Tools / Web & data
URL Unshortener $0.002 / call
Expand a short link and show every redirect hop.
GET /v1/unshortenFollows a URL's redirect chain server-side and returns every hop with its status, plus the final destination. Each hop is re-validated so it can never be pointed at a private/internal host — a safe way to see where an untrusted short link actually goes before visiting it.
Parameters
url required | The (possibly shortened) URL to expand |
Example
macOS / Linuxcurl -s "https://quartermaster.surewhynot.app/v1/unshorten?url=https://bit.ly/3xExample"curl.exe -s "https://quartermaster.surewhynot.app/v1/unshorten?url=https://bit.ly/3xExample"Unpaid, these return 402 Payment Required with the payment details in the header (add -i to see them). curl.exe ships with Windows 10+ and works in cmd and both PowerShell versions. To actually pay, use an x402 client (see Connect) or call it as the MCP tool. Cost: $0.002 per call.
FAQ
Why not just follow the link myself?
Short links hide their destination and can chain through trackers or malware. This reveals the full hop chain and final URL without your client ever loading them, and blocks redirects to internal hosts.
How do I pay for this endpoint?
Call it with no payment and you receive HTTP 402 with machine-readable payment requirements. Attach a USDC payment on Base with any x402 client (for example @x402/fetch) and retry — the whole loop is two requests. This call costs $0.002 in USDC.
Do I need an account or API key?
No. There are no accounts, logins, or API keys anywhere in Quartermaster. Payment is per call over the x402 protocol; your wallet is your identity.
Can I call this as an MCP tool instead?
Yes. Quartermaster is also an MCP server at /mcp, so any MCP client (Claude Code, Claude.ai, Cursor) can mount this tool. See /connect for setup.