graphql-schema

graphql-schema is a skill for Claude Code from berkcangumusisik/claude-code-practices. It costs 21 tokens per session (393 once invoked), scanned A, original, MIT.

A GraphQL API design and review helper. GraphQL is a way for clients to request exactly the data they need through a typed API.

In plain words
What is it for?
Use it to create or review types, queries, mutations, resolver templates, input validation, error types, pagination, and DataLoader setup. DataLoader batches related database requests to avoid repeated queries.
Why use it?
It helps catch slow data fetching, overly exposed fields, missing pagination, weak error handling, and other schema design problems before they affect clients.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

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/berkcangumusisik/claude-code-practices/graphql-schema
Any agent
npx skills add berkcangumusisik/claude-code-practices --skill graphql-schema
Clone the repo
git clone --depth 1 https://github.com/berkcangumusisik/claude-code-practices

Made for: Claude Code.

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-schema

README.md
[![agentmods](https://agentmods.dev/badge/skills/berkcangumusisik/claude-code-practices/graphql-schema.svg)](https://agentmods.dev/skills/berkcangumusisik/claude-code-practices/graphql-schema)
Your own site
<a href="https://agentmods.dev/skills/berkcangumusisik/claude-code-practices/graphql-schema"><img src="https://agentmods.dev/badge/skills/berkcangumusisik/claude-code-practices/graphql-schema.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 393 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 $0.00021 $0.00393
Opus 5 $0.00010 $0.00197
Sonnet 5 $0.00004 $0.00079
Haiku 4.5 $0.00002 $0.00039

Measured 6d ago against content hash ccc49f009f34, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

graphql-schema 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 6d 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/graphql-schema/SKILL.md · 52 lines

What it actually says

GraphQL Schema

Target: $ARGUMENTS

  1. Detect GraphQL setup:
cat package.json | grep -E '"graphql"|"apollo-server"|"pothos"|"nexus"|"typegraphql"|"@graphql-yoga"'
ls src/graphql/ src/schema/ 2>/dev/null | head -10
  1. If reviewing existing schema:

    • N+1 problem: resolvers fetching data per parent field
    • Missing DataLoader for batched queries
    • Over-exposed fields (internal IDs, timestamps that shouldn't be public)
    • Missing pagination (connections pattern)
    • Mutations not returning the updated entity
  2. If generating new schema for $ARGUMENTS:

type $ARGUMENTS {
  id: ID!
  # ... fields
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Query {
  $ARGUMENTS(id: ID!): $ARGUMENTS
  ${ARGUMENTS}s(first: Int, after: String, filter: ${ARGUMENTS}Filter): ${ARGUMENTS}Connection!
}

type Mutation {
  create$ARGUMENTS(input: Create${ARGUMENTS}Input!): ${ARGUMENTS}MutationResult!
  update$ARGUMENTS(id: ID!, input: Update${ARGUMENTS}Input!): ${ARGUMENTS}MutationResult!
  delete$ARGUMENTS(id: ID!): Boolean!
}
  1. Generate resolver stubs and DataLoader for the entity.

  2. Add input validation and proper error types.

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. 6d ago First seen · 52 lines · 21 tokens per session scan A ccc49f009f34

Subscribe to this mod's changes

graphql-schema is a skill published in the GitHub repository berkcangumusisik/claude-code-practices (10 stars, last pushed 4mo ago), licensed MIT. It adds 21 tokens to every session and 393 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 2026-08-31.

Related

Other skills, from other repositories

x402

Set up Browser Use Cloud payments with x402 — pay per request from a crypto wallet (USDC on Base mainnet), no signup or API key. Two setups it works out up front — "just use it" (set up a wallet so you or Claude Code can run cloud browser tasks paid from the wallet — Claude writes and runs throwaway scripts, nothing…

browser-use/browser-use · 175 tokens

cloud

Documentation reference for using Browser Use Cloud — the hosted API and SDK for browser automation. Use this skill whenever the user needs help with the Cloud REST API (v2, v3, or v4), browser-use-sdk (Python or TypeScript), X-Browser-Use-API-Key authentication, cloud sessions, browser profiles, profile sync, CDP…

browser-use/browser-use · 177 tokens

open-source

Documentation reference for writing Python code using the browser-use open-source library. Use this skill whenever the user needs help with Agent, Browser, or Tools configuration, is writing code that imports from browseruse, asks about @sandbox deployment, supported LLM models, Actor API, custom tools, lifecycle…

browser-use/browser-use · 137 tokens

authentication-patterns

OAuth 2.0, JWT, SSO, MFA, NextAuth/Clerk/Supabase Auth implementation patterns.

travisjneuman/.claude · 28 tokens

email-systems

Transactional email (Resend, SendGrid, SES), templates (React Email, MJML), deliverability (SPF/DKIM/DMARC), and inboxing best practices. Use when building email infrastructure, designing templates, or troubleshooting deliverability.

travisjneuman/.claude · 55 tokens

event-driven-architecture

Kafka, RabbitMQ, SQS/SNS, event sourcing, CQRS, saga patterns, dead letter queues, and idempotency. Use when designing asynchronous systems, implementing message-driven workflows, or building event streaming pipelines.

travisjneuman/.claude · 50 tokens