Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add tang-vu/social-posting-skills --skill post-redditgit clone --depth 1 https://github.com/tang-vu/social-posting-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/tang-vu/social-posting-skills/post-reddit)<a href="https://agentmods.dev/skills/tang-vu/social-posting-skills/post-reddit"><img src="https://agentmods.dev/badge/skills/tang-vu/social-posting-skills/post-reddit/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/tang-vu/social-posting-skills/post-reddit"><img src="https://agentmods.dev/badge/skills/tang-vu/social-posting-skills/post-reddit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00009 | $0.02333 |
| Opus 5 | $0.00005 | $0.01167 |
| Sonnet 5 | $0.00002 | $0.00467 |
| Haiku 4.5 | $0.00001 | $0.00233 |
Grade A, and why
post-reddit scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 218 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reddit Posting Skill
Platform Overview
Reddit is a network of communities (subreddits) organized by topic. Posts succeed when they provide genuine value to the community. Self-promotion must be balanced with authentic participation. Reddit has 1.7B+ monthly active users and is the #1 platform for community-driven content.
Account Requirements
CRITICAL: Reddit's platform-level spam filters auto-remove posts from new or low-karma accounts. This is NOT a subreddit mod rule — it is Reddit's own filter and cannot be bypassed by changing content.
- Minimum Karma: ~100 karma recommended to post freely. Some subreddits require 1,000+.
- Account Age: Many subreddits require accounts to be 7-30 days old before posting.
- Subreddit Karma: Some subs track karma earned within that specific subreddit.
- Comment vs Post Karma: Comment karma is easier to build. Start by commenting helpfully.
- External Links: Posts containing external links (GitHub, personal sites) from low-karma accounts are auto-removed by Reddit's filters — even if the content is legitimate.
- Building Karma: Comment helpfully on r/AskReddit, r/CasualConversation, r/NoStupidQuestions for 2-7 days before attempting to post links.
Platform Constraints
- Title: Max 300 characters (keep under 100 for best engagement)
- Body: Max 40,000 characters for self-posts
- Media: Images, videos, polls, links
- Flair: One flair per post (required in many subreddits — post FAILS without it)
- Links: URL posts or self-posts with inline links
- Rate Limiting: Reddit rate-limits posting frequency per account
- Cross-posting: Reddit's built-in crosspost feature is distinct from reposting
Pre-Post Checklist
Before attempting to post, the agent MUST verify:
- Check account karma: If karma < 100, WARN the user that the post will likely be auto-removed
- Read subreddit rules: Navigate to
https://www.reddit.com/r/{subreddit}/about/rulesand check requirements - Check if flair is required: Many subreddits reject posts without flair
- Check minimum karma/age: Some subs display these requirements in their rules
- Consider text-only strategy: If account has low karma, post WITHOUT links in the body — put the link in the first comment instead
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 218 lines · 9 tokens per session scan A 32c8f24ade97
post-reddit is a skill published in the GitHub repository tang-vu/social-posting-skills (9 stars, last pushed 6mo ago), licensed MIT. It adds 9 tokens to every session and 2,333 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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