mcpbeat Sign in

Competitor Data Verifier Agent Skill

Verify and update competitor product data by scraping competitor websites using WebFetch/WebSearch. Use when the user asks to verify, check, or update competitor information in competitorData files (like amplitude.tsx, mixpanel.tsx), or when they want to ensure competitor feature data is accurate and current. This skill systematically checks product features, pricing, platform details, and generates update recommendations with source URLs for verification.

5k tokens
context cost
the whole folder, loaded on every use
4
files
instructions only
0
copies elsewhere
how many repositories repackaged it
1114
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository
npx skills add https://github.com/PostHog/posthog.com --skill competitor-data-verifier

What comes with it

15 634 bytes besides the instruction
references/example-workflow.md
references/report-template.md
references/schema-guide.md

What it tells the agent to use

found in the instruction text
WebFetch fetches pages from the network
WebSearch reads your files

The instruction itself

10 sections, as written by the author

Competitor Data Verifier

Verify and update competitor product data in src/hooks/competitorData/*.tsx by scraping competitor websites.

Tools Used

  • WebSearch: Find current pages and gather info across multiple sources
  • WebFetch: Scrape specific competitor pages for detailed feature/pricing data
  • Read: Load current competitor data files
  • Glob: Find all competitor data files

Core Workflow

1. Load Current Data

Read the competitor data file and understand what needs verifying:

Read src/hooks/competitorData/{competitor}.tsx

If any feature key is unclear (e.g. instant_rollbacks, persist_across_auth), check the matching feature definition file in src/hooks/featureDefinitions/ for the human-readable label and description. For example, feature keys under feature_flags.management.features are defined in src/hooks/featureDefinitions/feature_flags.tsx. This tells you exactly what the feature means so you can search for the right thing on the competitor's site.

2. Scrape in Parallel Batches

This is the most important optimization. Launch multiple WebFetch and WebSearch calls in parallel — don't do them one at a time.

Batch 1 — Direct page fetches + searches in parallel:

WebFetch: {competitor}.com/pricing           → pricing, plan names, free tier limits
WebFetch: {competitor}.com/session-replay     → session replay features
WebSearch: "{Competitor} features documentation site:{competitor}.com"
WebSearch: "{Competitor} security compliance SOC2 HIPAA site:{competitor}.com"

Batch 2 — Fill gaps (for anything Batch 1 missed or 404'd):

WebFetch: URLs discovered from Batch 1 search results
WebSearch: "{Competitor} {product} free tier limit {current_year}"
WebSearch: "{Competitor} integrations {specific_tool_name}"

Batch 3 — Targeted follow-ups for remaining unknowns. Try docs subdomains (docs.{competitor}.com) which scrape more reliably than marketing pages.

3. Handle Common Failures

WebFetch often returns incomplete content (nav/footer only) on JS-heavy pages. When this happens:

  • Try WebSearch instead — search results often contain the key facts in snippets
  • Try the docs subdomaindocs.{competitor}.com pages are usually static and scrape well
  • Try third-party sources — G2, Spendflo, and blog reviews often have current pricing/feature data (mark as Medium confidence)
  • Try alternative URL patterns — competitors reorganize pages frequently:
  • /pricing vs /plans vs /buy
  • /security vs /trust vs /compliance
  • /analytics vs /product-analytics vs /products/analytics
  • /integrations vs /data-connections vs /marketplace

4. Analyze and Compare

For each field in the competitor data file, classify as:

  • Verified accurate — source confirms current value
  • Needs updating — source shows different value (include old → new)
  • Needs manual verification — couldn't find definitive source
  • New capability found — competitor added something not in our data

5. Generate Report

Use this streamlined format (see references/report-template.md for full template):

# Competitor Data Verification: {Name}
Date: {date} | File: src/hooks/competitorData/{competitor}.tsx

## High-Confidence Changes (recommend applying)

**{field_path}**
Current: `{old}` → Recommended: `{new}`
Source: {url} | Quote: "{exact quote}"

## Needs Manual Verification

| Field | Current | Question | Source |
|-------|---------|----------|--------|

## Proposed Diff

6. Important Rules

  • Never auto-modify competitor data files — always present recommendations for user review
  • Always include source URLs — every claim needs a link
  • Be conservative — when uncertain, mark as "Needs manual verification"
  • Assign confidence levels:
  • High: Direct statement on official page, pricing table, feature comparison
  • Medium: Blog post, third-party review, implied from docs
  • Low: Marketing copy, inferred, conflicting sources
  • Use the current year in searches — competitor data changes frequently

Efficiency Tips

  • Launch 3-4 WebFetch calls in parallel per batch (they're independent)
  • WebSearch is better than WebFetch for pricing data (pricing pages are often JS-rendered)
  • The /pricing page is the single highest-value page — it reveals plan names, feature gates, and free tier limits all at once
  • Docs pages (docs.{competitor}.com) scrape more reliably than marketing pages
  • If a page 404s, don't retry — search for an alternative URL instead

Other skills for the same job

different authors, same section of the catalogue
Internal Comms
by anthropics
vendor ×13

A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.).

6k tokens
Competitive Ads Extractor
by frostant
×10

Extracts and analyzes competitors' ads from ad libraries (Facebook, LinkedIn, etc.) to understand what messaging, problems, and creative approaches are working. Helps inspire and improve your own ad campaigns.

2k tokens
Lead Research Assistant
by frostant
×8

Identifies high-quality leads for your product or service by analyzing your business, searching for target companies, and providing actionable contact strategies. Perfect for sales, business development, and marketing professionals.

2k tokens
Developer Growth Analysis
by frostant
×6

Analyzes your recent Claude Code chat history to identify coding patterns, development gaps, and areas for improvement, curates relevant learning resources from HackerNews, and automatically sends a personalized growth report to your Slack DMs.

4k tokens
App Store Optimization
by alirezarezvani
×3

Complete App Store Optimization (ASO) toolkit for researching, optimizing, and tracking mobile app performance on Apple App Store and Google Play Store

55k tokens scripts
Deeptools
by christophacham
×3

NGS analysis toolkit. BAM to bigWig conversion, QC (correlation, PCA, fingerprints), heatmaps/profiles (TSS, peaks), for ChIP-seq, RNA-seq, ATAC-seq visualization.

21k tokens scripts
Pymatgen
by christophacham
×3

Materials science toolkit. Crystal structures (CIF, POSCAR), phase diagrams, band structure, DOS, Materials Project integration, format conversion, for computational materials science.

26k tokens scripts
Enhance Prompt
by google-labs-code
vendor ×2

Transforms vague UI ideas into polished, Stitch-optimized prompts. Enhances specificity, adds UI/UX keywords, injects design system context, and structures output for better generation results.

3k tokens

How to use it

Copy the folder

Take posthog/competitor-data-verifier from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.