# Connection

Check which Portal your API key connects to and which resources it can read or update.

Base URL: https://api.levr.ai/v1

Authentication: Bearer — Portal API key

[REST guide](https://docs.levr.ai/rest-api.md) · [OpenAPI specification](https://docs.levr.ai/generated/openapi.json)

OpenAPI defines exact REST schemas. Each record’s Application Contract defines its current questions and accepted answers.



- [Verify an API connection](https://docs.levr.ai/rest-api-reference/connection/get-external-api-connection.md): `GET /`