Files
ttstd-infinite-canvas/plugin-packages/volcengine-ark-seedance/docs/interface.md
VicoHu 1e228a04dc feat(plugins): 方舟 Agent Plan - 新增图片与视频协议插件
独立 /api/plan/v3 Seedream、Seedance 插件,并同步宿主能力默认值与渠道识别,避免与官方 /api/v3 凭证混用。

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-17 17:55:12 +08:00

528 lines
17 KiB
Markdown
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
# Volcengine Ark Seedance 接口字段
## 协议身份
- 插件 ID:`volcengine-ark-seedance`。
- Provider ID:`volcengine-ark-video`。
- 能力:`video`。
- 默认 Base URL:`https://ark.cn-beijing.volces.com`。
- 鉴权驱动:`bearer`。
- 创建:`POST /api/v3/contents/generations/tasks`。
- 查询:`GET /api/v3/contents/generations/tasks/{{taskId}}`。
- 取消:`DELETE /api/v3/contents/generations/tasks/{{taskId}}`。
## 配置字段
| 字段 | 类型 | 必填 | 含义 |
| --- | --- | --- | --- |
| `apiKey` | secret | 是 | API Key |
## 统一字段映射
| 统一字段 | 类型 | 必填 | 上游映射 | 说明 |
| --- | --- | --- | --- | --- |
| `model` | string | 是 | `model` | Ark endpoint/model ID。 |
| `prompt` | string | 是 | `content[type=text].text` | 视频提示词。 |
| `images` | media[] | 否 | `content[type=image_url]` | first_frame、last_frame、reference_image 等 role 原样映射。 |
| `videos` | media[] | 否 | `content[type=video_url]` | reference_video。 |
| `audios` | media[] | 否 | `content[type=audio_url]` | reference_audio/reference_voice。 |
| `aspectRatio` | string | 否 | `ratio` | 输出画幅。 |
| `resolution` | string | 否 | `resolution` | 输出分辨率档位。 |
| `duration` | integer | 否 | `duration` | 输出时长秒数。 |
| `generateAudio` | boolean | 否 | `generate_audio` | 是否生成音频。 |
| `watermark` | boolean | 否 | `watermark` | 是否带水印。 |
| `seed` | integer | 否 | `seed` | providerOptions seed。 |
| `camera_fixed` | boolean | 否 | `camera_fixed` | providerOptions camera_fixed。 |
## 上游请求模板逐字段清单
下表由插件请求模板生成,覆盖 body、query、headers 和 multipart 文件声明中的每个字段。
| 上游位置 | 值或转换表达式 |
| --- | --- |
| `create.method` | `"POST"` |
| `create.path` | `"/api/v3/contents/generations/tasks"` |
| `create.contentType` | `"application/json"` |
| `create.body.model` | `{"$ref":"request.model"}` |
| `create.body.content` | `{"$concatArrays":[[{"type":"text","text":{"$ref":"request.prompt"}}],{"$map":{"from":{"$sortByOrder":{"$ref":"request.images"}},"as":"media","in":{"type":"image_url","image_url":{"url":{"$ref":"media.value"}},"role":{"$coalesce":[{"$ref":"media.role"},"reference_image"]}}}},{"$map":{"from":{"$sortByOrder":{"$ref":"request.videos"}},"as":"media","in":{"type":"video_url","video_url":{"url":{"$ref":"media.value"}},"role":{"$coalesce":[{"$ref":"media.role"},"reference_video"]}}}},{"$map":{"from":{"$sortByOrder":{"$ref":"request.audios"}},"as":"media","in":{"type":"audio_url","audio_url":{"url":{"$ref":"media.value"}},"role":{"$coalesce":[{"$ref":"media.role"},"reference_audio"]}}}}]}` |
| `create.body.ratio` | `{"$coalesce":[{"$ref":"request.aspectRatio"},"16:9"]}` |
| `create.body.resolution` | `{"$coalesce":[{"$ref":"request.resolution"},"720p"]}` |
| `create.body.duration` | `{"$if":{"condition":{"$gt":[{"$ref":"request.duration"},0]},"then":{"$ref":"request.duration"},"else":5}}` |
| `create.body.generate_audio` | `{"$ref":"request.generateAudio"}` |
| `create.body.watermark` | `{"$ref":"request.watermark"}` |
| `create.body.seed` | `{"$omitEmpty":{"$ref":"request.providerOptions.volcengine-ark-video.seed"}}` |
| `create.body.camera_fixed` | `{"$omitEmpty":{"$ref":"request.providerOptions.volcengine-ark-video.camera_fixed"}}` |
| `poll.method` | `"GET"` |
| `poll.path` | `"/api/v3/contents/generations/tasks/{{taskId}}"` |
| `poll.contentType` | `"application/json"` |
| `cancel.method` | `"DELETE"` |
| `cancel.path` | `"/api/v3/contents/generations/tasks/{{taskId}}"` |
| `cancel.contentType` | `"application/json"` |
## Provider 扩展键
- `providerOptions.volcengine-ark-video.camera_fixed`
- `providerOptions.volcengine-ark-video.seed`
动态模型或工作流允许使用文档声明的完整 `parameters/input/extra_body` 对象;该对象是协议本身的开放 schema,不会被宿主裁剪。
## 响应映射逐字段清单
| 映射位置 | 上游路径或转换表达式 |
| --- | --- |
| `response.taskId` | `{"$coalesce":[{"$ref":"response.id"},{"$ref":"response.task_id"},{"$ref":"response.data.id"},{"$ref":"taskId"}]}` |
| `response.status` | `{"$coalesce":[{"$ref":"response.status"},{"$ref":"response.data.status"},"pending"]}` |
| `response.message` | `{"$coalesce":[{"$ref":"response.error.message"},{"$ref":"response.message"},{"$ref":"response.fail_reason"}]}` |
| `response.videos` | `{"$coalesce":[{"$ref":"response.content.video_url"},{"$ref":"response.video_url"},{"$ref":"response.output.video_url"},{"$ref":"response.data.video_url"}]}` |
| `response.usage` | `{"$ref":"response.usage"}` |
| `response.errorPaths[0]` | `"error.code"` |
| `response.resultEphemeral` | `true` |
## 响应与错误
插件把上游 task/status/text/media/usage 映射为统一结果。临时媒体 URL 标记为 ephemeral,由宿主立即下载持久化。HTTP 错误、业务 code 和 error object 保持失败语义,不包装成成功。
## 兼容边界
官方 Ark 推理接入:创建/查询/取消走 /api/v3/contents/generations/tasks;插件不根据图片下标推断首尾帧,role 由业务层确定。API Key 来自方舟推理接入控制台。
<!-- YINGCE_MANIFEST_CONTRACT_START -->
## Manifest 完整接口定义
以下 JSON 与插件包内实际 `manifest.json` 逐字段一致,覆盖插件身份、权限、配置、鉴权、参数、校验、创建、Agent、查询、取消、结果下载、响应和 Agent 响应映射。`documentation` 字段的值就是当前完整文档;为避免文档在自身内部无限递归,JSON 中仅用等义占位文本表示正文。
```json
{
"apiVersion": "yingce.plugin/v2",
"id": "volcengine-ark-seedance",
"name": "Volcengine Ark Seedance",
"version": "2.0.0",
"author": "Volcengine / 影策",
"description": "Volcengine Ark Seedance 独立请求协议插件。",
"documentation": "<当前插件的完整 documentation,由 README.md 与 docs/interface.md 拼接而成;为避免 JSON 递归,此处不重复展开正文。>",
"permissions": [
"generation.run",
"media.read"
],
"configuration": {
"fields": [
{
"name": "apiKey",
"type": "secret",
"label": "API Key",
"required": true
}
]
},
"contributes": {
"providers": [
{
"id": "volcengine-ark-video",
"label": "Volcengine Ark Seedance",
"capabilities": [
"video"
],
"scopes": [
"admin.system-channel",
"user.custom-channel",
"canvas",
"creation",
"agent"
],
"baseUrl": "https://ark.cn-beijing.volces.com",
"requiresPublicMediaUrls": true,
"auth": {
"type": "bearer",
"field": "apiKey"
},
"parameters": [
{
"name": "model",
"type": "string",
"required": true,
"mapping": "model",
"description": "Ark endpoint/model ID。"
},
{
"name": "prompt",
"type": "string",
"required": true,
"mapping": "content[type=text].text",
"description": "视频提示词。"
},
{
"name": "images",
"type": "media[]",
"required": false,
"mapping": "content[type=image_url]",
"description": "first_frame、last_frame、reference_image 等 role 原样映射。"
},
{
"name": "videos",
"type": "media[]",
"required": false,
"mapping": "content[type=video_url]",
"description": "reference_video。"
},
{
"name": "audios",
"type": "media[]",
"required": false,
"mapping": "content[type=audio_url]",
"description": "reference_audio/reference_voice。"
},
{
"name": "aspectRatio",
"type": "string",
"required": false,
"mapping": "ratio",
"description": "输出画幅。"
},
{
"name": "resolution",
"type": "string",
"required": false,
"mapping": "resolution",
"description": "输出分辨率档位。"
},
{
"name": "duration",
"type": "integer",
"required": false,
"mapping": "duration",
"description": "输出时长秒数。"
},
{
"name": "generateAudio",
"type": "boolean",
"required": false,
"mapping": "generate_audio",
"description": "是否生成音频。"
},
{
"name": "watermark",
"type": "boolean",
"required": false,
"mapping": "watermark",
"description": "是否带水印。"
},
{
"name": "seed",
"type": "integer",
"required": false,
"mapping": "seed",
"description": "providerOptions seed。"
},
{
"name": "camera_fixed",
"type": "boolean",
"required": false,
"mapping": "camera_fixed",
"description": "providerOptions camera_fixed。"
}
],
"validations": [
{
"assert": {
"$lte": [
{
"$len": {
"$ref": "request.images"
}
},
9
]
},
"message": "Seedance 最多支持 9 张参考图片"
},
{
"assert": {
"$lte": [
{
"$len": {
"$ref": "request.videos"
}
},
3
]
},
"message": "Seedance 最多支持 3 个参考视频"
},
{
"assert": {
"$lte": [
{
"$len": {
"$ref": "request.audios"
}
},
3
]
},
"message": "Seedance 最多支持 3 个参考音频"
},
{
"assert": {
"$or": [
{
"$eq": [
{
"$len": {
"$ref": "request.audios"
}
},
0
]
},
{
"$gt": [
{
"$add": [
{
"$len": {
"$ref": "request.images"
}
},
{
"$len": {
"$ref": "request.videos"
}
}
]
},
0
]
}
]
},
"message": "Seedance 不支持纯音频或文本+音频,请同时添加参考图片或参考视频"
}
],
"create": {
"method": "POST",
"path": "/api/v3/contents/generations/tasks",
"contentType": "application/json",
"body": {
"model": {
"$ref": "request.model"
},
"content": {
"$concatArrays": [
[
{
"type": "text",
"text": {
"$ref": "request.prompt"
}
}
],
{
"$map": {
"from": {
"$sortByOrder": {
"$ref": "request.images"
}
},
"as": "media",
"in": {
"type": "image_url",
"image_url": {
"url": {
"$ref": "media.value"
}
},
"role": {
"$coalesce": [
{
"$ref": "media.role"
},
"reference_image"
]
}
}
}
},
{
"$map": {
"from": {
"$sortByOrder": {
"$ref": "request.videos"
}
},
"as": "media",
"in": {
"type": "video_url",
"video_url": {
"url": {
"$ref": "media.value"
}
},
"role": {
"$coalesce": [
{
"$ref": "media.role"
},
"reference_video"
]
}
}
}
},
{
"$map": {
"from": {
"$sortByOrder": {
"$ref": "request.audios"
}
},
"as": "media",
"in": {
"type": "audio_url",
"audio_url": {
"url": {
"$ref": "media.value"
}
},
"role": {
"$coalesce": [
{
"$ref": "media.role"
},
"reference_audio"
]
}
}
}
}
]
},
"ratio": {
"$coalesce": [
{
"$ref": "request.aspectRatio"
},
"16:9"
]
},
"resolution": {
"$coalesce": [
{
"$ref": "request.resolution"
},
"720p"
]
},
"duration": {
"$if": {
"condition": {
"$gt": [
{
"$ref": "request.duration"
},
0
]
},
"then": {
"$ref": "request.duration"
},
"else": 5
}
},
"generate_audio": {
"$ref": "request.generateAudio"
},
"watermark": {
"$ref": "request.watermark"
},
"seed": {
"$omitEmpty": {
"$ref": "request.providerOptions.volcengine-ark-video.seed"
}
},
"camera_fixed": {
"$omitEmpty": {
"$ref": "request.providerOptions.volcengine-ark-video.camera_fixed"
}
}
}
},
"poll": {
"method": "GET",
"path": "/api/v3/contents/generations/tasks/{{taskId}}"
},
"cancel": {
"method": "DELETE",
"path": "/api/v3/contents/generations/tasks/{{taskId}}"
},
"response": {
"taskId": {
"$coalesce": [
{
"$ref": "response.id"
},
{
"$ref": "response.task_id"
},
{
"$ref": "response.data.id"
},
{
"$ref": "taskId"
}
]
},
"status": {
"$coalesce": [
{
"$ref": "response.status"
},
{
"$ref": "response.data.status"
},
"pending"
]
},
"message": {
"$coalesce": [
{
"$ref": "response.error.message"
},
{
"$ref": "response.message"
},
{
"$ref": "response.fail_reason"
}
]
},
"videos": {
"$coalesce": [
{
"$ref": "response.content.video_url"
},
{
"$ref": "response.video_url"
},
{
"$ref": "response.output.video_url"
},
{
"$ref": "response.data.video_url"
}
]
},
"usage": {
"$ref": "response.usage"
},
"errorPaths": [
"error.code"
],
"resultEphemeral": true
}
}
]
}
}
```
<!-- YINGCE_MANIFEST_CONTRACT_END -->