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Real User Monitoring · jeremylongshore | DecimalAI

devopsby jeremylongshore

Real User Monitoring

jeremylongshore/implementing-real-user-monitoring

Source jeremylongshore/claude-code-plugins-plus-skills ↗License MIT

Implement Real User Monitoring (RUM) to capture actual user performance data including Core Web Vitals and page load times.

SkillScore77Maintained

Automatic

DevOps & SRE packperformancemonitoringreal-user

Last verified 8/30/2026

What it changes

Passed 17 of 22 test cases with the skill, and 11 of 22 without it.

Without skill50%

With skill77%

Checks it passed that the model alone missed

Configures data sampling to reduce performance impact.
Implements custom duration tracking using RUM SDK methods.
Implements custom performance event tracking using a RUM SDK.

and 4 more in the full report

7 fixed10 passed either way4 still failing1 broke

Pass-rate lift: +27 pp
Tokens: +41%
Agent turns: 0%
Response time: +4%

Model gemini-3.6-flashMeasured 8/30/2026v117 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/jeremylongshore-implementing-real-user-monitoring/SKILL.md https://app.decimal.ai/s/jeremylongshore-implementing-real-user-monitoring/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add jeremylongshore-implementing-real-user-monitoring, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/jeremylongshore-implementing-real-user-monitoring/ and pins it in .decimal/skills.lock

decimalai skills add jeremylongshore-implementing-real-user-monitoring

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/jeremylongshore-implementing-real-user-monitoring/SKILL.md https://app.decimal.ai/s/jeremylongshore-implementing-real-user-monitoring/SKILL.md

Raw file: /s/jeremylongshore-implementing-real-user-monitoring/SKILL.md ↗ · machine-readable summary at /s/jeremylongshore-implementing-real-user-monitoring.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 7

Prompt

We are looking to implement telemetry to track user experience and load metrics for our web portal. Please generate the necessary tracking scripts, platform configuration documentation, and metric visualization guidelines.

What was checked, without and with the skill
Checked	Without skill	With skill
Selects an established RUM platform such as Datadog RUM, New Relic, or Google Analytics.	Missed	Passed
Provides frontend tracking scripts for Core Web Vitals.	Passed	Passed
Includes platform configuration documentation and metric visualization guidelines.	Passed	Passed

case-03 · gemini-3.6-flash · 8/30/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md92 lines5 filesincludes scripts

Real User Monitoring

Implement Real User Monitoring (RUM) to capture Core Web Vitals, page load times, and custom performance events using Google Analytics, Datadog RUM, or New Relic.

Overview

This skill streamlines the process of setting up Real User Monitoring (RUM) for web applications. It guides you through the essential steps of choosing a platform, defining metrics, and implementing the tracking code to capture valuable user experience data.

How It Works

Platform Selection: Helps you consider available RUM platforms (e.g., Google Analytics, Datadog RUM, New Relic).
Instrumentation Design: Guides you in defining the key performance metrics to track, including Core Web Vitals and custom events.
Tracking Code Implementation: Assists in implementing the necessary JavaScript code to collect and transmit performance data.

When to Use This Skill

This skill activates when you need to:

Implement Real User Monitoring on a website or web application.
Track Core Web Vitals (LCP, FID, CLS) to improve user experience.
Monitor page load times (FCP, TTI, TTFB) for performance optimization.

Examples

Example 1: Setting up RUM for a new website

User request: "setup RUM for my new website"

The skill will:

Guide the user through selecting a RUM platform.
Provide code snippets for implementing basic tracking.

Example 2: Tracking custom performance metrics

User request: "I want to track how long it takes users to complete a purchase"

The skill will:

Help define a custom performance metric for purchase completion time.

Track record

Benchmark

17 / 22

test cases passed, vs 11 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

jeremylongshore / claude-code-plugins-plus-skills

skills/.curated/implementing-real-user-monitoring/SKILL.md

View on GitHub ↗

License MITImported 8/25/2026Version v1Bundled 4 files · scripts

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Real User Monitoring

Overview

How It Works

When to Use This Skill

Examples

Example 1: Setting up RUM for a new website

Example 2: Tracking custom performance metrics

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills