c4-context

Expert C4 Context-level documentation specialist. Creates high-level system context diagrams, documents personas, user journeys, system features, and external dependencies.

1.34x

Quality

32%

Does it follow best practices?

Impact

97%

1.34x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

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npx tessl skill review --optimize ./skills/c4-context/SKILL.md

Evaluation results

93%

13%

Parcel Tracking System Context Diagram

Mermaid C4 context diagram syntax

Criteria

Without context

With context

C4Context block

100%

Person elements

100%

System element

100%

System_Ext elements

100%

SystemDb element

100%

Rel elements

100%

No technology details

58%

Human and programmatic users

100%

Diagram title

100%

No low-level detail in descriptions

100%

83%

99%

44%

Patient Portal Context Documentation

Persona and user journey documentation format

Criteria

Without context

With context

Persona Type field

100%

Persona Description field

50%

100%

Persona Goals field

50%

100%

Persona Key Features Used

62%

100%

Programmatic user documented

75%

100%

Feature Users field

100%

Feature User Journey reference

100%

Numbered journey steps

100%

External system journey

100%

Feature Description field

60%

100%

Stakeholder-friendly language

83%

91%

100%

18%

Payment Processing Platform — C4 Context Documentation

Complete C4 context documentation structure

Criteria

Without context

With context

Short description present

50%

100%

Long description present

100%

External system Type field

100%

External system Description field

100%

External system Integration Type field

25%

100%

External system Purpose field

37%

100%

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