--- title: Query with the InfluxDB API description: Use the InfluxDB API to query InfluxDB data. url: https://docs.influxdata.com/influxdb/cloud/query-data/execute-queries/influx-api/ estimated_tokens: 4323 product: InfluxDB Cloud (TSM) version: cloud --- # Query with the InfluxDB API The [InfluxDB v2 API](/influxdb/cloud/reference/api) provides a programmatic interface for all interactions with InfluxDB. To query InfluxDB Cloud, do one of the following: - [Send a Flux query request](#send-a-flux-query-request) - [Send an InfluxQL query request](#send-an-influxql-query-request) ## Send a Flux query request Send a Flux query request to the following endpoint: [POST /api/v2/query](/influxdb/cloud/api/query-data/) In your request, set the following: - Your organization via the `org` or `orgID` URL parameters - Headers: - `Authorization: Token ` - `Accept: application/csv` - `Content-type: application/vnd.flux` - Your Flux query text in the request body #### Use gzip to compress a large query response To compress the query response, set the `Accept-Encoding` header to `gzip`. This saves network bandwidth, but increases server-side load. We recommend only using gzip compression on responses that are larger than 1.4 KB. If the response is smaller than 1.4 KB, gzip encoding will always return a 1.4 KB response, despite the uncompressed response size. 1500 bytes (~1.4 KB) is the maximum transmission unit (MTU) size for the public network and is the largest packet size allowed at the network layer. #### Flux - Example query request The following example shows how to use cURL to send a Flux query to InfluxDB Cloud: **Without compression:** ```bash curl \ --request POST \ http://cloud2.influxdata.com/api/v2/query?orgID=ORG_ID \ --header 'Authorization: Token API_TOKEN' \ --header 'Accept: application/csv' \ --header 'Content-type: application/vnd.flux' \ --data 'from(bucket:"BUCKET_NAME") |> range(start: -12h) |> filter(fn: (r) => r._measurement == "example-measurement") |> aggregateWindow(every: 1h, fn: mean)' ``` **With compression:** ```bash curl \ --request POST \ http://cloud2.influxdata.com/api/v2/query?orgID=ORG_ID \ --header 'Authorization: Token API_TOKEN' \ --header 'Accept: application/csv' \ --header 'Content-type: application/vnd.flux' \ --header 'Accept-Encoding: gzip' \ --data 'from(bucket:"BUCKET_NAME") |> range(start: -12h) |> filter(fn: (r) => r._measurement == "example-measurement") |> aggregateWindow(every: 1h, fn: mean)' ``` Replace the following with your values: - `ORG_ID` - the ID of the [organization](/influxdb/cloud/admin/organizations/) that owns the bucket. - `API_TOKEN` - your [token](/influxdb/cloud/admin/tokens/). - `BUCKET_NAME` - the name of the [bucket](/influxdb/cloud/admin/buckets/) to query. ## Send an InfluxQL query request To query InfluxDB Cloud using the [InfluxQL query language](/influxdb/v2/reference/syntax/influxql/), send a request to the v1-compatible API endpoint: [GET /query](/influxdb/v2/api/query-data-v1-compatible/#operation/GetLegacyQuery) [POST /query](/influxdb/v2/api/query-data-v1-compatible/#operation/PostQueryV1) In your request, set the following: - [1.x-compatible or 2.x authentication](/influxdb/v2/api-guide/influxdb-1x/#authentication) credentials - Headers: - `Accept: application/csv` or `Accept: application/json` - `Content-type: application/vnd.influxql` - The database and retention policy mapped to the bucket you want to query - Your InfluxQL query text If you have an existing bucket that doesn’t follow the **database/retention-policy** naming convention, you **must** [manually create a database and retention policy mapping](/influxdb/v2/query-data/influxql/dbrp/#create-dbrp-mappings) to query that bucket with the `/query` compatibility API. Use the `db` and `rp` query parameters to specify the database and retention policy for the bucket you want to query. #### InfluxQL - Example query request The following example shows how to use cURL to send an InfluxQL query to InfluxDB Cloud using v1-compatible authentication: **HTTP POST:** ```bash # 1.x compatible POST request using Basic authentication and InfluxQL curl --request POST \ "http://cloud2.influxdata.com/query?db=BUCKET_NAME&p=API_TOKEN&u=ignored" \ --header "Content-type: application/vnd.influxql" \ --data "SELECT * FROM home WHERE time > now() - 1h" ``` **HTTP GET:** ```bash # 1.x compatible GET request using Basic authentication and InfluxQL curl --get "http://cloud2.influxdata.com/query" \ --header "Accept: application/json" \ --data-urlencode "q=SELECT * FROM home WHERE time > now() - 1h" \ --data-urlencode "db=BUCKET_NAME" \ --data-urlencode "u=ignored" \ --data-urlencode "p=API_TOKEN" ``` Replace the following with your values: - `API_TOKEN` - your [token](/influxdb/cloud/admin/tokens/). - `BUCKET_NAME` - the name of the [bucket](/influxdb/cloud/admin/buckets/) to query. **Without compression:** ```bash curl --get "http://cloud2.influxdata.com/query" \ --header 'Accept: application/csv' \ --header 'Content-type: application/json' \ --data-urlencode "db=BUCKET_NAME" \ --data-urlencode "p=API_TOKEN" \ --data-urlencode "u=ignored" \ --data-urlencode "q=SELECT used_percent FROM example-db.example-rp.example-measurement WHERE host=host1" ``` **With compression:** ```bash curl --get "http://cloud2.influxdata.com/query" \ --header 'Accept: application/csv' \ --header 'Content-type: application/json' \ --header 'Accept-Encoding: gzip' \ --data-urlencode "db=BUCKET_NAME" \ --data-urlencode "p=API_TOKEN" \ --data-urlencode "u=ignored" \ --data-urlencode "q=SELECT used_percent FROM example-db.example-rp.example-measurement WHERE host=host1" ``` Replace the following with your values: - `API_TOKEN` - your [token](/influxdb/cloud/admin/tokens/). - `BUCKET_NAME` - the name of the [bucket](/influxdb/cloud/admin/buckets/) to query. InfluxDB returns the query results in [annotated CSV](/influxdb/cloud/reference/syntax/annotated-csv/). [query](/influxdb/cloud/tags/query/)