Platform

Dev.to

Character limit

The platform does not specify a general limit.

Media

Only the cover image (main_image) is sent. Pictures attached to the post are not.

settings.__type

devto

Required fields

title, tags

Platform page

Dev.to scheduler

Rules

You connect with an API key from dev.to (Settings > Extensions).
The article is published at the scheduled time, as Markdown.
Beta: not yet tested with many accounts.

Settings fields

These fields go into the post's settings object, alongside the __type field. In the UI, you fill in the same ones in the channel's settings section.

Field	Type	Required	What it does
title	string	yes	The article title, at least 2 characters.
main_image	{ id: string; path: string }	no	The cover image.
tags	{ value: string; label: string }[]	yes	Up to 4 tags; the label is sent. An empty array for none.
canonical	string	no	The URL of the original article.
organization	string	no	The id of an organization to publish under (the organizations function lists them).

Examples

Each example is one item in the POST /public/v1/posts request's posts array. The envelope around it is always this:

{
  "type": "schedule",
  "date": "2026-09-15T09:00:00.000Z",
  "shortLink": false,
  "posts": [ /* the item below */ ]
}

{
  "integration": { "id": "<channel-id>" },
  "value": [{ "content": "<p>The text of the post.</p>", "image": [] }],
  "settings": { "__type": "devto" }
}

The channel ID comes from the channel list, and the path values for images and videos from media upload. The exact schema for the connected account comes from the settings schema endpoint. From the command line, the same thing is the --settings flag. See the CLI examples.

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