Apollo Client

What it does

When your agent uses it

• Setting up Apollo Client in a React project
• Writing GraphQL queries
• Mutations with hooks
• Configuring caching

Example prompts

• “/apollo-client”

Requirements

• Compatibility (from SKILL.md): React 18+, React 19 (Suspense/RSC). Works with Next.js, Vite, CRA, and other React frameworks.
• Pre-approved tools (allowed-tools): Bash(npm:*), Bash(npx:*), Bash(node:*), Read, Write, Edit, Glob, Grep

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:*)
  • Bash(node:*)
  • 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 typescript).

  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

  React 18+, React 19 (Suspense/RSC). Works with Next.js, Vite, CRA, and other React frameworks.

  From compatibility in the SKILL.md frontmatter.

Context cost

Apollo Client loads about 1.9k tokens when it runs, and up to ~40k if it reads all its reference files. Until then it costs about 89 tokens; SKILL.md has 598 words of instructions outside code blocks.

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

~89

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

~1.9k

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

~40k

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). 598 words, ~1,856 tokens.

name

apollo-client

description

Guide for building React applications with Apollo Client 4.x. Use this skill when: (1) setting up Apollo Client in a React project, (2) writing GraphQL queries or mutations with hooks, (3) configuring caching or cache policies, (4) managing local state with reactive variables, (5) troubleshooting Apollo Client errors or performance issues.

allowed-tools

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

compatibility

React 18+, React 19 (Suspense/RSC). Works with Next.js, Vite, CRA, and other React frameworks.

license

MIT

metadata.author

apollographql

metadata.version

1.0.0

import { gql } from "@apollo/client";
import { useQuery } from "@apollo/client/react";

const GET_USER = gql`
  query GetUser($id: ID!) {
    user(id: $id) {
      id
      name
    }
  }
`;

function UserProfile({ userId }: { userId: string }) {
  const { loading, error, data, dataState } = useQuery(GET_USER, {
    variables: { id: userId },
  });

  if (loading) return <p>Loading...</p>;
  if (error) return <p>Error: {error.message}</p>;

  // TypeScript note: for stricter type narrowing, you can also check `dataState === "complete"` before accessing data
  return <div>{data?.user.name}</div>;
}

import { gql } from "@apollo/client";
import { useMutation } from "@apollo/client/react";

const CREATE_USER = gql`
  mutation CreateUser($input: CreateUserInput!) {
    createUser(input: $input) {
      id
      name
    }
  }
`;

function CreateUserForm() {
  const [createUser, { loading, error }] = useMutation(CREATE_USER);

  const handleSubmit = async (name: string) => {
    await createUser({ variables: { input: { name } } });
  };

  return <button onClick={() => handleSubmit("John")}>Create User</button>;
}

import { Suspense } from "react";
import { useSuspenseQuery } from "@apollo/client/react";

function UserProfile({ userId }: { userId: string }) {
  const { data } = useSuspenseQuery(GET_USER, {
    variables: { id: userId },
  });

  return <div>{data.user.name}</div>;
}

function App() {
  return (
    <Suspense fallback={<p>Loading user...</p>}>
      <UserProfile userId="1" />
    </Suspense>
  );
}

© 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 13 other files (references) in skills/apollo-client of apollographql/skills.

• SKILL.md
• references/caching.md
• references/error-handling.md
• references/fragments.md
• references/integration-client.md
• references/integration-nextjs.md
• references/integration-react-router.md
• references/integration-tanstack-start.md
• references/mutations.md
• references/queries.md
• references/state-management.md
• references/suspense-hooks.md
• references/troubleshooting.md
• references/typescript-codegen.md

Open the folder on GitHubat commit 5f02fcf