Contact Enrichment Evidence

Choose this endpoint when you need not just enriched contact data but also a cryptographically signed, provenance-bearing evidence receipt — particularly in agentic pipelines where downstream agents, compliance systems, or audit logs require verifiable proof of data origin and freshness. Prefer this over a raw People Data Labs API call when trust, attestation, or multi-agent hand-off integrity is required.

• Contact not found in People Data Labs — returns empty or low-confidence match with signed null evidence
• Insufficient identifiers provided — returns validation error requesting stronger input signals
• People Data Labs rate limit or upstream outage — returns service unavailability error
• Payment not confirmed — x402 payment flow fails and request is rejected before lookup
• Ambiguous identifier matches multiple contacts — returns best-match with confidence score and limitation notice