PromptLayer

aid: promptlayer
url: https://raw.githubusercontent.com/api-evangelist/promptlayer/refs/heads/main/apis.yml
name: PromptLayer
kind: company
description: PromptLayer is a prompt engineering, prompt management, and LLM observability
  platform. Its REST API logs and tracks LLM requests, manages a versioned prompt
  registry with release labels, ingests OpenTelemetry-style spans and traces, and runs
  evaluations and datasets so teams can monitor, debug, and improve their LLM applications.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- AI
- LLM
- Prompt Engineering
- Prompt Management
- Observability
- Evaluation
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: promptlayer:request-logging-tracking
  name: PromptLayer Request Logging & Tracking API
  tags:
  - Logging
  - Tracking
  - Requests
  - Observability
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.promptlayer.com/reference/rest-api-reference
  baseURL: https://api.promptlayer.com
  properties:
  - url: https://docs.promptlayer.com/why-promptlayer/how-it-works
    type: Documentation
  - url: https://docs.promptlayer.com/reference/log-request
    type: APIReference
  - url: openapi/promptlayer-openapi.yml
    type: OpenAPI
  - url: collections/promptlayer.postman_collection.json
    type: PostmanCollection
  description: Logs and tracks LLM requests independent of provider via log-request,
    associates prompt templates and input variables with a request (track-prompt),
    and attaches scores (track-score) and custom metadata (track-metadata) to logged
    requests for monitoring, debugging, and replay.
- aid: promptlayer:prompt-registry-templates
  name: PromptLayer Prompt Registry & Templates API
  tags:
  - Prompt Registry
  - Templates
  - Versioning
  - Release Labels
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.promptlayer.com/features/prompt-registry
  baseURL: https://api.promptlayer.com
  properties:
  - url: https://docs.promptlayer.com/features/prompt-registry
    type: Documentation
  - url: https://docs.promptlayer.com/reference/get-prompt-template
    type: APIReference
  - url: openapi/promptlayer-openapi.yml
    type: OpenAPI
  - url: collections/promptlayer.postman_collection.json
    type: PostmanCollection
  description: Retrieves rendered or raw prompt templates by name or id with version
    and release-label resolution, publishes new prompt template versions, and manages
    release labels so prompts can be versioned and deployed without code changes.
- aid: promptlayer:evaluations-datasets
  name: PromptLayer Evaluations & Datasets API
  tags:
  - Evaluations
  - Datasets
  - Reports
  - Scoring
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.promptlayer.com/features/evaluations/overview
  baseURL: https://api.promptlayer.com
  properties:
  - url: https://docs.promptlayer.com/features/evaluations/overview
    type: Documentation
  - url: https://docs.promptlayer.com/reference/list-evaluations
    type: APIReference
  - url: openapi/promptlayer-openapi.yml
    type: OpenAPI
  - url: collections/promptlayer.postman_collection.json
    type: PostmanCollection
  description: Creates, lists, runs, and scores evaluation reports against datasets,
    and manages evaluation datasets and their rows built from uploaded files or request
    history, enabling systematic, batch testing of prompt and model changes.
- aid: promptlayer:spans-traces
  name: PromptLayer Spans & Traces API
  tags:
  - Tracing
  - Spans
  - OpenTelemetry
  - Workspaces
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.promptlayer.com/features/tracing
  baseURL: https://api.promptlayer.com
  properties:
  - url: https://docs.promptlayer.com/features/tracing
    type: Documentation
  - url: https://docs.promptlayer.com/reference/spans-bulk
    type: APIReference
  - url: openapi/promptlayer-openapi.yml
    type: OpenAPI
  - url: collections/promptlayer.postman_collection.json
    type: PostmanCollection
  description: Ingests OpenTelemetry-style spans in bulk and via an OTLP traces endpoint,
    retrieves and closes traces, and scopes all activity to PromptLayer workspaces
    for end-to-end observability of multi-step LLM and agent workflows.
common:
- type: GitHubOrganization
  url: https://github.com/MagnivOrg
- type: LinkedIn
  url: https://www.linkedin.com/company/promptlayer
- type: Website
  url: https://www.promptlayer.com
- type: Documentation
  url: https://docs.promptlayer.com
- type: Plans
  url: plans/promptlayer-plans-pricing.yml
- type: RateLimits
  url: rate-limits/promptlayer-rate-limits.yml
- type: FinOps
  url: finops/promptlayer-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com