Agent skill · writing content · sickn33
c4-context
Expert C4 Context-level documentation specialist. Creates high-level system context diagrams, documents personas, user journeys, system features, and external dependencies.
Why this skill is useful
Provides structured templates and best practices for creating C4 context-level documentation that the AI wouldn't reliably generate on its own.
What it needs
About 3k tokens when loaded. Last updated 2026-08-07. 44,571 stars on the source repository.
What this skill does
C4 Context Level: System Context Use this skill when Working on c4 context level: system context tasks or workflows Needing guidance, best practices, or checklists for c4 context level: system context Do not use this skill when The task is unrelated to c4 context level: system context You need a different domain or tool outside this scope Instructions Clarify goals, constraints, and required inputs. Apply relevant best practices and validate outcomes. Provide actionable steps and verification. System Overview Short Description [One-sentence description of what the system does] Long Description [Detailed description of the system's purpose, capabilities, and the problems it solves] Personas [Persona Name] Type: [Human User / Programmatic User / External System] Description: [Who this persona is and what they need] Goals: [What this persona wants to achieve] Key Features Used: [List of features this persona uses] System Features [Feature Name] Description: [What this feature does] Users: [Which personas use this feature] User Journey: [Link to user journey map] User Journeys [Feature Name] - [Persona Name] Journey 1. [Step 1]: [Description] 2. [Step 2]: [Description] 3. [Step 3]: [Description] ... [External System] Integration Journey 1. [Step 1]: [Description] 2. [Step 2]: [Description] ... …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills sickn33/c4-context--8140c9