BuiltWith API / Domain API -- full technology profile and metadata for a domain

BuiltWith tool builtwith-api-json on looot: input fields, $0.0495 per call, output shape, and code to run it with curl, JavaScript or Python.

Paid. Full detected-technology profile (all categories, live and dead, first/last detected dates) plus company metadata (spend history, revenue, employee count where available) for one or more domains (comma-separated, up to the account’s batch limit).

• Tool id: builtwith-api-json
• Provider: BuiltWith
• Job: List the tech stack and technologies a company’s website uses (company.technographics)
• Price: $0.0495 per call. A call that fails at the provider costs $0.

Inputs

Output

Shape of the run’s result, checked against 5 real answers:

{ Errors: { Code, Message }[], Results: { Meta: { City, ARank, Names: { ... }[], QRank, State, Emails: string[], Social: string[], Country, Majestic, Postcode, Vertical, Telephones: string[], CompanyName }, Lookup, Result: { IsDB, Paths: { ... }[], Spend, SpendHistory: { ... }[] }, Attributes: { BWS, RefIP, RefSN, BWRank, CGoals, MJRank, Tranco, GTMTags, Sitemap, CMetrics, PageRank, AdobeTags, Employees, Followers, MJTLDRank, QubitTags, AIMaturity, AIOpenness, AIReadiness, CDimensions, TealiumTags, AIVisibility }, LastIndexed, FirstIndexed, SalesRevenue }[] }

Run it

Every call needs your API token in LOOOT_TOKEN; Sign in shows how to get one. Each run also needs a new idempotency key, so a retry never pays twice. With wait: 30 the answer comes back inline when the run ends within 30 seconds. Otherwise you get the running run back: poll GET /v1/runs/<runId>.

Example input with placeholder values:

curl -X POST "https://api.looot.ai/v1/runs" \
  -H "Authorization: Bearer $LOOOT_TOKEN" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{"endpointId":"builtwith-api-json","input":{"LOOKUP":"<LOOKUP>"},"wait":30}'

const response = await fetch("https://api.looot.ai/v1/runs", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.LOOOT_TOKEN}`,
    "Content-Type": "application/json",
    "Idempotency-Key": crypto.randomUUID(),
  },
  body: JSON.stringify({
    endpointId: "builtwith-api-json",
    input: {
      LOOKUP: "<LOOKUP>",
    },
    wait: 30,
  }),
});
const run = await response.json();
console.log(run.status, run.result);

import os
import uuid

import requests

response = requests.post(
    "https://api.looot.ai/v1/runs",
    headers={
        "Authorization": f"Bearer {os.environ['LOOOT_TOKEN']}",
        "Idempotency-Key": str(uuid.uuid4()),
    },
    json={
        "endpointId": "builtwith-api-json",
        "input": {
            "LOOKUP": "<LOOKUP>",
        },
        "wait": 30,
    },
    timeout=90,
)
run = response.json()
print(run["status"], run.get("result"))

To let looot pick among every provider of this job instead, send job:company.technographics as endpointId; see the job page.