Prefab MCP server

Read from the package source without running it. The installed server may list more.

• apply_rules_to_folderwrite action

  Run a watched folder's rules over the files sitting in it now. With dryRun, reports what

• create_templatewrite action

  Add a new template to the library. Describe the folders and files as a tree; a node with

• delete_global_placeholderwrite action

  Templates that reference the key will deploy it literally again unless they define it.

• delete_templatewrite action

  Remove a template from the library. Starter templates cannot be deleted.

• delete_value_presetwrite action

  A paused folder keeps its rules but stops acting on files that arrive.

• deploy_templatewrite action

  Create a template's folders and files inside a destination folder, filling in the values

• describe_template

  The full structure of one template: every folder and file it creates, the placeholders it

• duplicate_template

  Copy a template. The usual way to build on a starter template, which cannot be edited in place.

• export_templateswrite action

  Write one or more templates to a .prefab file that can be opened on another Mac. Templates

• import_archive

  Add the templates in a .prefab file to this library.

• import_folder

  Turn a project folder that already exists into a template. "contents" keeps the files and

• list_globals

  Library-wide placeholders, actions and saved value presets - the things defined once and

• list_templates

  Every template in the user's Prefab library: what it is called, what it creates, and the

• list_watched_folders

  Folders Prefab is watching, and the rules that run on files landing in them. Explains why a

• pause_watched_folder

  A paused folder keeps its rules but stops acting on files that arrive.

• preview_deploywrite action

  What deploying a template into a folder would create, with the given values filled in.

• request_folder_access

  Prefab is sandboxed and can only work in folders the user has pointed it at. This puts the

• set_global_placeholder

  A placeholder available to every template that writes {{key}} without defining it itself.

• set_value_preset

  A named set of answers - "Acme", "Northern Stage" - that fills a deploy prompt in one go.

• stop_watching_folder

  Forget the folder and its rules. The folder and its files are left alone.

• undo_watched_folder_runwrite action

  Put back what a watched folder last changed. Files converted without keeping the original,

• update_templatewrite action

  Change an existing template: its name, description, icon, structure or placeholders.

• Code scan5 source files scanned25/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitylocal package, no credentials required12/15
• Maintenancelast push 67 days ago12/15
• Maintainer identitynamespace and repository owner differ; GitHub account older than a year5/10

Safety score

83/100

higher than 65% of 1,119 Developer tools servers

Tools

22

the typical Developer tools server has 7

Tools that change things

45%

typical: 5%. Fewer write tools means less an agent can break

GitHub stars

2

more than 65% of 855 Developer tools servers

Downloads a week

35

more than 20% of 436 Developer tools servers with a package

Grade history

• 2026-10-31downgradeA → Bscore 83

Prefab: common questions

Is Prefab MCP server safe?

Mostly: it is graded B (83/100). Read the Prefab safety report

How do I install Prefab?

It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.

Does Prefab need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is Prefab maintained?

The last commit was 71 days ago (2026-08-25). The latest release is v0.1.1.

What can I use instead of Prefab?

Servers from other publishers that do the same job: Dockhold MCP server, GitLab MCP Server and Agent Harnesses MCP server.

How does Prefab compare with other Developer tools MCP servers?

safety score 83/100 (higher than 65% of 1,119 Developer tools servers); tools 22 (the typical Developer tools server has 7); tools that change things 45% (typical: 5%. Fewer write tools means less an agent can break). Full comparison.