Skip to content
Gridlode
LiveWeb pages and crawling1 credit / request

HTTP Headers & Security Check API

The HTTP response headers of any URL with the full redirect chain (status and timing of every hop), compression, caching and CDN details, and a security-headers grade (HSTS, CSP, clickjacking, MIME sniffing, Referrer-Policy, Permissions-Policy, COOP/CORP) with a 0-100 score, an A-F grade and plain-English findings. Responses with HTTP 401/403/429 or 5xx are returned but not charged.

GEThttps://api.gridlode.com/v1/url/headers

Try it live

Try . Free, no account needed.

Parameters

NameTypeDescription
urlrequiredstringPublic http(s) URL to request.
max_ageintegerAccept a cached answer up to this many seconds old, billed at 50%. Default 0 (always fresh).

Response fields

    Code

    curl "https://api.gridlode.com/v1/url/headers?url=https%3A%2F%2Fexample.com%2F" \
      -H "Authorization: Bearer $GRIDLODE_KEY"
    1 credit per request
    One credit is $0.001 on the smallest pack, from $0.0003 on enterprise plans.
    Half price for cached data
    Cached for up to 1 h. Pass max_age to use it.
    Failed requests are free
    Blocks, timeouts and target errors never cost credits.

    Market reference: TabAPI HTTP Headers / Security Headers: 1 credit ($1.00/1k).

    Questions

    How much does the HTTP Headers & Security Check API cost?

    1 credit per request. One credit costs $0.001 on the smallest pack and as little as $0.0003 on enterprise plans. Cached answers cost half and failed calls are free.

    Web pages and crawling
    All 13 in Web pages and crawling · 13 live
    Live

    URL to Markdown

    The main content of a web page as clean Markdown (boilerplate, navigation and ads removed) with title, description, author, publish date and language

    1 credit / requestTry freeDocs
    Live

    Website Crawler (Markdown for RAG)

    Crawl a website from a start URL (and optionally its XML sitemap) and get every page back as clean Markdown with title, description, language, word…

    1 credit / pageDocs
    Live

    Screenshot

    A screenshot of any public web page, rendered in real Chrome with JavaScript

    2 credits / requestTry freeDocs
    Live

    Page HTML

    The raw HTML of any public web page with final URL, status code, redirect chain and key headers

    1 credit / requestTry freeDocs
    Live

    Broken Link Checker

    Crawl a website and check every internal and external link for 404s, server errors, timeouts and redirect chains

    1 credit / pageTry freeDocs