---
id: post/waldo-be/318461
type: post
title: BC Telemetry Buddy  – When Your 12-Year-Old Accidentally Helps You Find a Problem
summary: BC Telemetry Buddy is an MCP-based VS Code tool that lets you question Business Central telemetry in natural language instead of writing KQL. A casual demo question exposed a customer whose background queue codeunit ran slow full table scans on an unindexed queue table that lacked a retention policy. Diagnosis took about 15 minutes, and enabling retention plus adding an index removed the waste.
tier: community
language: en
tags:
  - telemetry
  - performance troubleshooting
  - ai
  - background jobs
  - sql optimization
  - diagnostics
system: platform
review:
  state: reviewed
  by: opus
  at: "2026-10-08T01:57:54.941Z"
  flags: []
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    url: https://waldo.be/2025/12/24/bc-telemetry-buddy-when-your-12-year-old-accidentally-helps-you-find-a-problem/
    title: BC Telemetry Buddy  – When Your 12-Year-Old Accidentally Helps You Find a Problem
    date: "2025-12-24"
    commit: null
    t: null
    quote: null
  - kind: blog
    url: https://waldo.be/2025/12/24/bc-telemetry-buddy-when-your-12-year-old-accidentally-helps-you-find-a-problem/
    title: BC Telemetry Buddy  – When Your 12-Year-Old Accidentally Helps You Find a Problem
    date: "2025-12-24"
    commit: null
    t: null
    quote: One question. One answer. Immediate diagnosis with lots of details!
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post_id: "318461"
source_id: waldo-be
source_name: waldo's blog
url: https://waldo.be/2025/12/24/bc-telemetry-buddy-when-your-12-year-old-accidentally-helps-you-find-a-problem/
published_at: "2025-12-24T07:58:00.000Z"
author: waldo (Eric Wauters)
full_text: true
words: 991
quotes:
  - text: One question. One answer. Immediate diagnosis with lots of details!
    why_it_matters: "Demonstrates the core value proposition: BC Telemetry Buddy transforms hours of manual investigation into a single conversational query, dramatically reducing time investment for performance diagnostics."
code_objects_mentioned:
  - codeunit ISC Process Update Queue Meth
systems:
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  - administration
  - development
versions_mentioned: []
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---

# BC Telemetry Buddy  – When Your 12-Year-Old Accidentally Helps You Find a Problem

[Read the post](https://waldo.be/2025/12/24/bc-telemetry-buddy-when-your-12-year-old-accidentally-helps-you-find-a-problem/) · waldo's blog (waldo (Eric Wauters), MVP) · 2025-12-24 · 991 words · tier community · reviewed (checked by Opus)

> BC Telemetry Buddy is an MCP-based VS Code tool that lets you question Business Central telemetry in natural language instead of writing KQL. A casual demo question exposed a customer whose background queue codeunit ran slow full table scans on an unindexed queue table that lacked a retention policy. Diagnosis took about 15 minutes, and enabling retention plus adding an index removed the waste.

## Key points

- BC Telemetry Buddy uses AI over MCP so telemetry can be explored conversationally instead of through hand-written KQL.
- It flagged a customer where the codeunit ISC Process Update Queue Meth caused most of the wasted processing time through full table scans on an unindexed, unpurged queue table.
- Before the fix, about 19,946 slow queries ran each morning at 3.4 s on average; a month later only 18 ran in 7 days at 0.8 s, and Job Queue Dispatcher dropped below 25 minutes.
- Investigations can be saved as markdown files in the workspace, which makes it easy to check later that a fix worked.

## Quotes

- "One question. One answer. Immediate diagnosis with lots of details!" (Demonstrates the core value proposition: BC Telemetry Buddy transforms hours of manual investigation into a single conversational query, dramatically reducing time investment for performance diagnostics.)

## AL objects mentioned

As named in the post. A name that matches one object page by exact type and name links to it; the others stay as named.

- codeunit "ISC Process Update Queue Meth"

Not found in BC28-30: codeunit "ISC Process Update Queue Meth".

## Context

- Features: Natural language telemetry queries, Automated performance analysis, Investigation documentation, Table indexing recommendations, Retention policy management, CPU time analysis

Source: waldo's blog, community blog. Summary, key points and quotes are derived (CONTENT-NOTICE.md); read the original for the full text.