---
title: Quick start
description: 'Authenticate, write, and query with the API: Create an admin token to authorize API requests. curl -X POST "http://localhost:8181/api/v3/configure/token/admin" Check the status of the InfluxDB server. curl "http://localhost:8181/health" \ --header "Authorization: Bearer ADMIN_TOKEN" Write data to InfluxDB. curl "http://localhost:8181/api/v3/write_lp?db=sensors&precision=auto" --header "Authorization: Bearer ADMIN_TOKEN" \ --data-raw "home,room=Kitchen temp=72.0 home,room=Living\ room temp=71.5"I'
url: https://docs.influxdata.com/influxdb3/core/api/quick-start/
estimated_tokens: 829
product: InfluxDB 3 Core
version: core
---

[Download InfluxDB 3 Core API Spec](/openapi/influxdb3-core-openapi.yml)

Authenticate, write, and query with the API:

1. Create an admin token to authorize API requests.
    
    ```bash
    curl -X POST "http://localhost:8181/api/v3/configure/token/admin"
    ```
    
2. Check the status of the InfluxDB server.
    
    ```bash
    curl "http://localhost:8181/health" \
       --header "Authorization: Bearer ADMIN_TOKEN"
    ```
    
3. Write data to InfluxDB.
    
    ```bash
    curl "http://localhost:8181/api/v3/write_lp?db=sensors&precision=auto"
      --header "Authorization: Bearer ADMIN_TOKEN" \
      --data-raw "home,room=Kitchen temp=72.0
     home,room=Living\ room temp=71.5"
    ```
    
    If all data is written, the response is `204 No Content`.
    
4. Query data from InfluxDB.
    
    ```bash
    curl -G "http://localhost:8181/api/v3/query_sql" \
      --header "Authorization: Bearer ADMIN_TOKEN" \
      --data-urlencode "db=sensors" \
      --data-urlencode "q=SELECT * FROM home WHERE room='Living room'" \
      --data-urlencode "format=jsonl"
    ```
    
    Output:
    
    ```jsonl
    {"room":"Living room","temp":71.5,"time":"2025-02-25T20:19:34.984098"}
    ```
    

For more information about using InfluxDB 3 Core, see the [Get started](/influxdb3/core/get-started/) guide.