# ValidatedMails > Email verification through an HTTP API, bulk CSV uploads, and a local stdio MCP adapter. ## Integration essentials - API origin: https://api.validatedmails.com - Authentication: Authorization: Bearer . Create keys at https://validatedmails.com/app/api-keys. - GET /api-keys/me checks credentials without spending credits. - POST /validate accepts {"email":"name@example.com"}. - POST /validate/batch accepts {"emails":["name@example.com"]}, up to 100 per request by default. - Branch on status: valid, risky, invalid, unknown. Unknown is inconclusive, not invalid. - One credit per conclusive validation; unknown results are free. - POST /discover accepts {"url":"https://example.com","crawl_depth":1}. It normally costs 2 credits when signals are found. - Inspect per-item batch errors. Do not automatically retry paid calls after ambiguous failures. - MCP is a downloadable local stdio adapter, not a hosted endpoint. ## Documentation - [ValidatedMails API documentation](https://validatedmails.com/docs-llm/index.md) - [Get started with the ValidatedMails Validate API](https://validatedmails.com/docs-llm/quick-start-validate.md) - [Get started with the ValidatedMails Discover API](https://validatedmails.com/docs-llm/quick-start-discover.md) - [Response Reference: /validate](https://validatedmails.com/docs-llm/api-response.md) - [Response Reference: /discover](https://validatedmails.com/docs-llm/api-response-discover.md) - [Validate email addresses with Python](https://validatedmails.com/docs-llm/api-python.md) - [Validate email addresses with JavaScript](https://validatedmails.com/docs-llm/api-javascript.md) - [Validate email addresses with Go](https://validatedmails.com/docs-llm/api-go.md) - [Validate email addresses with Java](https://validatedmails.com/docs-llm/api-java.md) - [Validate email addresses with C#](https://validatedmails.com/docs-llm/api-csharp.md) - [Validate email addresses with PHP](https://validatedmails.com/docs-llm/api-php.md) - [Validate email addresses with Rust](https://validatedmails.com/docs-llm/api-rust.md) - [Privacy Policy](https://validatedmails.com/docs-llm/privacy.md) - [Terms of Service](https://validatedmails.com/docs-llm/terms-of-service.md) - [Cookies Notice](https://validatedmails.com/docs-llm/cookies.md) - [Connect ValidatedMails with MCP](https://validatedmails.com/docs-llm/mcp.md)