Spiral

A writing partner for you and your agent.

An AI writing partner that helps people and agents produce writing in a reusable personal or brand voice; version 4.0 adds a stylometry-based Style Engine, MCP, and CLI access.

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releasePRIMARY2026-06-04

Spiral 4.0 adds Style Engine stylometry and MCP support

Spiral 4.0 added a stylometry-based Style Engine for matching a writer or brand voice and shipped MCP plus CLI access for agent workflows. It also now plugs into Claude Code, Codex, and OpenClaw, and the base price drops to $15.