r/ContextEngineering rules, stats, and what to post

A source-backed Rankhog guide to r/ContextEngineering: public rules, community context, posting fit, and startup-promotion risk before you publish.

Members: 14,318
Community age: Created Jun 2025, 1 year
To post: No minimum in the rules
To comment: No minimum in the rules
Self-promotion: Allowed with conditionsSelf-promotion is allowed only when accompanied by meaningful context explaining what it does, how it works, and why it is relevant.
Links: Allowed with conditionsLink-only posts are not allowed. You must add context to your links.
Promo risk: HighFrom the rules, not from removal counts

Checked November 3, 2026 from the community's public Reddit pages:

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Subreddits like r/ContextEngineering

Subreddits like r/ContextEngineering are r/ChatGPT, r/singularity, r/MachineLearning, r/OpenAI, r/ArtificialInteligence, r/artificial, r/ClaudeAI and r/LocalLLaMA.

r/ContextEngineering alternatives compared: members, karma to post and self-promo rules.
Subreddit	Members	Karma to post	Self-promo
r/ChatGPT	11.7M	None listed	Banned
r/singularity	4M	None listed	Banned
r/MachineLearning	3.1M	None listed	Limited
r/OpenAI	2.9M	None listed	Limited
r/ArtificialInteligence	2M	None listed	Limited
r/artificial	1.4M	None listed	Limited
r/ClaudeAI	1.2M	None listed	Limited
r/LocalLLaMA	853.9K	None listed	Limited

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Check a post for r/ContextEngineering

By Anthony Riera, founder and operator of Rankhog.

Subreddit guides combine public Reddit source URLs, captured rules, visible verification dates, and Rankhog's account-safety workflow.

Rule summary

Be respectful: Treat others how you'd like to be treated
No spam: Spammers will be permanently banned.
No AI slop: It's reasonable to have AI tweak or organize your own writing. Not write the whole post.
No link-only posts: please add context
No Context-Free Self-Promotion: Self-promotion is allowed only when accompanied by meaningful context. Posts that simply link to your project, product, or content without explaining what it does, why it's relevant to the community, or what problem it solves will be removed. Your post should provide enough information for readers to understand the value before they click through. Simply dropping a link with "check out my project" or "here's what I built" isn't enough—tell us what it is, how it works, and why this community migh

Works well

A detailed writeup of a context problem you hit in your own AI product, how you approached it, what worked, and what did not.
A technical breakdown of how your tool structures or curates context for a generative system, written in your own words, with the link presented as a reference rather than the point of the post.
A question post asking how other builders here handle a specific context curation challenge you are facing.
A lessons learned post about improving how your system provides context to a model, shared as an engineering story rather than an advertisement.
A comparison of two approaches to feeding context into a system, grounded in what you actually observed when you tried them.

Avoid

Dropping a link to your tool with a one line caption and nothing else, because link-only posts are removed.
Posting a fully AI written article, since posts written entirely by AI are not allowed.
Sharing your project with just a link and a phrase like check out what I built, because the community requires an explanation of what it does, how it works, and why it matters before anyone clicks.
Treating the subreddit as a distribution channel for your content calendar, since spammers get permanently banned.
Posting promotional content with no context that ties it to the community.
Arguing with people in the comments, because disrespectful behavior breaks the first rule.

What r/ContextEngineering Is For

This community is for people who practice context engineering, which the description defines as applying engineering practices to the curation of AI context. The goal is giving a generative model or system all the context it needs so a task can plausibly be solved. In plain terms, the people here think hard about what information goes into an AI system before it does its job. They care about how context is built, organized, and tested. You will find builders working on AI products, engineers refining how their systems feed models, and people discussing the craft of preparing context well. It is a working community, not a casual chat room, so posts are expected to carry real substance about the problem being solved.

Rules That Matter Before Posting

Four rules decide whether a marketing post survives here. The first is “No Context-Free Self-Promotion”, which says self-promotion is allowed only when it comes with meaningful context, meaning you explain what your project does, how it works, why it is relevant to this community, and what problem it solves, all before anyone clicks. The second is “No link-only posts”, which requires you to add context around any link you share. The third is “No AI slop”, which says AI can tweak or organize your own writing but cannot write the whole post. The fourth is “No spam”, and it is the harshest one, because spammers get permanently banned. There is also “Be respectful”, which is the baseline for how you talk to people in the comments.

What To Post

The good news is that self-promotion is not banned here, it is just gated behind real explanation. If you built a tool, library, or workflow that curates AI context, you can share it, but your post has to stand on its own before the link. Explain what the thing is, how it works under the hood, what problem it solves, and why it matters to people who curate context for generative systems. Write the post yourself in your own words, and if you use AI to polish or organize your draft, that is within the rules, as long as the thinking and writing are yours. A good shape is a writeup of a problem you hit, the approach you took, what you learned, and then the link as a reference rather than the whole point. Questions and lessons learned fit this room well too, because the community exists to discuss engineering practices, not to browse product listings.

What To Avoid

The clearest way to fail here is dropping a link with a short phrase like check out my project and nothing else. The rules call this out directly and say it is not enough. The second failure is letting AI write your entire post, which the community treats as slop even if it reads fine. The third is posting the same promotional material repeatedly, because the spam rule comes with a permanent ban, not a warning. Finally, be careful with how you respond to critics. The respect rule applies to founders too, and a defensive reply to hard questions can sour a thread that was going well.

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Common questions about r/ContextEngineering

What subreddits are similar to r/ContextEngineering?

Subreddits like r/ContextEngineering are r/ChatGPT, r/singularity, r/MachineLearning, r/OpenAI, r/ArtificialInteligence, r/artificial, r/ClaudeAI and r/LocalLLaMA.

Can I post about my own product here?

Yes, but only with meaningful context. You need to explain what your project does, how it works, why it solves a problem, and why it is relevant to this community, all before the link.

Can I just share a link to my blog post?

No. Link-only posts are not allowed. You must add context around any link you share.

Can I use AI to help write my post?

Not entirely. It is reasonable to have AI tweak or organize your own writing, but if AI writes the whole post it breaks the rules and gets removed.

What happens if I post something spammy?

A single spam post is enough to get you permanently banned here, so build your post carefully and only share what genuinely fits.

How do I know what kind of post performs well here?

Not from the rules alone. The description tells you the topic, but the community has no observed top posts in our data, so start by reading what is currently on the front page before you post.