datasheet-librarian

datasheet-librarian is an agent for Claude Code from nickkraakman/skidl-skills. It costs 49 tokens per session (1,122 once invoked), scanned A, original, MIT.

An assistant that finds technical specifications and datasheet documents for important electronic parts listed in a sourced bill of materials. A datasheet is the manufacturer's document describing a part's specifications and use.

In plain words
What is it for?
Use it to create part-specification summaries and download PDF datasheets for components identified by supplier or manufacturer part numbers.
Why use it?
It fills documentation gaps after parts are sourced, including when you need reliable specifications or downloadable part documents.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the skidl-skills plugin — 4 skills, 9 agents, 2 hooks shipped together

Good fit Use it to create part-specification summaries and download PDF datasheets for components identified by supplier or manufacturer part numbers.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/nickkraakman/skidl-skills/datasheet-librarian
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.

Clone the repo
git clone --depth 1 https://github.com/nickkraakman/skidl-skills

Made for: Claude Code.

Or install skidl-skills, the plugin that ships this one along with the rest of its 4 skills, 9 agents, 2 hooks.

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 datasheet-librarian

README.md
[![agentmods](https://agentmods.dev/badge/agents/nickkraakman/skidl-skills/datasheet-librarian/github.svg)](https://agentmods.dev/agents/nickkraakman/skidl-skills/datasheet-librarian)
Your own site
<a href="https://agentmods.dev/agents/nickkraakman/skidl-skills/datasheet-librarian"><img src="https://agentmods.dev/badge/agents/nickkraakman/skidl-skills/datasheet-librarian/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 datasheet-librarian

Your own site · 80×15
<a href="https://agentmods.dev/agents/nickkraakman/skidl-skills/datasheet-librarian"><img src="https://agentmods.dev/badge/agents/nickkraakman/skidl-skills/datasheet-librarian.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,122 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00049 $0.01122
Opus 5 $0.00024 $0.00561
Sonnet 5 $0.00010 $0.00224
Haiku 4.5 $0.00005 $0.00112

Measured 12d ago against content hash d1bf5c6cbc8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

datasheet-librarian scanned grade A with 1 finding 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 12d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

2. Download all PDFs in a single Bash call using parallel `curl` commands:
agents/datasheet-librarian.md · 105 lines

How it starts

The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a datasheet librarian. Your job is to gather specs and datasheets for significant parts in sourcing/sourced_bom.md, producing datasheets/<MPN>_SUMMARY.md files and (where possible) datasheets/<MPN>.pdf files.

Two-Phase Workflow

Phase 1: Gather Specs (all parts first)

For every significant part that lacks a datasheets/<MPN>_SUMMARY.md:

  1. Look up the part via MCP (jlc_get_part using LCSC#, or digikey_get_part / mouser_get_part using MPN).
  2. If MCP data is insufficient, do ONE WebFetch of the manufacturer product page to collect specs.
  3. Write datasheets/<MPN>_SUMMARY.md with key specs (Vcc range, pin names/numbers, package, typical application circuit page reference, thermal limits, key timing/current specs).

Complete ALL summaries before moving to Phase 2. This ensures specs are available even if PDF downloads fail.

Phase 2: Batch-Download PDFs

  1. Collect all datasheet URLs found during Phase 1.
  2. Download all PDFs in a single Bash call using parallel curl commands:
    curl -L -A "Mozilla/5.0" -o datasheets/MPN1.pdf "url1" &
    curl -L -A "Mozilla/5.0" -o datasheets/MPN2.pdf "url2" &
    wait
    
  3. Verify all downloads in one Bash call:
    file datasheets/MPN1.pdf datasheets/MPN2.pdf ...
    
  4. Delete any file that is not a valid PDF (rm files where file output does not say "PDF document").

Download Strategy (Strict Limits)

For each part, you have max 2 URL attempts to get the PDF:

  1. Primary: URL from MCP part data (datasheet field)
  2. Fallback: URL from manufacturer product page or WebSearch

Rules:

  • Max 2 URLs per part. If both fail → skip PDF, the summary is enough.
  • Never retry the same URL with different headers or user-agents.
  • Max 3 MCP/web calls total to find a single part's datasheet URL (e.g., 1 jlc_get_part + 1 WebFetch + 1 WebSearch = 3, done).
  • Use curl -L -A "Mozilla/5.0" for all downloads (follows redirects, sets browser UA).

What to Process vs Skip

Read the full file on GitHub · 105 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. 12d ago First seen · 105 lines · 49 tokens per session scan A d1bf5c6cbc8d

Subscribe to this mod's changes

datasheet-librarian is an agent published in the GitHub repository nickkraakman/skidl-skills (18 stars, last pushed 5mo ago), licensed MIT. It adds 49 tokens to every session and 1,122 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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