# Limitry > Limitry is the runtime that decides, at request time, whether a user, workspace, API key or agent may do something at a given cost — usage, credits, quotas, budgets, concurrency and entitlements in one check. ## Documentation Sets - [Abridged documentation](https://stage.limitry.com/docs/llms-small.txt): a compact version of the documentation for Limitry, with non-essential content removed - [Complete documentation](https://stage.limitry.com/docs/llms-full.txt): the full documentation for Limitry ## Notes - The complete documentation includes all content from the official documentation - The content is automatically generated from the same source as the official documentation ## Optional - [OpenAPI specification](https://api.limitry.com/v1/openapi.json): Machine-readable description of the public API. - [Agent skill](https://limitry.com/docs/skill/SKILL.md): A SKILL.md teaching an agent the command line, MCP tools and API.