# GET /company/techstack: $0.01 per call

What technology a company uses, from its website and DNS: CMS/website builder, frameworks, analytics and ad pixels, marketing and support tools, payments, hosting/CDN, email provider and senders, DNS host and SaaS verification records (Slack, Atlassian, Stripe...), plus its official social profiles. Pass ?domain=stripe.com. Cached daily.

- **Price:** $0.01 in USDC, the same on Base, Solana, Polygon, Arbitrum. Failed calls are never charged.
- **Free trial:** yes, 20 free calls a day from Claude, Cursor or any MCP client ([set-up](/mcp/setup)).
- **Tier:** cached
- **Answers cached for:** 1 day(s)
- **Data sources:** the company's website; Cloudflare DNS (free)
- **Lane:** Business research ([OpenAPI](/openapi/business.json))
- **Live health:** [status page](/status)

## Free sample

See an answer for the demo input first, free (no payment, 10 a minute): [https://aayatai.com/sample/company-techstack](/sample/company-techstack). It is a stored real answer when we have one, otherwise an example marked `"kind": "illustrative"`.

```bash
curl "https://aayatai.com/sample/company-techstack"
```

## 1. See the price (free)

Call it without paying: you get `402 Payment Required` and a `PAYMENT-REQUIRED` header with the exact price and where to pay.

```bash
curl -i "https://aayatai.com/company/techstack?domain=example.com"
```

## 2. Pay and call (TypeScript)

```bash
npm install @x402/fetch @x402/evm viem
```

```ts
import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

// A wallet used only by your agent, holding a little USDC on Base.
const account = privateKeyToAccount(process.env.WALLET_PRIVATE_KEY as `0x${string}`);
const pay = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

const res = await pay("https://aayatai.com/company/techstack?domain=example.com");
console.log(await res.json());
```

## 3. Or as an MCP tool

```ts
// MCP server: https://aayatai.com/mcp (Streamable HTTP). With the x402 MCP client (see /start):
const result = await client.callTool("company-techstack", {"domain":"example.com"});
```

## Inputs

- `domain` **(required)** (string): Company website domain, e.g. stripe.com (a full URL also works).
- `name` (string): Company name, if you know it (improves registry and news matching).

Bad inputs are rejected with HTTP 400 before any payment is asked for.

## Example answer

```json
{
  "domain": "example.com",
  "url": "https://example.com/",
  "name": "Example",
  "description": "An example company.",
  "language": "en",
  "technologies": [
    {
      "name": "Next.js",
      "category": "framework",
      "evidence": "page source"
    },
    {
      "name": "Vercel",
      "category": "hosting",
      "evidence": "x-vercel-id header"
    },
    {
      "name": "Google Workspace",
      "category": "email",
      "evidence": "MX record"
    },
    {
      "name": "Stripe",
      "category": "payments",
      "evidence": "page source"
    }
  ],
  "byCategory": {
    "framework": [
      "Next.js"
    ],
    "hosting": [
      "Vercel"
    ],
    "email": [
      "Google Workspace"
    ],
    "payments": [
      "Stripe"
    ]
  },
  "emailProvider": "Google Workspace",
  "dnsHost": "Cloudflare DNS",
  "hosting": [
    "Vercel"
  ],
  "socials": {
    "linkedin": "https://www.linkedin.com/company/example"
  }
}
```

## Related

- [GET /company/profile](/services/company-profile) ($0.03): Live company profile from its domain: everything in /company/techstack plus domain age and registrar, security headers, likely legal entities in the global LEI 
- [GET /company/report](/services/company-report) ($0.25): Research a company in one call: an AI-written one-page report from its website, tech stack, domain age, legal-entity and UK registry matches and the last 30 day

New here? [Getting started in 60 seconds](/start). All services: [Aayat AI](/).