Sourcelane

Y Combinator Companies Scraper

Finance & Company Data

Operated by Sourcelane✓ verified

Scrape every Y Combinator startup with batch, industry, region, status, hiring, team size, founders' description, website, and YC profile URL. Filter by W24/S24/X25 batches or any criteria.

Read full description

A web scraper that enumerates Y Combinator startups and returns structured company records for keyword and semantic search: it harvests company identifiers and profile links, external websites, short taglines and long descriptions, batch membership, operational status (e.g., active/public/acquired/inactive), company stage, team size, hiring indicator, curated top-company flag, nonprofit flag, industry taxonomy (industries, sub‑industries, tags), geographic regions and office locations, founding date (ISO and Unix timestamp), and logo assets. Technical capabilities include full‑text search across name/description/tags, filtering by batch/industry/region/status/hiring/nonprofit/founded‑date range, paginated fetching with automatic page traversal and a pagination cursor for resuming large pulls, producing one structured record per company for downstream analysis.

Verified Sep 28, 3:56 AM

$0.003

per yc company

Up to 100 per call. Only pay for results returned; failed calls are refunded.

What people use it for

You give it

  • Search query

    Full-text search across company name, tagline, description, and tags.

  • Batches

    Restrict to specific YC batches.

  • Industries

    Restrict to specific industries.

  • Founded after (YYYY)

    Optional.

  • Founded before (YYYY)

    Optional.

Optional settings

RegionsCompany statusCurrently hiringTop YC companyNonprofitMax itemsPage ID

You get back

Text & content
Long descriptionTags
People & accounts
Name
Numbers & stats
Team size
Location
RegionsAll locations
Dates
Launched at
Links & media
Yc URLLogo URL
Other details
Yc IDSlugWebsiteOne linerBatchStageHiringTop company+6 more

Trust & reliability

7d uptime trend
WindowUptimeSuccess ratep50p95Calls
24h————0
7d————0
30d————0

Calling contract

Call it through Sourcelane's gateway or MCP server. We run the connector, apply your agent's spend guardrails, and bill only the results returned.

Call it via Sourcelane

curl -X POST https://api.usesourcelane.com/v1/call \
  -H "Authorization: Bearer sl_live_your_agent_key" \
  -H "Content-Type: application/json" \
  -d '{"listing":"yc-companies-scraper","params":{"query":"","maxItems":5},"maxResults":10}'

Request params

FieldTypeRequiredDescription
querystringoptionalFull-text search across company name, tagline, description, and tags. Leave empty to match all companies (then use filters below).
batchesarrayoptionalRestrict to specific YC batches. Examples: 'Winter 2024', 'Summer 2024', 'Fall 2024', 'Spring 2025'. Leave empty for all batches.
industriesarrayoptionalRestrict to specific industries. Examples: 'B2B', 'Fintech', 'Healthcare', 'Consumer', 'Real Estate and Construction', 'Education', 'Industrials', 'Government'. Leave empty for all industries.
regionsarrayoptionalRestrict to specific regions. Examples: 'United States of America', 'Europe', 'India', 'Asia', 'Latin America', 'Africa', 'Remote'. Leave empty for all regions.
statusstringoptionalFilter by company status.
isHiringstringoptionalRestrict to companies with open YC-posted jobs.
topCompanystringoptionalRestrict to YC's 'Top Companies' list (most valuable / influential).
nonprofitstringoptionalRestrict to nonprofits (Yes) or for-profits (No).
launchedAfterstringoptionalOptional. Only include companies launched on or after Jan 1 of this year.
launchedBeforestringoptionalOptional. Only include companies launched on or before Dec 31 of this year.
maxItemsintegeroptionalMaximum companies to return. 0 = no cap. Capped at 100 per call.
pageIdstringoptionalOptional. Paste NEXT_PAGE_ID from the previous run's Key-value store to resume from where you left off.

Each result contains

FieldTypeDescription
ycIdintegerYc Id
namestringName
slugstringSlug
ycUrlstringYc Url
websitestringWebsite
oneLinerstringOne Liner
longDescriptionstringLong Description
batchstringBatch
statusstringStatus
stagestringStage
teamSizeintegerTeam Size
isHiringbooleanIs Hiring
topCompanyboolean—
nonprofitboolean—
industrystring—
subindustrystring—
industriesarray—
tagsarray—
regionsarray—
allLocationsstring—
launchedAtstring—
launchedAtUnixinteger—
logoUrlstring—
formerNamesarray—

Use Y Combinator Companies Scraper from Claude, ChatGPT or Cursor

Pick your tool and connect in under a minute. Then just ask — for example: “Which AI companies filed a Form D in the last two weeks, and how much did they raise?”

Connect Claude

Web, desktop and mobile. One click, then confirm.

  1. 1Click Add to Claude — claude.ai opens with Sourcelane filled in
  2. 2Click Continue to confirm — it then works in Claude desktop and mobile too
Manual setup (config files, REST, Python) +

Claude Code

Adds the Sourcelane MCP server with your key as a header.

terminal
claude mcp add --transport http sourcelane https://api.usesourcelane.com/mcp \
  --header "Authorization: Bearer sl_live_your_agent_key"

Claude Desktop (config file)

Alternative to the connector URL: add to claude_desktop_config.json, then restart Claude.

claude_desktop_config.json
{
  "mcpServers": {
    "sourcelane": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://api.usesourcelane.com/mcp",
        "--header",
        "Authorization:${AUTH_HEADER}"
      ],
      "env": {
        "AUTH_HEADER": "Bearer sl_live_your_agent_key"
      }
    }
  }
}

Cursor & Windsurf

Add to ~/.cursor/mcp.json (or Windsurf's mcp_config.json).

mcp.json
{
  "mcpServers": {
    "sourcelane": {
      "url": "https://api.usesourcelane.com/mcp",
      "headers": {
        "Authorization": "Bearer sl_live_your_agent_key"
      }
    }
  }
}

VS Code

Save as .vscode/mcp.json. VS Code prompts for your key once.

.vscode/mcp.json
{
  "servers": {
    "sourcelane": {
      "type": "http",
      "url": "https://api.usesourcelane.com/mcp",
      "headers": {
        "Authorization": "Bearer ${input:sourcelane-key}"
      }
    }
  },
  "inputs": [
    {
      "type": "promptString",
      "id": "sourcelane-key",
      "description": "Sourcelane agent key",
      "password": true
    }
  ]
}

ChatGPT Custom GPT (Actions)

Create a GPT → Actions → Import from URL, then Authentication: API Key, Bearer.

OpenAPI schema URL
https://usesourcelane.com/openapi.json

REST

One POST. Pass maxResults to cap cost.

curl
curl -X POST https://api.usesourcelane.com/v1/call \
  -H "Authorization: Bearer sl_live_your_agent_key" \
  -H "Content-Type: application/json" \
  -d '{"listing":"yc-companies-scraper","params":{"query":"","maxItems":5},"maxResults":10}'

Python, LangChain, CrewAI, OpenAI Agents SDK…

Wrap the REST call as a tool, or point an MCP client at the endpoint.

python
import requests

res = requests.post(
    "https://api.usesourcelane.com/v1/call",
    headers={"Authorization": "Bearer sl_live_your_agent_key"},
    json={
        "listing": "yc-companies-scraper",
        "params": {"query":"","maxItems":5},
        "maxResults": 10,
    },
    timeout=300,
)
body = res.json()
print(body["receipt"]["chargedMicros"], "micro-USD for", body["receipt"]["results"], "results")
print(body["data"])

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