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niltonfrederico
niltonfredericoCOMMUNITY
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har-analysis

Analyze HAR files for performance metrics, API patterns, and security findings.

2|Updated Mar 24, 2026
Search Tags:#performance#debugging#security#mermaid#analysis#visualization#har
One-click install
npx skills add https://github.com/niltonfrederico/my-agents --skill har-analysis
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: har-analysis
Source: https://github.com/niltonfrederico/my-agents/tree/main/skills/har-analysis
Command: npx skills add https://github.com/niltonfrederico/my-agents --skill har-analysis

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

HAR files contain rich network data but are difficult to interpret quickly without specialized tooling. This skill analyzes HAR data to provide actionable performance insights, API debugging context, and security findings, enabling faster diagnosis and remediation.

Core Features & Use Cases

  • Performance analysis: timing breakdown, resource waterfall, and critical path insights.
  • API debugging: request/response pattern mapping, error categorization, and auth flow visualization.
  • Security assessment: header and cookie security checks, mixed content detection, and TLS/certificate review.
  • Visualization support: automatically generates Mermaid diagrams (sequence, flowchart, mindmap) to illustrate findings for reports and reviews.

Quick Start

Upload a HAR file and ask me to analyze it for performance, API issues, and security findings.

Frequently Asked Questions about har-analysis

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I analyze a HAR file for performance metrics and API issues?▼

HAR analysis extracts timing breakdowns, resource waterfalls, and API request/response patterns from the log, pages, and entries structure to identify errors and auth flows for performance and debugging insights.

Can I visualize HAR file network traffic using Mermaid diagrams?▼

Yes, HAR analysis automatically generates Mermaid sequence, flowchart, and mindmap diagrams to illustrate API call patterns, auth flows, and security findings for reports and reviews.

What security findings can I extract from a HAR file?▼

HAR analysis checks header and cookie security configurations, detects mixed content, and reviews TLS/certificate details to identify security findings within the captured web traffic.

What is the best way to debug API request and response patterns from web traffic captures?▼

Analyzing HAR files is an effective way to debug API patterns, as it maps request/response data, categorizes errors, and visualizes authentication flows to help diagnose reproducible issues.

Does HAR analysis work for frontend performance teams and security auditors?▼

Yes, HAR analysis is applicable for frontend performance teams, QA, and security auditors analyzing web traffic captures, providing critical path insights, resource timings, and security checks.

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