Introduction

Rizz is the lightest, most connectable coding agent harness. It's a CLI-installable coding agent loop — model-call → tool-dispatch → tool-result → repeat — with interrupt, compression, budget, and fallback. Single-agent and minimal by default (the “Pi-class front door”); Hermes-class power on demand behind an opt-in /workspace switch.

Three principles#

• Extremely lightweight — minimal dependencies, fast cold start, small footprint, enforced by a CI footprint budget (the build fails if size/cold-start regress).
• Provider-agnostic — subscription /login, bring-your-own-key, or cloud creds across a curated catalog. No model lock-in; switching never touches your code or sessions.
• A hub, not an island — callable by any tool (print/JSON, RPC, SDK; MCP/ACP) and connects *to* Cursor / Claude / Codex rather than replacing them.

Open-core: the core flips to open source (MIT) at v1; any paid layer stays separate.