# 99Bill

**Canonical:** https://apis.io/providers/99bill/  
**Website:** https://www.99bill.com/  
**APIs profiled:** 0

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.

## Kin Score — 7.0 / 100 (minimal)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 7.0).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Payments**: 9.4 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **99Bill Domain Security** — TLSv1.2 · HSTS

## Tags

Company, Fintech, Payments, Payment Processing, Online Payment, Mobile Payment, China, Merchant Services

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/99bill/). Scores are computed from the provider's own public artifacts under a published rubric.