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Customer Discovery

Free

Uncover a company's customer base through public data.

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Free · Opens the source repo

What Customer Discovery does

Customer Discovery is a powerful tool designed for developers and researchers seeking to gather insights into a company's clientele. By leveraging multiple public data sources, this skill enables users to compile a comprehensive list of customers associated with a specified company. The process involves scanning websites, case studies, review sites, social media, job postings, and more, ensuring a thorough investigation into the company's customer relationships.

The skill operates by requiring the user to input the company name, with an optional website URL and a depth tier that dictates how extensively the search is conducted. Users can choose from three depth levels: Quick, Standard, or Deep, each increasing in the number of sources and time required for data collection. The output is a deduplicated report that includes customer names, confidence levels, source types, and evidence URLs, providing a clear view of the findings.

This tool is particularly useful for competitive intelligence, marketing analysis, and business development. It helps users understand who a company sells to, which can inform strategic decisions, partnerships, and market positioning. The confidence scoring system adds an additional layer of reliability to the findings, allowing users to gauge the strength of the evidence supporting each customer claim.

Whether you are a developer looking to integrate customer insights into your applications or a business analyst conducting market research, Customer Discovery offers a structured approach to uncovering valuable information about a company's customer base.

When to use it

Use this tool when you need to gather competitive intelligence about a company's clientele for market analysis or strategic planning.

When not to use it

This skill may not be suitable for real-time customer data or for companies with limited public visibility, as it relies on publicly available information.

What you can build with it

Market Research for New Product Launch

Use Customer Discovery to identify potential customers for a new product by analyzing competitors' client bases.

Competitive Analysis

Gather insights on a competitor's customers to inform your business strategy and marketing efforts.

Sales Targeting

Utilize the findings to refine your sales approach by understanding which companies are currently using similar products.

How to install Customer Discovery

View source

1. Install with the skills CLI

npx skills add gooseworks-ai/goose-skills/customer-discovery --agent claude-code

2. Or install it manually

Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.

Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs

Inside SKILL.md

Written by gooseworks-ai

Customer Discovery

Find all customers of a company by scanning multiple public data sources. Produces a deduplicated report with confidence scoring.

Quick Start

Find all customers of Datadog
Who are Notion's customers? Use deep mode.

Inputs

InputRequiredDefaultDescription
Company nameYesThe company to research
Website URLNoAuto-detectedThe company's website URL
DepthNostandardquick, standard, or deep

Procedure

Step 1: Gather Inputs

Ask the user for:

  1. Company name (required)
  2. Company website URL (optional — if not provided, WebSearch for it)
  3. Depth tier — present these options, default to Standard:
    • Quick (~2-3 min): Website logos, case studies, G2 reviews, press search
    • Standard (~5-8 min): Quick + blog posts, Wayback Machine, LinkedIn, Twitter, Reddit, HN, job postings, YouTube
    • Deep (~10-15 min): Standard + SEC filings, podcasts, GitHub, integration directories, BuiltWith, Crunchbase

Step 2: Create Output Directory

mkdir -p customer-discovery-[company-slug]

Step 3: Run Sources for Selected Tier

Collect all results into a running list. For each customer found, record:

  • name: Company name
  • confidence: high / medium / low
  • source_type: e.g., "logo_wall", "case_study", "g2_review", "press", "job_posting"
  • evidence_url: URL where the evidence was found
  • notes: Brief description of the evidence

Quick Sources

1. Website logo wall

Run the scrape_website_logos.py script:

python3 skills/capabilities/customer-discovery/scripts/scrape_website_logos.py \
  --url "[company-url]" --output json

Parse the JSON output and add each result to the customer list.

2. Case studies page

Use WebFetch on the company's case studies page (try /case-studies, /customers, /resources/case-studies). Extract customer names from page headings and content.

3. G2/Capterra reviews

If the review-site-scraper skill is available, use it to find reviewer companies:

python3 skills/capabilities/review-site-scraper/scripts/scrape_reviews.py \
  --platform g2 --url "[g2-product-url]" --max-reviews 50 --output json

First, WebSearch for the company's G2 page: site:g2.com "[company]". Extract reviewer company names from review author info.

4. Web search for press

WebSearch these queries and extract customer mentions from results:

  • "[company]" customer OR "case study" OR partnership
  • "[company]" "we use" OR "switched to" OR "chose"

Standard Sources (in addition to Quick)

5. Company blog posts

WebSearch: site:[company-domain] customer OR "case study" OR partnership OR "customer story"

6. Wayback Machine logos

Run the scrape_wayback_logos.py script:

python3 skills/capabilities/customer-discovery/scripts/scrape_wayback_logos.py \
  --url "[company-url]" --output json

Logos marked still_present: false are especially interesting — they indicate former customers.

7. Founder/exec LinkedIn posts

WebSearch: site:linkedin.com "[company]" customer OR "excited to announce" OR "welcome"

8. Twitter/X mentions

WebSearch: site:twitter.com "[company]" "we use" OR "just switched to" OR "loving"

9. Reddit/HN mentions

WebSearch these queries:

  • site:reddit.com "we use [company]" OR "[company] customer"
  • site:news.ycombinator.com "[company]" customer OR user

10. Job postings

WebSearch: "experience with [company]" site:linkedin.com/jobs OR site:greenhouse.io OR site:lever.co

Companies requiring experience with the product are likely customers.

11. YouTube testimonials

WebSearch: site:youtube.com "[company]" customer OR testimonial OR review

Deep Sources (in addition to Standard)

12. SEC filings

WebSearch: site:sec.gov "[company]" — Look for mentions in 10-K and 10-Q filings.

13. Podcast transcripts

WebSearch: "[company]" podcast customer OR transcript OR interview

14. GitHub usage signals

WebSearch: site:github.com "[company-package-name]" in dependency files, package.json, requirements.txt, etc.

15. Integration directories

WebFetch marketplace pages where the company lists integrations:

  • Salesforce AppExchange
  • Zapier integrations page
  • Slack App Directory
  • Any marketplace relevant to the company

16. BuiltWith detection

python3 skills/capabilities/customer-discovery/scripts/search_builtwith.py \
  --technology "[company-slug]" --max-results 50 --output json

17. Crunchbase

WebSearch: site:crunchbase.com "[company]" customers OR partners

Step 4: Deduplicate Results

Merge results by company name using fuzzy matching:

  • Normalize: lowercase, strip suffixes (Inc, Corp, LLC, Ltd, Co., GmbH)
  • Treat "Acme Inc" = "Acme" = "ACME Corp" = "acme.com" as the same company
  • When merging, keep the highest confidence level and all evidence URLs

Step 5: Assign Confidence

Apply these rules:

High confidence:

  • Logo on current website (from scrape_website_logos.py with confidence "high")
  • Published case study or customer story
  • Direct quote or testimonial on the company's site
  • Official partnership page listing

Medium confidence:

  • G2/Capterra review (reviewer's company)
  • Press article mentioning customer relationship
  • Job posting requiring experience with the product
  • YouTube testimonial or video review
  • Logo found only in Wayback Machine (was on site, now removed)

Low confidence:

  • Single social media mention (tweet, Reddit post)
  • Indirect reference ("heard good things about X")
  • BuiltWith detection only (technology on site doesn't mean they're a paying customer)
  • HN discussion mention

Step 6: Generate Report

Create two output files:

customer-discovery-[company]/report.md:

# Customer Discovery: [Company Name]

**Date:** YYYY-MM-DD
**Depth:** quick | standard | deep
**Total customers found:** N

## High Confidence (N)

| Customer | Source | Evidence |
|----------|--------|----------|
| Shopify | Case study | [link] |
| ... | ... | ... |

## Medium Confidence (N)

| Customer | Source | Evidence |
|----------|--------|----------|
| ... | ... | ... |

## Low Confidence (N)

| Customer | Source | Evidence |
|----------|--------|----------|
| ... | ... | ... |

## Sources Scanned

- Website logo wall: [url] — N customers found
- G2 reviews: N reviews analyzed — N companies identified
- Wayback Machine: N snapshots checked — N logos found (N removed)
- Web search: N queries — N mentions
- ...

## Methodology

This report was generated using the customer-discovery skill, which scans
public data sources to identify companies that use [Company Name]. Confidence
levels reflect the strength and directness of the evidence found.

customer-discovery-[company]/customers.csv:

CSV with columns: company_name,confidence,source_type,evidence_url,notes

Write the CSV using a code block or Python script.

Scripts Reference

ScriptPurposeKey flags
scrape_website_logos.pyExtract logos from current website--url, --output json|summary
scrape_wayback_logos.pyFind historical logos via Wayback Machine--url, --paths, --output json|summary
search_builtwith.pyBuiltWith technology detection (deep mode)--technology, --max-results, --output json|summary

All scripts require requests: pip3 install requests

External skill scripts (use if available):

  • skills/capabilities/review-site-scraper/scripts/scrape_reviews.py — G2/Capterra/Trustpilot reviews (requires Apify token)
  • skills/capabilities/linkedin-post-research/scripts/search_posts.py — LinkedIn post search (requires Apify token)

Cost

  • Quick / Standard: Free (uses WebSearch + free APIs like Wayback Machine CDX)
  • Deep: Mostly free. BuiltWith paid API is optional (--api-key flag); free scraping is used by default.
  • External skills (review-site-scraper, linkedin-post-research) may require paid API tokens.

Frequently asked questions about Customer Discovery

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