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 agentmods add skills/frontisai/naturebench/paper-filternpx skills add FrontisAI/NatureBench --skill paper-filtergit clone --depth 1 https://github.com/FrontisAI/NatureBenchWrote 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/frontisai/naturebench/paper-filter)<a href="https://agentmods.dev/skills/frontisai/naturebench/paper-filter"><img src="https://agentmods.dev/badge/skills/frontisai/naturebench/paper-filter.svg" alt="Measured on agentmods" 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 | $0.00054 | $0.01304 |
| Opus 5 | $0.00027 | $0.00652 |
| Sonnet 5 | $0.00011 | $0.00261 |
| Haiku 4.5 | $0.00005 | $0.00130 |
Grade A, and why
paper-filter 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 6d 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 — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Paper Filter Skill
Filter CNS papers for machine learning task extraction suitability.
Input Requirements
Before invoking this skill, provide:
- Paper Folder Path: Directory containing original paper files and preprocessed data
- Output Directory: Directory to store filtering results
Paper folder structure:
{paper_id}.pdf: Original paper PDF file{paper_id}.html: HTML version of the paperpreprocessed/: Preprocessed data subdirectory, containing:text.md: Full paper textfigures/: Figures directorytables/: Tables directorylinks.json: List of links from the paper (with section identifiers and surrounding context)
Supplementary Materials
preprocessed/text.md may not include supplementary content. When the main text references supplementary materials (tables, figures, or supplementary notes/text) for core results, metric details, evaluation protocols, or experimental details, and the information is not present in preprocessed/text.md:
- Check
preprocessed/links.jsonfor supplementary material links (section:supplementary_information) - Download supplementary PDFs/files to a temporary location
- Use the original paper PDF/HTML as fallback if supplementary links are not separately available
- Extract relevant information (score tables, metric details, evaluation protocols, experimental details, and dataset descriptions)
- Delete downloaded supplementary files after extraction is complete
Workflow
Phase 1: Understand Core Definitions
Read references/core_definitions.md to understand the basic criteria and requirements for task extraction.
Core definitions describe the structure of the candidate task tuple T = (A, Data, M, S, B):
- A (Algorithm): The core algorithm or strategy proposed by the paper
- Data: The data environment involved in the task, divided into D_dev (development data) and D_eval (evaluation data)
- M (Metric): The metric function used to measure result quality
- S (SOTA): The performance values of the proposed core algorithm on evaluation metrics
- B (Baseline): The baseline metric values reported in the paper (optional, may not exist)
What ships with it
9 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.
- references/core_definitions.md 6.9 KB
- references/estimate_size_usage.md 4.5 KB
- references/level1_rules.md 7.4 KB
- references/level2_rules.md 6.2 KB
- references/level3_rules.md 19 KB
- references/output_schema.md 12 KB
- references/validate_links_usage.md 4.1 KB
- scripts/estimate_size.py 20 KB runs code
- scripts/validate_links.py 22 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.
- 6d ago First seen · 115 lines · 54 tokens per session scan A 16779320945f
paper-filter is a skill published in the GitHub repository FrontisAI/NatureBench (112 stars, last pushed yesterday), licensed MIT. It adds 54 tokens to every session and 1,304 once invoked, about $0.0003 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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