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Y Combinator Scraper with Founders & Emails

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Y Combinator scraper extracts startup profiles, founder names, company details, websites, publicly available emails, industries, batch information, and locations 🚀📧 Perfect for startup research, investor sourcing, B2B outreach, competitor analysis, and lead generation.

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from $1.99 / 1,000 results

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3 days ago

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Y Combinator Companies & Founders Scraper

Apify actor that scrapes the YC company directory with full company details, founders, founder emails, open jobs and news.

How it works

Data	Source	Library
Company list (with filters)	YC public Algolia index (`YCCompany_By_Launch_Date_production`)	`requests`
Company detail, founders, jobs, news	Each company page's `data-page` Inertia JSON, read with a CSS selector	`parsel`
Anti-bot fallback	Automatic escalation on `403/429/503`	`cloudscraper`
Founder emails	`first.last@domain` permutations + MX / best-effort SMTP verification	`dnspython`, `smtplib`

The HTTP layer (src/http_client.py) tries plain requests first and transparently retries through cloudscraper if a request is blocked.

Input

{
  "limit": 10,
  "get_founders": true,
  "getEmails": true,
  "includeRiskyEmails": true,
  "isHiring": false,
  "topCompanies": false,
  "nonprofit": false,
  "batches": ["All Batches"],
  "industries": ["All industries"],
  "regions": ["Anywhere"],
  "minEmployeeSize": "1+",
  "maxEmployeeSize": "1000+"
}

batches / industries / regions — use the sentinel values "All Batches", "All industries", "Anywhere" to mean no filter. Otherwise pass exact YC facet values, e.g. ["Fall 2024"], ["Healthcare","Fintech"], ["Europe"].
minEmployeeSize / maxEmployeeSize — any string with a number (e.g. "11+", "51-200"). "1000+" as the max means no upper bound.
includeRiskyEmails — when false, only positively verified addresses are kept.
smtpVerify (optional, default true) — set false to skip the SMTP RCPT check and mark every mail-capable domain as risky (much faster).

Output

One dataset item per company, matching the shape in the task spec: company_details, location, links, source_context, founders[] (with email / email_status), jobs[], news[] and data_quality.completeness_flags.

Run locally

pip install -r requirements.txt
# reads storage/key_value_stores/default/INPUT.json (Apify) or ./input.json
python -m src

Emails. YC does not publish founder emails, so addresses are generated from the founder's name + company domain and verified where possible. A domain with no mail server yields no address; a mailbox we cannot positively confirm is returned as risky.

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