Tools / x402 tools
USDC Amount Normalizer $0.001 / call
Convert USDC between atomic and human units.
GET /v1/x402/price-normalizeConverts a USDC amount between atomic units (what x402 challenges use) and human decimals, in either direction. Pure math, no network call.
Parameters
amount required | Amount to convert |
decimals | Token decimals (USDC is 6) |
direction | to-human (default) or to-atomic |
Example
macOS / Linuxcurl -s "https://quartermaster.surewhynot.app/v1/x402/price-normalize?amount=1000&decimals=6&direction=to-human"curl.exe -s "https://quartermaster.surewhynot.app/v1/x402/price-normalize?amount=1000&decimals=6&direction=to-human"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: $0.001 per call.
FAQ
Why do I need this?
x402 payment amounts are in atomic units (1000 = $0.001 for USDC). This converts cleanly in both directions so you never fumble the decimals.
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 $0.001 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.