Tools

MCP server for explainer videos

The Chasca MCP server lets Claude, Cursor or any Model Context Protocol client make and change explainer videos for you, in the middle of whatever you are already doing.

Base URL https://app.trychasca.com/api

Connect from Claude or ChatGPT

Add Chasca as a connector and sign in: nothing to install and no API key. It works on every plan, and videos count the same as in the app (your free videos, then your plan’s minutes).

Text

https://app.trychasca.com/mcp

Claude (claude.ai and Claude Desktop, on every Claude plan): open Customize → Connectors, then Add → Custom → Web. Paste the address, continue, and sign in to Chasca.
Claude Code: run the command below, then /mcp to sign in.
ChatGPT: Business and Enterprise workspaces can add it as a custom MCP server. Any other MCP client that supports remote servers and OAuth works the same way.

Terminal

claude mcp add --transport http chasca https://app.trychasca.com/mcp

To disconnect an assistant, open Settings → API and MCP in the app.

On your computer, with an API key

A small MCP server, published on npm as @chasca/mcp, that runs on your computer over stdio with Node 20 or later. It talks to the Chasca API with your key, so everything an agent does shows up in your account (marked as created via MCP) and counts like an API call: Plus and above, minutes at 2x.

CHASCA_API_KEY: required. Create one in the app under Settings → API keys.
CHASCA_API_URL: optional, defaults to https://app.trychasca.com/api.

Claude Code

Terminal

claude mcp add chasca \
  -e CHASCA_API_URL=https://app.trychasca.com/api \
  -e CHASCA_API_KEY=chk_live_... \
  -- npx -y @chasca/mcp

Add --scope user to make it available in every project, and check it with claude mcp list or /mcp inside Claude Code.

Claude Desktop

Add Chasca to claude_desktop_config.json (on macOS in ~/Library/Application Support/Claude/, on Windows in %APPDATA%\Claude\), then restart Claude Desktop:

claude_desktop_config.json

{
  "mcpServers": {
    "chasca": {
      "command": "npx",
      "args": ["-y", "@chasca/mcp"],
      "env": {
        "CHASCA_API_URL": "https://app.trychasca.com/api",
        "CHASCA_API_KEY": "chk_live_..."
      }
    }
  }
}

If Claude Desktop can’t find npx, use its full path as command: where npx on Windows or which npx on macOS prints it.

Cursor and other clients

Any client that speaks MCP over stdio works the same way: run npx -y @chasca/mcp with CHASCA_API_KEY set. In Cursor, add the same mcpServers entry to .cursor/mcp.json in your project (or ~/.cursor/mcp.json for all projects).

Tools

Chasca MCP tools, their inputs and what they do
Tool	Inputs	What it does
`chasca_generate_explainer`	input, length, aspect, voice, language, preset, hand, pronunciations, wait	Creates a video from a topic, a question or a whole document. Returns the queued record, or waits until it is ready when wait is true.
`chasca_get_explainer`	id	Status, stage and progress; the video URL once ready; the editable scene graph and every version.
`chasca_change_explainer`	id, change, wait	Changes one thing and keeps the rest exactly as it was. Subtitles, board style, music, watermark, logo, credit line and how a word is said make a free new version; a new voice or format makes a separate video from the same script and drawings, charged like a new one.
`chasca_list_explainers`	limit	Your latest videos, newest first, with a one-line status summary.
`chasca_list_voices`	language	Every narrator, with its tone and a preview.

Generation runs in the background. Agents either poll chasca_get_explainer or pass wait: true to block until the video is ready. Errors come back with a plain hint for the agent, such as how to fix a missing key or when to retry.

Things to ask for

“Make a 1-minute vertical explainer about how our refund policy works, from the attached policy text.”
“Turn this README into a 2:00 explainer in the Blueprint style, narrated by Atlas.”
“Make a vertical copy of my last Chasca video for Reels.”
“Which Spanish voices can narrate for Mexico? Use one to remake yesterday’s video in Spanish.”