How HeyGen's MCP Server Exposes Video Generation to Agents

HeyGen, which generates videos with AI avatars and voices, has an MCP server that lets an assistant such as ChatGPT, Claude or Cursor make a HeyGen video without the user opening HeyGen. MCP, the Model Context Protocol, is an open standard Anthropic published for connecting AI apps to outside tools, and HeyGen's guide says any app that supports it reaches the same server. The connection exposes a small set of tools built around one call, generate a video, which takes a plain-language brief and passes it to HeyGen's Video Agent, the same engine behind the describe-your-video box in HeyGen's web app. The agent chooses the avatar, writes the script, lays out the scenes and renders. The other tools support that call by listing the user's avatars and voices, checking whether a render has finished and checking the remaining credit balance.

Because the assistant asks for an outcome instead of driving HeyGen's API step by step, a video can be the last step of work already happening in the chat. HeyGen's post linking the guide pitches a clinician turning notes they already wrote into a month of clinic videos, and a later HeyGen guide walks through Claude reading a week of a team's Slack messages, drafting a script and handing it to HeyGen to render. The MCP guide says finished videos land in the user's existing HeyGen account and draw on that plan's credits, with no separate MCP pricing.

Access works through sign-in rather than a pasted key. The user connects HeyGen in the assistant's connector settings and approves access on a HeyGen login page, after which, HeyGen says, the assistant holds only a scoped token that can be revoked. The guide contrasts this with the older approach of pasting a raw API key, which carried full account access, into a config file or a chat.