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PromptLayer Spans & Traces API

Ingest spans and manage traces for LLM observability.

PromptLayer Spans & Traces API is one of 4 APIs that PromptLayer publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Spans & Traces. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 4 operations across 4 paths, and defines 7 schemas. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against a single base URL, https://api.promptlayer.com.

4 operations 4 paths 7 schemas 1 GET3 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Base URL
https://api.promptlayer.com
Authentication
API Key
Terms of Service
Resource Areas
1

Authentication & Security 1

PromptLayer Spans & Traces API declares 1 security scheme for authenticating requests. An API key is passed in the header as X-API-KEY (ApiKeyAuth). By default, every request must be authenticated.

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 1 GET, 3 POST. Each is listed below with its method, path, parameters, and response codes.

Spans & Traces 4

Ingest spans and manage traces for LLM observability.

POST
/spans-bulk
Ingest spans in bulk
createSpansBulk body → 201401422
POST
/otlp/v1/traces
Ingest OTLP traces
ingestOtlpTraces body → 200401
GET
/traces/{id}
Get a trace
getTrace 1 param → 200401404
POST
/traces/{id}/close
Close a trace
closeTrace 1 param → 200401404

Schemas 7

The contract defines 7 schemas that model the data the API accepts and returns. The most detailed are LogRequest (17 properties), Span (10 properties), SpansBulkResponse (6 properties), Trace (4 properties). Each schema is shown below with its type and property counts.

SuccessMessage
object
2 properties
PromptBlueprint
object
Prompt Blueprint payload, either a chat prompt (messages array) or a completion prompt (content string). Provider-agnostic representation.
SpansBulkResponse
object
6 properties
LogRequest
object
17 properties 6 required
SpansBulkRequest
object
2 properties 1 required
Span
object
10 properties
Trace
object
4 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

promptlayer-spans-traces-api-openapi.yml Raw ↑

Other APIs PromptLayer publishes across the network.

PromptLayer Evaluations & Datasets API
PromptLayer Logging & Tracking API
PromptLayer Prompt Registry API
Where this information came from

This is an independent, third-party profile of PromptLayer Spans & Traces API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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