CN Evidence

CN Evidence (cnevidence.com, 中国企业数据与筛查报告) sells Chinese company data and limited-scope supplier screening reports, paid per call over HTTP x402 v2 in USDC on Base. Its Supplier Information API at api.cnevidence.com publishes an OpenAPI contract and a live tool catalog covering 64 individual company data tools (registration, shareholders, personnel, risk, IP, legal, tax, customs, certificates and more) plus legacy Basic/Full report packages, and it also advertises a remote MCP endpoint at mcp.cnevidence.com/mcp. The provider says plainly that empty results do not prove there is no risk and that it does not guarantee full coverage. Contact: contact@cnevidence.com.

CN Evidence publishes 3 API contracts indexed on the APIs.io network, including Free API, X402 API, and 1 more. Tagged areas include Company, China, Company Data, Due Diligence, and Supplier Screening.

The CN Evidence catalog on APIs.io includes 1 Spectral governance ruleset.

CN Evidence’s developer surface includes sandbox, authentication, documentation, getting-started guide, API reference, pricing, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

40.6/100 developing Agent 32/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers 3 Agent Skills

Company China Company Data Due DiligenceSupplier ScreeningKYB x402 Payments MCP Business Information

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 40.6/100 · developing

Contract Quality 7.7 / 19

Developer Ergonomics 8.5 / 15

Access Clarity 5.1 / 15

Operational Transparency 3.2 / 10

Contract Governance 2.9 / 9

Discoverability 4.6 / 8

Regulatory Posture 1.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too Ask about this →
Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified) Ask about this →

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 41.2 — up to +14.7 composite points Ask about this →
Access Clarity scores 34.0 — up to +13.2 composite points Ask about this →
Operational Transparency scores 33.3 — up to +8.7 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/cnevidence-com/apis.yml: open an issue on github.com/api-evangelist/cnevidence-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

CN Evidence MCP Server

Remote MCP endpoint advertised by CN Evidence exposing the same Chinese company data tools; the host root identifies itself as service "CN Evidence MCP" version 2.0.0.

CN Evidence Free API

The Free API from CN Evidence — 9 operation(s) for free.

CN Evidence X402 API

The X402 API from CN Evidence — 70 operation(s) for x402.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

CN Evidence MCP Server

Remote MCP server at mcp.cnevidence.com; 71 tools listed.

MCP SERVER

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

company-profile-lookup

AGENT SKILL

legacy-supplier-evidence

AGENT SKILL

risk-screening

AGENT SKILL

CN Evidence API pricing

Prices published by CN Evidence.

Plan	Price
V3 individual tools	0.011 USDC per call
Legacy Basic	0.032 USDC
Legacy Full	0.093 USDC
Standard screening (screening-standard-v1)	Standard screening, 0.29 USDC
Qualifications-enhanced screening (screening-enhanced-v1)	0.59 USDC
QCC qualifications (qcc-qualifications-v1)	0.03 USDC
Free compose	0 additional USDC

Plan details, limits and sources →

Rate limits

Transaction-hash reconciliation checks: Checks are limited to once per minute per uncertain order
Per-tool failure circuit breaker: Repeated upstream failures temporarily pause only the affected tool
QCC qualifications supplement daily ceiling: an account-wide 20-point UTC-day ceiling

Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

CN Evidence Plans Pricing

7 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

CN Evidence Rate Limits

3 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

CN Evidence API Rules

35 rules · 28 error-severity 5 warn-severity 2 info-severity

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

CN Evidence Openapi Overlay

85 actions · documentation · cnevidence-com-openapi.yml

DERIVED

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

CN Evidence Authentication

x402-payment · 3 schemes

SECURITY

CN Evidence Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

CN Evidence Agentic Access

79 operations · 73 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Sandbox

Sandbox

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

MCPServer

MCPServer

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

Idempotency

Conventions

Lifecycle

ErrorCatalog

Conformance

Build 5

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

IntegrationEdges

SDKs

Packages

GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

Overlay

Overlay

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: cnevidence-com
name: CN Evidence
description: 'CN Evidence (cnevidence.com, 中国企业数据与筛查报告) sells Chinese company data and limited-scope supplier screening reports,
  paid per call over HTTP x402 v2 in USDC on Base. Its Supplier Information API at api.cnevidence.com publishes an OpenAPI
  contract and a live tool catalog covering 64 individual company data tools (registration, shareholders, personnel, risk,
  IP, legal, tax, customs, certificates and more) plus legacy Basic/Full report packages, and it also advertises a remote
  MCP endpoint at mcp.cnevidence.com/mcp. The provider says plainly that empty results do not prove there is no risk and that
  it does not guarantee full coverage. Contact: contact@cnevidence.com.'
url: https://artifacts.apis.io/cnevidence-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  probe_state: covered
  source:
  - plans
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-04'
modified: '2026-11-04'
tags:
- Company
- China
- Company Data
- Due Diligence
- Supplier Screening
- KYB
- x402
- Payments
- MCP
- Business Information
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/cnevidence-com-agentic-access.yml
- type: RateLimits
  url: rate-limits/cnevidence-com-rate-limits.yml
- type: Plans
  url: plans/cnevidence-com-plans-pricing.yml
- type: Spectral
  url: rules/cnevidence-com-rules.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Idempotency
  url: conventions/cnevidence-com-conventions.yml
- type: Conventions
  url: conventions/cnevidence-com-conventions.yml
- type: Sandbox
  url: sandbox/cnevidence-com-sandbox.yml
- type: Authentication
  url: authentication/cnevidence-com-authentication.yml
- type: Lifecycle
  url: lifecycle/cnevidence-com-lifecycle.yml
- type: ErrorCatalog
  url: errors/cnevidence-com-problem-types.yml
- type: Conformance
  url: conformance/cnevidence-com-conformance.yml
- type: Overlay
  url: overlays/cnevidence-com-openapi-overlay.yaml
- type: ToolCrosswalk
  url: mcp/cnevidence-com-tool-crosswalk.yml
- type: MCPServer
  url: mcp/cnevidence-com-mcp.yml
- type: Hosts
  url: hosts/cnevidence-com-hosts.yml
- type: IntegrationEdges
  url: integrations/cnevidence-com-integration-edges.yml
- type: Vendors
  url: vendors/cnevidence-com-vendors.yml
- type: SDKs
  url: packages/cnevidence-com-packages.yml
- type: Packages
  url: packages/cnevidence-com-packages.yml
- type: DomainSecurity
  url: security/cnevidence-com-domain-security.yml
- type: Website
  url: https://cnevidence.com/
- type: Documentation
  url: https://yangchunhong3000.github.io/cn-evidence-public-docs/
- type: GettingStarted
  url: https://yangchunhong3000.github.io/cn-evidence-public-docs/buyer-guide.html
- type: APIReference
  url: https://api.cnevidence.com/openapi.json
- type: Pricing
  url: https://yangchunhong3000.github.io/cn-evidence-public-docs/products.html
- type: GitHubRepository
  url: https://github.com/yangchunhong3000/cn-evidence-public-docs
apis:
- aid: cnevidence-com:mcp-server
  name: CN Evidence MCP Server
  description: Remote MCP endpoint advertised by CN Evidence exposing the same Chinese company data tools; the host root identifies
    itself as service "CN Evidence MCP" version 2.0.0.
  humanURL: https://yangchunhong3000.github.io/cn-evidence-public-docs/
  baseURL: https://mcp.cnevidence.com/mcp
  tags:
  - MCP
  properties:
  - type: Documentation
    url: https://yangchunhong3000.github.io/cn-evidence-public-docs/
- aid: cnevidence-com:cnevidence-com-free-api
  name: CN Evidence Free API
  description: The Free API from CN Evidence — 9 operation(s) for free.
  humanURL: https://yangchunhong3000.github.io/cn-evidence-public-docs/
  baseURL: https://api.cnevidence.com
  tags:
  - Free
  properties:
  - type: OpenAPI
    url: openapi/cnevidence-com-free-api-openapi.yml
  - type: Documentation
    url: https://yangchunhong3000.github.io/cn-evidence-public-docs/
- aid: cnevidence-com:cnevidence-com-x402-api
  name: CN Evidence X402 API
  description: The X402 API from CN Evidence — 70 operation(s) for x402.
  humanURL: https://yangchunhong3000.github.io/cn-evidence-public-docs/
  baseURL: https://api.cnevidence.com
  tags:
  - x402
  tags_raw:
  - X402
  properties:
  - type: OpenAPI
    url: openapi/cnevidence-com-x402-api-openapi.yml
  - type: Documentation
    url: https://yangchunhong3000.github.io/cn-evidence-public-docs/
x-coverage:
  state: covered
  reason: identity-verified
  detail: Name from the cnevidence.com <title> "CN Evidence — 中国企业数据与筛查报告". The docs live on GitHub Pages under yangchunhong3000,
    linked from the cnevidence.com homepage. No terms, privacy, blog, status or signup page is published; there is no image
    beyond an inline SVG favicon.
  evidence:
  - url: https://cnevidence.com/
    status: 200
  - url: https://yangchunhong3000.github.io/cn-evidence-public-docs/
    status: 200
  - url: https://yangchunhong3000.github.io/cn-evidence-public-docs/buyer-guide.html
    status: 200
  - url: https://yangchunhong3000.github.io/cn-evidence-public-docs/products.html
    status: 200
  - url: https://api.cnevidence.com/openapi.json
    status: 200
  - url: https://github.com/yangchunhong3000/cn-evidence-public-docs
    status: 200
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 28
  pass: modular-v1
  engine: identity=anthropic,contract=anthropic,surfaces=anthropic,docs=anthropic,regulatory=anthropic

CN Evidence API — frequently asked questions

Does CN Evidence have an API?

Yes. APIs.io lists 3 APIs from CN Evidence, including CN Evidence MCP Server, CN Evidence Free API and CN Evidence X402 API.

Is there an OpenAPI specification for the CN Evidence API?

Yes. APIs.io indexes 2 OpenAPI specifications for CN Evidence, each linked for download from this page.

How do I authenticate with the CN Evidence API?

CN Evidence uses bearer-token authentication (x402-payment · 3 schemes). The details are profiled on APIs.io as CN Evidence Authentication.

How much does the CN Evidence API cost?

CN Evidence publishes its prices; its V3 individual tools plan is 0.011 USDC per call as of 2026-11-04. APIs.io lists 7 pricing plans for CN Evidence, with each plan's price, limits and inclusions under Pricing on this page.

Does CN Evidence have an MCP server?

Yes. APIs.io lists 1 MCP server for CN Evidence: Remote MCP server at mcp.cnevidence.com; 71 tools listed.

Is the CN Evidence API ready for AI agents?

CN Evidence has a Kin Score of 40.6 out of 100 (developing) and an Agent Readiness score of 32.1 (agent-ready), scored by API Evangelist on 2026-11-13.

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