c4-context
Expert C4 Context-level documentation specialist. Creates high-level system context diagrams, documents personas, user journeys, system features, and external dependencies.
Install with Tessl CLI
npx tessl i github:sickn33/antigravity-awesome-skills --skill c4-context60
Does it follow best practices?
If you maintain this skill, you can automatically optimize it using the tessl CLI to improve its score:
npx tessl skill review --optimize ./path/to/skillEvaluation — 97%
↑ 1.34xAgent success when using this skill
Validation for skill structure
Evaluation results
93%
13%Parcel Tracking System Context Diagram
Mermaid C4 context diagram syntax
C4Context block
100%
100%
Person elements
100%
100%
System element
100%
100%
System_Ext elements
100%
100%
SystemDb element
0%
100%
Rel elements
100%
100%
No technology details
0%
58%
Human and programmatic users
100%
100%
Diagram title
100%
100%
No low-level detail in descriptions
100%
83%
Without context: $0.1679 · 39s · 8 turns · 9 in / 2,025 out tokens
With context: $0.2409 · 54s · 15 turns · 310 in / 2,497 out tokens
99%
44%Patient Portal Context Documentation
Persona and user journey documentation format
Persona Type field
0%
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
0%
100%
Feature User Journey reference
0%
100%
Numbered journey steps
100%
100%
External system journey
100%
100%
Feature Description field
60%
100%
Stakeholder-friendly language
83%
91%
Without context: $0.2150 · 1m 2s · 9 turns · 10 in / 3,150 out tokens
With context: $0.4611 · 1m 55s · 21 turns · 770 in / 6,115 out tokens
100%
18%Payment Processing Platform — C4 Context Documentation
Complete C4 context documentation structure
Short description present
50%
100%
Long description present
100%
100%
External system Type field
100%
100%
External system Description field
100%
100%
External system Integration Type field
25%
100%
External system Purpose field
37%
100%
Related Documentation section
100%
100%
Context diagram included
100%
100%
Consistent section structure
90%
100%
System boundary shown
100%
100%
No tech details in external system descriptions
100%
100%
Programmatic actors documented
66%
100%
Without context: $0.2443 · 1m 19s · 8 turns · 9 in / 4,358 out tokens
With context: $0.4512 · 1m 59s · 21 turns · 18 in / 6,438 out tokens
- Evaluated
- Agent
- Claude Code
- Model
- Unknown
Table of Contents
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