Agent skill

Plumx Metrics API

by wentorai in wentorai/research-plugins

Track research impact beyond citations via PlumX altmetrics API

MITAuto-check passedResearch & Science

Install Plumx Metrics API

skills CLI
$ npx skills add wentorai/research-plugins --skill plumx-metrics-api -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install wentorai/research-plugins plumx-metrics-api --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/wentorai/research-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/literature/metadata/plumx-metrics-api .claude/skills/plumx-metrics-api && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
plumx-metrics-api
GitHub stars
298
Used in
1 other repo
Token cost
~1.4k tokens
SKILL.md length
177 words
Files
1
Skills in repo
405
Repo updated
First seen
Licence
MIT

At a glance

Track research impact beyond citations via PlumX altmetrics API

  • Tasks that involve Citation management
  • SKILL.md covers Overview, Metric Categories, API Endpoints and Response Structure, plus 3 more sections
  • Calls curl; reaches api.elsevier.com; needs ELSEVIER_API_KEY and API_KEY

What it does

Plumx Metrics API is an agent skill from wentorai/research-plugins. Track research impact beyond citations via PlumX altmetrics API

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Research & Science, covering Citation management. It works with X (Twitter) and Reddit. The repository describes itself as: 350+ academic research skills, MCP configs, and plugins for Research-Claw and AI agents. The licence is MIT.

When your agent uses it

  • Tasks that involve Citation management

Example prompts

  • “/plumx-metrics-api”

Requirements

  • Python 3
  • A credential in ELSEVIER_API_KEY
  • A credential in API_KEY

What it can do on your machine

Read from SKILL.md and the folder at commit bf44b3c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • curl

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • api.elsevier.com

    Also links to:

    • dev.elsevier.com
    • plumanalytics.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • ELSEVIER_API_KEY
    • API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Plumx Metrics API loads about 1.4k tokens when it runs. Until then it costs about 20 tokens; SKILL.md has 177 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~20
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from wentorai/research-plugins at commit bf44b3c, republished under its MIT licence (© wentorai). 177 words, ~1,387 tokens.

Download SKILL.mdSave it as .claude/skills/plumx-metrics-api/SKILL.md (or your agent's skills folder).
name
plumx-metrics-api
description
Track research impact beyond citations via PlumX altmetrics API

PlumX Metrics API

Overview

PlumX (by Elsevier/Plum Analytics) tracks 5 categories of research impact metrics beyond traditional citations: Usage, Captures, Mentions, Social Media, and Citations. It covers 130M+ research artifacts including articles, datasets, presentations, and videos. Available via Elsevier's API infrastructure. Requires an Elsevier API key.

Metric Categories

CategoryWhat it measuresExamples
UsageReading/viewingAbstract views, PDF downloads, HTML views
CapturesSaving for laterMendeley readers, CiteULike bookmarks
MentionsCommentaryBlog posts, news articles, Wikipedia refs
Social MediaSharing/discussionTweets, Facebook shares, Reddit posts
CitationsFormal referencesScopus, CrossRef, PubMed citations

API Endpoints

Base URL
https://api.elsevier.com/analytics/plumx/
Get Metrics by DOI
bash
curl -H "X-ELS-APIKey: $ELSEVIER_API_KEY" \
  "https://api.elsevier.com/analytics/plumx/doi/10.1038/nature14539"
Get Metrics by Other IDs
bash
# By PubMed ID
curl -H "X-ELS-APIKey: $ELSEVIER_API_KEY" \
  "https://api.elsevier.com/analytics/plumx/pmid/25428114"

# By ISBN
curl -H "X-ELS-APIKey: $ELSEVIER_API_KEY" \
  "https://api.elsevier.com/analytics/plumx/isbn/9780262035613"

# By Scopus ID
curl -H "X-ELS-APIKey: $ELSEVIER_API_KEY" \
  "https://api.elsevier.com/analytics/plumx/scopusId/84920765826"

Response Structure

json
{
  "count_categories": [
    {
      "name": "capture",
      "total": 15432,
      "count_types": [
        {"name": "READER_COUNT", "total": 15432, "sources": [
          {"name": "Mendeley", "total": 15432}
        ]}
      ]
    },
    {
      "name": "socialMedia",
      "total": 3250,
      "count_types": [
        {"name": "TWEET_COUNT", "total": 2800},
        {"name": "FACEBOOK_COUNT", "total": 450}
      ]
    },
    {
      "name": "citation",
      "total": 2100,
      "count_types": [
        {"name": "Scopus", "total": 1800},
        {"name": "CrossRef", "total": 2100}
      ]
    },
    {
      "name": "usage",
      "total": 45000,
      "count_types": [
        {"name": "ABSTRACT_VIEWS", "total": 30000},
        {"name": "LINK_OUTS", "total": 15000}
      ]
    },
    {
      "name": "mention",
      "total": 85,
      "count_types": [
        {"name": "NEWS_COUNT", "total": 45},
        {"name": "BLOG_COUNT", "total": 25},
        {"name": "WIKIPEDIA_COUNT", "total": 15}
      ]
    }
  ]
}

Python Usage

python
import os
import requests

API_KEY = os.environ["ELSEVIER_API_KEY"]
BASE_URL = "https://api.elsevier.com/analytics/plumx"
HEADERS = {"X-ELS-APIKey": API_KEY, "Accept": "application/json"}


def get_plumx_metrics(doi: str) -> dict:
    """Get PlumX metrics for a paper by DOI."""
    resp = requests.get(
        f"{BASE_URL}/doi/{doi}",
        headers=HEADERS,
    )
    resp.raise_for_status()
    data = resp.json()

    metrics = {}
    for cat in data.get("count_categories", []):
        category_name = cat["name"]
        metrics[category_name] = {
            "total": cat["total"],
            "breakdown": {},
        }
        for ct in cat.get("count_types", []):
            metrics[category_name]["breakdown"][ct["name"]] = ct["total"]
    return metrics


def compare_impact(dois: list) -> list:
    """Compare PlumX metrics across multiple papers."""
    results = []
    for doi in dois:
        metrics = get_plumx_metrics(doi)
        results.append({
            "doi": doi,
            "citations": metrics.get("citation", {}).get("total", 0),
            "captures": metrics.get("capture", {}).get("total", 0),
            "social": metrics.get("socialMedia", {}).get("total", 0),
            "usage": metrics.get("usage", {}).get("total", 0),
            "mentions": metrics.get("mention", {}).get("total", 0),
        })
    return results


# Example: analyze a paper's multi-dimensional impact
metrics = get_plumx_metrics("10.1038/nature14539")
for category, data in metrics.items():
    print(f"\n{category.upper()} (total: {data['total']})")
    for metric_type, count in data["breakdown"].items():
        print(f"  {metric_type}: {count}")

# Example: compare two papers
# comparison = compare_impact([
#     "10.1038/nature14539",
#     "10.1126/science.aax2342",
# ])

PlumX vs Other Altmetric Services

FeaturePlumXAltmetric.comCrossref Event Data
Metric categories5 comprehensiveAttention ScoreEvents only
Coverage130M+ artifacts30M+ outputsDOI-based
Social mediaTwitter, Facebook, RedditTwitter, Reddit, NewsTwitter, Reddit, Wikipedia
Usage dataYes (views, downloads)NoNo
Capture dataYes (Mendeley readers)Mendeley readersNo
Free accessLimitedLimited widgetFull API free

References

© wentorai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/literature/metadata/plumx-metrics-api of wentorai/research-plugins.

Open the folder on GitHubat commit bf44b3c

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in wentorai/research-plugins, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Plumx Metrics API next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Plumx Metrics API compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Plumx Metrics API this skillwentorai/research-plugins2981 repos~1.4kAutomated safety check: PassMIT
Qiaomu Opencli Usagejoeseesun/qiaomu-opencli-skills993—~3kAutomated safety check: PassMIT
Pulsealirezarezvani/claude-skills28k—~3.8kAutomated safety check: PassMIT
Citation Fixerinbrainfun/inbrain1421 repos~1.5kAutomated safety check: PassCustom licence
Morning AIdavepoon/buildwithclaude3.6k—~405Automated safety check: PassMIT
Agent ReachPanniantong/Agent-Reach95k—~1.4kAutomated safety check: PassMIT

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Questions about Plumx Metrics API

What does Plumx Metrics API do?

Track research impact beyond citations via PlumX altmetrics API. Plumx Metrics API is an agent skill from wentorai/research-plugins.

When should I use Plumx Metrics API?

Plumx Metrics API fits situations like: tasks that involve Citation management.

How do I install Plumx Metrics API in Claude Code?

Run `npx skills add wentorai/research-plugins --skill plumx-metrics-api -a claude-code`. Or copy the skill folder (skills/literature/metadata/plumx-metrics-api in wentorai/research-plugins) into .claude/skills/plumx-metrics-api in your project. Claude Code loads it when a task matches its description.

How do I install Plumx Metrics API in Codex?

Run `npx skills add wentorai/research-plugins --skill plumx-metrics-api -a codex`. Or copy the skill folder (skills/literature/metadata/plumx-metrics-api in wentorai/research-plugins) into .agents/skills/plumx-metrics-api in your project. Codex loads it when a task matches its description.

Can I use Plumx Metrics API in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add wentorai/research-plugins --skill plumx-metrics-api -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/plumx-metrics-api, .gemini/skills/plumx-metrics-api, .github/skills/plumx-metrics-api and .opencode/skills/plumx-metrics-api in your project.

What does Plumx Metrics API need to run?

Going by SKILL.md and its folder, Plumx Metrics API needs the command-line tools its instructions call (curl) and credentials named ELSEVIER_API_KEY and API_KEY. Our summary lists: Python 3; A credential in ELSEVIER_API_KEY; A credential in API_KEY.

Does Plumx Metrics API access the network?

SKILL.md names 3 domains. In commands or code: api.elsevier.com; the agent is likely to contact it when it follows the instructions. As links in the text: dev.elsevier.com and plumanalytics.com. This is read from the text; nothing was executed.

Is Plumx Metrics API safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Plumx Metrics API use?

Plumx Metrics API is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Plumx Metrics API use?

About 1.4k tokens (SKILL.md is roughly 5.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Plumx Metrics API?

Skills that share tags, products or a category with Plumx Metrics API: Qiaomu Opencli Usage (joeseesun/qiaomu-opencli-skills, 993 stars), Pulse (alirezarezvani/claude-skills, 28k stars), Citation Fixer (inbrainfun/inbrain, 142 stars) and Morning AI (davepoon/buildwithclaude, 3.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Plumx Metrics API?

wentorai (a GitHub user) maintains it in wentorai/research-plugins, which has 298 GitHub stars. The repository holds 405 skills in this directory. The repository was last updated on June 19, 2026.

Source: wentorai/research-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.