Agent skill

Firebase Data Connect

A skill your agent uses when setting up Data Connect, writing GraphQL queries/mutations, configuring generated SDKs, handling offline, or applying security rules.

MITAuto-check passedBackend & APIs

Install Firebase Data Connect

skills CLI

$ npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install evanca/flutter-ai-rules firebase-data-connect --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/evanca/flutter-ai-rules.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/firebase-data-connect .claude/skills/firebase-data-connect && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "firebase-data-connect" agent skill from https://github.com/evanca/flutter-ai-rules/tree/main/skills/firebase-data-connect into .claude/skills/firebase-data-connect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firebase-data-connect", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/evanca/flutter-ai-rules/tree/main/skills/firebase-data-connect

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install evanca/flutter-ai-rules firebase-data-connect --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/evanca/flutter-ai-rules.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/firebase-data-connect .agents/skills/firebase-data-connect && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "firebase-data-connect" agent skill from https://github.com/evanca/flutter-ai-rules/tree/main/skills/firebase-data-connect into .agents/skills/firebase-data-connect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firebase-data-connect", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install evanca/flutter-ai-rules firebase-data-connect --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/evanca/flutter-ai-rules.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/firebase-data-connect .cursor/skills/firebase-data-connect && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "firebase-data-connect" agent skill from https://github.com/evanca/flutter-ai-rules/tree/main/skills/firebase-data-connect into .cursor/skills/firebase-data-connect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firebase-data-connect", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/evanca/flutter-ai-rules.git --path skills/firebase-data-connect

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install evanca/flutter-ai-rules firebase-data-connect --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/evanca/flutter-ai-rules.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/firebase-data-connect .gemini/skills/firebase-data-connect && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "firebase-data-connect" agent skill from https://github.com/evanca/flutter-ai-rules/tree/main/skills/firebase-data-connect into .gemini/skills/firebase-data-connect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firebase-data-connect", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install evanca/flutter-ai-rules firebase-data-connect

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/evanca/flutter-ai-rules.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/firebase-data-connect .github/skills/firebase-data-connect && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "firebase-data-connect" agent skill from https://github.com/evanca/flutter-ai-rules/tree/main/skills/firebase-data-connect into .github/skills/firebase-data-connect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firebase-data-connect", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install evanca/flutter-ai-rules firebase-data-connect --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/evanca/flutter-ai-rules.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/firebase-data-connect .opencode/skills/firebase-data-connect && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "firebase-data-connect" agent skill from https://github.com/evanca/flutter-ai-rules/tree/main/skills/firebase-data-connect into .opencode/skills/firebase-data-connect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firebase-data-connect", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: firebase-data-connect
GitHub stars: 650
Token cost: ~1.1k tokens
SKILL.md length: 280 words
Files: 1
Skills in repo: 37
Repo updated: Sep 14, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

A skill your agent uses when setting up Data Connect, writing GraphQL queries/mutations, configuring generated SDKs, handling offline, or applying security rules.

Works in 5 steps: Setup and Configuration → Executing Queries and Mutations → Performance and Caching → …
Setting up Data Connect
SKILL.md covers When to Use, 1. Setup and Configuration, 2. Executing Queries and… and 3. Performance and Caching, plus 3 more sections
Calls flutter

What it does

Firebase Data Connect is an agent skill from evanca/flutter-ai-rules. Use when setting up Data Connect, writing GraphQL queries/mutations, configuring generated SDKs, handling offline, or applying security rules.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs, covering Cross-platform mobile apps and GraphQL. It works with Firebase, GraphQL and Flutter. The repository describes itself as: Flutter AI Skills and Rules for Claude, Codex, Cursor, and Other AI-Powered IDEs. The licence is MIT.

When your agent uses it

Setting up Data Connect
Writing GraphQL queries/mutations
Configuring generated SDKs
Handling offline

Example prompts

“/firebase-data-connect”

Workflow steps

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

Setup and Configuration
Executing Queries and Mutations
Performance and Caching
Error Handling
Security

What it can do on your machine

Read from SKILL.md and the folder at commit 7b9cce2. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- flutter
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- firebase.google.com
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.

Context cost

Firebase Data Connect loads about 1.1k tokens when it runs. Until then it costs about 41 tokens; SKILL.md has 280 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~41
When it runs · the whole SKILL.md, loaded when a task matches: ~1.1k

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

Auto-check passed

The automated check found no risky patterns in SKILL.md.

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 evanca/flutter-ai-rules at commit 7b9cce2, republished under its MIT licence (© evanca). 280 words, ~1,093 tokens.

Download SKILL.mdSave it as .claude/skills/firebase-data-connect/SKILL.md (or your agent's skills folder).

name: firebase-data-connect
description: Use when setting up Data Connect, writing GraphQL queries/mutations, configuring generated SDKs, handling offline, or applying security rules.
license: MIT

Firebase Data Connect Skill

This skill defines how to correctly use Firebase Data Connect in Flutter applications.

When to Use

Use this skill when:

Setting up and configuring Firebase Data Connect in a Flutter project.
Designing schemas, queries, and mutations for Data Connect.
Implementing generated SDK calls for typed queries and mutations.
Handling network failures, data inconsistencies, and offline scenarios.
Applying security and performance best practices.

1. Setup and Configuration

Step 1: Install the package

flutter pub add firebase_data_connect

Step 2: Import and initialize

dart

import 'package:firebase_data_connect/firebase_data_connect.dart';
import 'package:firebase_core/firebase_core.dart';
import 'firebase_options.dart';

await Firebase.initializeApp(
  options: DefaultFirebaseOptions.currentPlatform,
);

Step 3: Define a schema in `dataconnect/schema/schema.gql`

graphql

type Movie @table {
  id: UUID! @default(expr: "uuidV4()")
  title: String!
  releaseYear: Int
  genre: String
  rating: Float
  description: String
}

Step 4: Define queries and mutations in `dataconnect/connector/queries.gql`

graphql

query ListMovies @auth(level: PUBLIC) {
  movies {
    id
    title
    releaseYear
    genre
    rating
  }
}

mutation CreateMovie($title: String!, $releaseYear: Int, $genre: String) @auth(level: USER) {
  movie_insert(data: {
    title: $title
    releaseYear: $releaseYear
    genre: $genre
  })
}

mutation DeleteMovie($id: UUID!) @auth(level: USER) {
  movie_delete(id: $id)
}

Step 5: Generate the typed Flutter SDK

flutterfire generate

This produces typed Dart classes for each query and mutation.

Platform support:

Platform	Support
iOS	Full
Android	Full
Web	Full
Other platforms	Not supported

2. Executing Queries and Mutations

Use the generated SDK to execute typed queries and mutations:

dart

// Execute a query
final result = await ListMoviesQuery().execute();
final movies = result.data.movies;

// Execute a mutation
await CreateMovieMutation(title: 'Inception', releaseYear: 2010, genre: 'Sci-Fi')
    .execute();

// Delete by ID
await DeleteMovieMutation(id: movieId).execute();

Real-Time Listeners

Subscribe to query changes for live updates:

dart

final subscription = ListMoviesQuery().subscribe();
subscription.listen((result) {
  final movies = result.data.movies;
  // Update UI with latest movie list
});

3. Performance and Caching

Design efficient queries requesting only the fields needed to minimize data transfer.

Implement pagination for large datasets:

graphql

query ListMoviesPaginated($limit: Int!, $offset: Int!) @auth(level: PUBLIC) {
  movies(limit: $limit, offset: $offset) {
    id
    title
    releaseYear
  }
}

Use real-time listeners judiciously to avoid unnecessary network usage.
Consider offline capabilities for critical app functionality by caching query results locally.

4. Error Handling

Wrap Data Connect calls in try/catch to handle network and validation errors:

dart

try {
  final result = await ListMoviesQuery().execute();
  return result.data.movies;
} on FirebaseException catch (e) {
  if (e.code == 'unavailable') {
    // Handle offline — return cached data
    return _localCache.getMovies();
  }
  rethrow;
}

Implement retry logic with exponential backoff for transient connection errors.
Provide meaningful error messages for data validation failures.
Monitor error rates and investigate recurring issues.

5. Security

Use @auth directives in schema to control access levels (PUBLIC, USER, NO_ACCESS).
Integrate Firebase Authentication for user-based access control.
Validate data on both client and server sides.
Follow data privacy best practices when handling user information.

References

Files

Just SKILL.md in skills/firebase-data-connect of evanca/flutter-ai-rules.

Open the folder on GitHubat commit 7b9cce2

Compare with similar skills

Firebase Data Connect next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Firebase Data Connect compared with similar skills
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Firebase Data Connect this skillevanca/flutter-ai-rules	650	—	~1.1k	Automated safety check: Pass	MIT	25 days ago
Web3authWeb3Auth/web3auth-examples	144	—	~1.4k	Automated safety check: Pass	MIT	6 days ago
Retrieving Developer Knowledgegoogle/skills	21k	—	~2k	Automated safety check: Pass	Apache-2.0	today
Data Client Setupreactive/data-client	2k	—	~2.2k	Automated safety check: Pass	Apache-2.0	today
Cometchat Flutter V6 Pushcometchat/cometchat-skills	131	—	~1.4k	Automated safety check: Pass	MIT	4 days ago
ShopifyShopify/Shopify-AI-Toolkit	592	—	~4.2k	Automated safety check: Pass	MIT	yesterday

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Architecture Feature First
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Works with

Questions about Firebase Data Connect

What does Firebase Data Connect do?

A skill your agent uses when setting up Data Connect, writing GraphQL queries/mutations, configuring generated SDKs, handling offline, or applying security rules. Firebase Data Connect is an agent skill from evanca/flutter-ai-rules. Use when setting up Data Connect, writing GraphQL queries/mutations, configuring generated SDKs, handling offline, or applying security rules.

When should I use Firebase Data Connect?

Firebase Data Connect fits situations like: setting up Data Connect; writing GraphQL queries/mutations; configuring generated SDKs; handling offline.

How do I install Firebase Data Connect in Claude Code?

Run `npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a claude-code`. Or copy the skill folder (skills/firebase-data-connect in evanca/flutter-ai-rules) into .claude/skills/firebase-data-connect in your project. Claude Code loads it when a task matches its description.

How do I install Firebase Data Connect in Codex?

Run `npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a codex`. Or copy the skill folder (skills/firebase-data-connect in evanca/flutter-ai-rules) into .agents/skills/firebase-data-connect in your project. Codex loads it when a task matches its description.

Can I use Firebase Data Connect in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add evanca/flutter-ai-rules --skill firebase-data-connect -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/firebase-data-connect, .gemini/skills/firebase-data-connect, .github/skills/firebase-data-connect and .opencode/skills/firebase-data-connect in your project.

What does Firebase Data Connect need to run?

Going by SKILL.md and its folder, Firebase Data Connect needs the command-line tools its instructions call (flutter).

Does Firebase Data Connect access the network?

SKILL.md names 1 domain. As links in the text: firebase.google.com. This is read from the text; nothing was executed.

Is Firebase Data Connect safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Firebase Data Connect use?

Firebase Data Connect is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Firebase Data Connect use?

About 1.1k tokens (SKILL.md is roughly 4.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Firebase Data Connect?

Skills that share tags, products or a category with Firebase Data Connect: Web3auth (Web3Auth/web3auth-examples, 144 stars), Retrieving Developer Knowledge (google/skills, 21k stars), Data Client Setup (reactive/data-client, 2k stars) and Cometchat Flutter V6 Push (cometchat/cometchat-skills, 131 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Firebase Data Connect?

evanca (a GitHub user) maintains it in evanca/flutter-ai-rules, which has 650 GitHub stars. The repository holds 37 skills in this directory. The repository was last updated on September 14, 2026.

Source: evanca/flutter-ai-rules on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Firebase Data Connect

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Firebase Data Connect Skill

When to Use

1. Setup and Configuration

Step 1: Install the package

Step 2: Import and initialize

Step 3: Define a schema in dataconnect/schema/schema.gql

Step 4: Define queries and mutations in dataconnect/connector/queries.gql

Step 5: Generate the typed Flutter SDK

2. Executing Queries and Mutations

Real-Time Listeners

3. Performance and Caching

4. Error Handling

5. Security

References

Files

Compare with similar skills

Similar skills

More from evanca/flutter-ai-rules

Related

Questions about Firebase Data Connect

Step 3: Define a schema in `dataconnect/schema/schema.gql`

Step 4: Define queries and mutations in `dataconnect/connector/queries.gql`