---
title: Knowledge Base
description: Add documents to your agents' knowledge base for RAG-powered responses on elizaOS Cloud.
---

# Knowledge Base

Enhance your agents with document-based knowledge using Retrieval-Augmented Generation (RAG).

## Overview

The Knowledge Base allows you to:

- Upload documents (PDF, TXT, MD, etc.)
- Automatically chunk and index content
- Query for relevant context
- Connect to agents for enhanced responses

## Quick Start

### App

Manage your knowledge base from the **Knowledge** surface in the elizaOS app (per-agent document list, upload, and import). The standalone cloud dashboard page has been retired; the API below and the in-app surface are the supported paths.

### API

<Tabs>
  <Tab title="cURL">

```bash
# Upload a document
curl -X POST "https://elizacloud.ai/api/v1/documents/upload-file" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "files=@document.pdf" \
  -F "characterId=agent_abc123"
```
  </Tab>
  <Tab title="JavaScript">

```javascript
const formData = new FormData();
formData.append('files', file);
formData.append('characterId', 'agent_abc123');

const response = await fetch('https://elizacloud.ai/api/v1/documents/upload-file', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
},
body: formData,
});

const result = await response.json();
console.log('Document uploaded:', result.id);

```
  </Tab>
  <Tab title="Python">

```python
import requests

with open('document.pdf', 'rb') as f:
    response = requests.post(
        'https://elizacloud.ai/api/v1/documents/upload-file',
        headers={'Authorization': 'Bearer YOUR_API_KEY'},
        files={'files': f},
        data={'characterId': 'agent_abc123'},
    )

result = response.json()
print(f'Document uploaded: {result["id"]}')
```
  </Tab>
</Tabs>

## Supported Formats

| Format   | Extension | Max Size |
| -------- | --------- | -------- |
| PDF      | `.pdf`    | 5MB      |
| Text     | `.txt`    | 5MB      |
| Markdown | `.md`     | 5MB      |
| Word     | `.docx`   | 5MB      |
| JSON     | `.json`   | 5MB      |
| XML      | `.xml`    | 5MB      |
| YAML     | `.yaml`   | 5MB      |
| CSV      | `.csv`    | 5MB      |

**Note:** Maximum 5MB per file and 5MB total per batch upload.

## Upload Documents

<Steps>
<Step title="Prepare Your Documents">

Ensure documents are in a supported format and within size limits.

</Step>

<Step title="Upload via Dashboard or API">

Use the Knowledge dashboard or the upload API endpoint.

</Step>

<Step title="Wait for Processing">

Documents are stored as runtime documents and chunked for search.

</Step>

<Step title="Connect to Agent">

Link the knowledge base to your agent for RAG.

</Step>
</Steps>

### Upload Response

```json
{
  "id": "doc_abc123",
  "filename": "product-manual.pdf",
  "status": "processing",
  "chunks": null,
  "createdAt": "2024-01-15T10:30:00Z"
}
```

### Check Processing Status

```bash
curl -X GET "https://elizacloud.ai/api/v1/documents/check?documentId=doc_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"
```

```json
{
  "id": "doc_abc123",
  "status": "completed",
  "chunks": 42,
  "tokensUsed": 15234
}
```

## Query Knowledge

Search your knowledge base:

```bash
curl -X POST "https://elizacloud.ai/api/v1/documents/query" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "query": "How do I reset my password?",
    "agentId": "agent_abc123",
    "limit": 5
  }'
```

### Response

```json
{
  "results": [
    {
      "content": "To reset your password, navigate to Settings > Security > Reset Password...",
      "score": 0.92,
      "documentId": "doc_abc123",
      "metadata": {
        "page": 15,
        "section": "Account Settings"
      }
    },
    {
      "content": "Password requirements include at least 8 characters...",
      "score": 0.85,
      "documentId": "doc_abc123",
      "metadata": {
        "page": 16,
        "section": "Security"
      }
    }
  ]
}
```

## Managing Documents

### List Documents

```bash
curl -X GET "https://elizacloud.ai/api/v1/documents?agentId=agent_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"
```

### Get Document Details

```bash
curl -X GET "https://elizacloud.ai/api/v1/documents/doc_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"
```

### Delete Document

```bash
curl -X DELETE "https://elizacloud.ai/api/v1/documents/doc_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"
```

## RAG Configuration

### Chunk Settings

Configure how documents are split:

| Setting        | Default | Description            |
| -------------- | ------- | ---------------------- |
| `chunkSize`    | 1000    | Characters per chunk   |
| `chunkOverlap` | 200     | Overlap between chunks |
| `minChunkSize` | 100     | Minimum chunk size     |

### Retrieval Settings

Configure query behavior:

| Setting    | Default | Description                   |
| ---------- | ------- | ----------------------------- |
| `limit`    | 5       | Number of results             |
| `minScore` | 0.7     | Minimum relevance score       |
| `rerank`   | true    | Re-rank results for relevance |

## Agent Integration

### Automatic RAG

When knowledge is connected to an agent, relevant context is automatically retrieved:

```javascript
// Agent with knowledge base
const response = await fetch("https://elizacloud.ai/api/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "agent_abc123", // Agent with connected knowledge
    messages: [{ role: "user", content: "How do I reset my password?" }],
  }),
});
```

The agent automatically queries the knowledge base and includes relevant context in its response.

### Manual RAG

Query knowledge and inject context manually:

```javascript
// 1. Query knowledge
const knowledge = await fetch("https://elizacloud.ai/api/v1/documents/query", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    query: "password reset",
    limit: 3,
  }),
}).then((r) => r.json());

// 2. Include in chat
const context = knowledge.results.map((r) => r.content).join("\n\n");

const response = await fetch("https://elizacloud.ai/api/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "gpt-oss-120b",
    messages: [
      { role: "system", content: `Use this context:\n\n${context}` },
      { role: "user", content: "How do I reset my password?" },
    ],
  }),
});
```

## Pricing

See [Billing & Credits](/cloud/billing) for current pricing on document uploads, embeddings, queries, and storage.

## Best Practices

- **Quality Content** — Use well-structured, accurate documents
- **Organize** — Group related documents for better retrieval
- **Update Regularly** — Keep knowledge current by refreshing documents
- **Test Queries** — Verify retrieval quality before production

## Next Steps

<CardGroup>
  <CardGroup.Card title="AI Agents" href="/cloud/agents">
    Create agents that use knowledge
  </CardGroup.Card>
  <CardGroup.Card title="Chat API" href="/cloud/api">
    Integrate RAG into your applications
  </CardGroup.Card>
  <CardGroup.Card title="Embeddings" href="/cloud/api">
    Learn about vector embeddings
  </CardGroup.Card>
</CardGroup>