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 MassLab-SII/open-agent-skills --skill redditgit clone --depth 1 https://github.com/MassLab-SII/open-agent-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/masslab-sii/open-agent-skills/reddit)<a href="https://agentmods.dev/skills/masslab-sii/open-agent-skills/reddit"><img src="https://agentmods.dev/badge/skills/masslab-sii/open-agent-skills/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/masslab-sii/open-agent-skills/reddit"><img src="https://agentmods.dev/badge/skills/masslab-sii/open-agent-skills/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 | $0.00043 | $0.01575 |
| Opus 5 | $0.00022 | $0.00788 |
| Sonnet 5 | $0.00009 | $0.00315 |
| Haiku 4.5 | $0.00004 | $0.00158 |
Grade A, and why
reddit-browser-automation 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 — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reddit/Postmill Browser Automation Skill
This skill is based on Playwright MCP tools, providing automation capabilities for Reddit-like forum platforms (Postmill).
Core Concepts
In forum automation, we distinguish two types of operations:
- Skill: Meaningful combinations of multiple tool calls, encapsulated as independent Python scripts
- Basic Tools: Single function calls used for atomic operations.
I. Skills
1. Sign Up
Use Cases:
- Create a new account on the forum after cilcing "Sign up" button
- Register with specific username and password
Usage:
# Usage:
# python sign_up.py <username> <password> <username_ref> <password_ref> <password_repeat_ref> <submit_ref>
# Example:
python sign_up.py "AIDataAnalyst2025" "SecurePass123!" e35 e43 e44 e54
2. Create Post
Use Cases:
- Submit a new post/submission to a forum aftering clicking "Submit" button
- Create text posts with title and body
Usage:
# Usage:
# python create_post.py <title> <body> <title_ref> <body_ref> <create_btn_ref>
# Example:
python create_post.py "My Post Title" "Post body content here" e58 e63 e82
Note: The body text can contain multiple lines. Each line should start with a dash (-) for proper formatting.
3. Create Forum
Use Cases:
- Create a new forum/community after clicking "Create forum" button
- Set up forum name, title, description, and sidebar
Usage:
# Usage:
# python create_forum.py <name> <title> <description> <sidebar> <name_ref> <title_ref> <desc_ref> <sidebar_ref> <create_btn_ref>
# Example:
python create_forum.py "BudgetEuropeTravel" "Budget Travel Europe" "Community for sharing money-saving tips" "Share your best deals!" e51 e56 e61 e69 e83
4. Create Wiki
Use Cases:
- Create a wiki page for a forum after clicking "Create new page" button
- Set up wiki URL path, title, and content
Usage:
# Usage:
# python create_wiki.py <url_path> <title> <body> <url_ref> <title_ref> <body_ref> <save_btn_ref>
# Example:
python create_wiki.py "europe-travel-guide" "Complete Budget Travel Guide" "Wiki content here" e51 e56 e62 e69
What ships with it
8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- scripts/browser_client.py 6.4 KB runs code
- scripts/browser_server.py 8.6 KB runs code
- scripts/create_forum.py 3.4 KB runs code
- scripts/create_post.py 3.0 KB runs code
- scripts/create_wiki.py 2.8 KB runs code
- scripts/run_browser_ops.py 5.9 KB runs code
- scripts/sign_up.py 2.8 KB runs code
- scripts/utils.py 13 KB runs code
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 · 245 lines · 43 tokens per session scan A 89a607753d4b
reddit-browser-automation is a skill published in the GitHub repository MassLab-SII/open-agent-skills (133 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 43 tokens to every session and 1,575 once invoked, about $0.0002 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 2026-08-30.
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