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 AtlasOmnia/donna-starter --skill reddit-browse-and-postgit clone --depth 1 https://github.com/AtlasOmnia/donna-starterWrote 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/atlasomnia/donna-starter/reddit-browse-and-post)<a href="https://agentmods.dev/skills/atlasomnia/donna-starter/reddit-browse-and-post"><img src="https://agentmods.dev/badge/skills/atlasomnia/donna-starter/reddit-browse-and-post/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/atlasomnia/donna-starter/reddit-browse-and-post"><img src="https://agentmods.dev/badge/skills/atlasomnia/donna-starter/reddit-browse-and-post.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Supply Chain · line 31 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
- medium Excessive Agency · line 21 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Data Exfiltration · line 31 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 92 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00047 | $0.01837 |
| Opus 5 | $0.00023 | $0.00919 |
| Sonnet 5 | $0.00009 | $0.00367 |
| Haiku 4.5 | $0.00005 | $0.00184 |
Grade A, and why
reddit-browse-and-post scanned grade A with 1 finding 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 9d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
Reddit's public JSON endpoints (`/r/<sub>/.json`, `/search.json`, `/comments/<id>.json`) work without credentials **when the network allows it** — but Reddit's anti-bot layer frequently returns a 403 HTML block page for How it starts
The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reddit Browse & Post
Let an agent read Reddit and publish posts using the user's own Reddit account. Everything here is account-agnostic: the user supplies their credentials through environment variables or a browser login, never through chat.
Hard rules
- Never ask the user to paste a Reddit password, token, or cookie into chat. Credentials go into environment variables (profile
.env) or the user logs in via the browser themselves. - Posting is an irreversible publish action. Draft the title and body, show the user exactly what will be posted and where, and get explicit approval before submitting. No exceptions for "the user already asked."
- Never edit, delete, vote, or mod-queue anything without explicit approval.
- Respect subreddit rules: read the sidebar / rules (or
about/rules.json) before posting to a subreddit you have not posted to. - Respect rate limits: keep requests under ~1/second for reads; wait at least a minute between post attempts. Respect 429/403 responses and back off.
- Do not post spam, affiliate links, or promotional content unless the user explicitly directs it.
- Vote manipulation, ban evasion, and buying/selling accounts are off-limits.
Reading Reddit
Reddit's public JSON endpoints (/r/<sub>/.json, /search.json, /comments/<id>.json) work without credentials when the network allows it — but Reddit's anti-bot layer frequently returns a 403 HTML block page for plain curl requests, even with a custom User-Agent. Do not fight it: try one curl probe, and if it comes back as HTML/403, switch immediately to one of the reliable paths below.
Reliable paths, in order:
- Authenticated API (recommended — works from any network): get an OAuth token (setup below) and read through
https://oauth.reddit.comwithAuthorization: bearer $TOKEN. Same endpoints, dramatically higher rate limits, and it doubles as the posting path. - Hermes browser tools — navigate to the target page; the browser session passes Reddit's checks. Good for JS-gated pages and logged-in work.
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.
- 9d ago First seen · 142 lines · 47 tokens per session scan A 844a8ed305b0
reddit-browse-and-post is a skill published in the GitHub repository AtlasOmnia/donna-starter (111 stars, last pushed 13d ago), licensed MIT. It adds 47 tokens to every session and 1,837 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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