# Documentation Change Analysis
## Summary
The URL for the "Claude Cookbook" card in the get-started.md file has been updated from a GitHub link to a new platform-specific link. This change likely reflects a shift in how resources are organized or accessed.
## Key Changes
- **URL Update**: Changed from `https://github.com/anthropics/anthropic-cookbook` to `https://platform.claude.com/cookbooks`.
- **Resource Location**: The new link directs users to a platform-specific site rather than a GitHub repository.
## Impact
- **Medium**: This change improves documentation by ensuring developers access the most relevant and possibly updated resources directly from the platform, enhancing their learning experience with interactive Jupyter notebooks. However, it does not introduce new features or break existing functionality.
# Get started with Claude¶
¶
Make your first API call to Claude and build a simple web search assistant¶
¶
---¶
¶
## Prerequisites¶
¶
- An Anthropic [Console account](/)¶
- An [API key](/settings/keys)¶
¶
## Call the API¶
¶
<Tabs>¶
<Tab title="cURL">¶
<Steps>¶
<Step title="Set your API key">¶
Get your API key at the [Claude Console](/settings/keys) and set it as an environment variable:¶
¶
```bash¶
export ANTHROPIC_API_KEY='your-api-key-here'¶
```¶
</Step>¶
¶
<Step title="Make your first API call">¶
Run this command to create a simple web search assistant:¶
¶
```bash¶
curl https://api.anthropic.com/v1/messages \¶
-H "Content-Type: application/json" \¶
-H "x-api-key: $ANTHROPIC_API_KEY" \¶
-H "anthropic-version: 2023-06-01" \¶
-d '{¶
"model": "claude-sonnet-4-5",¶
"max_tokens": 1000,¶
"messages": [¶
{¶
"role": "user", ¶
"content": "What should I search for to find the latest developments in renewable energy?"¶
}¶
]¶
}'¶
```¶
¶
**Example output:**¶
```json¶
{¶
"id": "msg_01HCDu5LRGeP2o7s2xGmxyx8",¶
"type": "message", ¶
"role": "assistant",¶
"content": [¶
{¶
"type": "text",¶
"text": "Here are some effective search strategies to find the latest renewable energy developments:\n\n## Search Terms to Use:\n- \"renewable energy news 2024\"\n- \"clean energy breakthrough\"\n- \"solar/wind/battery technology advances\"\n- \"green energy innovations\"\n- \"climate tech developments\"\n- \"energy storage solutions\"\n\n## Best Sources to Check:\n\n**News & Industry Sites:**\n- Renewable Energy World\n- GreenTech Media (now Wood Mackenzie)\n- Energy Storage News\n- CleanTechnica\n- PV Magazine (for solar)\n- WindPower Engineering & Development..."¶
}¶
],¶
"model": "claude-sonnet-4-5",¶
"stop_reason": "end_turn",¶
"usage": {¶
"input_tokens": 21,¶
"output_tokens": 305¶
}¶
}¶
```¶
</Step>¶
</Steps>¶
</Tab>¶
¶
<Tab title="Python">¶
<Steps>¶
<Step title="Set your API key">¶
Get your API key from the [Claude Console](/settings/keys) and set it as an environment variable:¶
¶
```bash¶
export ANTHROPIC_API_KEY='your-api-key-here'¶
```¶
</Step>¶
¶
<Step title="Install the SDK">¶
Install the Anthropic Python SDK:¶
¶
```bash¶
pip install anthropic¶
```¶
</Step>¶
¶
<Step title="Create your code">¶
Save this as `quickstart.py`:¶
¶
```python¶
import anthropic¶
¶
client = anthropic.Anthropic()¶
¶
message = client.messages.create(¶
model="claude-sonnet-4-5",¶
max_tokens=1000,¶
messages=[¶
{¶
"role": "user",¶
"content": "What should I search for to find the latest developments in renewable energy?"¶
}¶
]¶
)¶
print(message.content)¶
```¶
</Step>¶
¶
<Step title="Run your code">¶
```bash¶
python quickstart.py¶
```¶
¶
**Example output:**¶
```python¶
[TextBlock(text='Here are some effective search strategies for finding the latest renewable energy developments:\n\n**Search Terms to Use:**\n- "renewable energy news 2024"\n- "clean energy breakthroughs"\n- "solar/wind/battery technology advances"\n- "energy storage innovations"\n- "green hydrogen developments"\n- "renewable energy policy updates"\n\n**Reliable Sources to Check:**\n- **News & Analysis:** Reuters Energy, Bloomberg New Energy Finance, Greentech Media, Energy Storage News\n- **Industry Publications:** Renewable Energy World, PV Magazine, Wind Power Engineering\n- **Research Organizations:** International Energy Agency (IEA), National Renewable Energy Laboratory (NREL)\n- **Government Sources:** Department of Energy websites, EPA clean energy updates\n\n**Specific Topics to Explore:**\n- Perovskite and next-gen solar cells\n- Offshore wind expansion\n- Grid-scale battery storage\n- Green hydrogen production\n- Carbon capture technologies\n- Smart grid innovations\n- Energy policy changes and incentives...', type='text')]¶
```¶
</Step>¶
</Steps>¶
</Tab>¶
¶
<Tab title="TypeScript">¶
<Steps>¶
<Step title="Set your API key">¶
Get your API key from the [Claude Console](/settings/keys) and set it as an environment variable:¶
¶
```bash¶
export ANTHROPIC_API_KEY='your-api-key-here'¶
```¶
</Step>¶
¶
<Step title="Install the SDK">¶
Install the Anthropic TypeScript SDK:¶
¶
```bash¶
npm install @anthropic-ai/sdk¶
```¶
</Step>¶
¶
<Step title="Create your code">¶
Save this as `quickstart.ts`:¶
¶
```typescript¶
import Anthropic from "@anthropic-ai/sdk";¶
¶
async function main() {¶
const anthropic = new Anthropic();¶
¶
const msg = await anthropic.messages.create({¶
model: "claude-sonnet-4-5",¶
max_tokens: 1000,¶
messages: [¶
{¶
role: "user",¶
content: "What should I search for to find the latest developments in renewable energy?"¶
}¶
]¶
});¶
console.log(msg);¶
}¶
¶
main().catch(console.error);¶
```¶
</Step>¶
¶
<Step title="Run your code">¶
```bash¶
npx tsx quickstart.ts¶
```¶
¶
**Example output:**¶
```javascript¶
{¶
id: 'msg_01ThFHzad6Bh4TpQ6cHux9t8',¶
type: 'message',¶
role: 'assistant',¶
model: 'claude-sonnet-4-5-20250929',¶
content: [¶
{¶
type: 'text',¶
text: 'Here are some effective search strategies to find the latest renewable energy developments:\n\n' +¶
'## Search Terms to Use:\n' +¶
'- "renewable energy news 2024"\n' +¶
'- "clean energy breakthroughs"\n' +¶
'- "solar wind technology advances"\n' +¶
'- "energy storage innovations"\n' +¶
'- "green hydrogen developments"\n' +¶
'- "offshore wind projects"\n' +¶
'- "battery technology renewable"\n\n' +¶
'## Best Sources to Check:\n\n' +¶
'**News & Industry Sites:**\n' +¶
'- Renewable Energy World\n' +¶
'- CleanTechnica\n' +¶
'- GreenTech Media (now Wood Mackenzie)\n' +¶
'- Energy Storage News\n' +¶
'- PV Magazine (for solar)...'¶
}¶
],¶
stop_reason: 'end_turn',¶
usage: {¶
input_tokens: 21,¶
output_tokens: 302¶
}¶
}¶
```¶
</Step>¶
</Steps>¶
</Tab>¶
¶
<Tab title="Java">¶
<Steps>¶
<Step title="Set your API key">¶
Get your API key from the [Claude Console](/settings/keys) and set it as an environment variable:¶
¶
```bash¶
export ANTHROPIC_API_KEY='your-api-key-here'¶
```¶
</Step>¶
¶
<Step title="Install the SDK">¶
Add the Anthropic Java SDK to your project. First find the current version on [Maven Central](https://central.sonatype.com/artifact/com.anthropic/anthropic-java).¶
¶
**Gradle:**¶
```groovy¶
implementation("com.anthropic:anthropic-java:1.0.0")¶
```¶
¶
**Maven:**¶
```xml¶
<dependency>¶
<groupId>com.anthropic</groupId>¶
<artifactId>anthropic-java</artifactId>¶
<version>1.0.0</version>¶
</dependency>¶
```¶
</Step>¶
¶
<Step title="Create your code">¶
Save this as `QuickStart.java`:¶
¶
```java¶
import com.anthropic.client.AnthropicClient;¶
import com.anthropic.client.okhttp.AnthropicOkHttpClient;¶
import com.anthropic.models.messages.Message;¶
import com.anthropic.models.messages.MessageCreateParams;¶
¶
public class QuickStart {¶
public static void main(String[] args) {¶
AnthropicClient client = AnthropicOkHttpClient.fromEnv();¶
¶
MessageCreateParams params = MessageCreateParams.builder()¶
.model("claude-sonnet-4-5-20250929")¶
.maxTokens(1000)¶
.addUserMessage("What should I search for to find the latest developments in renewable energy?")¶
.build();¶
¶
Message message = client.messages().create(params);¶
System.out.println(message.content());¶
}¶
}¶
```¶
</Step>¶
¶
<Step title="Run your code">¶
```bash¶
javac QuickStart.java¶
java QuickStart¶
```¶
¶
**Example output:**¶
```java¶
[ContentBlock{text=TextBlock{text=Here are some effective search strategies to find the latest renewable energy developments:¶
¶
## Search Terms to Use:¶
- "renewable energy news 2024"¶
- "clean energy breakthroughs" ¶
- "solar/wind/battery technology advances"¶
- "energy storage innovations"¶
- "green hydrogen developments"¶
- "renewable energy policy updates"¶
¶
## Best Sources to Check:¶
- **News & Analysis:** Reuters Energy, Bloomberg New Energy Finance, Greentech Media¶
- **Industry Publications:** Renewable Energy World, PV Magazine, Wind Power Engineering¶
- **Research Organizations:** International Energy Agency (IEA), National Renewable Energy Laboratory (NREL)¶
- **Government Sources:** Department of Energy websites, EPA clean energy updates¶
¶
## Specific Topics to Explore:¶
- Perovskite and next-gen solar cells¶
- Offshore wind expansion¶
- Grid-scale battery storage¶
- Green hydrogen production..., type=text}}]¶
```¶
</Step>¶
</Steps>¶
</Tab>¶
</Tabs>¶
¶
## Next steps¶
¶
Now that you have made your first Claude API request, it's time to explore what else is possible:¶
¶
<CardGroup cols={3}>¶
<Card title="Working with Messages" icon="messages" href="/docs/en/build-with-claude/working-with-messages">¶
Learn common patterns for the Messages API.¶
</Card>¶
<Card title="Features Overview" icon="brain" href="/docs/en/api/overview">¶
Explore Claude's advanced features and capabilities.¶
</Card>¶
<Card title="Client SDKs" icon="code-brackets" href="/docs/en/api/client-sdks">¶
Discover Anthropic client libraries.¶
</Card>¶
<Card title="Claude Cookbook" icon="chef-hat" href="https://github.com/anthropics/anthropic-platform.claude.com/cookbooks">¶
Learn with interactive Jupyter notebooks.¶
</Card>¶
</CardGroup>