> ## Documentation Index
> Fetch the complete documentation index at: https://arize-ax.mintlify.site/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# Set labels on a prompt version
> Set (replace) all labels on a prompt version. This is an idempotent
operation. If a label already exists on another version of the same
prompt, it will be moved to this version.
Labels not included in the request will be removed from this version.
This endpoint is in beta, read more [here](https://arize.com/docs/ax/rest-reference#api-version-stages).
## OpenAPI
````yaml https://api.arize.com/v2/spec.yaml put /v2/prompt-versions/{version_id}/labels
openapi: 3.0.3
info:
title: Arize REST API
version: 2.0.0
description: |
API specification for the backend data server. The API is hosted globally
at https://api.arize.com/v2 or in your own environment.
license:
name: Apache-2.0
url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- description: Global
url: https://api.arize.com
- description: Regional
url: https://api.{region}.arize.com
variables:
region:
default: eu-west-1a
enum:
- eu-west-1a
- ca-central-1a
- description: Custom Host
url: https://{host}
variables:
host:
default: api.arize.com
security:
- bearerAuth: []
tags:
- name: AI Integrations
description: |
AI integrations configure access to external LLM providers (e.g. OpenAI,
Azure OpenAI, AWS Bedrock, Vertex AI). Integrations can be scoped to the
entire account, a specific organization, or a specific space.
- name: Annotation Configs
description: >
Annotation configs allow you to define consistent annotation schemas that
can be reused across your workspace, ensuring evaluations are structured
and
comparable over time.
- name: Annotation Queues
description: >
Annotation queues help you organize and manage human evaluation workflows.
Use queues to assign spans or examples to annotators for review and
labeling.
- name: API Keys
description: >
API keys are used to authenticate requests to the Arize API. List your
keys
to view metadata; the raw secret is never returned after creation.
- name: Datasets
description: |
Datasets are structured, version-controlled example collections you use to
run, evaluate, and track LLM experiments.
- name: Evaluators
description: >
Evaluators are reusable evaluation configurations used to assess the
quality
of LLM outputs. They can be template-based (using LLM judges) or
code-based.
- name: Experiments
description: >
Experiments let you systematically test prompt/model changes using
datasets,
tasks, and evaluators.
- name: Integrations
description: >
Integrations configure access to external LLM providers (e.g. OpenAI,
Azure OpenAI, AWS Bedrock, Vertex AI), notifications services (e.g.
PagerDuty, Slack), and
your own agents. Integrations can be scoped to the entire account, a
specific
organization, or a specific space.
- name: Organizations
description: >
Organizations are top-level containers within an Arize AX account for
grouping spaces.
- name: Projects
description: |
Projects represent LLM applications being monitored in Arize where you can
observe traces and spans.
- name: Prompts
description: >
Prompts are reusable, versioned templates for LLM interactions. Use
prompts
to standardize and manage how you interact with LLMs across your
application.
- name: Resource Restrictions
description: |
Endpoints for restricting and unrestricting resources (projects, models).
- name: Role Bindings
description: |
Role bindings assign a role to a user on a resource. REST currently
supports space- and project-scoped bindings.
- name: Roles
description: >
Roles define sets of permissions that can be assigned to users within an
account. Create custom roles to tailor access control to your team's
needs.
- name: Spaces
description: >
Spaces are containers within an organization for grouping related
projects,
datasets, and experiments, enabling collaboration or isolated
experimentation
with role-based access control.
- name: Spans
description: |
Spans represent individual operations within a trace. A span captures the
timing, status, and attributes of a single operation in your application.
- name: Tasks
description: |
Tasks are configurable units of work that tie one or more evaluators to a
data source (project or dataset). Use tasks to automate evaluation of LLM
outputs, with support for continuous evaluation and backfill runs.
- name: Users
description: >
Users represent members of an account. The Users endpoints allow creating,
listing, updating (display name), and removing users from the account
programmatically.
paths:
/v2/prompt-versions/{version_id}/labels:
put:
tags:
- Prompts
summary: Set labels on a prompt version
description: >
Set (replace) all labels on a prompt version. This is an idempotent
operation. If a label already exists on another version of the same
prompt, it will be moved to this version.
Labels not included in the request will be removed from this version.
This endpoint is in beta, read more
[here](https://arize.com/docs/ax/rest-reference#api-version-stages).
operationId: prompt_version_labels_set
parameters:
- $ref: '#/components/parameters/PromptVersionIdPathParam'
requestBody:
$ref: '#/components/requestBodies/SetPromptVersionLabelsRequestBody'
responses:
'200':
$ref: '#/components/responses/PromptVersionLabelsSet'
'400':
$ref: '#/components/responses/BadRequest'
'401':
$ref: '#/components/responses/Unauthorized'
'403':
$ref: '#/components/responses/Forbidden'
'404':
$ref: '#/components/responses/NotFound'
'422':
$ref: '#/components/responses/UnprocessableEntity'
'429':
$ref: '#/components/responses/RateLimitExceeded'
components:
parameters:
PromptVersionIdPathParam:
name: version_id
in: path
description: The unique prompt version identifier (base64)
required: true
schema:
$ref: '#/components/schemas/Id'
example: UHJvbXB0VmVyc2lvbjoxMjM0NQ==
requestBodies:
SetPromptVersionLabelsRequestBody:
description: Body containing the labels to set on a prompt version
required: true
content:
application/json:
schema:
type: object
required:
- labels
properties:
labels:
type: array
items:
type: string
minItems: 0
description: >
Array of label names to set on the version. Replaces all
existing labels on this version. Pass an empty array to remove
all labels from this version. Labels are unique per prompt — a
label can only be assigned to one version at a time. If a
label in this array is currently assigned to a different
version of the same prompt, it will be moved to this version
automatically (no error is raised).
additionalProperties: false
example:
labels:
- production
- staging
responses:
PromptVersionLabelsSet:
description: Returns the labels set on a prompt version
content:
application/json:
schema:
$ref: '#/components/schemas/PromptVersionLabelsResponse'
example:
labels:
- production
- staging
BadRequest:
description: Invalid request
content:
application/problem+json:
schema:
$ref: '#/components/schemas/Problem'
example:
status: 400
title: Invalid request parameters
detail: The 'name' field is required and must be a non-empty string.
instance: /resource
type: https://arize.com/docs/ax/rest-reference/errors#invalid-request
Unauthorized:
description: Authentication is required
content:
application/problem+json:
schema:
$ref: '#/components/schemas/Problem'
example:
status: 401
title: Authentication required
detail: You must be authenticated to access this resource.
instance: /resource
type: >-
https://arize.com/docs/ax/rest-reference/errors#authentication-required
Forbidden:
description: Insufficient permissions to access this resource
content:
application/problem+json:
schema:
$ref: '#/components/schemas/Problem'
example:
status: 403
title: Access forbidden
detail: You do not have permission to access this resource.
instance: /resource/12345
type: https://arize.com/docs/ax/rest-reference/errors#access-forbidden
NotFound:
description: Not found
content:
application/problem+json:
schema:
$ref: '#/components/schemas/Problem'
example:
status: 404
title: Resource not found
detail: The requested resource with ID '12345' was not found.
instance: /resource/12345
type: https://arize.com/docs/ax/rest-reference/errors#resource-not-found
UnprocessableEntity:
description: Unprocessable entity
content:
application/problem+json:
schema:
$ref: '#/components/schemas/Problem'
example:
status: 422
title: Unprocessable Entity
detail: One or more fields failed validation.
instance: /resource/12345
type: >-
https://arize.com/docs/ax/rest-reference/errors#unprocessable-entity
RateLimitExceeded:
description: Rate limit exceeded
headers:
Retry-After:
description: |
When throttled (429), how long to wait before retrying. Value is
either a delta-seconds integer.
schema:
type: integer
minimum: 0
example: 42
content:
application/problem+json:
schema:
$ref: '#/components/schemas/Problem'
example:
status: 429
title: Rate limit exceeded
detail: >-
You have exceeded the allowed number of requests. Please try again
later.
instance: /resource
type: >-
https://arize.com/docs/ax/rest-reference/errors#rate-limit-exceeded
schemas:
Id:
type: string
description: A universally unique identifier (base64-encoded opaque string).
example: RW50aXR5OjEyMzQ1
PromptVersionLabelsResponse:
type: object
required:
- labels
properties:
labels:
type: array
items:
type: string
description: Label names on the version
additionalProperties: false
Problem:
type: object
description: RFC 9457 Problem Details
properties:
title:
type: string
description: A short, human-readable summary of the problem type
status:
type: integer
description: >-
The HTTP status code generated by the origin server for this
occurrence of the problem
type:
type: string
format: uri-reference
description: A URI reference that identifies the problem type
detail:
type: string
description: >-
A human-readable explanation specific to this occurrence of the
problem
instance:
type: string
format: uri-reference
description: >-
A URI reference that identifies the specific occurrence of the
problem
required:
- title
- status
additionalProperties: false
securitySchemes:
bearerAuth:
type: http
scheme: bearer
bearerFormat:
description: >
Most Arize AI endpoints require authentication. For those endpoints that
require authentication, include your API key in the request header using
the format
``` Authorization: Bearer
```
````