Write data

Endpoints

POST /write Write line protocol (v1-compatible) POST /api/v2/write Write line protocol (v2-compatible) POST /api/v3/write_lp Write line protocol

Overview

Write data to InfluxDB 3 using line protocol format.

Timestamp precision across write APIs

InfluxDB 3 provides multiple write endpoints for compatibility with different InfluxDB versions. The following table compares timestamp precision support across v1, v2, and v3 write APIs:

Precisionv1 (/write)v2 (/api/v2/write)v3 (/api/v3/write_lp)
Auto detection❌ No❌ No✅ auto (default)
Seconds✅ s✅ s✅ second
Milliseconds✅ ms✅ ms✅ millisecond
Microseconds✅ u or µ✅ us✅ microsecond
Nanoseconds✅ ns✅ ns✅ nanosecond
Minutes✅ m❌ No❌ No
Hours✅ h❌ No❌ No
DefaultNanosecondNanosecondAuto (guessed)
All timestamps are stored internally as nanoseconds.