{"name":"URL Shortener","description":"Shorten any URL into a compact, shareable link. Input: `url` (the URL to shorten), optional `customSlug` (your own vanity slug, 3-64 chars), optional `expiresInHours` (auto-delete after N hours, max 8760 = 1 year). Returns: `shortUrl` (the full short URL), `shortCode` (just the code), `originalUrl` (normalized), `expiresAt` (ISO timestamp or null), `isCustomSlug` (boolean). Visit the short URL (GET) to be redirected (302) to the original. Short codes are 7 random alphanumeric characters (base62, ~3.5 trillion combinations). Click tracking is built in — each redirect increments a counter."}