reka-mcp 0.1.6

Official Reka MCP server for video understanding

Reka Vision MCP Server

mcp-name: ai.reka/mcp

MCP server that lets AI agents upload, index, search, and analyze videos through the Reka Vision API. Agents can search across videos using natural language, ask questions about video content with visual analysis, and read processed data like transcripts, captions, scenes, and detected objects.

Quick Start

# Run the published local stdio server with your Reka API key
REKA_VISION_API_KEY="your-api-key" uvx reka-mcp

For MCP clients that need explicit command configuration:

{
  "command": "uvx",
  "args": ["reka-mcp"],
  "env": {
    "REKA_VISION_API_KEY": "your-api-key-here"
  }
}

For local development:

uv sync
uv run pre-commit install
REKA_VISION_API_KEY="test-key" uv run reka-mcp

The default mode is local stdio. In local mode, REKA_VISION_API_KEY is read once from the process environment and used for all requests.

Hosted Mode

Hosted mode runs the same MCP tools over Streamable HTTP. It does not use a process-wide Reka API key. Instead, each MCP HTTP request must include the user's key in X-Reka-API-Key; the server forwards that value to the Reka Vision API as x-api-key for that request only.

Production-style hosted startup:

REKA_MCP_MODE=hosted \
REKA_MCP_HTTP_HOST=0.0.0.0 \
PORT=8080 \
uv run reka-mcp

Endpoints:

• MCP Streamable HTTP: http://<host>:<port>/mcp
• Health check: http://<host>:<port>/health

Hosted clients must send:

X-Reka-API-Key: your-api-key

REKA_MCP_AUTH_TOKEN is optional MCP transport auth. When set, HTTP clients must also send Authorization: Bearer <token>.

index_video works the same in both modes: it polls the feature DAG until all requested features are ready (or times out). After upload_video, poll get_video until the video status is uploaded, then call index_video.

Run Hosted Mode Locally

Hosted mode enables DNS rebinding protection. Its default allowed hosts and origins are production/staging domains, so override them for localhost testing:

REKA_MCP_MODE=hosted \
REKA_MCP_TRANSPORT=http \
REKA_MCP_HTTP_HOST=0.0.0.0 \
REKA_MCP_HTTP_PORT=8080 \
PORT=8080 \
REKA_MCP_HTTP_PATH=/mcp \
REKA_MCP_ALLOWED_HOSTS="localhost:*,127.0.0.1:*" \
REKA_MCP_ALLOWED_ORIGINS="http://localhost:*,http://127.0.0.1:*" \
uv run reka-mcp

Then connect to http://localhost:8080/mcp and configure your MCP client or inspector to send X-Reka-API-Key. Check the server with:

curl -H "Host: localhost:8080" http://localhost:8080/health

Claude Desktop Setup

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "reka-mcp": {
      "command": "uvx",
      "args": ["reka-mcp"],
      "env": {
        "REKA_VISION_API_KEY": "your-api-key-here"
      }
    }
  }
}

Cursor Setup

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "reka-mcp": {
      "command": "uvx",
      "args": ["reka-mcp"],
      "env": {
        "REKA_VISION_API_KEY": "your-api-key-here"
      }
    }
  }
}

Claude Code Setup

claude mcp add reka-mcp -e REKA_VISION_API_KEY=your-api-key-here -- uvx reka-mcp

Updating

To update to the latest version, clear the cached package and restart your client:

uv cache clean reka-mcp

To check which version you're running:

uvx reka-mcp --version

Available Tools

Tool	Description
upload_video	Upload a video from a URL
list_videos	List videos in your account or a group
get_video	Get video details, metadata, and feature status
update_video	Update a video's name, title, description, or group
delete_video	Permanently delete a video and all indexed data
create_group	Create a new video group
list_groups	List all video groups
delete_group	Delete a video group
index_video	Index a video for search/QA/analysis. Waits until all requested features are ready (2-10 min).
search_videos	Semantic search across indexed videos
ask_video	Ask questions about video content with visual analysis
get_transcript	Get transcript as text, segments, or words
get_captions	Get AI-generated visual descriptions
get_scenes	Get detected scene boundaries
get_feature_catalog	List available features and dependencies
summarize_video	Compact overview of video content and status

Environment Variables

Variable	Default	Description
REKA_MCP_MODE	local	Runtime mode: local or hosted
REKA_VISION_API_KEY	(required in local mode)	API key from https://platform.reka.ai. Not used as the primary auth source in hosted mode.
REKA_VISION_API_URL	https://vision-agent.api.reka.ai	API base URL
REKA_MCP_INDEX_TIMEOUT	600	Max seconds to wait for indexing
REKA_MCP_POLL_INTERVAL	5	Seconds between index status polls
REKA_MCP_TRANSPORT	stdio in local, http in hosted	Transport: stdio or http
REKA_MCP_HTTP_HOST	127.0.0.1 in local, 0.0.0.0 in hosted	Host for HTTP transport
REKA_MCP_HTTP_PORT	8080	Port for HTTP transport. In hosted mode, PORT takes precedence when set.
REKA_MCP_HTTP_PATH	/mcp	Streamable HTTP endpoint path
REKA_MCP_ALLOWED_HOSTS	mcp.reka.ai,mcp-staging.reka.ai in hosted	Comma-separated allowed HTTP Host values for DNS rebinding protection
REKA_MCP_ALLOWED_ORIGINS	https://mcp.reka.ai,https://mcp-staging.reka.ai in hosted	Comma-separated allowed Origin values
REKA_MCP_AUTH_TOKEN	(none)	Optional bearer token for HTTP transport auth. Clients must send Authorization: Bearer <token> when set.

Release Checks

cd /path/to/reka-mcp
uv build
uv run twine check dist/*
# Publish only after explicit approval:
uv run twine upload dist/*

Example Workflows

Search and Visual Q&A

Agent: search_videos(query="revenue chart")
→ [{video_id: "v1", start: 30.0, end: 35.0, score: 0.95}]

Agent: ask_video(question="What numbers are on the chart?",
                 video_id="v1", start=30.0, end=35.0)
→ {answer: "Q3 revenue of $4.2M, up 32%...", conversation_id: "c1"}

Agent: ask_video(question="What's the percentage change?",
                 conversation_id="c1")
→ {answer: "Revenue increased by 32% quarter-over-quarter..."}

Cross-Video Comparison

Agent: search_videos(query="quarterly revenue")
→ [{video_id: "v1", start: 30.0, ...}, {video_id: "v2", start: 120.0, ...}]

Agent: ask_video(question="How do the revenue figures compare?",
                 videos=[
                   {video_id: "v1", start: 30.0, end: 35.0},
                   {video_id: "v2", start: 120.0, end: 125.0}
                 ])
→ {answer: "Video 1 shows Q3 at $4.2M while Video 2 shows Q4 at $5.1M..."}

Video Summary and Transcript Extraction

Agent: summarize_video(video_id="v1")
→ {name: "Lecture 3", duration_seconds: 3600, features: {...},
   scene_count: 42, transcript_preview: "Welcome to today's lecture..."}

Agent: get_transcript(video_id="v1", format="segments", start=0, end=60)
→ {data: [{start: 0.0, end: 5.2, text: "Welcome..."}, ...],
   total_count: 12, truncated: false}