YC and HN Tools

A collection of Mastra tools for interacting with the Y Combinator API and Hacker News. This package provides tools to search, filter, and retrieve information about YC companies and Hacker News content.

Tools

YC API Tools

1. Search Companies

Search for YC companies using various filters:

const searchCompanies = createTool({
  id: 'Search YC Companies',
  inputSchema: {
    query?: string,    // Search query
    batch?: string,    // Batch identifier (e.g., 'W25')
    status?: string,   // Company status
    page?: number      // Page number for pagination
  }
});

2. Get Company by Slug

Fetch a specific YC company by its slug:

const getCompanyBySlug = createTool({
  id: 'Get YC Company by Slug',
  inputSchema: {
    slug: string       // Company slug identifier
  }
});

3. List Companies by Batch

Get all companies from a specific YC batch:

const listCompaniesByBatch = createTool({
  id: 'List YC Companies by Batch',
  inputSchema: {
    batch: string      // Batch identifier (e.g., 'W25')
  }
});

Hacker News Tools

1. Search Hacker News

Search for content across Hacker News:

const searchHackerNews = createTool({
  id: 'Search Hacker News',
  inputSchema: {
    query: string,     // Search query
    page?: number,     // Page number (0-based)
    type?: 'story' | 'comment' | 'poll' | 'job' | 'pollopt'  // Content type
  }
});

2. Get Top Stories

Fetch current top stories from Hacker News:

const getTopStories = createTool({
  id: 'Get Top HN Stories',
  inputSchema: {
    page?: number,     // Page number (0-based)
    limit?: number     // Stories per page (max 100)
  }
});

Installation

pnpm install

Testing

The project includes a comprehensive test suite that verifies:

• YC company search and filtering
• HN content search and retrieval
• Rate limiting handling
• Cross-platform integrations (e.g., finding HN discussions about YC companies)

Run the tests with:

pnpm test

Environment Variables

Create a .env file with:

OPENAI_API_KEY=your_api_key_here

API Rate Limiting

Both the YC API and HN Algolia API include built-in rate limiting handling. If you encounter a 429 response, the tools will provide the recommended retry delay in seconds.

Development

Project Structure

src/
  ├── ycapi.ts         # YC API tools implementation
  ├── hnapi.ts         # Hacker News tools implementation
  ├── index.ts         # Package exports
  └── __tests__/       # Test files

Adding New Tools

1. Define your tool using createTool from @mastra/core/tools
2. Add input validation using Zod schemas
3. Implement the execute function
4. Export the tool from index.ts
5. Add corresponding tests

License

ISC