Information about Trace API data requirements, including:
- Data specifications and max limits
- Required metadata (headers, query parameters)
- Response validation details
This document applies to the Trace API overall. For rules regarding specific data formats, see:
All trace data is sent via HTTPS POST to a Trace API endpoint. We have a few endpoints, depending on your setup:
- Default Trace API endpoint:
- EU data centers:
https://trace-api.eu.newrelic.com/trace/v1(see other EU endpoints).
- Infinite Tracing: when you complete the Trace observer setup, you get a custom YOUR_TRACE_OBSERVER_URL value to use as an endpoint. If you're using an integration that uses the Trace API (for example, these integrations), you must configure that integration with that endpoint. You will also want to adjust the sampling of your tracing service to send us 100% of spans.
- For FedRAMP, see FedRAMP endpoints.
Currently, the Trace API accepts two types of data formats:
zipkin: For reporting Zipkin trace data. Zipkin data must be Zipkin JSON v2.
newrelic: For reporting all other trace data.
The attributes in the table below are restricted in the
newrelic-format JSON (in the
attributes block) and in the
zipkin-format JSON (in the
tags block). Any values with these keys will be omitted:
Unique identifier for the entity that created this span. Generated from
Used for backwards compatibility with data from APM agents.
The attributes in the table below are used internally to identify entities. Any values submitted with these keys in the attributes section of a metric data point may cause undefined behavior such as missing entities in the UI or telemetry not associating with the expected entities. For more information please refer to Entity synthesis:
Unique identifier for the entity associated with this span.
Human-readable name of an entity, often used to identify an entity in the UI.
Used to differentiate between different types of entities, like hosts, applications, etc.
The following table shows the required request metadata for all trace data formats. This metadata can be sent as HTTP headers on an ingest request or, in some cases, provided as query parameters, which may be required for tracing frameworks that don't allow header modification.
Security note: We suggest using headers because query parameters are present in the URL and may be logged before being encrypted and received by New Relic. All data sent as query parameters must be URL-safe.
Required. Must be
Required. The length of the request body in octets (8-bit bytes) unless sent with chunked encoding. This header is generally set by default by the underlying HTTP client sending the data and in most cases should not require any additional effort by the end user.
Required. The Trace API requires a license key. If this is provided as both a header and a query parameter, the values must match.
Required if compressed payload. The value must be
There are only two possible pairings for these values:
Optional - Reserved for future use. The value must be a valid
A response for successfully sending trace data will include a
requestId. For example:
There are two ways success/errors are signaled:
HTTP status code (synchronous). Authentication and request errors will be signaled via HTTP status code.
NrIntegrationErrorevents (asynchronous). Errors with the JSON payload or other semantic errors are asynchronously signaled via
NrIntegrationErrorevents that are stored in the account whose license key is associated with the request. For all errors of this type, the attribute
requestIdwill be the
requestIdfrom the endpoint response.
If you receive a
202 response and don't see an
NrIntegrationError event, your data should be visible in New Relic One's global distributed tracing UI in about a minute. You should be able to find the trace using a standard trace search like:
traceId = TRACE_ID_SENT
Distributed tracing rate limits are set per account and data type. For details about data limits, see New Relic data usage limits and policies.
When you exceed your span rate limit, an
NrIntegrationError event is generated. You can query rate limit messages with this NRQL:
SELECT * FROM NrIntegrationError WHERE newRelicFeature = 'Distributed Tracing' AND category = 'RateLimit' AND rateLimitType = 'SpansPerMinute'
To get a notification when you exceed the limit, you can set up a NRQL alert.
We calculate a rolling 10-minute average based on your span rate limit. This allows for temporary rate bursts, and lets us prioritize keeping and dropping complete traces instead of indiscriminately dropping spans on a per minute limit basis.
In the example below of exceeding the rate, the rate limit is the default 100,000 spans per minute. New Relic allows a burst above 100K for a couple of minutes without downsampling, because the remaining minutes in the 10-minute window averaged under 100K spans/minute. For the previous 10 minutes (8:50 - 9:00) the service received 60,000 spans/minute.
Spans sent to API
Total for past 10 minutes