Registry indexed
Use when building AI workflows, tool calling agents, structured outputs, or LLM pipelines using the Genkit Dart SDK.
Use when building AI workflows, tool calling agents, structured outputs, or LLM pipelines using the Genkit Dart SDK.
Source documentation, not instructions for this website. Review permissions before running any commands.
Build structured, type-safe, and observable AI-powered workflows and agents using the Genkit Dart SDK.
pubspec.yaml:
dependencies:
genkit: ^0.1.0-preview # Replace with the latest version
google_generative_ai: ^0.4.0
export GEMINI_API_KEY="your_api_key_here"
Genkit separates model invocation and prompt structure from core application logic using structured prompts.
import 'package:genkit/genkit.dart';
import 'package:google_generative_ai/google_generative_ai.dart';
void main() async {
// Initialize Genkit
final ai = Genkit(
model: 'gemini-1.5-flash',
apiKey: String.fromEnvironment('GEMINI_API_KEY'),
);
// Invoke the model with a simple prompt
final response = await ai.generate(
prompt: 'Explain the concept of monads in Dart.',
);
print(response.text);
}
Genkit agents utilize Tools to execute tasks (e.g., database queries, web scraping, mathematical calculations).
import 'package:genkit/genkit.dart';
// 1. Define schemas for input and output
final additionInputSchema = Schema.object({
'a': Schema.number(description: 'First number'),
'b': Schema.number(description: 'Second number'),
});
// 2. Define the tool
final addTool = ai.defineTool(
name: 'addNumbers',
description: 'Adds two numbers together.',
inputSchema: additionInputSchema,
action: (input) async {
final a = input['a'] as num;
final b = input['b'] as num;
return {'result': a + b};
},
);
Flows are executable pipelines that support structured input and output schemas, built-in telemetry, and error handling.
import 'package:genkit/genkit.dart';
// Define the input and output schemas
final jokeRequestSchema = Schema.object({
'topic': Schema.string(description: 'The topic for the joke'),
});
final jokeResponseSchema = Schema.object({
'setup': Schema.string(),
'punchline': Schema.string(),
});
// Define the Flow
final jokeFlow = ai.defineFlow(
name: 'jokeFlow',
inputSchema: jokeRequestSchema,
outputSchema: jokeResponseSchema,
action: (input) async {
final topic = input['topic'] as String;
final response = await ai.generate(
prompt: 'Tell me a structured joke about $topic.',
responseSchema: jokeResponseSchema,
);
return response.structuredOutput!;
},
);
void main() async {
// Run the flow
final result = await jokeFlow.run({'topic': 'coding'});
print('Setup: ${result['setup']}');
print('Punchline: ${result['punchline']}');
}
inputSchema and outputSchema for tools and flows to ensure the LLM generates correctly structured arguments.try-catch blocks and return error details gracefully so the agent can self-correct.name: dart-genkit
description: Use when building AI workflows, tool calling agents, structured outputs, or LLM pipelines using the Genkit Dart SDK.
metadata:
platforms: "dart"
languages: "dart"
category: "ai"---
name: dart-genkit
description: Use when building AI workflows, tool calling agents, structured outputs, or LLM pipelines using the Genkit Dart SDK.
metadata:
platforms: "dart"
languages: "dart"
category: "ai"
---
# AI Engineering with Genkit Dart
Build structured, type-safe, and observable AI-powered workflows and agents using the **Genkit Dart SDK**.
## Contents
- [Project Setup](#project-setup)
- [Defining Prompts & Models](#defining-prompts--models)
- [Creating Custom Tools](#creating-custom-tools)
- [Orchestrating Flows](#orchestrating-flows)
- [Best Practices](#best-practices)
---
## Project Setup
1. Add the Genkit package to your Dart project's `pubspec.yaml`:
```yaml
dependencies:
genkit: ^0.1.0-preview # Replace with the latest version
google_generative_ai: ^0.4.0
```
2. Set up your API credentials (e.g., Gemini API key) in your environment:
```bash
export GEMINI_API_KEY="your_api_key_here"
```
---
## Defining Prompts & Models
Genkit separates model invocation and prompt structure from core application logic using structured prompts.
```dart
import 'package:genkit/genkit.dart';
import 'package:google_generative_ai/google_generative_ai.dart';
void main() async {
// Initialize Genkit
final ai = Genkit(
model: 'gemini-1.5-flash',
apiKey: String.fromEnvironment('GEMINI_API_KEY'),
);
// Invoke the model with a simple prompt
final response = await ai.generate(
prompt: 'Explain the concept of monads in Dart.',
);
print(response.text);
}
```
---
## Creating Custom Tools
Genkit agents utilize **Tools** to execute tasks (e.g., database queries, web scraping, mathematical calculations).
```dart
import 'package:genkit/genkit.dart';
// 1. Define schemas for input and output
final additionInputSchema = Schema.object({
'a': Schema.number(description: 'First number'),
'b': Schema.number(description: 'Second number'),
});
// 2. Define the tool
final addTool = ai.defineTool(
name: 'addNumbers',
description: 'Adds two numbers together.',
inputSchema: additionInputSchema,
action: (input) async {
final a = input['a'] as num;
final b = input['b'] as num;
return {'result': a + b};
},
);
```
---
## Orchestrating Flows
Flows are executable pipelines that support structured input and output schemas, built-in telemetry, and error handling.
```dart
import 'package:genkit/genkit.dart';
// Define the input and output schemas
final jokeRequestSchema = Schema.object({
'topic': Schema.string(description: 'The topic for the joke'),
});
final jokeResponseSchema = Schema.object({
'setup': Schema.string(),
'punchline': Schema.string(),
});
// Define the Flow
final jokeFlow = ai.defineFlow(
name: 'jokeFlow',
inputSchema: jokeRequestSchema,
outputSchema: jokeResponseSchema,
action: (input) async {
final topic = input['topic'] as String;
final response = await ai.generate(
prompt: 'Tell me a structured joke about $topic.',
responseSchema: jokeResponseSchema,
);
return response.structuredOutput!;
},
);
void main() async {
// Run the flow
final result = await jokeFlow.run({'topic': 'coding'});
print('Setup: ${result['setup']}');
print('Punchline: ${result['punchline']}');
}
```
---
## Best Practices
- **Exhaustive Schema Definitions**: Always define explicit `inputSchema` and `outputSchema` for tools and flows to ensure the LLM generates correctly structured arguments.
- **Environment Isolation**: Do not hardcode API keys. Use environment variables or secure credential storage.
- **Trace Observability**: Enable Genkit's trace observability in development to inspect agent decision trees and tool invocations.
- **Error Handling**: Wrap tool execution in standard `try-catch` blocks and return error details gracefully so the agent can self-correct.
Free to get does not mean free to run. Price labels are not safety ratings. Submit pricing information →
Skill source recorded
Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.
Review before install: Avoid automatic install
License: MIT
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
Version reported in registry metadata; check source releases before relying on it.
Quality
53/100
Needs review
Trust
57/100
Do not auto-install
Audit
68/100
Needs review
Copies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
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