CtrlK
BlogDocsLog inGet started
Tessl Logo

spec-driven-development

Creates specs before coding. Use when starting a new project, feature, or significant change and no specification exists yet. Use when drafting a PRD or requirements document with objectives and scope, or when requirements are unclear, ambiguous, or only exist as a vague idea. Use when a single requirement spans several independently testable capabilities and needs decomposing into a capability map of modules before specifying.

80

2.36x
Quality

81%

Does it follow best practices?

Impact

97%

2.36x

Average score across 2 eval scenarios

SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security
Preview
This is a new way to view eval results. We're still working on it, so the layout may change.
RunTypeDateStatus

baseline vs usage-spec

With / without context

Completed
With / without context

Completed

Eval run

01a096f5-a216-736c-b553-1a20420acf77

Run

Stats are not available yet

The run is available. Its result stats will appear here when they are ready.

Repository
addyosmani/agent-skills
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.