Quartermaster Lens

by Dev · quartermaster.surewhynot.app · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Read-only toolbar tool to test-drive the x402 API: inspect endpoints, search the Bazaar, preview 402 challenges. Not a wallet.

Users

−1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#366K

#276K among extensions

Version

1.1.2

updated 17 Jul 2026

Users

monthly, 3 months

Latest, 15 Oct 2026: 2 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 months

Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Quartermaster Lens

Quartermaster Lens is a read-only companion for the x402 pay-per-call ecosystem. It lets a developer test-drive the Quartermaster API — and any x402 endpoint on the web — right from the toolbar, with no wallet and no risk. Five tabs: • Ask — Type a goal in plain English. The x402 Router shows which tool it would run. Free preview — nothing is paid. • Inspect — Point it at any page and get a scorecard: is it x402-payable? Price, network, asset, pay-to, and what's wrong with the challenge. One click opens the full scored report. • Bazaar — Search the live Coinbase x402 Bazaar and filter by name or URL. • Free tools — Call Quartermaster's free endpoints (hash, UUID, time, IP, x402 test vector). Real results, no payment. • Preview 402 — Request a paid tool WITHOUT paying, decode the exact payment challenge, and copy a ready-to-run snippet to pay it yourself. It is not a wallet: no private keys, no seed phrases, no signing, no custody, no automatic payments. Every action is a plain read-only request. No content scripts. No analytics, no tracking, no data collection. Learn more: https://quartermaster.surewhynot.app/lens