POST /api/ingest/ndjson - ingest log events

The ingest endpoint accepts a batch of log events as NDJSON and ingests them into the index attached to your ingest API key. Your log shippers authenticate with a per-index ingest API key, so you manage access centrally and each key writes only to its own index. If you want the full setup flow, see Send logs.

Endpoint

POST /api/ingest/ndjson

Authentication

Authorization: Bearer <your-ingest-token>

You must include a valid ingest API key in every request. Create ingest keys in the Rootprint web UI at Settings → API keys. Each key is scoped to exactly one index; Rootprint uses that index as the ingestion target.

Request body

Set Content-Type: application/x-ndjson (or application/json). The body must contain one JSON object per line. Each line represents a single log event. The body cannot be empty. Gzip-compressed bodies are supported: send Content-Encoding: gzip and Rootprint forwards it to Quickwit unchanged.

NDJSON (Newline Delimited JSON) means each log entry is a complete JSON object on its own line, with a newline character (\n) between entries. There is no wrapping array.

Example request

curl -X POST 'https://<your-rootprint>/api/ingest/ndjson' \
  -H 'Authorization: Bearer rp_abc123' \
  -H 'Content-Type: application/x-ndjson' \
  --data-binary @- <<'EOF'
{"timestamp_nanos":1776340800000000000,"severity_text":"INFO","body":{"message":"User logged in"},"service_name":"frontend","attributes":{"user_id":"alice"},"resource_attributes":{},"trace_id":"","span_id":"","trace_flags":0,"observed_timestamp_nanos":1776340800000000000,"severity_number":9,"dropped_attributes_count":0,"resource_dropped_attributes_count":0,"scope_name":"","scope_version":"","scope_attributes":{},"scope_dropped_attributes_count":0}
{"timestamp_nanos":1776340860000000000,"severity_text":"ERROR","body":{"message":"Connection timeout"},"service_name":"api-gateway","attributes":{},"resource_attributes":{},"trace_id":"","span_id":"","trace_flags":0,"observed_timestamp_nanos":1776340860000000000,"severity_number":17,"dropped_attributes_count":0,"resource_dropped_attributes_count":0,"scope_name":"","scope_version":"","scope_attributes":{},"scope_dropped_attributes_count":0}
EOF

Rootprint targets the index configured on the ingest API key. Check the key in Settings → API keys if you need to confirm where a shipper writes.

Response

On success, Rootprint returns a 200 response. Authentication errors (401, 403) are generated by Rootprint. Success responses and 4xx indexing errors (including 400 for an empty or unparseable body) come from the search engine.

number

The number of log events accepted for indexing in this request.

Example success response:

{ "num_docs_for_processing": 2 }

num_docs_for_processing is the count of documents accepted for indexing, not the count successfully indexed. If individual documents fail validation against the index schema, the search engine logs the failure on the server but the API response stays the same. Inspect the search engine’s stdout (or your log shipper) when you suspect documents are being silently dropped.

The OTLP endpoint behaves differently: POST /v1/logs reports per-record rejections through partial_success. See OTLP reference.

Error responses

Status	Cause
`400`	The request body is empty or the payload could not be parsed
`401`	The `Authorization` header is missing or does not contain a bearer API key
`403`	The bearer key is not a valid ingest key (unknown or revoked key)
`404`	The target index no longer exists
`413`	A proxy or upstream service rejected the request as too large (Rootprint sets no body-size limit of its own)
`500`	Rootprint encountered an internal error
`503`	Rootprint could not reach Quickwit, or Quickwit is unhealthy or unavailable

App-level error responses include a JSON body with an error object:

{
  "error": {
    "code": "INGEST_INVALID_TOKEN",
    "message": "Invalid ingest token",
    "statusCode": 403,
    "requestId": "req_abc123"
  }
}

Overview

Log ingest API

Log explorer API

Traces API

Service health API

Saved views

Share links

Index management API

Index sources API

API key administration

Service accounts

Personal API keys

User and invite API

Authentication API

Auth settings API

System monitoring API

POST /api/ingest/ndjson - ingest log events

Endpoint

Authentication

Request body

Example request

Response

Error responses

​Endpoint

​Authentication

​Request body

​Example request

​Response

​Error responses

Endpoint

Authentication

Request body

Example request

Response

Error responses