Grammarly · agent Twin Score 48

Grammarly capability matrix

Grammarly is the writing assistant in the browser, desktop, and keyboard: grammar, tone, and generative rewrite. It is a human overlay on Gmail, Docs, and Slack. A full agent API is not the product; you do not send your company's emails through Grammarly as JSON. High human, modest agent — another Twin Pages illustration. Twin Score on this directory is 86 for humans and 48 for agents, using the public rubric (interface, onboarding, human docs, collaboration, support, pricing fairness, accessibility, reliability versus API quality, MCP or tool surface, CLI, structured docs, machine auth, quotas, determinism, and skill packaging). Grammarly is sold by Grammarly, founded 2009, headquartered in San Francisco, USA. Pricing in public materials: Free; Pro; Business and Enterprise. Generative features on paid plans. Machine capabilities we record: API basic, MCP none, CLI none, docs basic, auth Account; limited business APIs. This page is editorial, not a star rating scraped from users.