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stitch-loop

Teaches agents to iteratively build websites using Stitch with an autonomous baton-passing loop pattern

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SKILL.md
Quality
Evals
Security

Evaluation results

100%

18%

Picking Up the Build Loop

Baton file authoring

Criteria
Without context
With context

YAML frontmatter present

100%

100%

page field in frontmatter

0%

100%

Page not in sitemap

100%

100%

Roadmap page selected

100%

100%

Design system block included

100%

100%

Design system copied accurately

100%

100%

Page structure in prompt

100%

100%

Rationale documented

100%

100%

Page filename format

0%

100%

One-line description in body

40%

100%

Without context: $0.2867 · 1m 21s · 12 turns · 77 in / 4,267 out tokens

With context: $0.2822 · 1m 5s · 13 turns · 440 in / 2,843 out tokens

100%

8%

Merging a Generated Page into the Live Site

Page integration into site

Criteria
Without context
With context

HTML moved to site/public/

100%

100%

Asset paths relative

100%

100%

Contact nav link wired in integrated page

100%

100%

Nav links wired in index.html

100%

100%

Nav links wired in about.html

100%

100%

SITE.md sitemap updated

100%

100%

Next-prompt.md updated

100%

100%

Baton YAML frontmatter

0%

100%

Design system in baton

100%

100%

Integration log created

100%

100%

Without context: $0.4235 · 1m 53s · 16 turns · 65 in / 6,234 out tokens

With context: $0.7246 · 2m 18s · 26 turns · 25 in / 8,820 out tokens

100%

Updating the Stitch Project Registry

metadata.json schema maintenance

Criteria
Without context
With context

pricing screen added

100%

100%

screen id field

100%

100%

sourceScreen field

100%

100%

Canvas x/y position

100%

100%

Width and height fields

100%

100%

Existing screens preserved

100%

100%

Project fields preserved

100%

100%

updateTime refreshed

100%

100%

Script created

100%

100%

Update log created

100%

100%

Without context: $0.3530 · 1m 10s · 15 turns · 15 in / 4,998 out tokens

With context: $0.4868 · 1m 34s · 19 turns · 314 in / 6,355 out tokens

Repository
google-labs-code/stitch-skills
Evaluated
Agent
Claude Code
Model
Claude Sonnet 4.6

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