npm error 404 '@universal-robots/urcap-utils@2.0.2' is not in this registry

[robot-ranger]

npm install fails to install the latest samples in the latest psX:

root@36bfb6cabe8b:/workspaces/PolyScopeX_URCap_SDK/samples/simple-rest# npm install
npm error code E404
npm error 404 Not Found - GET https://registry.npmjs.org/@universal-robots%2furcap-utils - Not found
npm error 404
npm error 404  '@universal-robots/urcap-utils@2.0.2' is not in this registry.
npm error 404
npm error 404 Note that you can also install from a
npm error 404 tarball, folder, http url, or git url.
npm error A complete log of this run can be found in: /root/.npm/_logs/2026-03-30T16_23_46_304Z-debug-0.log

FWIW npmjs.org/@universal-robots 404s in my browser

1. clone repo
2. open devcontainer in vscode
3. ./run-simulator works fine - i can load sim in the browser
4. cd samples/simple-rest && npm install
5. get error above

running this on Ubuntu 24.04 x86

[EbbeFuglsang]

Hi @robot-ranger,

Are you running it from the devcontainer? In the startup process for the container, the registry for @universal-robots should be set.
You can verify with npm config get @universal-robots:registry then you should see an output like this:

dev@codespaces-816fe7:/workspaces/PolyScopeX_URCap_SDK/samples/simple-rest$ npm config get @universal-robots:registry
https://pkgs.dev.azure.com/polyscopex/api/_packaging/polyscopex/npm/registry/

[robot-ranger]

i am ya. several months ago i had this working and at the time, i had all kinds of permissions problems so i had been running the devcontainer as root. this time, removing my edits "remoteUser":"root" started the container as dev and now i can npm install and npm run build successfully.

...but i cant seem to install any urcapx. my memory is fuzzy but this is familiar and i wonder if this is how/why i ended up running the devcontainer as root:
cd samples/simple-rest && npm install
npm run build

dev@f29900536b19:/workspaces/PolyScopeX_URCap_SDK/samples/simple-rest$ npm run install-urcap

> simple-rest@0.0.0 install-urcap
> install-urcap 'target/simple-rest*.urcapx' '../../manifest-spec-19.9.9.json'

Failed installing urcap:
        Message: Unable to install URCap
        Details: Forbidden - Operation Not Allowed

[EbbeFuglsang]

From SDK for PolyScope 10.12 the URCaps are deployed via the Robot API. And the Robot API have the requirement that the robot needs to be in "external control" before you can remote deploy a URCap.

If you are working with the URSim. The 10.13 URSim is having a Development Mode(default)
Added functionality
So you can either switch to the 10.13 SDK+URSim, or put the URSim in to remote control.