Microfrontends Agent Skill

Guide for building, configuring, and deploying microfrontends on Vercel. Use this skill when the user mentions microfrontends, multi-zones, splitting an app across teams, independent deployments, cross-app routing, incremental migration, composing multiple frontends under one domain, microfrontends.json, @vercel/microfrontends, the microfrontends local proxy, or path-based routing between Vercel projects. Also use when the user asks about shared layouts across projects, navigation between microfrontends, fallback environments, asset prefixes, or feature flag controlled routing.

11k tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

240

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/vercel/vercel-plugin --skill microfrontends

What comes with it

39 270 bytes besides the instruction

references/configuration.md

references/local-development.md

references/managing-microfrontends.md

references/path-routing.md

references/security.md

references/troubleshooting.md

The instruction itself

2 sections, as written by the author

Vercel Microfrontends

Split a large application into independently deployable units that render as one cohesive app. Vercel handles routing on its global network using microfrontends.json.

Core concepts: default app (has microfrontends.json, serves unmatched requests) · child apps (have routing path patterns) · asset prefix (prevents static-asset collisions) · independent deployments.

Frameworks: Next.js (App Router + Pages Router), SvelteKit, React Router, Vite — all via @vercel/microfrontends.

CLI (vercel microfrontends / vercel mf):

create-group — create a new group; interactive by default, or fully non-interactive with --non-interactive (options: --name, --project (repeatable), --default-app, --default-route, --project-default-route (repeatable, format: <project>=<route>, required for each non-default project in non-interactive mode), --yes to skip confirmation prompt); note: --non-interactive is blocked if adding the projects would exceed the free tier limit — the user must confirm billing changes interactively
add-to-group — add the current project to an existing group; requires interactive terminal (options: --group, --default-route)
remove-from-group — remove the current project from its group; requires interactive terminal (option: --yes skips project-link prompt only)
delete-group — delete a group and all its settings, irreversible; requires interactive terminal (option: --group to pre-select group)
inspect-group — retrieve group metadata (project names, frameworks, git repos, root dirs); useful for automating setup (options: --group, --format=json, --config-file-name)
pull — pull remote microfrontends.json for local development (option: --dpl)
microfrontends proxy — local dev proxy · microfrontends port — print auto-assigned port

Finding Detailed Information

This skill includes detailed reference docs in the references/ directory. Do not read all references upfront. Instead, search or grep the relevant file when the user asks about a specific topic:

| Topic | Reference file |

|---|---|

| Getting started, quickstart, framework setup, microfrontends.json schema, fields, naming, examples | references/configuration.md |

| Path expressions, asset prefixes, flag-controlled routing, middleware | references/path-routing.md |

| Local proxy setup, polyrepo config, Turborepo, ports, deployment protection | references/local-development.md |

| Inspecting groups (inspect-group), adding/removing projects, fallback environments, navigation, observability | references/managing-microfrontends.md |

| Testing utilities (validateMiddlewareConfig, validateRouting, etc.), debug headers, common issues | references/troubleshooting.md |

| Deployment protection, Vercel Firewall, WAF rules for microfrontends | references/security.md |

When the user asks about a specific topic, use grep or search over the relevant reference file to find the answer without loading all references into context.

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How to use it

Copy the folder

Take vercel/microfrontends from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.