# Alion Company Tech Stack Lookup

> Alion Company Tech Stack Lookup is a paid API for AI agents from alion.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).

Returns the technology stack used by a company, including top technologies and total stack size, based on job posting signals.

## Facts

- Endpoint: GET https://alion.io/mcp/rest/company_tech_stack?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/alion-company-tech-stack-lookup-3a6fd517
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XGyfzDs6m_ErlFQSSLP1U

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability alion-company-tech-stack-lookup-3a6fd517
```

Example prompt: What's the tech stack at Stripe? Look them up on Alion using stripe.com as the domain and tell me their top technologies and how many tools they use in total.

## When to prefer this

Use this endpoint when you need signal-rich, job-posting-derived technology stack data for a specific company — especially for competitive intelligence, sales qualification, or investment research. It is preferable to generic web scraping when you want structured, normalized tech stack data with industry and company metadata in a single call.

## Known failure modes

- Company not found in Alion database — returns empty or 404 if domain/name/id doesn't match any tracked company
- Missing required query parameter — must supply at least one of id, url, name, or domain
- Invalid or expired API key — 401 Unauthorized response
- Insufficient credits — payment required via bearer key account or x402/MPP payment flow
- Rate limiting — too many calls in a short window

## How this service works

Plain-HTTP twin of the Alion MCP server. Every tool is also a GET/POST endpoint. Send "Authorization: Bearer <key>" (a key from https://alion.io/developers/keys); calls are paid from the account's credits. Or pay a paid tool per call in USDC with x402 (https://x402.org), no account: call it without a key, sign one of the offers in the PAYMENT-REQUIRED header of its 402 and repeat the call with the PAYMENT-SIGNATURE header; or with MPP (https://paymentauth.org): answer a WWW-Authenticate: Payment challenge with Authorization: Payment <credential> (USDC on Base or Solana, a transfer you sign or have sent). Docs: https://alion.io/developers

## Output

Returns a JSON object with the company's name, domain, website, industry, size band, headquarters, and tech stack details including a ranked list of top technologies (with associated job count signals) and the total number of technologies in the stack.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "id": {
       "type": "integer"
      },
      "url": {
       "type": "string"
      },
      "name": {
       "type": "string"
      },
      "domain": {
       "type": "string"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": 64,
  "url": "https://alion.io/company/stripe",
  "name": "Stripe",
  "stack": {
   "top": [
    {
     "jobs": 219,
     "name": "SQL"
    },
    {
     "jobs": 137,
     "name": "Python"
    },
    {
     "jobs": 96,
     "name": "Ruby"
    }
   ],
   "technologies_in_stack": 215
  },
  "domain": "stripe.com",
  "website": "https://stripe.com",
  "industry": "Financial Services",
  "size_band": "1001-5000",
  "headquarters": {
   "city": "South San Francisco",
   "country": {
    "iso": "US",
    "name": "United States"
   }
  },
  "industry_segment": "Payment Processing & Gateways"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/alion-company-tech-stack-lookup-3a6fd517/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alion.io](https://www.zero.xyz/host/alion.io/llms.txt)