You can access the HTTP Security Headers Checker programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in Integrations settings in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

{
  "openapi": "3.0.1",
  "info": {
    "version": "0.1",
    "x-build-id": "rJsssQHsBCEFkMEc4"
  },
  "servers": [
    {
      "url": "https://api.apify.com/v2"
    }
  ],
  "paths": {
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      "post": {
        "operationId": "run-sync-get-dataset-items-eliai-security-headers-checker",
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            "name": "token",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string"
            },
            "description": "Enter your Apify token here"
          }
        ],
        "responses": {
          "200": {
            "description": "OK"
          }
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    "/acts/eliai~security-headers-checker/runs": {
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        "operationId": "runs-sync-eliai-security-headers-checker",
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        "operationId": "run-sync-eliai-security-headers-checker",
        "x-openai-isConsequential": false,
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  "components": {
    "schemas": {
      "inputSchema": {
        "type": "object",
        "properties": {
          "url": {
            "title": "URL",
            "type": "string",
            "description": "A URL to check security headers for (e.g. example.com)"
          },
          "urls": {
            "title": "URLs (bulk)",
            "type": "array",
            "description": "Multiple URLs to check in one run",
            "items": {
              "type": "string"
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          "maxUrls": {
            "title": "Max URLs",
            "type": "integer",
            "description": "Safety cap on URLs processed",
            "default": 25
          }
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      "runsResponseSchema": {
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        "properties": {
          "data": {
            "type": "object",
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                "type": "string"
              },
              "userId": {
                "type": "string"
              },
              "startedAt": {
                "type": "string",
                "format": "date-time",
                "example": "2025-01-08T00:00:00.000Z"
              },
              "finishedAt": {
                "type": "string",
                "format": "date-time",
                "example": "2025-01-08T00:00:00.000Z"
              },
              "status": {
                "type": "string",
                "example": "READY"
              },
              "meta": {
                "type": "object",
                "properties": {
                  "origin": {
                    "type": "string",
                    "example": "API"
                  },
                  "userAgent": {
                    "type": "string"
                  }
                }
              },
              "stats": {
                "type": "object",
                "properties": {
                  "inputBodyLen": {
                    "type": "integer",
                    "example": 2000
                  },
                  "rebootCount": {
                    "type": "integer",
                    "example": 0
                  },
                  "restartCount": {
                    "type": "integer",
                    "example": 0
                  },
                  "resurrectCount": {
                    "type": "integer",
                    "example": 0
                  },
                  "computeUnits": {
                    "type": "integer",
                    "example": 0
                  }
                }
              },
              "options": {
                "type": "object",
                "properties": {
                  "build": {
                    "type": "string",
                    "example": "latest"
                  },
                  "timeoutSecs": {
                    "type": "integer",
                    "example": 300
                  },
                  "memoryMbytes": {
                    "type": "integer",
                    "example": 1024
                  },
                  "diskMbytes": {
                    "type": "integer",
                    "example": 2048
                  }
                }
              },
              "buildId": {
                "type": "string"
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              "defaultKeyValueStoreId": {
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              },
              "defaultDatasetId": {
                "type": "string"
              },
              "defaultRequestQueueId": {
                "type": "string"
              },
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                "type": "string",
                "example": "1.0.0"
              },
              "containerUrl": {
                "type": "string"
              },
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                "type": "object",
                "properties": {
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                  },
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                  },
                  "DATASET_WRITES": {
                    "type": "integer",
                    "example": 0
                  },
                  "KEY_VALUE_STORE_READS": {
                    "type": "integer",
                    "example": 0
                  },
                  "KEY_VALUE_STORE_WRITES": {
                    "type": "integer",
                    "example": 1
                  },
                  "KEY_VALUE_STORE_LISTS": {
                    "type": "integer",
                    "example": 0
                  },
                  "REQUEST_QUEUE_READS": {
                    "type": "integer",
                    "example": 0
                  },
                  "REQUEST_QUEUE_WRITES": {
                    "type": "integer",
                    "example": 0
                  },
                  "DATA_TRANSFER_INTERNAL_GBYTES": {
                    "type": "integer",
                    "example": 0
                  },
                  "DATA_TRANSFER_EXTERNAL_GBYTES": {
                    "type": "integer",
                    "example": 0
                  },
                  "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                    "type": "integer",
                    "example": 0
                  },
                  "PROXY_SERPS": {
                    "type": "integer",
                    "example": 0
                  }
                }
              },
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                "type": "number",
                "example": 0.00005
              },
              "usageUsd": {
                "type": "object",
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                  },
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                  "KEY_VALUE_STORE_LISTS": {
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                  },
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                  },
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                  },
                  "DATA_TRANSFER_EXTERNAL_GBYTES": {
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                    "example": 0
                  },
                  "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                    "type": "integer",
                    "example": 0
                  },
                  "PROXY_SERPS": {
                    "type": "integer",
                    "example": 0
                  }
                }
              }
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      }
    }
  }
}

HTTP Security Headers Checker - HSTS, CSP, A-F Grade OpenAPI definition

OpenAPI is a standard for designing and describing RESTful APIs, allowing developers to define API structure, endpoints, and data formats in a machine-readable way. It simplifies API development, integration, and documentation.

OpenAPI is effective when used with AI agents and GPTs by standardizing how these systems interact with various APIs, for reliable integrations and efficient communication.

By defining machine-readable API specifications, OpenAPI allows AI models like GPTs to understand and use varied data sources, improving accuracy. This accelerates development, reduces errors, and provides context-aware responses, making OpenAPI a core component for AI applications.

You can download the OpenAPI definitions for HTTP Security Headers Checker from the options below:

OpenAPI.json

If you’d like to learn more about how OpenAPI powers GPTs, read our blog post.

You can also check out our other API clients:

HTTP Security Headers Checker API in Python

HTTP Security Headers Checker API in JavaScript

HTTP Security Headers Checker API through CLI

HTTP Security Headers Checker API

Security Headers Checker API - HTTP Security Scanner

pink_comic/security-headers-checker

Security Headers Checker API for bulk HTTP security scans. Audit HSTS, CSP, X-Frame-Options, referrer and permissions policies, missing headers, website hardening gaps, and compliance posture. Returns grades, findings, and header evidence for security audits.

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Security Headers Checker

pillowy_travel/security-headers-checker

Analyze HTTP security headers of websites and generate a security score. Detect missing headers like CSP, HSTS, X-Frame-Options, and more. Perfect for web security audits, vulnerability checks, learning, and automated monitoring.

SAHIL KUMAR

HTTP Headers Security Audit

techionik9993/http-headers-security-audit

Audit public websites for important HTTP security headers and export practical risk scores, missing headers, and improvement notes for security, SEO, and QA workflows.

Techionik

HTTP Security Headers Analyzer

andok/security-headers-analyzer

Audit HTTP response headers (CSP, HSTS, X-Frame-Options) to verify web application security and compliance standards.

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🛡️ Security Headers Checker

taroyamada/security-headers-checker

Audit HTTP security headers in bulk across hundreds of websites. Extract OWASP compliance grades and detect missing HSTS or CSP directives instantly.

naoki anzai

Security Headers Checker - Audit CSP, HSTS, XFO and more

scrappy_garden/security-headers-checker

Check common HTTP security headers for one or more URLs (Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP/COEP/CORP). Useful for quick security hardening audits.

Bikram Adhikari

HTTP Security Headers Analyzer — CSP, HSTS Grader

technicaldost/http-security-headers

Technical Dost Solutions

HTTP Security Headers Audit

mbeato/apimesh-security-headers

Audit 10 HTTP security headers with A+ to F grading. Checks CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and more.

Maximus Beato

Bulk HTTP Security Headers Analyzer — CSP, HSTS & Score

logiover/bulk-http-security-headers

Analyze HTTP security headers for thousands of URLs. Checks CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy and more. Returns pass/fail per header plus a numeric security score. No API key, export to CSV/JSON. Ideal for security audits and compliance scanning.

Logiover

Security Headers Checker — OWASP Audit & Grading

accurate_pouch/security-headers

Audit 12 HTTP security headers (HSTS, CSP, X-Frame-Options, Referrer-Policy, Permissions-Policy, COOP, CORP, COEP). A-F grading, actionable recommendations. 5 URLs free.