# RingCaptcha (ThriveCom)

**Canonical:** https://apis.io/providers/thrivecom/  
**Website:** https://ringcaptcha.com  
**APIs profiled:** 1

RingCaptcha, operated by ThriveCom, is a phone-verification and two-factor authentication (2FA) platform that helps businesses confirm real users and block fraud. It delivers one-time passcodes over SMS, voice, WhatsApp and missed-call (Blink) verification, normalizes and validates phone numbers to E.164, and returns fraud, carrier and device metadata to filter fake signups, bots and spam leads. Developers integrate through a simple form-encoded REST API at api.ringcaptcha.com, authenticated with per-application api_key, secret_key and app_key credentials, plus official client SDKs for Node.js, Python, PHP, Ruby, C#, Android, iOS and WordPress. RingCaptcha was surfaced as a 500 Global portfolio company and profiled through the API Evangelist enrichment pipeline.

## Kin Score — 31.1 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 31.1).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 0.0 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 51.2 |
| Commercial Clarity | 52.6 |
| Access Clarity | 52.6 |

Regulatory layer — **Telecommunications**: 41.7 (matched via tags).

## Agent readiness — 12.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| 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

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (1)

- **RingCaptcha Verification API** — Form-encoded REST API for phone verification and OTP: issue a session token, normalize a phone number, send a pincode over SMS or voice, and verify the user-entered code. Respon...

## MCP servers (1)

- **RingCaptcha (ThriveCom) MCP Server**

## Security (2)

- **Thrivecom Authentication** — apiKey · 3 schemes
- **Thrivecom Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Two-Factor Authentication, Phone Verification, One-Time Passcode, SMS, Voice, Fraud Prevention, Identity Verification, Authentication

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