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>
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VicoHu
2026-09-17 17:52:52 +08:00
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# Volcengine Ark Agent Plan Seedance 接口字段
## 协议身份
- 插件 ID:`volcengine-ark-agent-plan-seedance`。
- Provider ID:`volcengine-ark-agent-plan-video`。
- 能力:`video`。
- 默认 Base URL:`https://ark.cn-beijing.volces.com`。
- 鉴权驱动:`bearer`。
- 创建:`POST /api/plan/v3/contents/generations/tasks`。
- 查询:`GET /api/plan/v3/contents/generations/tasks/{{taskId}}`。
- 取消:`DELETE /api/plan/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/plan/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":{"$ref":"request.providerOptions.volcengine-ark-agent-plan-video.seed"}}` |
| `create.body.camera_fixed` | `{"$omitEmpty":{"$ref":"request.providerOptions.volcengine-ark-agent-plan-video.camera_fixed"}}` |
| `poll.method` | `"GET"` |
| `poll.path` | `"/api/plan/v3/contents/generations/tasks/{{taskId}}"` |
| `poll.contentType` | `"application/json"` |
| `cancel.method` | `"DELETE"` |
| `cancel.path` | `"/api/plan/v3/contents/generations/tasks/{{taskId}}"` |
| `cancel.contentType` | `"application/json"` |
## Provider 扩展键
- `providerOptions.volcengine-ark-agent-plan-video.camera_fixed`
- `providerOptions.volcengine-ark-agent-plan-video.seed`
动态模型或工作流允许使用文档声明的完整 `parameters/input/extra_body` 对象;该对象是协议本身的开放 schema,不会被宿主裁剪。
## 响应映射逐字段清单
| 映射位置 | 上游路径或转换表达式 |
| --- | --- |
| `response.taskId` | `{"$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
Agent Plan 专属接入:创建/查询/取消走 /api/plan/v3/contents/generations/tasks;请求体与官方 Seedance 协议一致,但必须使用 Agent Plan 专属 API Key 与 AFP 额度,不能与 /api/v3 官方 Key 混用。
<!-- 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-agent-plan-seedance",
"name": "Volcengine Ark Agent Plan Seedance",
"version": "2.0.0",
"author": "Volcengine / 影策",
"description": "Volcengine Ark Agent Plan 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-agent-plan-video",
"label": "Volcengine Ark Agent Plan 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/plan/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": {
"$ref": "request.providerOptions.volcengine-ark-agent-plan-video.seed"
}
},
"camera_fixed": {
"$omitEmpty": {
"$ref": "request.providerOptions.volcengine-ark-agent-plan-video.camera_fixed"
}
}
}
},
"poll": {
"method": "GET",
"path": "/api/plan/v3/contents/generations/tasks/{{taskId}}"
},
"cancel": {
"method": "DELETE",
"path": "/api/plan/v3/contents/generations/tasks/{{taskId}}"
},
"response": {
"taskId": {
"$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 -->