What is centrality-analysis?

A workflow for measuring which nodes matter most in a network loaded in Gephi, a desktop tool for exploring connected data. It compares several measures, such as direct connections, links between groups, and importance from influential neighbors.

Use it to find highly connected nodes, nodes that link otherwise separate groups, influential nodes, and possible weak points in a network.

It prevents different meanings of “important” from being mixed together. You can see whether a node is a hub, a bridge, or influential for another reason.

centrality-analysis — Skill for Claude Code and Codex by MattArtzAnthr

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 MattArtzAnthro/gephi-ai --skill centrality-analysis

Clone the repo

git clone --depth 1 https://github.com/MattArtzAnthro/gephi-ai

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/mattartzanthro/gephi-ai/centrality-analysis.svg)](https://agentmods.dev/skills/mattartzanthro/gephi-ai/centrality-analysis)

Your own site

<a href="https://agentmods.dev/skills/mattartzanthro/gephi-ai/centrality-analysis"><img src="https://agentmods.dev/badge/skills/mattartzanthro/gephi-ai/centrality-analysis.svg" alt="Measured on agentmods" height="20"></a>

Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 574 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 original No closer match found 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.

Model	Per session	Once invoked
Fable 5.1	$0.00053	$0.00574
Opus 5	$0.00026	$0.00287
Sonnet 5	$0.00011	$0.00115
Haiku 4.5	$0.00005	$0.00057

Measured 8d ago against content hash 86f38fbcbad5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

centrality-analysis 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.

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.

plugins/gephi-network-analysis/skills/centrality-analysis/SKILL.md · 45 lines

What it actually says

Centrality Analysis Workflow

Run comprehensive centrality analysis to identify the most important and influential nodes in the graph.

Read ../gephi/references/statistics-guide.md before interpreting scores.

Tell the user what you're doing at each step — narrate briefly before each tool call.

Steps

Health check: Call gephi_health_check. If it fails, tell the user to start Gephi and stop.
Graph info: Call gephi_get_project_info to get node/edge counts and graph type.
Compute all centrality metrics:
- Call gephi_compute_degree for degree distribution
- Call gephi_compute_betweenness for betweenness centrality, closeness, and eccentricity
- Call gephi_compute_pagerank for PageRank importance
- Call gephi_compute_eigenvector for eigenvector centrality
Query top nodes: Call gephi_query_nodes with limit 100 to retrieve node data. Sort and identify:
- Top 10 by degree (hubs)
- Top 10 by betweenness centrality (bridges)
- Top 10 by PageRank (importance)
- Nodes that appear in multiple top-10 lists (key actors)
Visualize by betweenness: Call gephi_color_by_ranking with:
- column: "betweenesscentrality"
- Light blue to dark red gradient: r_min: 200, g_min: 220, b_min: 255, r_max: 180, g_max: 0, b_max: 0
Size by PageRank: Call gephi_size_by_ranking with column "pageranks", min_size: 3, max_size: 30.
Layout: Tell the user: "Running ForceAtlas 2 layout..." Call gephi_run_layout with algorithm "ForceAtlas 2", 1000 iterations.
Report: Present a ranked table of key nodes with their centrality scores. Highlight:
- Hubs: High degree nodes
- Bridges: High betweenness, low degree (connecting different communities)
- Authorities: High PageRank / eigenvector centrality
- Vulnerabilities: Nodes whose removal would fragment the network

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.

8d ago First seen · 45 lines · 53 tokens per session scan A 86f38fbcbad5

Subscribe to this mod's changes

centrality-analysis is a skill published in the GitHub repository MattArtzAnthro/gephi-ai (22 stars, last pushed 7d ago), licensed Apache-2.0. It adds 53 tokens to every session and 574 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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