Antideploy

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ERROR: No buildpack groups passed detection How to fix it.

The builder could not tell what your project is. There is usually no package.json, requirements.txt, go.mod, Gemfile or pom.xml at the root of what was sent.

How the Agent API works
What you see
ERROR: No buildpack groups passed detection.
ERROR: failed to detect: no buildpacks participating
  • What it meansThe language was not detected
  • Usual causeThe project sits in a subfolder
  • Fix oneSend the right folder
  • Fix twoSet the root folder

What it means

Before it builds, the builder looks for a file that names your language: package.json for Node.js, requirements.txt or pyproject.toml for Python, go.mod for Go, Gemfile for Ruby, pom.xml or build.gradle for Java. It found none at the root of what was sent, so it cannot choose how to build.

How to fix it

  1. Check what you sent

    Is the project inside another folder? A common cause is sending the parent folder, so package.json sits one level down.

  2. Send the right folder, or set the root folder

    Deploy from the folder that holds the manifest. If your repository holds several projects, choose the folder to build, and Antideploy builds it as if it were the whole project.

  3. Or add a Dockerfile

    A Dockerfile at the root tells the builder how to build any project. See how to deploy with your own Dockerfile.

01Questions

Detection questions, answered.

Anything else? Write to us and a person answers.

support@antideploy.com
Does Antideploy support monorepos?

It deploys one app at a time from a repository. A repository that holds several apps needs the folder to build chosen.

What about a project that only has HTML files?

That is a static site. An index.html is enough, and Antideploy serves it.

Does this failed deploy cost anything?

No. Failed deploys never count against your plan.

+Keep reading

More guides, and the platform.

Each platform page covers one part of Antideploy: what it does, where it stops and the questions people ask. See the whole platform, or all the guides.

Facts on this page were checked against the live platform on 7 October 2026.

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