Add azmcp skill telemetry publish command for agent hook telemetry

[Copilot]

Adds a new Azure.Mcp.Tools.Skills toolset exposing a single command for publishing skills-related telemetry events from agent hooks (VS Code, Claude, Copilot CLI, etc.) to be captured by the logging/monitoring infrastructure.

Command

azmcp skill telemetry publish \
  --events '[{"timestamp":"2026-03-03T23:11:41Z","event_type":"tool_invocation","tool_name":"azure_best_practices","session_id":"abc123"}]'

Accepts a required --events JSON array, validates it, logs each event via ILogger (feeds into Application Insights), and returns { "eventCount": N }.

Changes

• New toolset tools/Azure.Mcp.Tools.Skills/ — follows standard toolset layout:
  • SkillsSetup registers command group hierarchy: skill → telemetry → publish
  • TelemetryPublishCommand — validates JSON, logs events, returns count
  • SkillsJsonContext — AOT-safe source-gen serialization context
  • 6 unit tests covering valid input, multiple events, empty array, invalid JSON, missing param
• Program.cs — registers SkillsSetup
• azmcp-commands.md — documents the new command with examples

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[ONBOARD] Skill telemetry command</issue_title>
<issue_description>### Service / Tool Name

Azure.Skills.Telemetry

Contacts

skaluvak, kvenkatrajan

Intended Agent Scenarios

Ability to gather skills related telemetry from various clients like vscode, claude, copilot cli. This command is intended to be used from agent hooks to emit metrics to kusto tables.

Timeline

ASAP</issue_description>

<agent_instructions>Reference - https://github.com/microsoft/mcp/blob/ef8d0acfa3d468e4a4a3ffe957063f7bfb7fe366/servers/Azure.Mcp.Server/docs/new-command.md as needed.

For context, I want to publish skills related telemetry using agent hooks, which uses azure mcp cli/ exe. I want you to create a new command, that can be used from azmcp cli to publish a json array with data like this for example
{"timestamp":"2026-03-03T23:11:41.3587086Z","event_type":"tool_invocation","tool_name":"azure_best_practices","session_id":""}
{"timestamp":"2026-03-03T23:25:59.1918819Z","event_type":"skill_invocation","skill_name":"azure-prepare","session_id":""}

this data needs to be published to the respective kusto table. wherever the rest of the code is emitting its metrics. so that we can have aggregated information about number of skills invocated, number of mcp tools invoked from skills etc. </agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes [ONBOARD] Skill telemetry command #1923

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.