Reddit rules index · read 2026-10-04
Can you promote on r/ycombinator?
Self-promotion restricted Its rules restrict self-promotion. Posts that promote your own work are likely to be removed.
What this page is
This page quotes r/ycombinator's rules as ThreadFox read them on 2026-10-04. The quoted text is the community's; the verdict above is our reading of it. Conditions often decide whether a post fits (a required thread, flair, posting day, account age or karma), and r/ycombinator's current rules on Reddit always win over this page.
Free, for a specific product: a researched Reddit plan by email (communities whose rules fit your post, quoted and dated), or ThreadFox Lite, read-only tools an AI assistant can use to read a community's current rules itself, through your own Chrome (Claude Code: claude mcp add threadfox-lite -- uvx threadfox-lite). For an assistant that also writes and posts within each community's rules, the ThreadFox kit is $49 once.
Want to post here? Get ThreadFox ($49): your AI (Claude Desktop, Claude Code or Codex) reads a community's current rules, writes one post that fits and posts once from your own Chrome. No Claude? We'll post for you ($99 per 30-day campaign). Free: a Reddit launch plan for your product, ThreadFox Lite or the posting checklist by email.
- 206,103 members
- text posts only
- posting limited to approved users
- its rules on Reddit
News and discussion around startups and applying to Y Combinator. In 2005, Y Combinator created a new model for funding early stage startups. We invest $500,000 in every startup and work intensively with the founders for three months. For the life of their company, founders have access to the most powerful community in the world, essential advice, later-stage funding and programs, recruiting resources, and exclusive deals.
What its rules say about promotion
No self promotion.
No solicitation of surveys, DMs, external groups, etc
Posts in this sub should be applicable to other members of this community, or promote discussion. Not requests that only apply to the poster.
All 10 rules of r/ycombinator
- Read the stickied post at the top of the sub.
- Don't be a jerk.
No trolling, harassment, ad hominem. Flame wars don’t contribute to discussions, and don’t help anyone. - Use the search before making a new post.
- Use the megathreads for feedback and application discussions.
Use the megathreads for feedback and application discussions. - No self promotion.
- No hiring or co-founder search posts.
Everyone is constantly either hiring or on the lookout for a co-founder. Please use the cofounder matching tool at https://www.ycombinator.com/cofounder-matching. - No memes, politics, or shitposts.
Find another sub for that. Low effort posts will be removed. - No solicitation of surveys, DMs, external groups, etc
Posts in this sub should be applicable to other members of this community, or promote discussion. Not requests that only apply to the poster. - No AMAs.
- No discussions about VCs or other accelerators.
These posts are better fitted for r/startups or r/startupaccelerators — you’ll likely get more insights there.
What the written rules don't show
- Unpublished minimums. Many communities remove posts from new or low-karma accounts through AutoModerator settings that are not on the rules page, often before a moderator sees them.
- Reddit's own filters. Reddit's site-wide spam filters can remove posts from accounts that mostly share links to their own site, in any community.
- The community's norms. Many communities see themselves as peers, not an audience: post where you already take part, and make the post worth reading without the link.
Similar communities
Let your AI read the rules before it posts.
ThreadFox reads a community's current rules, writes a post that fits them, posts once with Reddit's Brand affiliate tag and checks it stayed up. The free ThreadFox Lite reads rules too.
Get ThreadFox · $49Try Lite freeFree checklist by emailAll 2,290 communities
The verdict is our reading of r/ycombinator's rule text on 2026-10-04. Rules change and moderators decide: read the current rules before you post. Not affiliated with Reddit or r/ycombinator.