indexion-segment

indexion-segment is a skill for Claude Code from trkbt10/indexion-skills. It costs 37 tokens per session (635 once invoked), scanned A, original, Apache-2.0.

A document-splitting tool that divides text into meaningful sections for search and AI systems. RAG means retrieving relevant document passages before generating an answer, while embeddings are numeric representations used to compare meaning.

In plain words
What is it for?
Preparing documents for RAG or embedding pipelines, extracting sections, and choosing window-based, TF-IDF, punctuation-based, or hybrid segmentation with custom size and threshold settings.
Why use it?
It helps prevent long documents from being handled as one large, hard-to-search block. Different strategies and size settings let the chunks match the intended processing task.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the indexion-skills plugin — 10 skills shipped together

Good fit Preparing documents for RAG or embedding pipelines, extracting sections, and choosing window-based, TF-IDF, punctuation-based, or hybrid segmentation with custom size and threshold settings.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/trkbt10/indexion-skills/indexion-segment
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 trkbt10/indexion-skills --skill indexion-segment
Clone the repo
git clone --depth 1 https://github.com/trkbt10/indexion-skills

Made for: Claude Code.

Or install indexion-skills, the plugin that ships this one along with the rest of its 10 skills.

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 indexion-segment

README.md
[![agentmods](https://agentmods.dev/badge/skills/trkbt10/indexion-skills/indexion-segment/github.svg)](https://agentmods.dev/skills/trkbt10/indexion-skills/indexion-segment)
Your own site
<a href="https://agentmods.dev/skills/trkbt10/indexion-skills/indexion-segment"><img src="https://agentmods.dev/badge/skills/trkbt10/indexion-skills/indexion-segment/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 indexion-segment

Your own site · 80×15
<a href="https://agentmods.dev/skills/trkbt10/indexion-skills/indexion-segment"><img src="https://agentmods.dev/badge/skills/trkbt10/indexion-skills/indexion-segment.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 635 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. Third-party audits
  • Socket pass 23 Apr 2026
  • Snyk pass 23 Apr 2026
How audits are shown
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00037 $0.00635
Opus 5 $0.00018 $0.00318
Sonnet 5 $0.00007 $0.00127
Haiku 4.5 $0.00004 $0.00064

Measured 11d ago against content hash 5799d2224635, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

indexion-segment 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.

skills/indexion-segment/SKILL.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

indexion segment

Split text into contextual segments using divergence-based, TF-IDF, or punctuation strategies.

When to Use

  • User needs to chunk text for RAG or embedding pipelines
  • User wants to split a document into meaningful sections
  • User asks to segment text for processing
  • Preparing text for similarity analysis at sub-document level

Usage

# Default window divergence strategy
indexion segment <input-file> <output-dir>

# TF-IDF based segmentation
indexion segment --strategy=tfidf <input-file> <output-dir>

# Punctuation-based segmentation
indexion segment --strategy=punctuation <input-file> <output-dir>

# Custom segment sizes
indexion segment --min-size=200 --max-size=3000 --target-size=800 document.txt output/

# Custom divergence threshold
indexion segment --threshold=0.5 document.txt output/

# Adaptive threshold mode (default)
indexion segment --adaptive document.txt output/

# Hybrid NCD+TF-IDF mode
indexion segment --hybrid --ncd-weight=0.6 --tfidf-weight=0.4 document.txt output/

# Custom window size
indexion segment --window-size=5 document.txt output/

# Custom output prefix
indexion segment --prefix=chunk document.txt output/

Options

Option Default Description
--strategy=NAME window Strategy: window, tfidf, punctuation
--min-size=INT 100 Minimum segment characters
--max-size=INT 2000 Maximum segment characters
--target-size=INT 500 Target segment characters
--threshold=FLOAT 0.42 Divergence threshold
--window-size=INT 3 Window size
--adaptive true Adaptive threshold mode
--hybrid false NCD+TF-IDF hybrid mode
--ncd-weight=FLOAT 0.5 NCD weight in hybrid mode
--tfidf-weight=FLOAT 0.5 TF-IDF weight in hybrid mode
--prefix=NAME segment Output file prefix

Strategies

Strategy Description
window (default) Sliding window divergence detection
tfidf TF-IDF based topic change detection
punctuation Punctuation/sentence boundary based

Read the full file on GitHub · 77 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. 11d ago First seen · 77 lines · 37 tokens per session scan A 5799d2224635

Subscribe to this mod's changes

indexion-segment is a skill published in the GitHub repository trkbt10/indexion-skills (2 stars, last pushed 17d ago), licensed Apache-2.0. It adds 37 tokens to every session and 635 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 2026-08-31.

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