Agent skill

Apex Azure Kusto

by jonathan-vella in jonathan-vella/apex

ANALYSIS SKILL — Query and analyze data in Azure Data Explorer (Kusto/ADX) using KQL.

MITAuto-check passedData & Analytics

Install Apex Azure Kusto

skills CLI
$ npx skills add jonathan-vella/apex --skill apex-azure-kusto -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jonathan-vella/apex apex-azure-kusto --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jonathan-vella/apex.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/apex-azure-kusto .claude/skills/apex-azure-kusto && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
apex-azure-kusto
GitHub stars
217
Token cost
~984 tokens
SKILL.md length
298 words
Files
4 (incl. references)
Skills in repo
39
Repo updated
First seen
Licence
MIT

At a glance

ANALYSIS SKILL — Query and analyze data in Azure Data Explorer (Kusto/ADX) using KQL.

  • Works in 4 steps: Discover resources — list clusters and… → Explore schema — kusto_table_schema_get… → Query data — kusto_query with a KQL… → …
  • : App Insights / Log Analytics troubleshooting (apex-azure-diagnostics)
  • SKILL.md covers Prerequisites, Steps, Query Patterns Quick Reference and Rules, plus 2 more sections
  • Calls az

What it does

Apex Azure Kusto is an agent skill from jonathan-vella/apex. ANALYSIS SKILL — Query and analyze data in Azure Data Explorer (Kusto/ADX) using KQL. WHEN: "KQL queries", "Kusto database queries", "Azure Data Explorer", "ADX clusters", "time series data", "IoT telemetry", "anomaly detection". DO NOT USE FOR: App Insights / Log Analytics troubleshooting (apex-azure-diagnostics), cost analysis (apex-azure-cost-optimization).

Its SKILL.md is about 980 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `references/common-issues.md`, `references/fallback-strategy.md` and `references/query-patterns.md`).

It sits in Data & Analytics, covering Forecasting and time series, Data analysis and Anomaly detection. It works with Microsoft Azure, Microsoft Sentinel and Model Context Protocol. The repository describes itself as: APEX turns Azure platform engineering requirements into verified, deploy-ready IaC — powered by GitHub Copilot agents, real-time pricing, and built-in compliance. The licence is MIT.

When your agent uses it

  • : App Insights / Log Analytics troubleshooting (apex-azure-diagnostics)
  • Cost analysis (apex-azure-cost-optimization)

Example prompts

  • “KQL queries”
  • “Kusto database queries”
  • “Azure Data Explorer”
  • “/apex-azure-kusto”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Discover resources — list clusters and databases in the subscription
  2. Explore schema — kusto_table_schema_get for table structure
  3. Query data — kusto_query with a KQL expression
  4. Analyse results — aggregate, visualise, export

What it can do on your machine

Read from SKILL.md and the folder at commit b8e5908. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • az

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use az, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Apex Azure Kusto loads about 984 tokens when it runs, and up to ~2.6k if it reads all its reference files. Until then it costs about 96 tokens; SKILL.md has 298 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~96
When it runs · the whole SKILL.md, loaded when a task matches
~984
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jonathan-vella/apex at commit b8e5908, republished under its MIT licence (© jonathan-vella). 298 words, ~984 tokens.

Download SKILL.mdSave it as .claude/skills/apex-azure-kusto/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
apex-azure-kusto
description
**ANALYSIS SKILL** — Query and analyze data in Azure Data Explorer (Kusto/ADX) using KQL. WHEN: "KQL queries", "Kusto database queries", "Azure Data Explorer", "ADX clusters", "time series data", "IoT telemetry", "anomaly detection". DO NOT USE FOR: App Insights / Log Analytics troubleshooting (apex-azure-diagnostics), cost analysis (apex-azure-cost-optimization).
user-invocable
true
disable-model-invocation
false
argument-hint
cluster, database and query goal
license
MIT
metadata.author
Microsoft
metadata.version
1.0.1

Azure Data Explorer (Kusto) Query & Analytics

Execute KQL queries against Azure Data Explorer for fast, scalable big-data analytics on log, telemetry, and time-series data.

Prerequisites

  • Azure CLI authenticated (az login) with a subscription containing Kusto resources
  • RBAC: AllDatabasesViewer on the cluster, or Database Viewer per database
  • Azure MCP server configured in .vscode/mcp.json for the mcp_azure-mcp_kusto namespace; CLI fallback in references/fallback-strategy.md

Steps

  1. Discover resources — list clusters and databases in the subscription
  2. Explore schema — kusto_table_schema_get for table structure
  3. Query data — kusto_query with a KQL expression
  4. Analyse results — aggregate, visualise, export

Query Patterns Quick Reference

PatternUse For
Basic Data RetrievalQuick inspection, recent events
Aggregation AnalysisCounting, distribution, top-N
Time Series AnalyticsPerformance monitoring, trends
Join and CorrelationRoot-cause analysis, event tracing
Schema DiscoveryData model exploration

For full KQL syntax, examples, best practices, and performance tips, read references/query-patterns.md.

Rules

  • Always bound time-series scans with start/end timestamps, including both join inputs
  • Use take/limit for exploratory queries
  • Filter early (where before join / summarize)
  • Use summarize for aggregations; bin() for time bucketing
  • Use project to select only needed columns

MCP Tools

These names are capability hints, not proof of installation. Inspect available tools and their current schemas before use; do not invent a missing tool or silently substitute ARG/Monitor for ADX execution.

ToolPurpose
kusto_cluster_listList Kusto clusters in a subscription
kusto_database_listList databases in a cluster
kusto_queryExecute KQL against a database
kusto_table_schema_getRetrieve table schema

Required parameters: subscription, cluster, database, query (or table). Optional: resource-group, tenant.

For CLI fallback (timeouts, auth failures), read references/fallback-strategy.md. For access, timeout, empty-result and ingestion problems, read references/common-issues.md.

Reference Index

ReferenceWhen to Load
references/query-patterns.mdKQL patterns, examples, best practices, common functions
references/fallback-strategy.mdCLI commands and REST API fallback when MCP tools fail
references/common-issues.mdAccess, timeout, syntax, empty-result and ingestion issues

© jonathan-vella, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (references) in .github/skills/apex-azure-kusto of jonathan-vella/apex.

  • SKILL.md
  • references/common-issues.md
  • references/fallback-strategy.md
  • references/query-patterns.md

Open the folder on GitHubat commit b8e5908

Compare with similar skills

Apex Azure Kusto next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Apex Azure Kusto compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Apex Azure Kusto this skilljonathan-vella/apex217—~984Automated safety check: PassMIT
Kqlmicrosoft/fabric-rti-mcp131—~6.2kAutomated safety check: PassMIT
Azure Kustomicrosoft/GitHub-Copilot-for-Azure2551 repos~2.1kAutomated safety check: PassMIT
Kqlmicrosoft/skills3.1k—~4.7kAutomated safety check: PassMIT
Kql Query AuthoringSCStelz/security-investigator249—~5.7kAutomated safety check: PassMIT
Azure AI Anomalydetector Javamicrosoft/skills3.1k5 repos~2.3kAutomated safety check: PassMIT

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Questions about Apex Azure Kusto

What does Apex Azure Kusto do?

ANALYSIS SKILL — Query and analyze data in Azure Data Explorer (Kusto/ADX) using KQL. Apex Azure Kusto is an agent skill from jonathan-vella/apex. ANALYSIS SKILL — Query and analyze data in Azure Data Explorer (Kusto/ADX) using KQL.

When should I use Apex Azure Kusto?

Apex Azure Kusto fits situations like: : App Insights / Log Analytics troubleshooting (apex-azure-diagnostics); cost analysis (apex-azure-cost-optimization).

How do I install Apex Azure Kusto in Claude Code?

Run `npx skills add jonathan-vella/apex --skill apex-azure-kusto -a claude-code`. Or copy the skill folder (.github/skills/apex-azure-kusto in jonathan-vella/apex) into .claude/skills/apex-azure-kusto in your project. Claude Code loads it when a task matches its description.

How do I install Apex Azure Kusto in Codex?

Run `npx skills add jonathan-vella/apex --skill apex-azure-kusto -a codex`. Or copy the skill folder (.github/skills/apex-azure-kusto in jonathan-vella/apex) into .agents/skills/apex-azure-kusto in your project. Codex loads it when a task matches its description.

Can I use Apex Azure Kusto in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jonathan-vella/apex --skill apex-azure-kusto -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/apex-azure-kusto, .gemini/skills/apex-azure-kusto, .github/skills/apex-azure-kusto and .opencode/skills/apex-azure-kusto in your project.

What does Apex Azure Kusto need to run?

Going by SKILL.md and its folder, Apex Azure Kusto needs the command-line tools its instructions call (az).

Does Apex Azure Kusto access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Apex Azure Kusto safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Apex Azure Kusto use?

Apex Azure Kusto is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Apex Azure Kusto use?

About 984 tokens (SKILL.md is roughly 3.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.6k tokens, read only when the agent opens those files.

What are the alternatives to Apex Azure Kusto?

Skills that share tags, products or a category with Apex Azure Kusto: Kql (microsoft/fabric-rti-mcp, 131 stars), Azure Kusto (microsoft/GitHub-Copilot-for-Azure, 255 stars), Kql (microsoft/skills, 3.1k stars) and Kql Query Authoring (SCStelz/security-investigator, 249 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Apex Azure Kusto?

jonathan-vella (a GitHub user) maintains it in jonathan-vella/apex, which has 217 GitHub stars. The repository holds 39 skills in this directory. The repository was last updated on October 10, 2026.

Source: jonathan-vella/apex on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.