# uChecker

**Canonical:** https://apis.io/providers/uchecker/  
**APIs profiled:** 3

Russian-language email-validation platform offering bulk and single email verification (SMTP mailbox existence, MX/DNS, catch-all, disposable, role-based, spam-trap/blacklist checks) plus free DNS/email tools. Access via REST API, a hosted MCP server, web dashboard, and Telegram bot.

## Kin Score — 53.2 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0.

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 61.5 |
| Governance | 20.8 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 54.3 |
| Commercial Clarity | 76.3 |

## Agent readiness — 63.5 (agent-native)

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

## APIs (3)

- **uChecker Аутентификация API** — Вход, регистрация, управление JWT-токенами и API ключами, привязка Telegram
- **uChecker Валидация Email API** — Проверка email-адресов, управление задачами валидации, получение и скачивание результатов
- **uChecker ESP Провайдеры API** — Программный интерфейс для ESP-провайдеров: расчёт стоимости и автоматическое создание аккаунтов с зачислением кредитов

## MCP servers (2)

- **mcp**
- **uchecker-mcp.yml**

## Security (2)

- **Uchecker Authentication** — apiKey/http · 3 schemes
- **Uchecker Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Uchecker Plans Pricing**

## Tags

email-verification, email, smtp, dns, deliverability, mx, spf, dkim, dmarc, mcp, agent-native, data-quality

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