Protocol tools

Client

Reference and parsing helpers for HTTP, addressing, metadata, and developer ergonomics—open a card for the dedicated route.

How this hub is organized

HTTP references, CIDR math, MIME and port tables, User-Agent parsing, Open Graph previews, and semver checks each live on their own route—this index only routes you to the right workspace.

Browse protocol utilities

Cards follow the home catalog order for this category.

Nearby workflows on Toolcore

  • CIDR calculator — for mask, network, and host bounds on one prefix.
  • HTTP status codes — when responses need a quick reason-phrase lookup.
  • MIME types — to map extensions and Content-Type before you upload files.
  • SemVer compare — when release tags sit beside API compatibility checks.

Common use cases

  • Use HTTP status and headers when documenting APIs or debugging responses without leaving the browser.
  • Open CIDR for a single network’s math; use IPv4 subnet table when you need every equal child block under a parent prefix, IPv6 expand & compress for one IPv6 literal, or MAC / EUI to normalize hardware addresses from logs.
  • Use MIME types or IANA ports when mapping extensions, Content-Type values, or service names.
  • Try Open Graph or robots/sitemap preview when checking marketing HTML or crawler rules.

Common mistakes to avoid

  • Treating reference tables as runtime authority

    Tables summarize common cases; your server, CDN, or framework may add nuances—verify in environment-specific docs.

FAQ

Does the pseudo-CLI upload commands?

It navigates to other Toolcore routes with optional prefills; it does not execute shell on a remote host.

Where is JSON formatting?

Use the JSON hub at /tools/json for pretty-print, validation, and conversions.