# HTTP Headers Inspector - All Response Headers & Security (`ninhothedev/http-headers-inspector`) Actor $0.5/1K πŸ”₯ HTTP headers inspector! All response headers, server, cache, CDN & security headers for any URL. No key. JSON, CSV, Excel or API in seconds. Debug & audit any site ⚑ - **URL**: https://apify.com/ninhothedev/http-headers-inspector.md - **Developed by:** [ninhothedev](https://apify.com/ninhothedev) (community) - **Categories:** Developer tools, SEO tools - **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing from $0.50 / 1,000 results This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events. Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event ## What's an Apify Actor? Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows. In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours, and optionally produces a well-defined JSON output, datasets with results, or files in key-value store. In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server. Actors are written with capital "A". ## How to integrate an Actor? If asked about integration, you help developers integrate Actors into their projects. You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready. The best way to integrate Actors is as follows. In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js/docs.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python/docs.md): ```bash pip install apify-client ``` In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md): ````bash # MacOS / Linux curl -fsSL https://apify.com/install-cli.sh | bash # Windows irm https://apify.com/install-cli.ps1 | iex ```bash In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/integrations/mcp.md). If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md). For usage examples, see the [API](#api) section below. For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt). # README ## HTTP Headers Inspector πŸ”Ž **See every HTTP response header for any URL β€” server, cache, content-type, CDN and security headers β€” with no API key.** HTTP Headers Inspector fetches each URL you give it (real Chrome 124 fingerprint, redirects followed) and returns the **complete set of response headers** as a clean, lowercased dictionary, plus the headers that matter most pulled out into their own dedicated fields. Point it at one URL or thousands. No login, no token, no browser automation to configure β€” paste URLs, run, get structured header data. --- ### What you get per URL | Field | Description | |-------|-------------| | `url` / `final_url` | Requested URL and the URL after redirects | | `status_code` | HTTP status (200, 301, 404, …) | | `http_version` | HTTP/1.1, HTTP/2 or HTTP/3 | | `server` | `Server` header value | | `content_type` | `Content-Type` header | | `content_length` | `Content-Length` as an integer | | `cache_control` | `Cache-Control` directives | | `etag` / `last_modified` | Cache validators | | `content_encoding` | gzip / br / deflate | | `powered_by` | `X-Powered-By` (framework/runtime hint) | | `hsts` | Boolean β€” is HSTS (`Strict-Transport-Security`) present? | | `set_cookie_count` | Number of `Set-Cookie` headers | | `cdn` | Detected CDN/edge (Cloudflare, Fastly, CloudFront, Akamai, Vercel…) | | `all_headers` | **Every** response header as a `{lowercased-key: value}` dict | | `source`, `scraped_at` | Provenance and UTC timestamp | --- ### Input ```json { "mode": "inspect", "urls": ["https://github.com", "https://cloudflare.com"], "maxItems": 200 } ```` - **mode** β€” `inspect` (fetch URLs β†’ header objects). - **urls** β€” list of URLs. Bare domains are auto-prefixed with `https://`. - **maxItems** β€” cap on URLs processed per run (default 200, max 2000). *** ### Example output ```json { "url": "https://github.com", "final_url": "https://github.com/", "status_code": 200, "http_version": "HTTP/2", "server": "github.com", "content_type": "text/html; charset=utf-8", "cache_control": "max-age=0, private, must-revalidate", "hsts": true, "set_cookie_count": 2, "cdn": "github", "all_headers": { "date": "...", "content-type": "text/html; charset=utf-8", "strict-transport-security": "max-age=..." }, "source": "http-headers", "scraped_at": "2026-07-24T00:00:00+00:00" } ``` *** ### Use cases - **Tech audits** β€” fingerprint the server, framework (`x-powered-by`) and HTTP version across a list of sites. - **CDN & cache debugging** β€” check `cache-control`, `etag`, `x-cache`, `cf-cache-status` and which CDN is in front of each origin. - **Security review** β€” confirm HSTS is set, spot missing security headers, and audit `set-cookie` counts at scale. - **Dev QA** β€” verify deploys return the expected status, content-type and caching headers before and after a release. *** ### Pricing Runs on Apify's pay-per-usage. Inspecting headers is a single lightweight request per URL, so typical cost is about **~$0.5 per 1,000 URLs** depending on response sizes and your plan. No third-party API key required. *** ### Related Actors by ninhothedev - [Security Headers Checker](https://apify.com/ninhothedev/security-headers-checker) β€” grade a site's security header posture. - [Website Uptime Monitor](https://apify.com/ninhothedev/website-uptime-monitor) β€” scheduled up/down checks. - [Redirect Chain Tracer](https://apify.com/ninhothedev/redirect-chain-tracer) β€” follow and map full redirect hops. - [Website Tech Stack Detector](https://apify.com/ninhothedev/website-tech-stack-detector) β€” identify frameworks, servers and analytics. *** ### Notes - Uses `curl_cffi` with Chrome 124 impersonation and falls back to `urllib` if needed. - Every field is nullable; failed fetches return a row with an `error` message rather than crashing the run. - Respect target sites' terms of service and robots policies when inspecting at scale. # Actor input Schema ## `mode` (type: `string`): What the Actor does. 'inspect' fetches each URL and returns its full response-header set plus extracted key headers. Currently the only supported mode. ## `urls` (type: `array`): List of URLs to inspect. Each is fetched with a GET request (Chrome 124 fingerprint, redirects followed) and its response headers are returned. Bare domains are auto-prefixed with https://. ## `maxItems` (type: `integer`): Maximum number of URLs to process this run. Extra URLs beyond this cap are ignored. Keeps runs bounded and predictable. ## Actor input object example ```json { "mode": "inspect", "urls": [ "https://github.com", "https://cloudflare.com" ], "maxItems": 200 } ``` # API You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup. ## JavaScript example ```javascript import { ApifyClient } from 'apify-client'; // Initialize the ApifyClient with your Apify API token // Replace the '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = { "urls": [ "https://github.com", "https://cloudflare.com" ] }; // Run the Actor and wait for it to finish const run = await client.actor("ninhothedev/http-headers-inspector").call(input); // Fetch and print Actor results from the run's dataset (if any) console.log('Results from dataset'); console.log(`πŸ’Ύ Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`); const { items } = await client.dataset(run.defaultDatasetId).listItems(); items.forEach((item) => { console.dir(item); }); // πŸ“š Want to learn more πŸ“–? Go to β†’ https://docs.apify.com/api/client/js/docs ``` ## Python example ```python from apify_client import ApifyClient # Initialize the ApifyClient with your Apify API token # Replace '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = { "urls": [ "https://github.com", "https://cloudflare.com", ] } # Run the Actor and wait for it to finish run = client.actor("ninhothedev/http-headers-inspector").call(run_input=run_input) # Fetch and print Actor results from the run's dataset (if there are any) print("πŸ’Ύ Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"]) for item in client.dataset(run["defaultDatasetId"]).iterate_items(): print(item) # πŸ“š Want to learn more πŸ“–? Go to β†’ https://docs.apify.com/api/client/python/docs/quick-start ``` ## CLI example ```bash echo '{ "urls": [ "https://github.com", "https://cloudflare.com" ] }' | apify call ninhothedev/http-headers-inspector --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=ninhothedev/http-headers-inspector", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "HTTP Headers Inspector - All Response Headers & Security", "description": "$0.5/1K πŸ”₯ HTTP headers inspector! All response headers, server, cache, CDN & security headers for any URL. No key. JSON, CSV, Excel or API in seconds. Debug & audit any site ⚑", "version": "0.1", "x-build-id": "2g4VbWq6AvVcse1WY" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/ninhothedev~http-headers-inspector/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-ninhothedev-http-headers-inspector", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/ninhothedev~http-headers-inspector/runs": { "post": { "operationId": "runs-sync-ninhothedev-http-headers-inspector", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/ninhothedev~http-headers-inspector/run-sync": { "post": { "operationId": "run-sync-ninhothedev-http-headers-inspector", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "required": [ "urls" ], "properties": { "mode": { "title": "Mode", "enum": [ "inspect" ], "type": "string", "description": "What the Actor does. 'inspect' fetches each URL and returns its full response-header set plus extracted key headers. Currently the only supported mode.", "default": "inspect" }, "urls": { "title": "URLs", "type": "array", "description": "List of URLs to inspect. Each is fetched with a GET request (Chrome 124 fingerprint, redirects followed) and its response headers are returned. Bare domains are auto-prefixed with https://.", "items": { "type": "string" } }, "maxItems": { "title": "Max items", "minimum": 1, "maximum": 2000, "type": "integer", "description": "Maximum number of URLs to process this run. Extra URLs beyond this cap are ignored. Keeps runs bounded and predictable.", "default": 200 } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "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" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "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 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "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 } } } } } } } } } } ```