Understand your videos with Reka AI — search, ask questions, and extract insights.
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Ask a question about one or more videos with visual analysis. Most effective on focused time ranges — use start/end to specify the segment to analyze. BEFORE calling this tool, read the reka://docs/guide resource for recommended workflows. In most cases, you should first: - search_videos to find WHEN something happens, then pass those timestamps here as start/end - segment_video to detect and locate specific objects - get_transcript to read what was said For single-video questions, pass video_id with start/end. For cross-video questions, pass videos — a list of video references with start/end each. For follow-up questions, pass conversation_id from the previous response. You can add start/end to drill into a specific moment while keeping the conversation context. Requires qa_only or full pipeline.
Ask a question about one or more videos with visual analysis. Most effective on focused time ranges — use start/end to specify the segment to analyze. BEFORE calling this tool, read the reka://docs/guide resource for recommended workflows. In most cases, you should first: - search_videos to find WHEN something happens, then pass those timestamps here as start/end - segment_video to detect and locate specific objects - get_transcript to read what was said For single-video questions, pass video_id with start/end. For cross-video questions, pass videos — a list of video references with start/end each. For follow-up questions, pass conversation_id from the previous response. You can add start/end to drill into a specific moment while keeping the conversation context. Requires qa_only or full pipeline.
| Argument | Type | Description |
|---|---|---|
| end | any | |
| start | any | |
| videos | any | |
| question* | string | |
| video_id | any | |
| rationale | any | |
| conversation_id | any |
{
"type": "object",
"$defs": {
"VideoContext": {
"type": "object",
"title": "VideoContext",
"properties": {
"end": {
"type": "number",
"title": "End"
},
"start": {
"type": "number",
"title": "Start"
},
"video_id": {
"type": "string",
"title": "Video Id"
}
}
}
},
"title": "ask_videoArguments",
"required": [
"question"
],
"properties": {
"end": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "End",
"default": null
},
"start": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Start",
"default": null
},
"videos": {
"anyOf": [
{
"type": "array",
"items": {
"$ref": "#/$defs/VideoContext"
}
},
{
"type": "null"
}
],
"title": "Videos",
"default": null
},
"question": {
"type": "string",
"title": "Question"
},
"video_id": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Video Id",
"default": null
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"conversation_id": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Conversation Id",
"default": null
}
}
}Create a new video group. Groups organize videos into collections. Returns the new group's ID and name.
| Argument | Type | Description |
|---|---|---|
| name* | string | |
| rationale | any |
{
"type": "object",
"title": "create_groupArguments",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"title": "Name"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
}
}
}Delete a video group. Videos in the group are not deleted — they are simply removed from the group.
| Argument | Type | Description |
|---|---|---|
| group_id* | string | |
| rationale | any |
{
"type": "object",
"title": "delete_groupArguments",
"required": [
"group_id"
],
"properties": {
"group_id": {
"type": "string",
"title": "Group Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
}
}
}Permanently delete a video and all its indexed data (transcript, captions, embeddings, etc.). This cannot be undone.
| Argument | Type | Description |
|---|---|---|
| video_id* | string | |
| rationale | any |
{
"type": "object",
"title": "delete_videoArguments",
"required": [
"video_id"
],
"properties": {
"video_id": {
"type": "string",
"title": "Video Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
}
}
}Get AI-generated visual descriptions of what happens on screen. Use this to understand the visual content without watching — each caption describes a short segment with timestamps. Use start/end to narrow results. Requires the captions feature (qa_only or full pipeline).
| Argument | Type | Description |
|---|---|---|
| end | any | |
| start | any | |
| video_id* | string | |
| rationale | any | |
| max_results | integer |
{
"type": "object",
"title": "get_captionsArguments",
"required": [
"video_id"
],
"properties": {
"end": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "End",
"default": null
},
"start": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Start",
"default": null
},
"video_id": {
"type": "string",
"title": "Video Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"max_results": {
"type": "integer",
"title": "Max Results",
"default": 50
}
}
}List available video analysis features with their dependencies and descriptions. Use this to understand what features exist and what pipelines to use with index_video.
| Argument | Type | Description |
|---|---|---|
| rationale | any |
{
"type": "object",
"title": "get_feature_catalogArguments",
"properties": {
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
}
}
}Get detected scene boundaries with start/end timestamps. Use this to understand the video's structure, then pass scene timestamps as start/end to: - ask_video for per-scene contextual analysis - segment_video to detect specific objects per scene (scenes typically fit in segment_video's 15s max range) Requires transcript indexed with scene detection (on by default; skipped only if index_video was called with scene_detection=False).
| Argument | Type | Description |
|---|---|---|
| video_id* | string | |
| rationale | any | |
| max_results | integer |
{
"type": "object",
"title": "get_scenesArguments",
"required": [
"video_id"
],
"properties": {
"video_id": {
"type": "string",
"title": "Video Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"max_results": {
"type": "integer",
"title": "Max Results",
"default": 200
}
}
}Get the spoken words in a video. Use this instead of ask_video when you need to read what was said — it returns the actual text, not a summary. Use start/end to narrow results for long videos. Requires the transcript feature to be indexed.
| Argument | Type | Description |
|---|---|---|
| end | any | |
| start | any | |
| format | string | |
| video_id* | string | |
| max_chars | integer | |
| rationale | any | |
| max_results | integer |
{
"type": "object",
"title": "get_transcriptArguments",
"required": [
"video_id"
],
"properties": {
"end": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "End",
"default": null
},
"start": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Start",
"default": null
},
"format": {
"enum": [
"text",
"segments",
"words"
],
"type": "string",
"title": "Format",
"default": "text"
},
"video_id": {
"type": "string",
"title": "Video Id"
},
"max_chars": {
"type": "integer",
"title": "Max Chars",
"default": 10000
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"max_results": {
"type": "integer",
"title": "Max Results",
"default": 100
}
}
}Get detailed information about a video including upload status, metadata (duration, resolution, fps), and per-feature indexing status. Use this to check if upload or indexing is complete. The 'url' field is a short-lived HTTPS presigned URL (expires within hours) — fetch immediately and do not store; call get_video again for a fresh URL when needed.
| Argument | Type | Description |
|---|---|---|
| video_id* | string | |
| rationale | any |
{
"type": "object",
"title": "get_videoArguments",
"required": [
"video_id"
],
"properties": {
"video_id": {
"type": "string",
"title": "Video Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
}
}
}Index a video for search, QA, or full analysis. Processes the video through a pipeline of AI features. Typically takes 3-7 minutes; longer for long videos or the 'full' pipeline. Times out after 10 minutes by default. Pipelines: - search_only: transcription + captions + embeddings (enables search_videos) - qa_only: transcription + captions (enables ask_video) - full: transcription + captions + embeddings (enables all tools) Scene detection is enabled by default and produces scene boundaries for get_scenes. Pass scene_detection=False to skip it. Prerequisites: if using video_id, the video must be in 'uploaded' status. Use get_video to check status before calling this tool.
| Argument | Type | Description |
|---|---|---|
| pipeline | string | |
| video_id* | string | |
| rationale | any | |
| scene_detection | boolean |
{
"type": "object",
"title": "index_video_hostedArguments",
"required": [
"video_id"
],
"properties": {
"pipeline": {
"enum": [
"search_only",
"qa_only",
"full"
],
"type": "string",
"title": "Pipeline",
"default": "search_only"
},
"video_id": {
"type": "string",
"title": "Video Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"scene_detection": {
"type": "boolean",
"title": "Scene Detection",
"default": true
}
}
}List all video groups. Use list_videos with a group_id to see videos in a specific group.
| Argument | Type | Description |
|---|---|---|
| rationale | any |
{
"type": "object",
"title": "list_groupsArguments",
"properties": {
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
}
}
}List all videos in your account, or filter to a specific group by passing group_id. Shows upload status and which features have been indexed for each video. Each video's 'url' is a short-lived HTTPS presigned URL (expires within hours) — fetch immediately and do not store; call list_videos or get_video again for a fresh URL when needed.
| Argument | Type | Description |
|---|---|---|
| group_id | any | |
| rationale | any |
{
"type": "object",
"title": "list_videosArguments",
"properties": {
"group_id": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Group Id",
"default": null
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
}
}
}Find WHEN and WHERE something happens across your videos. Returns timestamped results ranked by relevance — use these timestamps as start/end in ask_video for focused analysis. This is the recommended first step for most questions. Instead of asking ask_video about the entire video, search first to narrow down the relevant moments. Each result's 'video_url' is a short-lived HTTPS presigned URL (expires within hours) — fetch immediately and do not store; call search_videos or get_video again for a fresh URL when needed. Requires search_only or full pipeline.
| Argument | Type | Description |
|---|---|---|
| query* | string | |
| group_id | any | |
| rationale | any | |
| video_ids | any | |
| max_results | integer |
{
"type": "object",
"title": "search_videosArguments",
"required": [
"query"
],
"properties": {
"query": {
"type": "string",
"title": "Query"
},
"group_id": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Group Id",
"default": null
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"video_ids": {
"anyOf": [
{
"type": "array",
"items": {
"type": "string"
}
},
{
"type": "null"
}
],
"title": "Video Ids",
"default": null
},
"max_results": {
"type": "integer",
"title": "Max Results",
"default": 10
}
}
}Detect objects in a video segment using text prompts. Describe what to look for and get per-frame detections with bounding boxes and confidence scores. Prompt tips: - Use broad, visual categories: 'animal', 'vehicle', 'person', 'text on screen' - Specific labels ('rabbit', 'Toyota') are less reliable — the detector matches visual patterns, not semantic concepts - Best for confirming whether a category of object appears in a time window, not for precise identification How to pick a time range: - Use search_videos to find WHEN something appears, then pass those timestamps here - Use get_scenes to scan systematically — call segment_video once per scene (scenes typically fit in the 15s window) - Or pass any range you already know Maximum range is 15 seconds per call; for longer spans, make multiple calls with consecutive windows. Does NOT require any feature indexing — works on any uploaded video.
| Argument | Type | Description |
|---|---|---|
| end | any | |
| start* | number | |
| prompts* | array | |
| video_id* | string | |
| rationale | any | |
| threshold | number |
Start here. Get a compact overview of a video: metadata, which features are indexed, a transcript preview, and scene count. Use this to decide which tools to call next — then use segment_video to detect specific objects in time ranges of interest.
| Argument | Type | Description |
|---|---|---|
| video_id* | string | |
| rationale | any |
{
"type": "object",
"title": "summarize_videoArguments",
"required": [
"video_id"
],
"properties": {
"video_id": {
"type": "string",
"title": "Video Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
}
}
}Update a video's display name, title, description, or move it to a different group. At least one field must be provided. To remove a video from its group, pass group_id as null.
| Argument | Type | Description |
|---|---|---|
| name | any | |
| title | any | |
| group_id | any | |
| video_id* | string | |
| rationale | any | |
| move_group | boolean | |
| description | any |
{
"type": "object",
"title": "update_videoArguments",
"required": [
"video_id"
],
"properties": {
"name": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Name",
"default": null
},
"title": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Title",
"default": null
},
"group_id": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Group Id",
"default": null
},
"video_id": {
"type": "string",
"title": "Video Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"move_group": {
"type": "boolean",
"title": "Move Group",
"default": false
},
"description": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Description",
"default": null
}
}
}Upload a video from a URL. Returns a video_id. Local file paths are not accepted; upload files outside the MCP server and pass a reachable video_url. The upload runs asynchronously — poll get_video until status is 'uploaded', then call index_video to enable search and analysis.
| Argument | Type | Description |
|---|---|---|
| name | any | |
| group_id | any | |
| rationale | any | |
| video_url* | string | |
| description | any |
{
"type": "object",
"title": "upload_videoArguments",
"required": [
"video_url"
],
"properties": {
"name": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Name",
"default": null
},
"group_id": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Group Id",
"default": null
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"video_url": {
"type": "string",
"title": "Video Url"
},
"description": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Description",
"default": null
}
}
}{
"type": "object",
"title": "segment_videoArguments",
"required": [
"video_id",
"prompts",
"start"
],
"properties": {
"end": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "End",
"default": null
},
"start": {
"type": "number",
"title": "Start"
},
"prompts": {
"type": "array",
"items": {
"type": "string"
},
"title": "Prompts"
},
"video_id": {
"type": "string",
"title": "Video Id"
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Rationale",
"default": null
},
"threshold": {
"type": "number",
"title": "Threshold",
"default": 0.5
}
}
}