[release/13.4] Filter resources with resource.excludeFromMcp from CLI MCP tools

[aspire-repo-bot]

Backport of #18106 to release/13.4

/cc @JamesNK

Customer Impact

ExcludeFromMcp() no longer works. A customer would use it with a resource and expect the resource to be excluded from MCP calls. However the annotation doesn't work. The resource data is available from MCP and its tools are callable from MCP.

Testing

Unit tests, end-to-end tests

Risk

Low

Regression?

Yes, introduced in 13.2 #14337

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[github-actions]

🚀 Dogfood this PR with:

⚠️ WARNING: Do not do this without first carefully reviewing the code of this PR to satisfy yourself it is safe.

curl -fsSL https://raw.githubusercontent.com/microsoft/aspire/main/eng/scripts/get-aspire-cli-pr.sh | bash -s -- 18150

Or

• Run remotely in PowerShell:

iex "& { $(irm https://raw.githubusercontent.com/microsoft/aspire/main/eng/scripts/get-aspire-cli-pr.ps1) } 18150"

[github-actions]

Re-running the failed jobs in the CI workflow for this pull request because 1 job was identified as retry-safe transient failures in the CI run attempt.
GitHub was asked to rerun all failed jobs for that attempt, and the rerun is being tracked in the rerun attempt.
The job links below point to the failed attempt jobs that matched the retry-safe transient failure rules.

• Tests / Hosting-1 / Hosting-1 (windows-latest) - Job-level runner or infrastructure failure matched the transient allowlist.

[github-actions]

❓ CLI E2E Tests unknown — 112 passed, 0 failed, 2 unknown (commit d46acb1)

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_{📹 Recordings uploaded automatically from CI run #27402121786}

[aspire-repo-bot]

✅ No documentation update needed.

Decision path: docs_required → already documented by name

Triggered signals (2): cli_command_file_changed, mcp_tool_file_changed.

This PR is a backport of #18106 to release/13.4, fixing a regression (introduced in 13.2) where resources annotated with ExcludeFromMcp() were not being filtered from MCP tool results. No new flags, options, APIs, or tools were added — the fix restores already-documented behavior.

Per-signal documentation evidence (all in src/frontend/src/content/docs/get-started/aspire-mcp-server.mdx):

• cli_command_file_changed (AgentMcpCommand.cs): The "Exclude resources from MCP" section already states: "By default, all resources, console logs, and telemetry are accessible through the MCP server. You can exclude specific resources and their associated telemetry by annotating them with ExcludeFromMcp():" (line 126). The method ExcludeFromMcp() appears verbatim in code examples at lines 134 and 151, and in the Enterprise considerations list at line 209.

• mcp_tool_file_changed (ListResourcesTool.cs, ListConsoleLogsTool.cs, ExecuteResourceCommandTool.cs, ListStructuredLogsTool.cs, ListTracesTool.cs, ListTraceStructuredLogsTool.cs, McpToolHelpers.cs): All modified tools are listed by name in the Tools table: list_resources (line 108), list_console_logs (line 109), list_structured_logs (line 110), list_traces (line 111), list_trace_structured_logs (line 112), execute_resource_command (line 113). The filtering behavior for excluded resources is described in the same "Exclude resources from MCP" section.