documentation-lookup

documentation-lookup is a skill for Claude Code, Codex from Jamkris/everything-gemini-code. It costs 51 tokens per session (1,146 once invoked), scanned A, a copy of documentation-lookup, MIT.

A tool workflow for looking up current documentation for libraries, frameworks, and APIs instead of relying on possibly outdated knowledge.

In plain words
What is it for?
Use it when configuring or coding with frameworks and libraries such as React, Next.js, Prisma, or Supabase.
Why use it?
It reduces errors caused by changed setup instructions, API behavior, or code examples.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Codex; mentions Gemini CLI.

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/jamkris/everything-gemini-code/documentation-lookup
Any agent
npx skills add Jamkris/everything-gemini-code --skill documentation-lookup
Clone the repo
git clone --depth 1 https://github.com/Jamkris/everything-gemini-code

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 documentation-lookup

README.md
[![agentmods](https://agentmods.dev/badge/skills/jamkris/everything-gemini-code/documentation-lookup.svg)](https://agentmods.dev/skills/jamkris/everything-gemini-code/documentation-lookup)
Your own site
<a href="https://agentmods.dev/skills/jamkris/everything-gemini-code/documentation-lookup"><img src="https://agentmods.dev/badge/skills/jamkris/everything-gemini-code/documentation-lookup.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,146 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 94% copy Near-identical to another mod 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 $0.00051 $0.01146
Opus 5 $0.00026 $0.00573
Sonnet 5 $0.00010 $0.00229
Haiku 4.5 $0.00005 $0.00115

Measured 2d ago against content hash b7b274251d74, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

documentation-lookup 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 2d 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.

Origin

This is a copy

94% identical to documentation-lookup — 3 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/documentation-lookup/SKILL.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Documentation Lookup (Context7)

When the user asks about libraries, frameworks, or APIs, fetch current documentation via the Context7 MCP (tools resolve-library-id and query-docs) instead of relying on training data.

Core Concepts

  • Context7: MCP server that exposes live documentation; use it instead of training data for libraries and APIs.
  • resolve-library-id: Returns Context7-compatible library IDs (e.g. /vercel/next.js) from a library name and query.
  • query-docs: Fetches documentation and code snippets for a given library ID and question. Always call resolve-library-id first to get a valid library ID.

When to use

Activate when the user:

  • Asks setup or configuration questions (e.g. "How do I configure Next.js middleware?")
  • Requests code that depends on a library ("Write a Prisma query for...")
  • Needs API or reference information ("What are the Supabase auth methods?")
  • Mentions specific frameworks or libraries (React, Vue, Svelte, Express, Tailwind, Prisma, Supabase, etc.)

Use this skill whenever the request depends on accurate, up-to-date behavior of a library, framework, or API. Applies across harnesses that have the Context7 MCP configured (e.g. Gemini CLI, Cursor, Codex).

How it works

Step 1: Resolve the Library ID

Call the resolve-library-id MCP tool with:

  • libraryName: The library or product name taken from the user's question (e.g. Next.js, Prisma, Supabase).
  • query: The user's full question. This improves relevance ranking of results.

You must obtain a Context7-compatible library ID (format /org/project or /org/project/version) before querying docs. Do not call query-docs without a valid library ID from this step.

Step 2: Select the Best Match

From the resolution results, choose one result using:

  • Name match: Prefer exact or closest match to what the user asked for.
  • Benchmark score: Higher scores indicate better documentation quality (100 is highest).
  • Source reputation: Prefer High or Medium reputation when available.
  • Version: If the user specified a version (e.g. "React 19", "Next.js 15"), prefer a version-specific library ID if listed (e.g. /org/project/v1.2.0).

Read the full file on GitHub · 91 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. 2d ago First seen · 91 lines · 51 tokens per session scan A b7b274251d74

Subscribe to this mod's changes

documentation-lookup is a skill published in the GitHub repository Jamkris/everything-gemini-code (87 stars, last pushed 3mo ago), licensed MIT. It adds 51 tokens to every session and 1,146 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to documentation-lookup, differing in 3 lines, and is treated as a copy.