---
title: InfluxDB 1.x compatibility API
description: >
  placeholder
menu:
  influxdb_2_0_ref:
    name: 1.x compatibility
    parent: InfluxDB v2 API
weight: 104
aliases:
  - /v2.0/reference/api/influxdb-1x/
influxdb/v2.0/tags: [influxql, query, write]
products: [cloud]
related:
  - /influxdb/v2.0/query-data/influxql
---

The InfluxDB v2 API includes InfluxDB 1.x compatibility endpoints that work with
InfluxDB 1.x client libraries and third-party integrations like [Grafana](https://grafana.com) and others.

## Authentication
InfluxDB 2.0 requires all query and write requests to be authenticated.
Use **basic authentication** or **token authentication** to authenticate requests to
InfluxDB 1.x compatibility endpoints.

### Basic Authentication
Basic authentications requires the following credentials:

- **username**: InfluxDB username
- **password**: InfluxDB [authentication token](/v2.0/security/tokens/)

There are multiple ways to provide basic authentication credentials.
The example below uses the `Authorization` header with the `Basic` scheme to
provide the required credentials:

##### Basic authentication with authorization header
```sh
# Header syntax
Authorization: Basic <username>:<password>

# Header example
Authorization: Basic admin:mYSuP3rs3cREtT0k3N
```

### Token Authentication
Token authentication requires the following credential:

- **token**: InfluxDB [authentication token](/v2.0/security/tokens/)

Use the `Authorization` header with the `Token` scheme to provide your
authentication token to InfluxDB.

##### Token authentication with authorization header
```sh
# Header syntax
Authorization: Token <token>

# Header example
Authorization: Token mYSuP3rs3cREtT0k3N
```

## Compatibility endpoints

{{< children readmore=true >}}