How to write a good brief for an AI agent that drafts your posts
Table of contents
An AI agent writes from what you give it. A vague brief gives generic posts that you then have to rework one by one. A precise brief gives drafts close to what you would have written. Five minutes on the brief saves a lot of time afterwards.
What a good brief contains
- Who you are, in one sentence: the business, the product, what sets you apart.
- Who is reading. Not “everyone”: one profile, what they’re looking for, what they already know.
- The tone, in three adjectives, plus an example of a post you like.
- This week’s goal. Just one: announce something new, fill an event, answer a question that keeps coming up.
- The formats you want: text only, a series of visuals, a short video, and how many posts.
- The no-gos: topics, words, numeric promises, comparisons with competitors.
A template to copy
You are the editorial assistant of [brand], [one sentence about the business].
Audience: [who reads, what they are looking for].
Tone: [three adjectives], first person plural, no jargon.
Goal this week: [one goal only].
Write 5 draft posts, one per working day.
For each: the network, the text, an idea for the visual, the suggested time slot.
Constraints: respect each network’s length, two hashtags at most,
no numeric promises, no political topics.
If you’re missing information, ask instead of making it up.The last line matters more than it looks: an agent that is told it may ask makes things up less.
Adapting the brief to each network
The same message isn’t written the same way everywhere: calmer on LinkedIn, shorter and more visual on Instagram or TikTok, more direct on X. Spell out each network’s length and register in the brief, and check the character limits currently in force: they change.
Evolving the brief
Keep the drafts you accepted as they were and paste two or three into the next brief as examples. Each week, remove what’s no longer useful and add what you had to correct: “never an exclamation mark”, “always the link at the end”. After a month, the brief describes how you write better than any style guide.
For the rest of the workflow, read Delegating social media scheduling to an AI agent without losing control.
Article by
The Postbiz team
Postbiz is open-source software to schedule your posts and answer all your messages and comments from a single inbox. Here we write about what we learn while building it.
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