Oh My Cassette: MCP tool for Hermes Agent

Chat-driven AI video editing plugin and MCP server for Claude Code, Codex and Hermes

What Oh My Cassette does

Pointed at a folder of raw clips, the agent watches every clip, picks the shots, plans the cut, syncs it to the beat and renders, all from a chat prompt, so editing can happen from a phone through the agent rather than a desktop timeline. Every turn returns a timeline digest and a clickable contact sheet, one frame per clip, before a single frame renders, so the agent's plan can be approved first.

The actual editing, music matching, subtitles, transitions and picture-in-picture run on the Cassette platform rather than inside the agent, so token cost stays limited to the brief and the digests rather than the footage itself; one case recording that produced a full edit cost roughly four dollars in Claude Opus 5 API usage for 55K output tokens and 2.33M billed input tokens. It installs as a Claude Code or Codex plugin, or as a local MCP server for Hermes, OpenCode or any other MCP host.

Key features

Chat-to-edit workflow: describe the cut, the agent handles shot selection and pacing
Automatic music matching synced to the beat and rhythm of the footage
Approval gate: a timeline digest and contact sheet before any frame renders
Rendering, music and effects run on the Cassette platform, not on local compute
Installs as a Claude Code/Codex plugin or a local MCP server for Hermes and OpenCode

When to use it

Editing a travel vlog or similar montage from raw clips through a single chat prompt
Reviewing a proposed cut as a contact sheet before committing to a render
Running video editing from a phone by driving it entirely through an agent in chat

Who it is for: Agent users who want to turn raw video clips into a finished montage from a chat prompt, without opening an editor.

How it fits with Hermes Agent

Oh My Cassette runs as a local MCP server for Hermes Agent, alongside its native plugin paths for Claude Code and Codex, documented in its own Hermes setup section.

How to install Oh My Cassette

These commands are copied from the project's README. Check the repository for the latest steps before you run them.

claude plugin marketplace add Cassette-Editor/oh-my-cassette
claude plugin install oh-my-cassette@cassette-editor

Requirements: Python 3.11-3.13, ffmpeg, and a Cassette account

FAQ

What is Oh My Cassette?

Oh My Cassette is an AI video editing plugin and MCP server that turns a chat description and a folder of raw clips into a finished, beat-synced cut rendered on the Cassette platform.

Does Oh My Cassette work with Hermes Agent?

Yes, it runs as a local MCP server for Hermes Agent, documented alongside its Claude Code and Codex plugin install paths and its OpenCode setup.

What do I need to run Oh My Cassette?

You need Python 3.11 to 3.13, ffmpeg installed, and a Cassette account, since the actual rendering and effects run on the Cassette platform rather than locally.