nature-citation

nature-citation is a skill for Claude Code, Codex from hamzabellouch/agent-skills. It costs 236 tokens per session (1,041 once invoked), scanned A, a copy of nature-citation, MIT.

A citation assistant for adding references to manuscript passages using papers from selected Nature, Science, and Cell journals. It splits long text into smaller claims and checks them against a publication date range.

In plain words
What is it for?
Use it to prepare or revise supported manuscript text and export references in a format ready for a reference manager.
Why use it?
It reduces the work of finding suitable high-profile sources for each claim and helps keep citations within the specified journal and time boundaries.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to prepare or revise supported manuscript text and export references in a format ready for a reference manager.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hamzabellouch/agent-skills/academic-nature-nature-citation
Install

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.

Any agent
npx skills add hamzabellouch/agent-skills --skill academic-nature-nature-citation
Clone the repo
git clone --depth 1 https://github.com/hamzabellouch/agent-skills

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for nature-citation

README.md
[![agentmods](https://agentmods.dev/badge/skills/hamzabellouch/agent-skills/academic-nature-nature-citation/github.svg)](https://agentmods.dev/skills/hamzabellouch/agent-skills/academic-nature-nature-citation)
Your own site
<a href="https://agentmods.dev/skills/hamzabellouch/agent-skills/academic-nature-nature-citation"><img src="https://agentmods.dev/badge/skills/hamzabellouch/agent-skills/academic-nature-nature-citation/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.

agentmods 80×15 button for nature-citation

Your own site · 80×15
<a href="https://agentmods.dev/skills/hamzabellouch/agent-skills/academic-nature-nature-citation"><img src="https://agentmods.dev/badge/skills/hamzabellouch/agent-skills/academic-nature-nature-citation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 236 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,041 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 94% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00236 $0.01041
Opus 5 $0.00118 $0.00521
Sonnet 5 $0.00047 $0.00208
Haiku 4.5 $0.00024 $0.00104

Measured 8d ago against content hash 58928bef2e20, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

nature-citation 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 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/nature_citation.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

94% identical to nature-citation — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

Academic and Scientific Research/academic-nature-nature-citation/SKILL.md · 71 lines

How it starts

The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Nature Citation — Router

This skill is split into two layers:

  • A static layer under static/ that holds versioned, reusable content fragments (core principles and scope, the Chinese-user operating mode, and the citation workflow).
  • A dynamic layer (this file plus manifest.yaml) that loads the core every time and reaches for heavier material only when a step needs it.

Do not try to apply the citation logic from memory or from this router. Always load fragments from disk as described below.

Routing protocol

Follow these four steps every time the skill is invoked.

1. Load the manifest and the core layer

Read manifest.yaml. Then read every file listed under always_load:

  • static/core/principles.md — what the skill produces, the strict journal scope, the source hierarchy, and the search-quality rules.
  • static/core/chinese-mode.md — how to operate when the user writes in Chinese or asks for Nature系列/CNS及子刊 style support.
  • static/core/workflow.md — the seven-step workflow and the final report format.

2. No content axis — confirm scope and language inline

Unlike the other nature-* skills, nature-citation has no fragment axis. Its variation is runtime parameters, not different content bodies:

  • journal scopeNature系列 / CNS / CNS及子刊 / flagship-only. Read it from the user's wording (see core/principles.md) and pass it to the script as --scope.
  • user language — if the user writes Chinese, follow core/chinese-mode.md (Chinese notes, English search queries).
  • input length — if there are more than ~10 segments, switch to the batched long-article strategy in references/script-usage.md.

State the detected scope and date limits in one short line before searching.

3. Run the workflow

Follow the seven steps in core/workflow.md: segment, parse, search, evaluate support conservatively, export one reference-manager file, generate review artifacts when useful, and report with the HTML browser path first. Prefer scripts/nature_citation.py for the search/export when internet access is available; open references/script-usage.md for its full flag list and the long-article batch strategy.

Read the full file on GitHub · 71 lines

Changes

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.

  1. 8d ago First seen · 71 lines · 236 tokens per session scan A 58928bef2e20

Subscribe to this mod's changes

nature-citation is a skill published in the GitHub repository hamzabellouch/agent-skills (4 stars, last pushed 1mo ago), licensed MIT. It adds 236 tokens to every session and 1,041 once invoked, about $0.0012 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to nature-citation, differing in 4 lines, and is treated as a copy.

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