---
title: Write data with the InfluxDB API
description: Use the /api/v2/write InfluxDB API endpoint to write data to InfluxDB.
url: https://docs.influxdata.com/influxdb/v2/write-data/developer-tools/api/
estimated_tokens: 3209
product: InfluxDB OSS v2
version: v2
---

# Write data with the InfluxDB API

This page documents an earlier version of InfluxDB OSS. [InfluxDB 3 Core](/influxdb3/core/) is the latest stable version.

#### API token hashing is enabled by default in InfluxDB OSS 2.9.0

Stronger token security: tokens are stored as hashes on disk, so a copy of the database file doesn’t expose usable tokens. Existing tokens are hashed on first startup and the original strings can’t be recovered afterward — **capture any plaintext tokens you still need before you upgrade**.

For more information, see [Token hashing](/influxdb/v2/admin/tokens/#token-hashing).

Write data to InfluxDB using an HTTP request to the InfluxDB API `/api/v2/write` endpoint. Use the `POST` request method and include the following in your request:

| Requirement | Include by |
| --- | --- |
| Organization | Use the org query parameter in your request URL. |
| Bucket | Use the bucket query parameter in your request URL. |
| Timestamp precision | Use the precisionquery parameter in your request URL. Default is ns. |
| API token | Use the Authorization: Token YOUR_API_TOKEN header. |
| Line protocol | Pass as plain text in your request body. |

#### Send a write request

The URL in the examples depends on the version and location of your InfluxDB 2.9 instance. [Customize URLs in examples](#)

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**cURL:**

```sh
curl --request POST \
"http://localhost:8086/api/v2/write?org=YOUR_ORG&bucket=YOUR_BUCKET&precision=ns" \
  --header "Authorization: Token YOUR_API_TOKEN" \
  --header "Content-Type: text/plain; charset=utf-8" \
  --header "Accept: application/json" \
  --data-binary '
    airSensors,sensor_id=TLM0201 temperature=73.97038159354763,humidity=35.23103248356096,co=0.48445310567793615 1630424257000000000
    airSensors,sensor_id=TLM0202 temperature=75.30007505999716,humidity=35.651929918691714,co=0.5141876544505826 1630424257000000000
    '
```

**Node.js:**

```js
'use strict'
/** @module write
 * Writes a data point to InfluxDB using the Javascript client library with Node.js.
**/

import { InfluxDB, Point } from '@influxdata/influxdb-client'

/** Environment variables **/
const url = process.env.INFLUX_URL
const token = process.env.INFLUX_TOKEN
const org = process.env.INFLUX_ORG
const bucket = process.env.INFLUX_BUCKET

/**
 * Instantiate the InfluxDB client
 * with a configuration object.
 **/
const influxDB = new InfluxDB({ url, token })

/**
 * Create a write client from the getWriteApi method.
 * Provide your `org` and `bucket`.
 **/
const writeApi = influxDB.getWriteApi(org, bucket)

/**
 * Apply default tags to all points.
 **/
writeApi.useDefaultTags({ region: 'west' })

/**
 * Create a point and write it to the buffer.
 **/
const point1 = new Point('temperature')
  .tag('sensor_id', 'TLM01')
  .floatField('value', 24.0)
console.log(` ${point1}`)

writeApi.writePoint(point1)

/**
 * Flush pending writes and close writeApi.
 **/
writeApi.close().then(() => {
  console.log('WRITE FINISHED')
})
```

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##### Use gzip compression with the InfluxDB API

When using the InfluxDB API `/api/v2/write` endpoint to write data, compress the data with `gzip` and set the `Content-Encoding` header to `gzip`. Compression reduces network bandwidth, but increases server-side load.

```sh
echo "airSensors,sensor_id=TLM0201 temperature=73.97038159354763,humidity=35.23103248356096,co=0.48445310567793615 1630525358 
  airSensors,sensor_id=TLM0202 temperature=75.30007505999716,humidity=35.651929918691714,co=0.5141876544505826 1630525358" | gzip > air-sensors.gzip

curl --request POST \
"http://localhost:8086/api/v2/write?org=YOUR_ORG&bucket=YOUR_BUCKET&precision=ns" \
  --header "Authorization: Token YOUR_API_TOKEN" \
  --header "Content-Encoding: gzip" \
  --header "Content-Type: text/plain; charset=utf-8" \
  --header "Accept: application/json" \
  --data-binary @air-sensors.gzip
```

*For information about **InfluxDB API response codes**, see [InfluxDB API Write documentation](/influxdb/v2/api/write-data/).*