[Bug]: Not able to add the extensions

[vamshikrishnamraju]

Bug Description

When trying to add the extension i am getting Validation error.

specify extension add verify --from https://github.com/ismaelJimenez/spec-kit-verify/archive/refs/tags/v1.0.0.zip
Warning: Installing from external URL.
Only install extensions from sources you trust.

Downloading from https://github.com/ismaelJimenez/spec-kit-verify/archive/refs/tags/v1.0.0.zip...

Validation Error: Invalid alias 'speckit.verify': must follow pattern 'speckit.{extension}.{command}'

speckit version details

CLI Version 0.5.1.dev0 │
│ Template Version 0.5.0 │
│ Released 2026-04-02 │
│ │
│ Python 3.12.6 │
│ Platform Windows │
│ Architecture AMD64 │
│ OS Version 10.0.26200 │
│

Steps to Reproduce

specify extension add verify --from https://github.com/ismaelJimenez/spec-kit-verify/archive/refs/tags/v1.0.0.zip

Expected Behavior

Expected to install the extension without any error

Actual Behavior

Validation Error: Invalid alias 'speckit.verify': must follow pattern 'speckit.{extension}.{command}'

Specify CLI Version

0.5.0

AI Agent

GitHub Copilot

Operating System

Windows

Python Version

3.12.6

Error Logs

Validation Error: Invalid alias 'speckit.verify': must follow pattern 'speckit.{extension}.{command}'

Additional Context

I tried with multiple extensions, i am getting the same error

[carlosfiori]

Same here on version 0.5.1.dev0:

[mnriem]

You'll have to ask the extension developer to adhere to the new naming scheme as extension are no longer allowed to use the /speckit prefix. Note this was done so it is clear the command is coming from an extension.