# Meer API Docs

- [Quickstart](https://docs.meerapi.com/guides/quickstart.md): Get a key and make your first lookup.
- [Introduction](https://docs.meerapi.com/api-reference/introduction.md): Base URL, authentication and credits.
- [Check a phone number](https://docs.meerapi.com/api-reference/phone-numbers/check-a-phone-number.md): Returns whether the number is on its country's do-not-call register. Send `webhook_url` to get the answer as a POST instead. See [Webhooks](/api-reference/webhooks).
- [Webhooks](https://docs.meerapi.com/api-reference/webhooks.md): Get lookup results as a POST to your URL.
- [Get usage](https://docs.meerapi.com/api-reference/usage/get-usage.md): Lifetime request counts for your account, by calendar month and country. Free. For credit balances and billing periods, use [the v2 endpoint](/api-reference/usage/get-usage-v2).
- [Get usage /v2](https://docs.meerapi.com/api-reference/usage/get-usage-v2.md): Check your account's credit balance and usage for a billing period. This endpoint is free and returns the latest recorded period by default.
- [List billing periods](https://docs.meerapi.com/api-reference/usage/list-billing-periods.md): Get your billing periods, newest first. Use a period's `id` with [Get usage /v2](/api-reference/usage/get-usage-v2) to check its usage. This endpoint is free.

## OpenAPI Specs

- [openapi](/api-reference/openapi.json)

## Optional

- [Get Meer](https://meerapi.com)


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