Gridline Tools

Gridline Tools publishes Actors that check web addresses in bulk and return the answer as a table. Paste a list of URLs or domain names, start the run, and download one row per address as CSV, JSON or Excel. The Actors are built for technical SEO audits, site migrations and web operations, where the question is not what is on the page but how the address behaves.

• Each Actor sends a few plain HTTP requests per address and reads technical metadata only: status codes, headers, robots.txt directives or RDAP registry records. Page content is never stored.
• No browsers, no proxies and no logins are involved, so runs are fast and the cost is easy to predict.
• Input and output schemas are published on every Actor page and the output columns stay stable between versions.

Each Actor charges a small start fee per run and a fixed price per checked address. Addresses that fail validation are reported in the output but not billed. There are no platform usage charges on top of the listed prices. The exact figures are on the Pricing tab of each Actor.

• HTTP Status and Headers Checker: status code, full redirect chain, response time, server and security headers for a list of URLs.
• Robots.txt Checker: whether a given crawler may fetch each URL under the site's robots.txt, with the rule that decided.
• RDAP Domain Lookup and Expiry Checker: registrar, registration and expiry dates, statuses, name servers and DNSSEC for a list of domains.
• AI Crawler Access Audit: which AI and search crawlers each site allows or blocks, and whether llms.txt is published.

Use the Issues tab on the Actor page and include the run ID or a shared run link, so the problem can be reproduced. Requests for new checks are welcome and are tracked in the same place.