microsoft / microsoft/foundry-dev-tools

Microsoft Foundry: Deploy Hosted Agent command is giving error "cannot create a new Capability Host with name" on VS code AI Toolkit

Open
#376 4 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

needs attention
Dominant language
JavaScript
Stars
2.1k
Forks
260
Avg merge
42m
Merged PRs (30d)
29

Description

Does this occur consistently? Yes
Repro steps:

Create an hosted agent(single agent) using Microsoft Foundry: Create new Hosted Agent command on VS code
Deploy agent to foundry using Microsoft Foundry: Deploy Hosted Agent command
Action: deploy-hosted-agent
Error type: 500
Error Message: 500: There is an existing Capability Host with name: agents, provisioning state: Succeeded for workspace: 95d97546-f67e-4555-8f77-8d2cead802c0/msfoundry-poc/roshfoundry@AML/accountcaphost, cannot create a new Capability Host with name: accountcaphost for the same ClientId.

Version: 0.18.0
OS: win32
OS Arch: x64
OS Release: 10.0.26100
Product: Visual Studio Code
Product Version: 1.109.4
Language: en
UTC time: Wed, 08 Apr 2026 05:07:13 GMT

Call stack:
AIFServiceClientV2.handleResponse extension.js:164885:19
AIFServiceClientV2.createCapabilityHost extension.js:164936:21
async ProjectService.createCapabilityHostWithRetry extension.js:184793:24
async ProjectService.tryCreateCapabilityHost extension.js:184758:24
async AgentLifecycleHelper.handleCapabilityHostCreation extension.js:181077:32
async AgentLifecycleHelper.ensureCapabilityHostReady extension.js:181056:16
extension.js:181094:27extension.js:181094:27

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the deployment from the listed Microsoft Foundry commands and inspect the named AIFServiceClientV2 and ProjectService capability-host flow in extension.js. Check how an existing Capability Host is handled during ensureCapabilityHostReady; done means deploying the hosted agent completes without the 500 error or duplicate-host failure.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
cloud
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.