Tech Detect — Technology Stack Detection via x402

Choose this endpoint when you need pay-per-use technology fingerprinting without account registration or API keys — ideal for ad-hoc agent workflows, one-off competitive scans, or pipelines that need to avoid monthly subscription overhead. The x402 micropayment model makes it cost-efficient at scale for batch domain lookups billed only per successful call. The optional 'previous' parameter makes it especially useful for change-detection workflows where you want to diff against a prior snapshot.

• Invalid or unreachable URL returns an error with no stack data
• Private or firewalled domains may yield partial or empty results
• Low-confidence detections may be included with caveats
• Payment failure via x402 results in 402 response and no scan performed
• Malformed URL input rejected with validation error