What it does

Supercode is an extension for Claude, Codex and Cursor that works alongside your coding agent. The site says it removes redundant context before it reaches the agent and claims up to 60% lower token usage, with a token-saving mode you can set to off, basic or max. It also includes a curated catalog of agent skills, grouped into collections such as Code Excellence, Frontend and Design, Agent Productivity, Clean Architecture, Testing and Reliability, Documentation and Developer Experience. The site says each skill can be installed in a single click. For spec-driven development, Supercode gives the agent a structure for turning a stream of thought into a feature spec, with guided questions that end in a SPEC.md file, and then carrying the work through. Separate install buttons are provided for Claude, Codex and Cursor.

Capabilities

Context trimming that the site says cuts token usage by up to 60%
Token-saving modes: off, basic and max
Curated skills catalog of hand-picked collections
One-click skill install
Spec-driven workflow that produces a SPEC.md
Install options for Claude, Codex and Cursor

When to use it

Hitting usage limits too quickly with an AI coding agent
Starting a feature from rough ideas and turning them into a spec
Finding vetted agent skills for frontend, architecture or testing work
Keeping long agent sessions focused as context grows