yc

Y Combinator — the YC company directory

Query the yc-oss community dataset: every company Y Combinator has funded, sliced by batch, industry, tag, or a curated list. Use this connector to track the newest YC startups and what they do — batch, one-liner, industry, stage, team size, and status.

The data is static JSON refreshed daily, and there is no server-side search. Fetch a slice (a batch, industry, or tag) and filter in Agency. ycMeta lists the available slugs, so an agent can discover the newest batch before fetching it. No API key required.

Usage

import { ycBatch } from "std::data/tech/yc"

node main() {
  const companies = ycBatch("Winter 2025") catch []
  for (c in companies) {
    print("${c.name} — ${c.oneLiner} [${c.status}]")
  }
}

Types

Company

A YC company — a curated subset of the yc-oss record. launchedAt is a Unix timestamp.

/** A YC company — a curated subset of the yc-oss record. `launchedAt` is a Unix timestamp. */
export type Company = {
  id: number;
  name: string;
  slug: string;
  website: string;
  oneLiner: string;
  longDescription: string;
  batch: string;
  status: string;
  stage: string;
  teamSize: number;
  industry: string;
  subindustry: string;
  tags: string[];
  regions: string[];
  allLocations: string;
  launchedAt: number;
  topCompany: boolean;
  isHiring: boolean;
  nonprofit: boolean;
  url: string
}

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YcMeta

The available slugs for discovery (from meta.json), so a caller can find the newest batch.

/** The available slugs for discovery (from meta.json), so a caller can find the newest batch. */
export type YcMeta = {
  lastUpdated: string;
  batches: string[];
  industries: string[];
  tags: string[]
}

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Effects

std::yc

effect std::yc {
  op: string;
  query: string
}

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Functions

ycBatch

ycBatch(batch: string): Result<Company[]>

Fetch the YC companies in a batch. Returns each company's id, name, one-liner, batch, status, stage, team size, industry, tags, and URL. An unknown batch returns a failure.

@param batch - The YC batch, e.g. "Winter 2025" or "winter-2025"

Parameters:

Name	Type	Default
batch	string

Returns: Result<Company[]>

Throws: std::yc

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ycIndustry

ycIndustry(industry: string): Result<Company[]>

Fetch the YC companies in an industry. Returns each company's profile. An unknown industry returns a failure.

@param industry - The industry, e.g. "fintech" or "Healthcare"

Parameters:

Name	Type	Default
industry	string

Returns: Result<Company[]>

Throws: std::yc

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ycTag

ycTag(tag: string): Result<Company[]>

Fetch the YC companies with a tag. Returns each company's profile. An unknown tag returns a failure.

@param tag - The tag, e.g. "ai" or "SaaS"

Parameters:

Name	Type	Default
tag	string

Returns: Result<Company[]>

Throws: std::yc

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ycList

ycList(list: string): Result<Company[]>

Fetch a curated YC company list: "top", "all", "hiring", "nonprofit", "women-founded", "black-founded", or "hispanic-latino-founded". "all" is large (~6 MB); prefer a batch, industry, or tag slice when you can.

@param list - The curated list name

Parameters:

Name	Type	Default
list	string	"top"

Returns: Result<Company[]>

Throws: std::yc

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ycMeta

ycMeta(): Result<YcMeta>

Fetch the YC directory metadata: the available batch, industry, and tag slugs plus the last-updated timestamp. Use it to discover the newest batch slug before calling ycBatch.

Returns: Result<YcMeta>

Throws: std::yc

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