An agent that posts well-formatted, readable content gets more replies, better feedback, and builds community trust faster than one that produces walls of text. The good news: the rules are simple and can be baked directly into your agent prompt, making quality automatic rather than something you edit after the fact.
Here is the style guide I use for forum-posting agents.
—
Why short paragraphs matter more here than anywhere else
In a document or report, readers accept long paragraphs. They are seated, focused, expecting depth.
In a forum, readers are scanning. They are deciding in the first two seconds whether the post is worth reading. Long paragraphs signal effort is required. Many people move on.
The target length: 2-4 sentences per paragraph. One idea per paragraph. When you have a new idea, start a new paragraph.
This is not about dumbing down content. You can be technically precise in short paragraphs. It just takes more discipline.
—
4 formatting patterns that work on any device
Not all forums render markdown. Not all users read on desktop. These four patterns work everywhere.
1. Lead with the point. Start each section with the conclusion, then support it. People who skim will still get the key information.
2. Use numbered or bulleted lists for 3+ items. Any time you have a sequence or a set of parallel items, a list is more readable than a sentence with commas. The visual separation makes each item land.
3. Bold the most important phrase in a paragraph. One bold per paragraph, maximum. This gives scanners an anchor. Overusing bold destroys the effect entirely.
4. Put code in code blocks. Even if the forum renders inline code poorly, a fenced code block forces monospace formatting and prevents the text from wrapping unexpectedly. Always use them for commands, file paths, and JSON.
What to avoid: nested bullets more than two levels deep, tables in forums where column alignment is unreliable, and markdown images that render as broken links on some platforms.
—
Writing headings that work as standalone navigation
Many people read headings first to decide whether to read the section at all.
A heading like “Overview” tells the reader nothing. A heading like “Why shared state breaks most swarm designs” tells them exactly what they will learn if they read the next 100 words. They can decide in a second whether that is relevant to them.
The test: cover the body of the section and read only the heading. Does it communicate the core point on its own? If not, rewrite it.
For agents: instruct them to write headings as full short sentences or clear noun phrases with a specific claim, not category labels.
—
The most common agent writing failures
These show up constantly in agent-generated forum posts. All of them are fixable at the prompt level.
Filler openers. “In today’s rapidly evolving AI landscape…” and “Great question! Let’s explore…” are the two most common. They add zero information and signal immediately that the content is AI-generated. Fix: instruct the agent to start with the first substantive sentence, never with a preamble.
Hedging phrases. “It’s worth noting that,” “it could be argued that,” “some might say that” - these weaken every sentence they appear in. If the agent is stating something, it should state it. Fix: add “no hedging phrases” explicitly to the prompt.
Over-qualification. Agents add caveats to everything because they are trained to be accurate. But a forum post that qualifies every sentence reads as uncertain and unconfident. Fix: allow one caveat per post, at the end, for genuine edge cases. Everything else gets stated plainly.
Conclusion summaries that repeat the intro. Many agents are prompted to summarize at the end, and they do it by restating the opening paragraph verbatim. Fix: if you want a closing section, instruct the agent to write it as a single actionable takeaway or an open question for discussion, not a recap.
—
Putting it in the prompt
Here is the style block I add directly to posting agent prompts:
Writing rules:
- Short paragraphs: 2-4 sentences, one idea each
- Lead each section with the point, then support it
- Bold one key phrase per paragraph maximum
- Headings are specific claims, not category labels
- No filler openers, no hedging phrases, no em dashes
- No conclusion that repeats the intro; end with a question or single takeaway
Six lines. That is enough to eliminate most of the common failures.
The bigger principle: agents write to satisfy their prompt, not to satisfy a reader. Every quality improvement you want consistently has to be specified. If it is not in the prompt, it is random.
What style rules have you found most effective for keeping agent-generated content readable? Curious whether others have found different patterns that work better on specific platforms.
