Ng command ran from angular/cli MCP server is failing on windows.
@amishne is already working on this.
Since Feb 4, 2026.
Assessment
This issue has not been assessed yet.
Description
Command
version
Is this a regression?
- Yes, this behavior used to work in the previous version
The previous version in which this bug was not present was
No response
Description
I am just reporting a bug I experienced on windows when trying the new experimental tools of the angular/cli mcp server.
On the latest angular/cli 21.1.2 when using the mcp server with experimental tools like modernize or build the mcp server fails to run the "ng" command on windows.
I don't experience any issues on linux systems.
The ng command is working fine in cmd or powershell with local or global angular/cli installation.
I asked my AI agent for feedback on the actual error and i got this :
{
"status": "failure",
"logs": [
"Process failed with error: spawn ng ENOENT"
]
}
It seems to be related to the spawn method not working properly on windows when shell option is set to false.
I hope it helps.
Minimal Reproduction
Use experimental tools with the angular/cli mcp server that involves the ng command with spawn (like modernize or build) on windows.
Exception or Error
{
"status": "failure",
"logs": [
"Process failed with error: spawn ng ENOENT"
]
}
Your Environment
Angular CLI : 21.1.2
Node.js : 24.12.0
Package Manager : npm 11.6.2
Operating System : win32 x64
Anything else relevant?
No response
- Dominant language
- TypeScript
- Stars
- 27k
- Forks
- 11.8k
- Avg merge
- 16h 35m
- Merged PRs (30d)
- 176
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
More from angular/angular-cli
-
area: @angular/build gemini-triaged
Difficulty 2/5 1-3 hours Newbie friendliness 74/100
angular/angular-cli#33955 ·
-
area: @angular/cli gemini-triaged
Difficulty 2/5 1-3 hours Newbie friendliness 72/100
angular/angular-cli#33055 · 1 comment · 3 reactions ·
-
area: @angular/build gemini-triaged
Difficulty 4/5 3-5 days Newbie friendliness 72/100
angular/angular-cli#34137 ·
-
angular/build:library area: @angular/build gemini-triaged
angular/angular-cli#34131 · 1 assignee ·
-
angular/build:library area: @angular/build gemini-triaged
angular/angular-cli#34130 · 1 assignee ·
All issues in angular/angular-cli
Similar issues
-
Browser Waiting for: Product Owner
Difficulty 2/5 1-3 hours Newbie friendliness 85/100
getsentry/sentry-javascript#24577 · 1 comment ·
-
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
agilepathway/label-checker#640 ·
-
Difficulty 2/5 1-3 hours Newbie friendliness 84/100
copse-dev/agent-pane#2953 ·
-
agentic-workflows
Difficulty 1/5 Under an hour Newbie friendliness 85/100
githubnext/rig#534 ·
-
automation missing-model model-sync provider:pioneer
Difficulty 2/5 1-3 hours Newbie friendliness 76/100
anomalyco/models.dev#7701 ·