vector-databases

vector-databases is a skill for Claude Code, Codex from eyadsibai/ltk. It costs 66 tokens per session (733 once invoked), scanned A, original, no licence file.

A guide to vector databases, which store numerical representations of content so similar items can be found by meaning. It covers systems such as Chroma, FAISS, and Qdrant.

In plain words
What is it for?
Use it for embedding storage, semantic search, nearest-neighbour search, vector indexes, and RAG retrieval.
Why use it?
It provides a way to retrieve related documents or other content when an exact keyword match is not enough.

Skill for Claude CodeCodex

Part of the ltk plugin — 113 skills, 30 commands, 50 agents, 3 MCP servers shipped together

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.

agentmods
npx agentmods add skills/eyadsibai/ltk/vector-databases
Any agent
npx skills add eyadsibai/ltk --skill vector-databases
Clone the repo
git clone --depth 1 https://github.com/eyadsibai/ltk

Made for: Claude Code, Codex.

Or install ltk, the plugin that ships this one along with the rest of its 113 skills, 30 commands, 50 agents, 3 MCP servers.

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 vector-databases

README.md
[![agentmods](https://agentmods.dev/badge/skills/eyadsibai/ltk/vector-databases.svg)](https://agentmods.dev/skills/eyadsibai/ltk/vector-databases)
Your own site
<a href="https://agentmods.dev/skills/eyadsibai/ltk/vector-databases"><img src="https://agentmods.dev/badge/skills/eyadsibai/ltk/vector-databases.svg" alt="Measured on agentmods" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 733 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00066 $0.00733
Opus 5 $0.00033 $0.00367
Sonnet 5 $0.00013 $0.00147
Haiku 4.5 $0.00007 $0.00073

Measured yesterday against content hash a314dbd258f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vector-databases 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 yesterday.

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/ltk-data/skills/vector-databases/SKILL.md · 92 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. yesterday First seen · 92 lines · 66 tokens per session scan A a314dbd258f8

Subscribe to this mod's changes

vector-databases is a skill published in the GitHub repository eyadsibai/ltk (7 stars, last pushed 7mo ago), with no licence file. It adds 66 tokens to every session and 733 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 2026-09-03.

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