OPC / 彼岸花开

OPC / 彼岸花开 is a one-person company (OPC) operated by Lei Zhang in Hangzhou, China. Its agent-facing surface is a single A2A agent, "China On-Site Video Service": an agent (or a person) supplies a Google Maps link or coordinates for any place in China and Lei travels there and films about ten minutes of genuine, unscripted footage - streets, markets, temples, a family's old neighborhood - delivered by email as an MP4 for a fixed $50 USD (other requests at $50/hour, paid by Wise, Panda Remit or Remitly). The A2A agent card is served from the company's own domain at the legacy /.well-known/agent.json path and grades conformant against A2A 1.0.0; the JSON-RPC endpoint at /a2a/ is anonymous and live. It is an agent card in front of a human fulfilment service, not a software API: there is no OpenAPI, MCP server, SDK, developer documentation or developer signup. The site root hosts a separate login-gated Chinese consumer chat app (彼岸花开 · 花灵).

OPC / 彼岸花开 is listed with 1 API on the APIs.io network. Tagged areas include Company, Agents, A2A, Video, and Video Production.

OPC / 彼岸花开’s developer surface includes pricing, authentication, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

13.1/100 emerging ▬ flat Agent 11/100 agent aware Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

1 API

Company Agents A2A Video Video Production ChinaHangzhouTravel Genealogy Real EstateDocumentaryLocal ServicesOne-Person Company

Kin Score

Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0

Composite quality — 13.1/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.3 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 11/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 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

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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 github.com/api-evangelist/bianhuakai-club: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

China On-Site Video Service (A2A agent)

A2A agent operated by Lei Zhang: you provide a Google Maps link or coordinates of any place in China and a real local goes there and films ~10 minutes of genuine, unscripted eve...

Pricing Plans 1

Published pricing tiers and plan structures.

Bianhuakai Club Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Bianhuakai Club Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Bianhuakai Club Authentication

0 schemes

SECURITY

Bianhuakai Club Domain Security

TLSv1.3

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Conformance

Conformance

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

Pricing

Pricing

Plans

Plans

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

AgentCard

AgentCard

X-RegulatoryPosture

X-RegulatoryPosture

Source (apis.yml)

aid: bianhuakai-club
name: OPC / 彼岸花开
description: 'OPC / 彼岸花开 is a one-person company (OPC) operated by Lei Zhang in Hangzhou, China. Its agent-facing surface
  is a single A2A agent, "China On-Site Video Service": an agent (or a person) supplies a Google Maps link or coordinates
  for any place in China and Lei travels there and films about ten minutes of genuine, unscripted footage - streets, markets,
  temples, a family''s old neighborhood - delivered by email as an MP4 for a fixed $50 USD (other requests at $50/hour, paid
  by Wise, Panda Remit or Remitly). The A2A agent card is served from the company''s own domain at the legacy /.well-known/agent.json
  path and grades conformant against A2A 1.0.0; the JSON-RPC endpoint at /a2a/ is anonymous and live. It is an agent card
  in front of a human fulfilment service, not a software API: there is no OpenAPI, MCP server, SDK, developer documentation
  or developer signup. The site root hosts a separate login-gated Chinese consumer chat app (彼岸花开 · 花灵).'
url: https://raw.githubusercontent.com/api-evangelist/bianhuakai-club/refs/heads/main/apis.yml
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-19 (was stub; the a2aregistry.org harvest named the operator OPC / 彼岸花开 per the card's
  provider.organization and author fields - a one-person company, Lei Zhang, Hangzhou)
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- Company
- Agents
- A2A
- Video
- Video Production
- China
- Hangzhou
- Travel
- Genealogy
- Real Estate
- Documentary
- Local Services
- One-Person Company
tags_raw:
- Company
- Agents
- A2A
- Video
- Video Production
- China
- Hangzhou
- Travel
- Genealogy
- Real Estate
- Documentary
- Local Services
- One-Person Company
- Real-Estate
apis:
- name: China On-Site Video Service (A2A agent)
  description: 'A2A agent operated by Lei Zhang: you provide a Google Maps link or coordinates of any place in China and a
    real local goes there and films ~10 minutes of genuine, unscripted everyday footage (streets, markets, people, food, atmosphere)
    - not stock footage - delivered to your email as an MP4 attachment. One skill, film_video_at_location. JSON-RPC 2.0 over
    HTTPS, anonymous; the endpoint accepts the task and a human fulfils it, so completion is confirmed by email rather than
    by polling tasks/get. Fixed $50 USD per video, paid by remittance outside the protocol.'
  humanURL: https://bianhuakai.club/lei/
  baseURL: https://bianhuakai.club/a2a/
  tags:
  - A2A
  - Agents
  - Video
  - China
  - Hangzhou
  - Travel
  - Genealogy
  - Documentary
  properties:
  - type: AgentCard
    url: a2a/bianhuakai-club-a2a.yml
  - type: AgentCard
    url: https://bianhuakai.club/.well-known/agent.json
  - type: Pricing
    url: https://bianhuakai.club/lei/
  - type: Authentication
    url: authentication/bianhuakai-club-authentication.yml
  - type: Conventions
    url: conventions/bianhuakai-club-conventions.yml
  - type: Conformance
    url: conformance/bianhuakai-club-conformance.yml
  - type: Plans
    url: plans/bianhuakai-club-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/bianhuakai-club-rate-limits.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://bianhuakai.club/
- type: Pricing
  url: https://bianhuakai.club/lei/
- type: AgentCard
  url: a2a/bianhuakai-club-a2a.yml
- type: WellKnown
  url: well-known/bianhuakai-club-well-known.yml
- type: LLMsTxt
  url: llms/bianhuakai-club-llms.txt
- type: Authentication
  url: authentication/bianhuakai-club-authentication.yml
- type: Conventions
  url: conventions/bianhuakai-club-conventions.yml
- type: Conformance
  url: conformance/bianhuakai-club-conformance.yml
- type: Plans
  url: plans/bianhuakai-club-plans-pricing.yml
- type: RateLimits
  url: rate-limits/bianhuakai-club-rate-limits.yml
- type: DomainSecurity
  url: security/bianhuakai-club-domain-security.yml
- type: X-RegulatoryPosture
  url: regulatory/bianhuakai-club-regulatory-posture.yml
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 12
  pass: local-v3
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://bianhuakai.club/.well-known/agent.json
  grade: conformant
  protocol_version: 0.3.0
  control: 404

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