Y Combinator Companies Scraper

Finance & Company Data

Operated by Sourcelane✓ verified

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, 12:10 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

Lead generation: identify sector- and hiring-filtered YC companies (example: Fintech B2B companies hiring in 2024–2025) for CRM lists.
Investor research: track active, public, and acquired startups by batch or industry.
Competitive landscape mapping: extract all companies in a category (e.g., AI agents, Climate, Bio) for market maps.
Recruiting / outbound sourcing: find YC companies currently hiring in a target region.
News and content workflows: keep a "latest YC batch" dashboard updated when new batches launch.
M&A and banking deal flow: monitor acquired or public YC alumni for deal‑flow analysis.

Trust & reliability

7d uptime trend

Window	Uptime	Success rate	p50	p95
24h	—	—	—	—
7d	—	—	—	—
30d	—	—	—	—

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://cool-puffin-608.convex.site/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

Field	Type	Required	Description
`query`	string	optional	Full-text search across company name, tagline, description, and tags. Leave empty to match all companies (then use filters below).
`batches`	array	optional	Restrict to specific YC batches. Examples: 'Winter 2024', 'Summer 2024', 'Fall 2024', 'Spring 2025'. Leave empty for all batches.
`industries`	array	optional	Restrict to specific industries. Examples: 'B2B', 'Fintech', 'Healthcare', 'Consumer', 'Real Estate and Construction', 'Education', 'Industrials', 'Government'. Leave empty for all industries.
`regions`	array	optional	Restrict to specific regions. Examples: 'United States of America', 'Europe', 'India', 'Asia', 'Latin America', 'Africa', 'Remote'. Leave empty for all regions.
`status`	string	optional	Filter by company status.
`isHiring`	string	optional	Restrict to companies with open YC-posted jobs.
`topCompany`	string	optional	Restrict to YC's 'Top Companies' list (most valuable / influential).
`nonprofit`	string	optional	Restrict to nonprofits (Yes) or for-profits (No).
`launchedAfter`	string	optional	Optional. Only include companies launched on or after Jan 1 of this year.
`launchedBefore`	string	optional	Optional. Only include companies launched on or before Dec 31 of this year.
`maxItems`	integer	optional	Maximum companies to return. 0 = no cap. Capped at 100 per call.
`pageId`	string	optional	Optional. Paste NEXT_PAGE_ID from the previous run's Key-value store to resume from where you left off.

Each result contains

Field	Type	Description
`ycId`	integer	Yc Id
`name`	string	Name
`slug`	string	Slug
`ycUrl`	string	Yc Url
`website`	string	Website
`oneLiner`	string	One Liner
`longDescription`	string	Long Description
`batch`	string	Batch
`status`	string	Status
`stage`	string	Stage
`teamSize`	integer	Team Size
`isHiring`	boolean	Is Hiring
`topCompany`	boolean	—
`nonprofit`	boolean	—
`industry`	string	—
`subindustry`	string	—
`industries`	array	—
`tags`	array	—
`regions`	array	—
`allLocations`	string	—
`launchedAt`	string	—
`launchedAtUnix`	integer	—
`logoUrl`	string	—
`formerNames`	array	—

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. Paste one URL.

1Copy your personal connector URL
2In Claude open Settings → Connectors → Add custom connector
3Paste the URL and click Add — done

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://cool-puffin-608.convex.site/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://cool-puffin-608.convex.site/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://cool-puffin-608.convex.site/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://cool-puffin-608.convex.site/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://sourcelane-amber.vercel.app/openapi.json

REST

One POST. Pass maxResults to cap cost.

curl

curl -X POST https://cool-puffin-608.convex.site/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://cool-puffin-608.convex.site/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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