TL;DR: ThreadFox’s founder shares one copyable prompt that turns a single finished product into three different Reddit introductions, each matched to its subreddit’s actual rules and its reader’s actual problem.
Picture posting about the same app three times on Reddit without tripping a single spam filter. That’s what u/investigatormaker pulled off with ThreadFox, a Reddit toolkit built for Claude Code, Claude Desktop, and Codex. The post shares the exact prompt behind it, plus a full worked example showing all three drafts side by side.
Here’s what makes it worth stealing. Most people write one launch post and copy it into five subreddits. That gets you banned, or worse, ignored. This prompt forces something smarter: read the room first, then write.
What the Prompt Actually Forces You to Do
Four fields go in up front: what the product does, who has the problem, one real demonstration, and the price plus requirements. Simple enough.
The real work happens in the instructions that follow. Before writing a word, the prompt makes the model:
- Read each subreddit’s current rules
- Pick the allowed format: standalone post, a comment in a designated showcase thread, or no placement at all
- Quote the actual promotion, AI-content, link, and frequency rules it’s following
- Flag out loud when a rule isn’t stated anywhere
- Skip a subreddit entirely rather than force a placement that doesn’t fit
That last point is the one people skip. The author’s own example only produced three distinct formats, two standalone posts and one thread comment, because that’s what the rules actually allowed. No padding, no forcing a fourth post just to hit a round number.
Three Pitches, One Brief
One commenter nailed the real insight in the thread: the MCP developer crowd and the no-code crowd need completely different pitches for the same product, and this is proof of it.
For MCP developers, the prompt produced a draft showing the actual reservation-to-browser-action-to-result sequence, with a completion report a technical reader would actually trust. For agent builders, it taught five inputs to a launch brief, including how to propose a demonstration without claiming you already tested it. For a designated no-code launch thread, it wrote something shorter and more direct: what the kit does, the price, requirements, and the help included.
Same product, three readers, three jobs. The prompt also forces a separation between what was actually built or measured and anything offered as a proposed example, which keeps the draft honest instead of oversold.
Use Cases
- Launching a dev tool across technical and non-technical subreddits without writing five versions by hand
- Checking a subreddit’s current promotion rules before posting something that was fine six months ago and isn’t now
- Drafting a showcase-thread comment that reads like a direct answer to the thread, not a dropped ad
Prompt of the Day
Product: [what it does]. Reader: [who has the problem]. Demonstration: [one real input and inspectable output]. Price and requirements: [facts].
For each candidate community, read its current rules and choose the permitted format before writing: standalone post, designated showcase-thread comment, or no placement. Quote the relevant promotion, AI-content, link and frequency rules; say when a rule is unstated. Do not force three eligible placements if fewer qualify.
Give each draft a specific reader benefit and one next action. State our affiliation. Separate what we actually built or measured from a proposed example. Return the format, rule source and complete draft for approval; do not publish yet.
Swap in your own product, reader, and demonstration, and this handles the rule-checking and the pitch-matching in one pass. The author’s worked example includes the dated rule quotes and the actual published posts, so you can see exactly how the output held up against real subreddit rules instead of just taking it on faith.
One catch worth flagging, straight from the author: those saved rule quotes are examples, not guarantees. Subreddit rules change. Anyone running this for a fresh launch still needs to pull current rules, not reuse someone else’s snapshot from months ago.
Worth knowing if you want the tool and not just the prompt: ThreadFox itself ships as a one-time bundle with reusable research, publishing, and tracking tools, plus a Launch Pack built around this exact brief-to-three-drafts process for one product. You don’t need an AI subscription just to claim the pack. Running the rest of the toolkit does need your own AI plan and a Reddit account.
Try It Yourself
If you’re launching anything on Reddit this week, copy the prompt above before you write a single post. Fill in your four fields, let it check the rules per subreddit, and watch how different your “same” pitch looks once it’s actually built for the room it’s walking into. Check the original thread for the full worked example and the dated rule quotes behind it.
Frequently Asked Questions
Q: Why do I need different introductions for the same product on different subreddits?
Different subreddits have distinct cultures and rules. One community might expect a technical deep-dive while another wants a quick, practical overview. As one commenter discovered, the same pitch can get roasted for being too technical in one sub or ignored for being too vague in another, ThreadFox helps you match the tone, format, and detail level to what each community actually values.
Q: What’s actually included in the Launch Pack?
You get three ready-to-publish drafts tailored to your product, complete with researched communities, quoted subreddit rules, and proven angles for each audience. The entire approach is based on ThreadFox’s brief-to-three-introductions method, so you’re getting the research and audience-specific angles done for you.
Q: Is ThreadFox a subscription or one-time purchase?
It’s a one-time purchase, $29 right now (normally $49), no monthly subscription. You keep all the included research, publishing, and tracking tools after you buy and can reuse them for future products.
Q: How long does it take to get my Launch Pack after purchase?
You’ll receive the plan and all three drafts by email within 24 hours of claiming it from your buyer library. You can claim it before or after installing ThreadFox.
Q: What do I need to run ThreadFox?
You’ll need Claude Desktop, Claude Code, or Codex, plus Chrome and your Reddit account. Your AI plan costs are separate from the ThreadFox purchase.
Three different Reddit introductions from one product brief: a copyable prompt and complete worked example
by u/investigatormaker in PromptEngineering