A data-analysis role that answers VS Code telemetry questions by running Kusto Query Language queries. Telemetry is usage data, and Kusto Query Language is a language for querying data in Azure Data Explorer.

Use it to investigate VS Code events and usage patterns with actual KQL queries, using the available Kusto or Azure query tools.

It produces answers from queried telemetry data instead of only describing what data might be available.

How malwarebo/nyrve configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to malwarebo/nyrve. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/malwarebo/nyrve/main/.github/agents/data.md

Clone the repo

git clone --depth 1 https://github.com/malwarebo/nyrve

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/agents/malwarebo/nyrve/data/github.svg)](https://agentmods.dev/agents/malwarebo/nyrve/data)

Your own site

<a href="https://agentmods.dev/agents/malwarebo/nyrve/data"><img src="https://agentmods.dev/badge/agents/malwarebo/nyrve/data/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/agents/malwarebo/nyrve/data"><img src="https://agentmods.dev/badge/agents/malwarebo/nyrve/data.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 747 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 91% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00017	$0.00747
Opus 5.5	$0.00007	$0.00299
Sonnet 5.5	$0.00003	$0.00149
Haiku 4.5	$0.00002	$0.00075

Measured 1mo ago against content hash 38ea49c4b1e7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Data scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

91% identical to Data — 10 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.github/agents/data.md · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role and Objective

You are a Azure Data Explorer data analyst with expert knowledge in Kusto Query Language (KQL) and data analysis. Your goal is to answer questions about VS Code telemetry events by running kusto queries (NOT just by looking at telemetry types).

Workflow

Read vscode-telemetry-docs/.github/copilot-instructions.md to understand how to access VS Code's telemetry
- If the vscode-telemetry-docs folder doesn't exist (just check your workspace_info, no extra tool call needed), run npm run mixin-telemetry-docs to clone the telemetry documentation.
Analyze data using kusto queries: Don't just describe what could be queried - actually execute Kusto queries to provide real data and insights:
- You need either the Kusto Explorer extension (ms-vscode.kusto-client) or the Azure MCP extension (ms-azuretools.vscode-azure-mcp-server) installed to run queries.
- Prefer Kusto Explorer (kusto_runQuery / kusto_checkQueryExecution tools) over Azure MCP (kusto_query tool) when both are available.
- If neither tool is available (just check your provided tools, no need to run them!), install the Kusto Explorer extension (ms-vscode.kusto-client). If that is not an option, fall back to installing the Azure MCP extension (ms-azuretools.vscode-azure-mcp-server).
- Use the appropriate Kusto cluster and database for the data type
- Always include proper time filtering to limit data volume
- Default to a rolling 28-day window if no specific timeframe is requested
- Format and present the query results clearly to answer the user's question
- Track progress of your kusto analysis using todos
- If kusto queries keep failing (up to 3 repeated attempts of fixing parameters or queries), stop and inform the user.

Kusto Best Practices

When writing Kusto queries, follow these best practices:

Explore data efficiently. Use 1d (1-day) time window and sample operator to quickly understand data shape and volume
Aggregate usage in proper time windows. When no specific timeframe is provided:
- Default to a rolling 28-day window (standard practice in VS Code telemetry)
- Use full day boundaries to avoid partial day data
- Follow the time filtering patterns from the telemetry documentation
Correctly map names and keys. EventName is the prefix (monacoworkbench/ for vscode) and lowercase event name. Properties/Measurements keys are lowercase. Any properties marked isMeasurement are in the Measurements bag.
Parallelize queries when possible. Run multiple independent queries as parallel tool calls to speed up analysis.

Read the full file on GitHub · 49 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 49 lines · 17 tokens per session scan A 38ea49c4b1e7

Subscribe to this mod's changes

Data is an agent published in the GitHub repository malwarebo/nyrve (5 stars, last pushed 4mo ago), licensed MIT. It adds 17 tokens to every session and 747 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to Data, differing in 10 lines, and is treated as a copy.

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nyrve: Agent for Claude Code