GraphQL Optimization

GraphQL Optimization is a skill for Claude Code, Codex from j4flmao/agent-skills. It costs 17 tokens per session (308 once invoked), scanned A, original, MIT.

A guide to reducing the GraphQL N+1 problem, where loading a list and each item's related data causes one database query for the list plus one query per item. It uses DataLoader to batch and cache related-data requests.

In plain words
What is it for?
Use it to add DataLoader instances, batch database lookups, cache requests during a GraphQL operation, and connect loaders to Node.js resolvers.
Why use it?
It prevents many repeated database queries when GraphQL fields resolve nested relationships. Batching can fetch related records together while returning each result to the correct resolver.

Skill for Claude CodeCodex

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/j4flmao/agent-skills/graphql-optimization
Any agent
npx skills add j4flmao/agent-skills --skill graphql-optimization
Clone the repo
git clone --depth 1 https://github.com/j4flmao/agent-skills

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 GraphQL Optimization

README.md
[![agentmods](https://agentmods.dev/badge/skills/j4flmao/agent-skills/graphql-optimization.svg)](https://agentmods.dev/skills/j4flmao/agent-skills/graphql-optimization)
Your own site
<a href="https://agentmods.dev/skills/j4flmao/agent-skills/graphql-optimization"><img src="https://agentmods.dev/badge/skills/j4flmao/agent-skills/graphql-optimization.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 308 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 $0.00017 $0.00308
Opus 5 $0.00009 $0.00154
Sonnet 5 $0.00003 $0.00062
Haiku 4.5 $0.00002 $0.00031

Measured 5d ago against content hash 2c1b78e2d427, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

GraphQL Optimization 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.

skills/backend/graphql-optimization/SKILL.md · 43 lines

What it actually says

GraphQL Optimization: Solving N+1

The N+1 Problem

Without optimization, fetching a list of items and their nested relations results in 1 query for the list and N queries for the relations.

Dataloader Solution

Dataloader batches and caches requests to the database.

Diagram

%%{init: {"theme": "default", "flowchart": {"useMaxWidth": true}}}%%
graph TD
    A[Resolvers] -->|Individual Requests| B(Dataloader)
    B -->|Batched Request| C[(Database)]
    C -->|Batched Response| B
    B -->|Individual Responses| A

Node.js Example (Dataloader)

const DataLoader = require('dataloader');

const userLoader = new DataLoader(async (userIds) => {
    // Single DB query for all users
    const users = await db.query('SELECT * FROM users WHERE id IN (?)', [userIds]);
    // Ensure the results match the order of userIds
    const userMap = users.reduce((acc, user) => ({ ...acc, [user.id]: user }), {});
    return userIds.map(id => userMap[id]);
});

// In GraphQL Resolver
const resolvers = {
    Post: {
        author: (post) => userLoader.load(post.authorId)
    }
};
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 · 43 lines · 17 tokens per session scan A 2c1b78e2d427

Subscribe to this mod's changes

GraphQL Optimization is a skill published in the GitHub repository j4flmao/agent-skills (20 stars, last pushed today), licensed MIT. It adds 17 tokens to every session and 308 once invoked, about $0.0001 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 2026-08-30.

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