Browser extension · Chrome and Firefox · early release

Monero on the pages you already use.

XMRadar shows who takes Monero on X, lets you tip them from your own wallet, checks swap sites before you deposit, and copies posts to Nostr.

Download for Chrome Download for Firefox

Free and open source. Holds no keys and no funds.

Swap safety · receipts and letters

Check the swap before you send.

On a swap order page, XMRadar checks the exchange's signed receipt or letter of guarantee against the deposit address the page shows, keeps a copy for disputes, and shows the site's grade on xmr.club.

Download for Chrome Download for Firefox

Free and open source. Holds no keys and no funds.

example.swap order

Send 0.5 XMR to

8sB7dgX9Lv4DfMJfv9Jb15ryPf1pVzvAgW982E1YtVfQkjZEoRGyH1Juxy3DVLfATCWEmGyfTdT9XMopGPNT6EUnfAqScva

Letter ✓

Signed with the operator's key from xmr.club's list. The deposit address matches. Saved in this browser.

Bexample.swapgrade on xmr.club

Address not in the signed letterdon't send

What it does

01 · X · NKIP-0002

Tip badges

An XMR badge on X for people who published a Monero address on Nostr or xmr.bio. Click it to tip from your own wallet; a Xap records the tip on Nostr. Totals separate tips the recipient confirmed from ones that are only claimed.

ɱ 0.004 ✓+0.002 claimed

02 · NKIP-0001 · letters of guarantee

Swap guard

On an exchange's order page, XMRadar checks the signed NKIP-0001 receipt, or the operator's letter of guarantee (PGP or MistProof), against the addresses on the page and in what you copy. A verified copy is saved in your browser for disputes. The toolbar shows the site's xmr.club grade, with a warning for open incidents, and a lookalike of a listed exchange or wallet gets a warning page before it loads.

Exchange data from xmr.club, licensed CC BY 4.0.

Receipt verifiedexample.swap

Letter verifiedsigned with the operator's listed key

Address doesn't match the receipt

03 · kyc.rip GhostMail

Burner email

A throwaway address in one click for sign-ups. New mail shows up as a notification with the code already pulled out.

qz4r8m@ghostmail.kyc.rip42 min

04 · Nostr

Copy posts to Nostr

Right-click a post on X, Bluesky, Mastodon or any page, or hover it and press Alt+Shift+N. Text, images and up to 5 tags go to your relays, signed by your own Nostr signer. Tags can be suggested by a model on your own computer, or a provider with your own key.

AltShiftN

See it on X

Real screenshots from @XBToshi's profile, with XMRadar installed.

An XMR badge next to the name of anyone who published a Monero address and linked it to their X account.

A post whose action bar has a Monero Xap button showing ~0.0017 — A **Xap** button on each of their posts, with the tips so far (`~` means claimed by the tippers, not yet confirmed).

What it never touches

XMRadar runs in your browser. It has no account and no backend: its own site is asked only for the latest version number. The code is open, so you can check every claim below.

KYC-rip/xmradarRead the source →

✓
No keys, no fundsTips open in your wallet. XMRadar never sends or holds Monero.
✓
Your signer signsNostr events go through your NIP-07 extension, and you approve each one.
✓
No transaction ids in publicTip receipts never include a transaction id, tx key or payment proof.
✓
Discovery is off by defaultLooking up X accounts on relays is opt-in, because relays can see which accounts you view.
✓
The site you visit stays in your browserxmr.club's signed list is downloaded whole, the same file for everyone, and matched on your device, lookalike warnings included.
✓
Receipts and letters stay localChecked and saved in your browser only. A letter is asked for only from the order page's own site, and keys come from xmr.club's signed list, never from the page.
✓
Burner mail stays localGhostMail gets only what the inbox needs (its address and token, and a random proof-of-work seed when it's created), nothing about the page you are on.
✓
The update check carries no IDOnce a day it asks xmradar.app for the latest version number, with no version, ID or page in the request. Like any visit, the site sees your IP address and browser, and that XMRadar is in use. It only tells you; you download and check the new zip yourself. You can switch it off.
✓
Tag suggestions are opt-inOff by default. A local model keeps the post on your computer; a provider gets the post's text and tags only with your own key, which no page can read.

OPEN STANDARDS Built on Non-KYC Improvement Proposals Any wallet, exchange or client can implement them.

NKIP-0001Verifiable deposit receipts→ NKIP-0002Verifiable Monero tips on NostrDraft

Install XMRadar

Not in the Chrome or Firefox stores yet. Download the zip from GitHub Releases, unzip it, and load it from chrome://extensions (Developer mode → Load unpacked), or in Firefox 140+ from about:debugging.

Works with any NIP-07 signer, such as Alby or nos2x, and any Monero wallet that opens monero: links.

Download for Chrome Download for Firefox

Version 0.6.1.7 · release notes

VERIFIABLE BUILDS Every release is built by CI from a public commit The build number comes from the CI run. The same commit builds byte-identical zips on the same OS, Node and zip tool (CI's Ubuntu 24.04 build is the canonical one), and each release is signed with a provenance record.

version0.6.1.7 commitd0bff78 sha-256a389…046b xmradar-0.6.1.7-chrome.zip

gh attestation verify xmradar-0.6.1.7-chrome.zip -R KYC-rip/xmradar All releases and checksums →

Free, open source, no ads, no trackingIf XMRadar is useful to you, a Monero tip keeps it maintained.

ɱ Donate Monero