libraium-first

libraium-first is a skill for Claude Code, Codex from nel-neru/LibrAIum. It costs 57 tokens per session (992 once invoked), scanned A, original, MIT.

A library-first dependency-selection rule for LibrAIum. Before recommending a framework, library, database, or tool, an agent consults the user's curated repository library and its reception notes, which summarize real-world feedback and limitations.

In plain words
What is it for?
Use it when choosing a project's stack, comparing technologies, planning dependencies, or asking what tool to use for a specific job.
Why use it?
It bases technology choices on the user's tracked projects and documented experience rather than on generic popularity or memory.

Skill for Claude CodeCodex

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

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/nel-neru/libraium/libraium-first
Any agent
npx skills add nel-neru/LibrAIum --skill libraium-first
Clone the repo
git clone --depth 1 https://github.com/nel-neru/LibrAIum

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 libraium-first

README.md
[![agentmods](https://agentmods.dev/badge/skills/nel-neru/libraium/libraium-first.svg)](https://agentmods.dev/skills/nel-neru/libraium/libraium-first)
Your own site
<a href="https://agentmods.dev/skills/nel-neru/libraium/libraium-first"><img src="https://agentmods.dev/badge/skills/nel-neru/libraium/libraium-first.svg" alt="Measured on agentmods" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 992 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00057 $0.00992
Opus 5 $0.00028 $0.00496
Sonnet 5 $0.00011 $0.00198
Haiku 4.5 $0.00006 $0.00099

Measured 5d ago against content hash 52826c6ddb33, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

libraium-first 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 5d 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.

integrations/claude/skills/libraium-first/SKILL.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Library-first dependency decisions

The user maintains LibrAIum: a curated shelf of GitHub repositories they track, each carrying a synthesized Reception section — third-party, real-world signal drawn from the community: recurring complaints (with issue numbers and reaction counts), notable adopters, known limitations, and what people migrate to/from. A few entries the user has used firsthand also carry optional Personal Notes. It is exposed through the libraium MCP server. Treat Reception as vetted, sourced evidence — it outranks your training-data instinct about what is merely popular, because it captures what actually bites in production and what people abandon.

Rules

  1. Consult before proposing. Before recommending any framework, library, database, or tool, call suggest_for_new_project (describe what is being built; put constraints like "local-first, Python" in goals). For a specific known technology, use search_repos instead. Do this even when you are confident — the point is what the user has chosen to track and the sourced Reception behind it.

  2. Quote the Reception. Each suggestion carries reception — sourced third-party signal. Surface the relevant parts in your recommendation: recurring complaints, known limitations, and migration signal, with the citations attached. A recommendation that ignores a documented limitation in the Reception is wrong. When an entry also has personal_notes (the user's own firsthand take — present only on a few entries), quote those too; they are rarer and carry the user's specific opinion.

  3. Respect status. status: stale or archived is an explicit warning — never recommend such an entry without flagging it, and prefer the alternatives the response suggests (or search the same category for an active entry sharing its tags).

  4. A silent library is an answer. Zero results means the library does not track this space. Say so, then recommend from general knowledge clearly labeled as unvetted, and offer to shelve the eventual pick (rule 5).

Read the full file on GitHub · 68 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. 5d ago First seen · 68 lines · 57 tokens per session scan A 52826c6ddb33

Subscribe to this mod's changes

libraium-first is a skill published in the GitHub repository nel-neru/LibrAIum (0 stars, last pushed 2d ago), licensed MIT. It adds 57 tokens to every session and 992 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 2026-08-31.

Related

Other skills, from other repositories

vault

Search, read, write, and manage files in the Kept conversation vault. Use when the user asks about past conversations, wants to save notes, needs to find specific content, or wants to organize their vault.

egroup-labs/kept · 45 tokens

seller-research

Use when researching a merchant, storefront, marketplace seller, or merchant of record for a buying decision, especially when identity, refund terms, fulfillment, counterfeit risk, domain history, or independent buyer outcomes are uncertain.

cinderline/northcinder · 46 tokens

shodh-memory

Persistent memory system for AI agents. Use this skill to remember context across conversations, recall relevant information, and build long-term knowledge. Activate when you need to store decisions, learnings, errors, or context that should persist beyond the current session.

varun29ankuS/shodh-memory · 53 tokens

vault-for-llm

Connect OpenClaw to Vault Agent Memory as a local-first governed project memory layer. Search first, then bounded-read cited source ranges; propose new memories as candidates instead of writing directly into active memory.

zycaskevin/Vault-Agent-Memory · 46 tokens

anyr

Use when reading, searching, creating, or updating Anytype documents (objects, spaces, types, properties, files, chats) from the command line with the configured anyr CLI, including JSON output patterns for scripting.

stevelr/anytype · 46 tokens

skills

Your next session starts cold. No memory of what you built, what broke, what you decided. Every memory you write is a gift to that future session. The richer the memory, the less time re-learning.

jackccrawford/Geniuz · 0 tokens