Company APIs

CheckFeature

Check whether a company has a specific feature, technology, or capability - JavaScript libraries, security/compliance badges, technology stacks, integrations, and more. Both company (note: this field is named company, not company_name) and feature are required. The request is queued asynchronously and returns a request_id; poll or supply a callback_url. The completed result carries has_feature, a confidence level, and supporting evidence. A credit is charged only when a result is produced.

POST https://api.nyne.ai/company/checkfeature API key

API Key API Secret

Manual credentials take precedence over your account key.

Try it needs these required parameters:

Overview

Detect whether a company’s site has a given feature, technology, or capability.

Parameters

company string required

Company name or domain to check. Named company, not company_name - this is a client-facing contract. Max 255 chars.

feature string required

Feature to detect, e.g. “jQuery library”, “SOC 2 badge”, “uses Cloudflare”. Max 500 chars.

callback_url string optional

http(s) URL on an allowed host that receives the completed payload automatically.

Polling for the result

This endpoint is asynchronous. A successful submit returns a request_id while the job runs in the background. Poll the same path with a GET request - same authentication headers - passing the request_id as a query parameter:

Loading your API credentials...

Each poll returns the job's current status; once it is completed the payload carries the result shown under Responses. Polling an unknown or expired request_id returns 404 request_not_found.

Status	Meaning
queued · processing · pending	The job is still running - keep polling.
completed	The job finished; the payload carries the result and completed: true.
failed	Terminal - the job could not complete; the error field explains why.

Poll every few seconds at first, backing off for long-running jobs. Polling is free - status checks never burn credits.

Prefer push delivery?

Supply the optional callback_url parameter and the completed payload is POSTed to your endpoint when the job finishes - no polling required. Delivery is retried up to 5 times with exponential backoff (1s, 5s, 15s, 1m, 5m) and a 30-second timeout per attempt; respond with a 2xx status to acknowledge receipt.

Credit usage

Credits are charged based on the matched configuration. The listed cost is the per-result unit price.

Feature	Credits	Notes
CheckFeature	-	Charged once when a result (found/not_found) is produced
No data	0	No result / failure never burns credits

Heads up

A positive credit balance is required before each request. Empty results do not burn credits.

Responses

202 Feature check queued - poll the status endpoint with the returned request_id

400 missing_parameters / invalid_parameters / invalid_callback_url

401 Missing or invalid API credentials

403 subscription_required or ip_not_allowed

404 no checkfeature data found (no credit charged)

429 rate_limit_exceeded / monthly_limit_exceeded

503 service_unavailable - the API is temporarily unavailable

A successful response wraps the payload in the { success, data, timestamp } envelope (also shown live in the panel on the right):

{
  "success": true,
  "data": {
    "request_id": "64f2d8e4cf1f065a9b4e7fbc3df6aabb_1700000123_4410",
    "status": "completed",
    "completed": true,
    "result": {
      "company": "stripe.com",
      "feature": "React",
      "has_feature": true,
      "confidence": "high",
      "evidence": "React 18 detected in the site's bundled JavaScript."
    },
    "completed_on": "2026-01-15T10:35:00Z"
  },
  "timestamp": "2026-01-01T00:00:00"
}