PromptArmor

PromptArmor Content Check API

Single-call content verdict against the detection engine.

Documentation GitHub OpenAPI

Business capability

Threat Detection & Response Management BC-620.30

Operations 1

POST /v1/check_content Check content for adversarial / injected instructions #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/prompt-armor-content-check-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.2.0
info:
  title: PromptArmor Content Check API
  description: PromptArmor is an LLM application security platform that detects and blocks indirect prompt injection, data exfiltration, phishing, and system manipulation in production AI applications.
  termsOfService: https://www.promptarmor.com/
  contact:
    name: PromptArmor
    url: https://www.promptarmor.com/
  version: '1.0'
servers:
- url: https://api.promptarmor.com
  description: PromptArmor production API
security:
- ApiKeyAuth: []
tags:
- name: Content Check
  description: Single-call content verdict against the detection engine.
paths:
  /v1/check_content:
    post:
      operationId: checkContent
      tags:
      - Content Check
      summary: Check content for adversarial / injected instructions
      description: Submits content (such as untrusted text an LLM is about to summarize or act on) to the PromptArmor detection engine and returns a verdict indicating whether the content matches known threat classes. The response includes a containsInjection boolean.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CheckContentRequest'
      responses:
        '200':
          description: Detection verdict.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CheckContentResponse'
        '401':
          description: Missing or invalid Api-Key.
        '429':
          description: Rate limited.
components:
  schemas:
    CheckContentResponse:
      type: object
      properties:
        containsInjection:
          type: boolean
          description: True when the content matches a known injection / threat class. A detector returning true indicates an issue was found for that detection type.
    CheckContentRequest:
      type: object
      required:
      - content
      properties:
        content:
          type: string
          description: The content to evaluate against the detection engine.
        session_id:
          type: string
          description: Optional session identifier. When supplied, PromptArmor also runs session-based anomaly detection across the session.
        detectors:
          type: array
          description: Optional list of detectors to apply in addition to / instead of the default detectors (data exfiltration, phishing, system manipulation, adversarial instructions).
          items:
            type: string
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Api-Key
      description: PromptArmor API key passed in the Api-Key request header.