A step-by-step workflow for building a multi-page website with Google Stitch over several iterations. It uses project files such as SITE.md, DESIGN.md, and next-prompt.md to track the work.

Use it to plan the next Stitch prompt, integrate generated pages, and check progress while building a site.

It keeps page generation, integration, and verification organized across repeated design-and-build cycles.

stitch-loop — Skill for Codex by PracticalSwan

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add PracticalSwan/agent-skills --skill stitch-loop

Clone the repo

git clone --depth 1 https://github.com/PracticalSwan/agent-skills

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/practicalswan/agent-skills/stitch-loop/github.svg)](https://agentmods.dev/skills/practicalswan/agent-skills/stitch-loop)

Your own site

<a href="https://agentmods.dev/skills/practicalswan/agent-skills/stitch-loop"><img src="https://agentmods.dev/badge/skills/practicalswan/agent-skills/stitch-loop/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/practicalswan/agent-skills/stitch-loop"><img src="https://agentmods.dev/badge/skills/practicalswan/agent-skills/stitch-loop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,268 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00034	$0.01268
Opus 5	$0.00017	$0.00634
Sonnet 5	$0.00007	$0.00254
Haiku 4.5	$0.00003	$0.00127

Measured 4d ago against content hash dcfcb4a52048, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

stitch-loop scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

stitch-loop/SKILL.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Stitch Build Loop

This skill is a catalog-normalized import from https://github.com/google-labs-code/stitch-skills at commit 7b53207b94e62911777d53d4238b5f8c88c2b519, source path plugins/stitch-utilities/skills/stitch-loop. The upstream control file was corrected for this workspace: the verified Stitch MCP surface here is design-system oriented, so screen lookup, screen generation, and screen editing tools must be used only when the current host explicitly exposes them.

When to Use This Skill

Use when a multi-page site should be built iteratively with Stitch and baton files.
The task involves Google Stitch project IDs, .stitch/ artifacts, DESIGN.md files, Stitch exports, or Stitch-specific validation.
The broader stitch-design router points here as the narrowest workflow.

Workflow

Read .stitch/next-prompt.md, .stitch/SITE.md, and .stitch/DESIGN.md before generating or integrating pages.
Use stitch-generate-design for screen prompts when tools or the Stitch web UI are available.
When screen-generation MCP tools are absent, prepare the next prompt and record that the web UI/API step is required.
Move generated or exported HTML into the site only after checking the sitemap.
Run local browser verification when a page is integrated into a runnable site.
Update SITE.md, metadata, and next-prompt.md before closing the loop.

Local Assets

examples/, resources/, references/, or reference/ are upstream support material when present. Treat SKILL.md as the source of truth if a support file mentions an unavailable MCP tool.
scripts/ are optional helpers. On Windows, prefer PowerShell or Node equivalents unless Git Bash or WSL is actually available.
Keep generated .stitch/ files out of commits unless the user explicitly wants them as durable examples.

Corrected Stitch MCP Surface

Verified in this workspace on 2026-06-15: create_project, upload_design_md, create_design_system_from_design_md, list_design_systems, and apply_design_system. This 2026-07-29 source refresh did not re-verify a broader live MCP surface. Do not claim list_projects, list_screens, get_project, get_screen, generate_screen_from_text, edit_screens, or generate_variants were used unless the current host exposes those exact tools in the active tool list.

Read the full file on GitHub · 89 lines

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

4d ago Changed dcfcb4a52048
6d ago Changed 905f67597e6a
9d ago First seen · 89 lines · 34 tokens per session scan A c6373ffeadf8

Subscribe to this mod's changes

stitch-loop is a skill published in the GitHub repository PracticalSwan/agent-skills (14 stars, last pushed 5d ago), licensed MIT. It adds 34 tokens to every session and 1,268 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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