Verisyn
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Pricing

Verisyn verifies claims, not files.

One paid tool. Everything else, discovery and reporting alike, is free.

ToolEndpointPurposePrice
verify_claimsPOST /api/asp/verify_claimsVerifies claims in a document against evidence sources, returns a Trust Report.$0.50
explain_claimPOST /api/asp/explain_claimDetail on a single claim from a prior report.Free
export_reportGET /api/asp/export_reportExport a report as JSON or Markdown.Free
healthGET /api/asp/healthService and configuration health check.Free

Base URL

https://verisyn.run/api

Authentication

No API keys, no accounts. Free tools require no authentication. The paid tool is gated by x402 payment instead of a credential.

x402 Payment Support

An unpaid call to verify_claims returns HTTP 402 with a standard x402 payment challenge, scheme exact, matched via an official facilitator, never a generic one.

Supported Networks

X Layer (eip155:196). Settlement asset: USDT0.