B2B Authentication API

Verify every listing on your resale platform.

ThreadTag gives marketplaces, resale apps, and Shopify sellers a hosted AI authentication engine behind a single REST call. Coverage for sneakers and clothing, signed responses, and SLA-backed latency — without standing up your own model.

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Integration in hours. Not months.

Coverage

Sneakers and clothing, evaluated across stitching, hardware, label typography, and material response. New categories ship monthly.

Latency

Priority-lane p95 below 8 seconds on Growth and Scale tiers. Proven under live load during marketplace drops.

Integration

Single POST endpoint with bearer-key auth. Drop-in SDKs for Node, Python, and Ruby. Webhooks for async batch uploads.

Pick the tier that fits your volume.

Tier	Rate limit	Per verification	Latency lane
Starter	60 /min	$0.50	Standard	Start with Starter
Growth Most popular Priority lane	600 /min	$0.25	Priority	Start with Growth
Scale Priority lane Dedicated capacity	3,000 /min	$0.10	Priority	Start with Scale

Ship authentic-only listings.

Connect your platform in hours and start verifying today.

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