---
title: 通过 API 维护知识库
version: '简体中文'
---

> 鉴权、调用方式与应用 Service API 保持一致，不同之处在于，所生成的单个知识库 API token 具备操作当前账号下所有可见知识库的权限，请注意数据安全。

### 使用知识库 API 的优势

通过 API 维护知识库可大幅提升数据处理效率，你可以通过命令行轻松同步数据，实现自动化操作，而无需在用户界面进行繁琐操作。

主要优势包括:

* 自动同步: 将数据系统与 Dify 知识库无缝对接，构建高效工作流程；
* 全面管理: 提供知识库列表，文档列表及详情查询等功能，方便你自建数据管理界面；
* 灵活上传: 支持纯文本和文件上传方式,可针对分段（Chunks）内容的批量新增和修改操作；
* 提高效率: 减少手动处理时间，提升 Dify 平台使用体验。

### 如何使用

进入知识库页面，在左侧的导航中切换至 **API** 页面。在该页面中你可以查看 Dify 提供的知识库 API 文档，并可以在 **API 密钥** 中管理可访问知识库 API 的凭据。

![](https://assets-docs.dify.ai/2025/03/82ef51dc6886fb8301a2b85a920b12d0.png)

### API 调用示例

#### 通过文本创建文档

输入示例：

```json
curl --location --request POST 'https://api.dify.ai/v1/datasets/{dataset_id}/document/create_by_text' \
--header 'Authorization: Bearer {api_key}' \
--header 'Content-Type: application/json' \
--data-raw '{"name": "text","text": "text","indexing_technique": "high_quality","process_rule": {"mode": "automatic"}}'
```

输出示例：

```json
{
  "document": {
    "id": "",
    "position": 1,
    "data_source_type": "upload_file",
    "data_source_info": {
        "upload_file_id": ""
    },
    "dataset_process_rule_id": "",
    "name": "text.txt",
    "created_from": "api",
    "created_by": "",
    "created_at": 1695690280,
    "tokens": 0,
    "indexing_status": "waiting",
    "error": null,
    "enabled": true,
    "disabled_at": null,
    "disabled_by": null,
    "archived": false,
    "display_status": "queuing",
    "word_count": 0,
    "hit_count": 0,
    "doc_form": "text_model"
  },
  "batch": ""
}
```

#### 通过文件创建文档

输入示例：

```json
curl --location --request POST 'https://api.dify.ai/v1/datasets/{dataset_id}/document/create_by_file' \
--header 'Authorization: Bearer {api_key}' \
--form 'data="{"indexing_technique":"high_quality","process_rule":{"rules":{"pre_processing_rules":[{"id":"remove_extra_spaces","enabled":true},{"id":"remove_urls_emails","enabled":true}],"segmentation":{"separator":"###","max_tokens":500}},"mode":"custom"}}";type=text/plain' \
--form 'file=@"/path/to/file"'
```

输出示例：

```json
{
  "document": {
    "id": "",
    "position": 1,
    "data_source_type": "upload_file",
    "data_source_info": {
      "upload_file_id": ""
    },
    "dataset_process_rule_id": "",
    "name": "Dify.txt",
    "created_from": "api",
    "created_by": "",
    "created_at": 1695308667,
    "tokens": 0,
    "indexing_status": "waiting",
    "error": null,
    "enabled": true,
    "disabled_at": null,
    "disabled_by": null,
    "archived": false,
    "display_status": "queuing",
    "word_count": 0,
    "hit_count": 0,
    "doc_form": "text_model"
  },
  "batch": ""
}

```

#### **创建空知识库**

<Info>
  仅用来创建空知识库
</Info>

输入示例：

```bash
curl --location --request POST 'https://api.dify.ai/v1/datasets' \
--header 'Authorization: Bearer {api_key}' \
--header 'Content-Type: application/json' \
--data-raw '{"name": "name", "permission": "only_me"}'
```

输出示例：

```json
{
  "id": "",
  "name": "name",
  "description": null,
  "provider": "vendor",
  "permission": "only_me",
  "data_source_type": null,
  "indexing_technique": null,
  "app_count": 0,
  "document_count": 0,
  "word_count": 0,
  "created_by": "",
  "created_at": 1695636173,
  "updated_by": "",
  "updated_at": 1695636173,
  "embedding_model": null,
  "embedding_model_provider": null,
  "embedding_available": null
}
```

#### **知识库列表**

输入示例：

```bash
curl --location --request GET 'https://api.dify.ai/v1/datasets?page=1&limit=20' \
--header 'Authorization: Bearer {api_key}'
```

输出示例：

```json
{
  "data": [
    {
      "id": "",
      "name": "知识库名称",
      "description": "描述信息",
      "permission": "only_me",
      "data_source_type": "upload_file",
      "indexing_technique": "",
      "app_count": 2,
      "document_count": 10,
      "word_count": 1200,
      "created_by": "",
      "created_at": "",
      "updated_by": "",
      "updated_at": ""
    },
    ...
  ],
  "has_more": true,
  "limit": 20,
  "total": 50,
  "page": 1
}
```

#### 删除知识库

输入示例：

```json
curl --location --request DELETE 'https://api.dify.ai/v1/datasets/{dataset_id}' \
--header 'Authorization: Bearer {api_key}'
```

输出示例：

```json
204 No Content
```

#### 通过文本更新文档

此接口基于已存在知识库，在此知识库的基础上通过文本更新文档

输入示例：

```bash
curl --location --request POST 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/{document_id}/update_by_text' \
--header 'Authorization: Bearer {api_key}' \
--header 'Content-Type: application/json' \
--data-raw '{"name": "name","text": "text"}'
```

输出示例：

```json
{
  "document": {
    "id": "",
    "position": 1,
    "data_source_type": "upload_file",
    "data_source_info": {
      "upload_file_id": ""
    },
    "dataset_process_rule_id": "",
    "name": "name.txt",
    "created_from": "api",
    "created_by": "",
    "created_at": 1695308667,
    "tokens": 0,
    "indexing_status": "waiting",
    "error": null,
    "enabled": true,
    "disabled_at": null,
    "disabled_by": null,
    "archived": false,
    "display_status": "queuing",
    "word_count": 0,
    "hit_count": 0,
    "doc_form": "text_model"
  },
  "batch": ""
}
```

#### 通过文件更新文档

此接口基于已存在知识库，在此知识库的基础上通过文件更新文档的操作。

输入示例：

```bash
curl --location --request POST 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/{document_id}/update_by_file' \
--header 'Authorization: Bearer {api_key}' \
--form 'data="{"name":"Dify","indexing_technique":"high_quality","process_rule":{"rules":{"pre_processing_rules":[{"id":"remove_extra_spaces","enabled":true},{"id":"remove_urls_emails","enabled":true}],"segmentation":{"separator":"###","max_tokens":500}},"mode":"custom"}}";type=text/plain' \
--form 'file=@"/path/to/file"'
```

输出示例：

```json
{
  "document": {
    "id": "",
    "position": 1,
    "data_source_type": "upload_file",
    "data_source_info": {
      "upload_file_id": ""
    },
    "dataset_process_rule_id": "",
    "name": "Dify.txt",
    "created_from": "api",
    "created_by": "",
    "created_at": 1695308667,
    "tokens": 0,
    "indexing_status": "waiting",
    "error": null,
    "enabled": true,
    "disabled_at": null,
    "disabled_by": null,
    "archived": false,
    "display_status": "queuing",
    "word_count": 0,
    "hit_count": 0,
    "doc_form": "text_model"
  },
  "batch": "20230921150427533684"
}
```


#### **获取文档嵌入状态（进度）**

输入示例：

```bash
curl --location --request GET 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/{batch}/indexing-status' \
--header 'Authorization: Bearer {api_key}'
```

输出示例：

```json
{
  "data":[{
    "id": "",
    "indexing_status": "indexing",
    "processing_started_at": 1681623462.0,
    "parsing_completed_at": 1681623462.0,
    "cleaning_completed_at": 1681623462.0,
    "splitting_completed_at": 1681623462.0,
    "completed_at": null,
    "paused_at": null,
    "error": null,
    "stopped_at": null,
    "completed_segments": 24,
    "total_segments": 100
  }]
}
```

#### **删除文档**

输入示例：

```bash
curl --location --request DELETE 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/{document_id}' \
--header 'Authorization: Bearer {api_key}'
```

输出示例：

```bash
{
  "result": "success"
}
```

#### **知识库文档列表**

输入示例：

```bash
curl --location --request GET 'https://api.dify.ai/v1/datasets/{dataset_id}/documents' \
--header 'Authorization: Bearer {api_key}'
```

输出示例：

```json
{
  "data": [
    {
      "id": "",
      "position": 1,
      "data_source_type": "file_upload",
      "data_source_info": null,
      "dataset_process_rule_id": null,
      "name": "dify",
      "created_from": "",
      "created_by": "",
      "created_at": 1681623639,
      "tokens": 0,
      "indexing_status": "waiting",
      "error": null,
      "enabled": true,
      "disabled_at": null,
      "disabled_by": null,
      "archived": false
    },
  ],
  "has_more": false,
  "limit": 20,
  "total": 9,
  "page": 1
}
```

#### **新增分段**

输入示例：

```bash
curl --location --request POST 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/{document_id}/segments' \
--header 'Authorization: Bearer {api_key}' \
--header 'Content-Type: application/json' \
--data-raw '{"segments": [{"content": "1","answer": "1","keywords": ["a"]}]}'
```

输出示例：

```json
{
  "data": [{
    "id": "",
    "position": 1,
    "document_id": "",
    "content": "1",
    "answer": "1",
    "word_count": 25,
    "tokens": 0,
    "keywords": [
        "a"
    ],
    "index_node_id": "",
    "index_node_hash": "",
    "hit_count": 0,
    "enabled": true,
    "disabled_at": null,
    "disabled_by": null,
    "status": "completed",
    "created_by": "",
    "created_at": 1695312007,
    "indexing_at": 1695312007,
    "completed_at": 1695312007,
    "error": null,
    "stopped_at": null
  }],
  "doc_form": "text_model"
}

```

### 查询文档分段

输入示例：

```bash
curl --location --request GET 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/{document_id}/segments' \
--header 'Authorization: Bearer {api_key}' \
--header 'Content-Type: application/json'
```

输出示例：

```bash
{
  "data": [{
    "id": "",
    "position": 1,
    "document_id": "",
    "content": "1",
    "answer": "1",
    "word_count": 25,
    "tokens": 0,
    "keywords": [
        "a"
    ],
    "index_node_id": "",
    "index_node_hash": "",
    "hit_count": 0,
    "enabled": true,
    "disabled_at": null,
    "disabled_by": null,
    "status": "completed",
    "created_by": "",
    "created_at": 1695312007,
    "indexing_at": 1695312007,
    "completed_at": 1695312007,
    "error": null,
    "stopped_at": null
  }],
  "doc_form": "text_model"
}
```

### 删除文档分段

输入示例：

```bash
curl --location --request DELETE 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}' \
--header 'Authorization: Bearer {api_key}' \
--header 'Content-Type: application/json'
```

输出示例：

```bash
{
  "result": "success"
}
```

### 更新文档分段

输入示例：

```bash
curl --location --request POST 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}' \
--header 'Authorization: Bearer {api_key}' \
--header 'Content-Type: application/json'\
--data-raw '{"segment": {"content": "1","answer": "1", "keywords": ["a"], "enabled": false}}'
```

输出示例：

```bash
{
  "data": [{
    "id": "",
    "position": 1,
    "document_id": "",
    "content": "1",
    "answer": "1",
    "word_count": 25,
    "tokens": 0,
    "keywords": [
        "a"
    ],
    "index_node_id": "",
    "index_node_hash": "",
    "hit_count": 0,
    "enabled": true,
    "disabled_at": null,
    "disabled_by": null,
    "status": "completed",
    "created_by": "",
    "created_at": 1695312007,
    "indexing_at": 1695312007,
    "completed_at": 1695312007,
    "error": null,
    "stopped_at": null
  }],
  "doc_form": "text_model"
}
```

#### 新增知识库元数据字段

输入示例：

```bash
curl --location 'https://api.dify.ai/v1/datasets/{dataset_id}/metadata' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer {api_key}' \
--data '{
    "type":"string",
    "name":"test"
}'
```

输出示例：

```json
{
    "id": "9f63c91b-d60e-4142-bb0c-c81a54dc2db5",
    "type": "string",
    "name": "test"
}
```

#### 更新知识库元数据字段

输入示例：

```bash
curl --location --request PATCH 'https://api.dify.ai/v1/datasets/{dataset_id}/metadata/{metadata_id}' \
--header 'Authorization: Bearer {api_key}' \
--header 'Content-Type: application/json'\
--data-raw '{"name": "test"}'
```

输出示例：

```json
{
  "id": "abc",
  "type": "string",
  "name": "test",
}
```

#### 删除知识库元数据字段

输入示例：

```bash
curl --location --request DELETE 'https://api.dify.ai/v1/datasets/{dataset_id}/metadata/{metadata_id}' \
--header 'Authorization: Bearer {api_key}'
```

输出示例：

```bash
200 success
```

#### 启用/禁用知识库元数据中的内置字段

输入示例：

```bash
curl --location --request DELETE 'https://api.dify.ai/v1/datasets/{dataset_id}/metadata/built-in/{action}' \
--header 'Authorization: Bearer {api_key}'
```

输出示例：

```json
200 success
```

#### 修改文档的元数据（赋值）

输入示例：

```bash
curl --location 'https://api.dify.ai/v1/datasets/{dataset_id}/documents/metadata' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer {api_key}'
--data '{
    "operation_data":[
        {
            "document_id": "3e928bc4-65ea-4201-87c8-cbcc5871f525",
            "metadata_list": [
                    {
                    "id": "1887f5ec-966f-4c93-8c99-5ad386022f46",
                    "value": "dify",
                    "name": "test"
                }
            ]
        }
    ]
}'
```

输出示例：

```json
200 success
```

#### 数据集的元数据列表

输入示例：

```bash
curl --location 'https://api.dify.ai/v1/datasets/{dataset_id}/metadata' \
--header 'Authorization: Bearer {api_key}'
```

输出示例：

```json
{
  "doc_metadata": [
    {
      "id": "550e8400-e29b-41d4-a716-446655440000",
      "type": "string",
      "name": "title",
      "use_count": 42
    },
    {
      "id": "6ba7b810-9dad-11d1-80b4-00c04fd430c8",
      "type": "number",
      "name": "price",
      "use_count": 28
    },
    {
      "id": "7ba7b810-9dad-11d1-80b4-00c04fd430c9",
      "type": "time",
      "name": "created_at",
      "use_count": 35
    }
  ],
  "built_in_field_enabled": true
}
```

### 错误信息

| 错误信息 | 错误码 | 原因描述 |
|------|--------|---------|
| no_file_uploaded | 400 | 请上传你的文件  |
| too_many_files | 400 | 只允许上传一个文件  |
| file_too_large | 413 | 文件大小超出限制  |
| unsupported_file_type | 415 | 不支持的文件类型。目前只支持以下内容格式：`txt`, `markdown`, `md`, `pdf`, `html`, `html`, `xlsx`, `docx`, `csv` |
| high_quality_dataset_only | 400 | 当前操作仅支持"高质量"知识库  |
| dataset_not_initialized | 400 | 知识库仍在初始化或索引中。请稍候  |
| archived_document_immutable | 403 | 归档文档不可编辑  |
| dataset_name_duplicate | 409 | 知识库名称已存在，请修改你的知识库名称  |
| invalid_action | 400 | 无效操作  |
| document_already_finished | 400 | 文档已处理完成。请刷新页面或查看文档详情  |
| document_indexing | 400 | 文档正在处理中，无法编辑  |
| invalid_metadata | 400 | 元数据内容不正确。请检查并验证  |

{/*
Contributing Section
DO NOT edit this section!
It will be automatically generated by the script.
*/}

---

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