# Zong

**Canonical:** https://apis.io/providers/zong/  
**APIs profiled:** 0

Zong was a mobile carrier-billing micropayments company that let consumers buy digital goods, apps, and content and charge them directly to their mobile phone bill, without entering credit-card details. Founded in 2008 (spun out of Echovox) and led by CEO David Marcus, Zong was backed by Matrix Partners and NewMargin Ventures and published a developer API for selling and delivering content to mobile customers worldwide. eBay acquired Zong in 2011 for roughly $240M and folded its technology into PayPal; the brand went offline around May 2015 and zong.com now redirects to PayPal. The company is defunct and operates no live API or developer platform today.

## Kin Score — 0.1 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 0.1).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Payments**: 0.0 (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).

## Tags

Company, Fintech, Payments, Mobile Payments, Carrier Billing, Micropayments, Defunct, Acquired

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