---
title: API compatibility
description: 'InfluxDB Cloud Serverless supports a subset of the InfluxDB v2 API. Other endpoints in this reference are for the InfluxDB Cloud (TSM) API — they may be accessible, but are not supported or recommended for use with InfluxDB Cloud Serverless, which is powered by the InfluxDB 3 storage engine. Write data InfluxDB Cloud Serverless provides the following HTTP API endpoints for writing data: Recommended: /api/v2/write endpoint for new write workloads or for bringing existing InfluxDB v2 write workloa'
url: https://docs.influxdata.com/influxdb3/cloud-serverless/api/api-compatibility/
estimated_tokens: 545
publisher: InfluxData
canonical: https://docs.influxdata.com/influxdb3/cloud-serverless/api/api-compatibility/
---

[Download InfluxDB Cloud Serverless API Spec](/openapi/influxdb-cloud-serverless-api.yml)

InfluxDB Cloud Serverless supports a subset of the InfluxDB v2 API.
Other endpoints in this reference are for the InfluxDB Cloud (TSM) API —
they may be accessible, but are not supported or recommended for use with
InfluxDB Cloud Serverless, which is powered by the InfluxDB 3 storage engine.

### Write data

InfluxDB Cloud Serverless provides the following HTTP API endpoints for writing data:

* **Recommended**: `/api/v2/write` endpoint
  for new write workloads or for bringing existing InfluxDB v2 write workloads.
* `/write` endpoint for bringing existing InfluxDB v1 write workloads.

Both endpoints accept line protocol format and process data in the same way.

### Query data

InfluxDB Cloud Serverless provides the following protocols for executing a query:

* **Recommended**: *Flight+gRPC* request that contains an SQL or InfluxQL query.
* HTTP API `/query` request that contains an InfluxQL query.
  Use this endpoint when bringing existing InfluxDB v1 query workloads.

### Management endpoints

Use the following endpoints to manage Cloud Serverless resources:

* API tokens (authorizations) — create and manage API tokens
* Buckets — create and manage storage buckets
* Organizations — view and manage organizations
* Accounts — manage account information

### InfluxDB v2 compatibility

The `/api/v2/write` endpoint works with the Token authentication scheme and existing InfluxDB 2.x tools and code.

### InfluxDB v1 compatibility

The `/write` and `/query` endpoints work with InfluxDB 1.x username/password authentication and existing InfluxDB 1.x tools and code.

#### Related

* [Write data](/influxdb3/cloud-serverless/write-data/)
* [Get started querying InfluxDB](/influxdb3/cloud-serverless/get-started/query/)
* [Manage API tokens](/influxdb3/cloud-serverless/security/tokens/)
* [Manage buckets](/influxdb3/cloud-serverless/admin/buckets/)
* [Use the v2 HTTP API with Cloud Serverless](/influxdb3/cloud-serverless/guides/api-compatibility/v2/)
* [Use the v1 HTTP API with Cloud Serverless](/influxdb3/cloud-serverless/guides/api-compatibility/v1/)