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.
npx skills add magnusfroste/flowwink --skill copilot-builder-as-mcpgit clone --depth 1 https://github.com/magnusfroste/flowwinkWrote 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.
[](https://agentmods.dev/skills/magnusfroste/flowwink/copilot-builder-as-mcp)<a href="https://agentmods.dev/skills/magnusfroste/flowwink/copilot-builder-as-mcp"><img src="https://agentmods.dev/badge/skills/magnusfroste/flowwink/copilot-builder-as-mcp/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.
<a href="https://agentmods.dev/skills/magnusfroste/flowwink/copilot-builder-as-mcp"><img src="https://agentmods.dev/badge/skills/magnusfroste/flowwink/copilot-builder-as-mcp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00041 | $0.00325 |
| Opus 5 | $0.00020 | $0.00162 |
| Sonnet 5 | $0.00008 | $0.00065 |
| Haiku 4.5 | $0.00004 | $0.00032 |
Grade A, and why
copilot-builder-as-mcp-skill 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 6d 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.
What it actually says
Copilot Builder as First-Class MCP Skill
copilot-action powers the admin /admin/copilot site-builder UI (block-by-block
migration & site generation with create_block / migrate_url / update_footer /
activate_modules tool calls). It is now ALSO exposed as the MCP skill
build_site_step (handler edge:copilot-action, scope both, mcp_exposed=true,
category content, owned by pages module).
One implementation, two consumers:
- Internal:
useCopilot.ts→supabase.functions.invoke('copilot-action', …) - External: any MCP client →
build_site_steptool
The skill is stateless — caller owns conversation history. Loop:
- POST
messages: [{role, content}], currentModules?, migrationState? - Receive
{ message, toolCall? } - Apply toolCall (caller's responsibility — for external claws this typically
means chaining to
migrate_url,create_page_block,manage_global_blocks). - Append result as next user message; repeat until no toolCall.
Registered in src/lib/modules/pages-module.ts skillSeeds + agent_skills row
seeded via migration 20260504185230_*.
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.
- 6d ago First seen · 28 lines · 41 tokens per session scan A 406fd5a7351c
copilot-builder-as-mcp-skill is a skill published in the GitHub repository magnusfroste/flowwink (23 stars, last pushed today), licensed MIT. It adds 41 tokens to every session and 325 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 2026-09-04.
Other skills, from other repositories
glass
Dark glassmorphism design with frosted panels, backdrop blur, and vibrant mint-green/indigo accents on deep navy background.
pagible
Dark, immersive design with blue-purple gradient accents, sharp edges, and a deep navy background for a modern tech aesthetic.
journal
Editorial magazine theme with a centered masthead, serif headlines, structured story grids, and restrained ochre accents.
estate
Editorial property theme with image-led layouts, crisp typography, a restrained red accent, and clear property discovery and contact paths.
taste
Modern restaurant and hospitality design with bold food photography, rounded editorial layouts, layered midnight surfaces, vivid coral, emerald and violet accents, and no motion effects.
ui-scaffold
Scaffold a new Blazor page with proper layering — service interface, page component (markup + code-behind split), DTO, validation, error handling, and bUnit test. Enforces architecture-principles + blazor-fluent-ui conventions. Use when adding any new UI surface to a Blazor Server app.