CtrlK
BlogDocsLog inGet started
Tessl Logo

coding

Rosetta coding skill for implementation with KISS/SOLID/DRY principles, zero-tolerance quality, multi-environment awareness, and systematic validation. Use when implementing features, fixing bugs, or making code changes.

57

1.05x
Quality

41%

Does it follow best practices?

Impact

82%

1.05x

Average score across 3 eval scenarios

SecuritybySnyk

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./instructions/r2/core/skills/coding/SKILL.md
SKILL.md
Quality
Evals
Security

Evaluation results

56%

1%

Project Documentation Onboarding

Project documentation file structure

Criteria
Without context
With context

DEPENDENCIES.md flat list

20%

40%

DEPENDENCIES.md columns

53%

66%

TECHSTACK.md stack decisions

100%

100%

CODEMAP.md depth

100%

100%

CODEMAP.md header format — path

13%

0%

CODEMAP.md header format — children count

0%

0%

CODEMAP.md immediate children only

30%

20%

CODEMAP.md excludes noise files

100%

100%

No unsolicited files

100%

100%

97%

5%

Identifier Generation Utility Library

CLI testing harness and SCRIPTS folder usage

Criteria
Without context
With context

CLI harness exists

100%

100%

Intermediate output

100%

100%

SCRIPTS folder location

85%

100%

No mocks in library code

100%

100%

Files under 300 LOC

100%

100%

DEPENDENCIES.md flat list

90%

90%

DEPENDENCIES.md columns

60%

80%

No scope creep

100%

100%

94%

6%

Configuration Isolation for a Flask Service

Multi-environment configuration extraction

Criteria
Without context
With context

Env vars for all 4 targets

40%

75%

No hardcoded secrets in source

100%

100%

DB credentials externalised

100%

100%

No scope creep

100%

100%

TECHSTACK.md stack decisions

100%

100%

DEPENDENCIES.md flat list

100%

90%

No mocks in app code

100%

100%

Files under 300 LOC

100%

100%

Repository
griddynamics/rosetta
Evaluated
Agent
Claude Code
Model
Claude Sonnet 4.6

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.