The Moderations API from LLM Gateway — 1 operation(s) for moderations.
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openapi: 3.2.0
info:
version: 1.0.0
title: LLM Gateway Moderations API
description: 'OpenAI-compatible LLM gateway: chat completions, embeddings, images, audio, video, moderation, OCR, rerank, web search and typed decisions across providers with one API key.'
servers:
- url: https://api.llmgateway.io
- url: http://localhost:4001
tags:
- name: Moderations
paths:
/v1/moderations:
post:
operationId: v1_moderations
summary: Moderations
description: Classify text or multimodal inputs with OpenAI moderation.
security:
- bearerAuth: []
requestBody:
content:
application/json:
schema:
type: object
properties:
input:
anyOf:
- type: string
description: Plain text input to classify.
example: I want to harm someone.
- type: array
items:
type: string
description: Plain text input to classify.
example: I want to harm someone.
- type: array
items:
type: object
properties:
type:
type: string
enum:
- text
- image_url
description: Input item type.
example: text
text:
type: string
description: 'Text content for `type: text` items.'
example: Please review this sentence.
image_url:
type: object
properties:
url:
type: string
description: 'Image URL or data URL for `type: image_url` items.'
example: https://example.com/image.png
required:
- url
description: 'Image payload for `type: image_url` items.'
required:
- type
description: Multimodal moderation input item.
description: Plain text, an array of text strings, or an array of multimodal input items.
example: I want to harm someone.
model:
type: string
default: omni-moderation-latest
description: OpenAI moderation model. Defaults to omni-moderation-latest.
example: omni-moderation-latest
required:
- input
responses:
'200':
description: Moderation response.
headers:
RateLimit-Policy:
schema:
type: string
description: Quota policy as an HTTP Structured Fields list, e.g. "requests";q=60;w=60.
RateLimit:
schema:
type: string
description: Available quota and reset delay, e.g. "requests";r=59;t=60.
RateLimit-Limit:
schema:
type: string
description: Request limit for the current window.
RateLimit-Remaining:
schema:
type: string
description: Requests remaining in the current window.
RateLimit-Reset:
schema:
type: string
description: Seconds until the current window resets.
content:
application/json:
schema:
type: object
properties:
id:
type: string
description: Moderation response ID.
example: modr-123
model:
type: string
description: Moderation model used for the request.
example: openai/openai-moderation
results:
type: array
items:
type: object
properties:
flagged:
type: boolean
description: Whether the input was flagged.
example: true
categories:
type: object
additionalProperties:
type: boolean
description: Category flags returned by the moderation model.
example:
violence: true
self_harm: false
category_scores:
type: object
additionalProperties:
type: number
description: Model confidence scores for each category.
example:
violence: 0.98
self_harm: 0.01
category_applied_input_types:
type: object
additionalProperties:
type: array
items:
type: string
description: Input types that contributed to each category decision.
required:
- flagged
description: One moderation result entry.
description: Moderation results for the submitted input.
description: Moderation response payload.
'400':
description: Invalid request body or parameters.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'401':
description: Missing or invalid API key.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'402':
description: Insufficient credits or plan limits reached.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'403':
description: Forbidden request or upstream response.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'404':
description: Unknown model or upstream not-found response.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'408':
description: Request timeout.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'410':
description: Archived or unavailable project.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'413':
description: Request too large.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'415':
description: Unsupported media type.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'429':
description: Rate limited. Response headers describe only LLMGateway-enforced limits; upstream provider headers are not forwarded. Honor Retry-After when present.
headers:
RateLimit-Policy:
schema:
type: string
description: Quota policy as an HTTP Structured Fields list, e.g. "requests";q=60;w=60.
RateLimit:
schema:
type: string
description: Available quota and reset delay, e.g. "requests";r=59;t=60.
RateLimit-Limit:
schema:
type: string
description: Request limit for the current window.
RateLimit-Remaining:
schema:
type: string
description: Requests remaining in the current window.
RateLimit-Reset:
schema:
type: string
description: Seconds until the current window resets.
Retry-After:
schema:
type: string
description: Seconds to wait before retrying.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'500':
description: Internal server error.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'502':
description: Failed to connect to the upstream provider.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'503':
description: Service unavailable upstream response.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'504':
description: Upstream provider timeout.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
'529':
description: Gateway overloaded.
headers:
Retry-After:
schema:
type: string
description: Seconds to wait before retrying.
content:
application/json:
schema:
$ref: '#/components/schemas/OpenAIError'
tags:
- Moderations
components:
schemas:
OpenAIError:
type: object
properties:
error:
type: object
properties:
message:
type: string
type:
type: string
param:
type:
- string
- 'null'
code:
type:
- string
- 'null'
required:
- message
- type
- param
- code
required:
- error
description: OpenAI-compatible error object.
securitySchemes:
bearerAuth:
type: http
scheme: bearer
description: Bearer token authentication using API keys
externalDocs:
url: https://docs.llmgateway.io
description: LLMGateway Documentation