# China Supplier Evidence (CN Evidence)

> Agent-native API to verify a Chinese supplier before procurement. Resolve the exact Chinese legal entity, then retrieve company identity, public procurement track record, regulatory history, evidence sources/provenance and ambiguity-safe linkage. Paid calls use x402 v2 with USDC on Base.

Use this service for China supplier verification, China company KYB, vendor due diligence, public procurement track record, regulatory-history facts, and evidence provenance. Do not interpret missing records as nationwide absence: results are limited to currently configured official/open datasets.

Recommended call sequence: first resolve the company name for free; use Basic for low-cost screening; use Full only when detailed evidence rows or audit-ready provenance are needed.

## Discovery
- [OpenAPI](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/openapi.json): Full operation IDs, schemas, examples, prices and x402 payment metadata.
- [Agent manifest](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/.well-known/agent.json): Capability and payment manifest for agent runtimes.
- [x402 manifest](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/.well-known/x402): Agent402/x402 service discovery.
- [Machine root](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/): Compact machine-first service summary and decision guide.

## Capabilities
- [resolve_china_company](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/free/cn/entity/resolve?company=%E6%B7%B1%E5%9C%B3%E5%B8%82%E5%B8%8C%E6%96%BD%E7%8E%9B%E6%95%B0%E6%8D%AE%E7%A7%91%E6%8A%80%E6%9C%89%E9%99%90%E5%85%AC%E5%8F%B8): FREE GET. Use first to confirm the exact Chinese legal entity and avoid ambiguous linkage.
- [get_china_supplier_evidence_basic](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/x402/cn/supplier/evidence/basic): $0.002 USDC via x402 on Base. Verify a Chinese supplier before procurement with company identity, public procurement track record, regulatory history, evidence sources/provenance, linkage, fact flags and coverage summary.
- [get_china_supplier_evidence_full](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/x402/cn/supplier/evidence): $0.01 USDC via x402 on Base. Full Chinese supplier due diligence for procurement decisions: company identity, procurement track record, regulatory history, detailed evidence rows, evidence sources/provenance, dataset coverage, audit trail and ambiguity-safe linkage. POST JSON with company or 18-character uscc.

## Free machine-readable examples
- [Example index](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/.well-known/cn-evidence/examples/index.json): Static, no-database, no-payment examples and contract notes.
- [Resolve example](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/.well-known/cn-evidence/examples/resolve.json): Exact-match response plus a same-name candidate-shape illustration and a do-not-guess rule.
- [Basic example](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/.well-known/cn-evidence/examples/basic.json): Representative Basic request/response and interpretation rules.
- [Full example](https://cn-evidence-agent402-public.mikeyang7789.workers.dev/.well-known/cn-evidence/examples/full.json): Representative Full request with procurement + regulatory evidence rows, dataset coverage and minimum provenance contract.

## Scope and interpretation
- Facts found in currently configured official/open datasets; no nationwide China-wide completeness claim.
- Absence of a record is not proof that no record exists elsewhere.
- Regulatory facts are not converted into a black-box credit score.
- Ambiguous same-name records are not automatically attached to a company.