99Bill

99Bill Corporation (快钱, Kuaiqian) is one of China's leading independent third-party electronic payment service providers, offering a comprehensive suite of online payment, mobile payment, and settlement solutions for merchants and enterprises. Its Kuaiqian Merchant Open Platform (open.99bill.com) exposes standardized payment interfaces over common internet protocols, covering protocol/agreement (card-free) payments, online banking (B2C and B2B) payments, and WeChat Official Account and Mini-Program payments, with SDKs and demo code published for Java, PHP, and .NET. Developers select a product in the Product Center, build against a sandbox using provided demos, then contact 99Bill business staff to activate a production merchant account (issued MerchantAcctID and product keys) before going live. 99Bill was surfaced as a portfolio company of DCM Ventures and is profiled here in the API Evangelist network. No public OpenAPI, AsyncAPI, or package-registry SDK was found during enrichment; developer resources are distributed through the authenticated open platform and help center.

99Bill is profiled on the APIs.io network. Tagged areas include Company, Fintech, Payments, Payment Processing, and Online Payment.

99Bill’s developer surface includes documentation, support, and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub

11.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyFintechPaymentsPayment ProcessingOnline PaymentMobile PaymentChinaMerchant Services

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 11.4/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 4.3 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/99bill: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: 99bill
name: 99Bill
description: 99Bill Corporation (快钱, Kuaiqian) is one of China's leading independent third-party electronic payment service
  providers, offering a comprehensive suite of online payment, mobile payment, and settlement solutions for merchants and
  enterprises. Its Kuaiqian Merchant Open Platform (open.99bill.com) exposes standardized payment interfaces over common internet
  protocols, covering protocol/agreement (card-free) payments, online banking (B2C and B2B) payments, and WeChat Official
  Account and Mini-Program payments, with SDKs and demo code published for Java, PHP, and .NET. Developers select a product
  in the Product Center, build against a sandbox using provided demos, then contact 99Bill business staff to activate a production
  merchant account (issued MerchantAcctID and product keys) before going live. 99Bill was surfaced as a portfolio company
  of DCM Ventures and is profiled here in the API Evangelist network. No public OpenAPI, AsyncAPI, or package-registry SDK
  was found during enrichment; developer resources are distributed through the authenticated open platform and help center.
url: https://raw.githubusercontent.com/api-evangelist/99bill/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- dcm-ventures
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-17'
image: https://www.99bill.com/favicon.ico
tags:
- Company
- Fintech
- Payments
- Payment Processing
- Online Payment
- Mobile Payment
- China
- Merchant Services
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.99bill.com/
- type: DeveloperPortal
  url: https://open.99bill.com/
- type: Documentation
  url: https://open.99bill.com/menu!access.do
- type: Support
  url: https://help.99bill.com/
- type: DomainSecurity
  url: security/99bill-domain-security.yml
- type: LLMsTxt
  url: llms/99bill-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence