[milestone-changelog] [13.3] Change log

[github-actions]

Last updated: 2026-04-25 11:09 UTC
PRs analyzed through: 2026-04-25T11:09:08Z

Table of Contents

• 🚧 AppHost
• ⌨️ CLI
• 📊 Dashboard

What's New

• 2026-4-23 — 🚧 App Host - 🔗 BeforeStart Pipeline Steps
• 2026-4-23 — 🚧 App Host - 🔓 Privileged Container Support in Docker Compose
• 2026-4-22 — 🚧 App Host - 🧰 Alternative TypeScript AppHost Toolchains
• 2026-4-22 — 🚧 App Host - 🌐 Browser Logs and Network Capture
• 2026-4-22 — 🚧 App Host - 🌍 Docker Compose Polyglot APIs
• 2026-4-22 — ⌨️ CLI - 🤖 Non-Interactive CLI Mode
• 2026-4-21 — 📊 Dashboard - 🔐 Dashboard Telemetry API with Authentication

🚧 AppHost

5 new features, 2 improvements, 1 bug fix

App Host new features

• 🧰 Alternative TypeScript AppHost Toolchains (a id="alternative-typescript-apphost-toolchains")(/a)
  TypeScript AppHosts now support Bun, Yarn, and pnpm as alternatives to npm/npx. The CLI auto-detects the active toolchain from project metadata and adjusts install, run, and watch behavior accordingly.
  Changes: Support alternative TypeScript AppHost toolchains #16162
  📝 Documentation required

• 🔗 BeforeStart Pipeline Steps (a id="beforestart-pipeline-steps")(/a)
  New BeforeStart pipeline step support enables ordered execution of BeforeStartEvent subscriptions. This resolves race conditions in complex scenarios such as adding role assignments before the AzureResourcePreparer runs.
  Changes: Add support for BeforeStart Pipeline steps #13780
  📝 Documentation required

• 🌐 Browser Logs and Network Capture (a id="browser-logs-and-network-capture")(/a)
  New WithBrowserLogs(...) API in Aspire.Hosting attaches a child resource to endpoint-capable resources that launches a tracked Chromium browser and streams browser console logs and network activity into Aspire's resource log stream.
  Changes: Add tracked browser logs and network capture #16310
  📝 Documentation required

• 🌍 Docker Compose Polyglot APIs (a id="docker-compose-polyglot-apis")(/a)
  TypeScript, Python, and Java AppHosts now have access to the full Docker Compose customization API surface, including ConfigureComposeFile(...) and GetHostAddressExpression(...), previously only available from C# AppHosts.
  Changes: Expose missing Docker Compose polyglot APIs #16364
  📝 Documentation required

• 🔓 Privileged Container Support in Docker Compose (a id="privileged-container-support-in-docker-compose")(/a)
  Docker Compose publishing now supports the privileged: true flag for containers that require elevated OS privileges, enabling scenarios such as accessing hardware devices from containerized services.
  Changes: Add 'privileged' flag for docker-compose publishing #16075
  📝 Documentation required

App Host improvements

• 🍎 macOS Dev Certificate Pre-Export (a id="macos-dev-certificate-pre-export")(/a)
  On macOS, the developer certificate is now pre-exported to the Aspire cache when created or trusted, eliminating repeated Keychain access prompts when running Aspire applications locally.
  Changes: Pre-export dev certificate to Aspire cache to avoid macOS keychain prompts #16282

• 🔍 TryGetByName for Resource Lookup (a id="trygetbyname-for-resource-lookup")(/a)
  Added TryGetByName<T>() as a default interface method on IResourceCollection with a dictionary-backed O(1) implementation, replacing verbose O(n) SingleOrDefault patterns scattered across the codebase.
  Changes: Add TryGetByName to IResourceCollection #16389
  📝 Documentation required

App Host bug fixes

• 📡 Fix OTLP Endpoint in Isolated Mode (a id="fix-otlp-endpoint-in-isolated-mode")(/a)
  Fixed OTLP endpoint resolution when running with aspire start --isolated (randomized ports). Telemetry data is now correctly routed to the dashboard when DCP assigns dynamic port numbers.
  Changes: Fix OTLP endpoint resolution in isolated mode #16367

⌨️ CLI

1 new feature, 2 improvements, 3 bug fixes

CLI new features

• 🤖 Non-Interactive CLI Mode (a id="non-interactive-cli-mode")(/a)
  New PromptBinding infrastructure in IInteractionService allows CLI commands to resolve prompts directly from flags instead of asking the user interactively. This enables reliable use of aspire commands in scripts and automation pipelines.
  Changes: Add PromptBinding infrastructure for non-interactive CLI mode #16235
  📝 Documentation required

CLI improvements

• 🔷 F# and VB Support in aspire update (a id="f-and-vb-support-in-aspire-update")(/a)
  aspire update now upgrades F# (.fsproj) and VB (.vbproj) AppHost projects in addition to C# (.csproj), removing a gap that left non-C# projects unable to use the update command.
  Changes: Support upgrading F# and VB projects #15799

• 📖 Richer Markdown Docs Rendering (a id="richer-markdown-docs-rendering")(/a)
  The aspire docs command now uses the Markdig library for Markdown rendering, supporting a wider range of formatting elements in documentation output.
  Changes: Use Markdig for Aspire CLI docs rendering #16342

CLI bug fixes

• 🔌 Fix aspire describe Follow Mode Disconnects (a id="fix-aspire-describe-follow-mode-disconnects")(/a)
  aspire describe --follow now handles graceful disconnects when the AppHost stops or restarts, rather than crashing or hanging indefinitely.
  Changes: Handle describe --follow disconnects #16271

• 🛑 Fix aspire stop Container Cleanup (a id="fix-aspire-stop-container-cleanup")(/a)
  aspire stop now correctly terminates all application containers. Previously it killed the entire CLI process tree including DCP, preventing DCP from completing its own container cleanup.
  Changes: Fix issue 15806 ("aspire stop" is not cleaning up application containers) #16006

• 🔢 Fix Redundant Version Prompt in aspire add (a id="fix-redundant-version-prompt-in-aspire-add")(/a)
  When --version is supplied to aspire add, the CLI no longer prompts interactively for the version. The specified version is used directly if found in any available package channel.
  Changes: don't prompt for version when --version was supplied #15527

📊 Dashboard

1 new feature, 2 improvements, 1 bug fix

Dashboard new features

• 🔐 Dashboard Telemetry API with Authentication (a id="dashboard-telemetry-api-with-authentication")(/a)
  The dashboard's OTLP ingestion API is now enabled by default with API key authentication and automatic login token exchange, significantly improving the standalone aspire otel experience without requiring manual configuration.
  Changes: Enable dashboard telemetry API by default with ApiKey auth and login token exchange #16326
  📝 Documentation required

Dashboard improvements

• 📋 Parameters Page Improvements (a id="parameters-page-improvements")(/a)
  The dashboard's Parameters page now includes clickable "set value" links for unset parameters, warning badges highlighting required parameters, and the ability to filter parameters by resource name.
  Changes: Dashboard: Parameters page follow-ups - clickable set value, warning badge, filter by resource #16117

• 💬 Interactive State Column Popover (a id="interactive-state-column-popover")(/a)
  The resource state column in the dashboard now shows an interactive popover with clickable links instead of a plain tooltip, making error details and related documentation directly accessible.
  Changes: Dashboard: Add InfoPopover for state column with clickable links #15996

Dashboard bug fixes

• 📊 Fix OTLP Histogram Metrics Parsing (a id="fix-otlp-histogram-metrics-parsing")(/a)
  Fixed deserialization of OTLP histogram metrics from exporters that send bucketCounts as JSON numbers instead of strings (e.g., VS Code Copilot Chat). These metrics are now correctly parsed and displayed.
  Changes: Fix OTLP JSON deserialization of numeric histogram bucketCounts #16376

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