Graphql Schema

What it does

When your agent uses it

• Edit GraphQL SDL
• Such as a schema.graphql file
• Including when:
• Designing a new GraphQL schema

Example prompts

• “/graphql-schema”

Requirements

• Compatibility (from SKILL.md): Any GraphQL implementation (Apollo Server, graphql-js, Yoga, etc.)
• Pre-approved tools (allowed-tools): Bash(npm:*), Bash(npx:*), Read, Write, Edit, Glob, Grep

Workflow steps

3 steps, taken from the step headings in SKILL.md.

1. 1Design for Client Needs
2. 2Be Explicit
3. 3Design for Evolution

What it can do on your machine

Read from SKILL.md and the folder at commit 5f02fcf. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash(npm:*)
  • Bash(npx:*)
  • Read
  • Write
  • Edit
  • Glob
  • Grep

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are graphql).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Any GraphQL implementation (Apollo Server, graphql-js, Yoga, etc.)

  From compatibility in the SKILL.md frontmatter.

Context cost

Graphql Schema loads about 1.3k tokens when it runs, and up to ~11k if it reads all its reference files. Until then it costs about 136 tokens; SKILL.md has 436 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~136

When it runs · the whole SKILL.md, loaded when a task matches

~1.3k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~11k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from apollographql/skills at commit 5f02fcf, republished under its MIT licence (© apollographql). 436 words, ~1,262 tokens.

name

graphql-schema

description

Guide for designing and changing GraphQL schemas following industry best practices. Use this skill whenever you create or edit GraphQL SDL, such as a `schema.graphql` file or `typeDefs`, including when: (1) designing a new GraphQL schema or API, (2) adding or changing types, fields, arguments, mutations, or descriptions in an existing schema, (3) reviewing existing schema for improvements, (4) deciding on type structures or nullability, (5) implementing pagination or error patterns, (6) ensuring security in schema design.

allowed-tools

Bash(npm:*), Bash(npx:*), Read, Write, Edit, Glob, Grep

compatibility

Any GraphQL implementation (Apollo Server, graphql-js, Yoga, etc.)

license

MIT

metadata.author

apollographql

metadata.version

1.0.2

"""
A user in the system.
"""
type User {
  id: ID!
  email: String!
  name: String
  posts(first: Int = 10, after: String): PostConnection!
  createdAt: DateTime!
}

# Output type - what clients receive
type User {
  id: ID!
  email: String!
  createdAt: DateTime!
}

# Input type - what clients send
input CreateUserInput {
  email: String!
  name: String
}

# Mutation using input type
type Mutation {
  createUser(input: CreateUserInput!): User!
}

interface Node {
  id: ID!
}

type User implements Node {
  id: ID!
  email: String!
}

type Post implements Node {
  id: ID!
  title: String!
}

union SearchResult = User | Post | Comment

type Query {
  search(query: String!): [SearchResult!]!
}

© apollographql, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 5 other files (references) in skills/graphql-schema of apollographql/skills.

• SKILL.md
• references/errors.md
• references/naming.md
• references/pagination.md
• references/security.md
• references/types.md

Open the folder on GitHubat commit 5f02fcf