Fixed n_signer webserial/webusb sign-in failure: add nostr_ prefix to RPC method names (get_public_key, sign_event, nip04/nip44 encrypt/decrypt) required by upgraded n_signer firmware

build/nostr-lite.js

@@ -8,7 +8,7 @@
  * Two-file architecture:
  * 1. Load nostr.bundle.js (official nostr-tools bundle)
  * 2. Load nostr-lite.js (this file - NOSTR_LOGIN_LITE library with CSS-only themes)
- * Generated on: 2026-05-27T19:17:36.261Z
+ * Generated on: 2026-07-21T23:30:02.044Z
  */
 
 // Verify dependencies are loaded
@@ -436,7 +436,7 @@ class Modal {
     modalContent.appendChild(modalHeader);
     // Add version element in bottom-right corner aligned with modal body
      const versionElement = document.createElement('div');
-     versionElement.textContent = 'v0.1.19';
+     versionElement.textContent = 'v0.1.22';
      versionElement.style.cssText = `
        position: absolute;
        bottom: 8px;
@@ -1663,7 +1663,7 @@ class Modal {
     try {
       // Incremental step 1:
       // chooser + capture + driver open only (no getPublicKey/auth yet).
-      const selectedDevice = await navigator.usb.requestDevice({ filters: [{ vendorId: 0x303a }] });
+      const selectedDevice = await navigator.usb.requestDevice({ filters: [{}] });
       this._nsignerSelectedDevice = selectedDevice;
 
       if (!window.NSignerWebUSB || typeof window.NSignerWebUSB !== 'function') {
@@ -2008,10 +2008,7 @@ class Modal {
 
           if (!driver && canUsb) {
             try {
-              const pairedUsb = await window.NSignerWebUSB.getPairedDevice({
-                vendorId: 0x303a,
-                productId: 0x4001
-              });
+              const pairedUsb = await window.NSignerWebUSB.getPairedDevice();
               if (pairedUsb) {
                 renderConnectingScreen('Reconnecting to paired WebUSB device...');
                 transport = 'webusb';
@@ -2055,7 +2052,7 @@ class Modal {
           } else if (target === 'webusb') {
             renderConnectingScreen('Waiting for WebUSB device selection...');
             try {
-              const selectedDevice = await navigator.usb.requestDevice({ filters: [{ vendorId: 0x303a }] });
+              const selectedDevice = await navigator.usb.requestDevice({ filters: [{}] });
               transport = 'webusb';
               driver = await connectUsbFromDevice(selectedDevice);
             } catch (usbErr) {
@@ -2300,7 +2297,7 @@ class Modal {
           throw new Error('NSignerWebUSB driver missing');
         }
 
-        const selectedDevice = await navigator.usb.requestDevice({ filters: [{ vendorId: 0x303a }] });
+        const selectedDevice = await navigator.usb.requestDevice({ filters: [{}] });
 
         const driver = new window.NSignerWebUSB(selectedDevice, {
           callerSecretKey: caller.secret,
@@ -3364,9 +3361,9 @@ window.addEventListener('load', () => {
 // ======================================
 
 class NSignerWebUSB {
-  // Keep picker broad (vendor-level) so Chromium can show all matching Feather states.
-  // Product-level checks still happen during open()/RPC.
-  static FILTERS = [{ vendorId: 0x303a }];
+  // Keep WebUSB chooser unfiltered so users can select any USB device.
+  // WebUSB requires a non-empty filters array; {} matches all devices.
+  static FILTERS = [{}];
 
   static async requestAndConnect(options = {}) {
     if (!('usb' in navigator)) {
@@ -3385,13 +3382,14 @@ class NSignerWebUSB {
     const devices = await navigator.usb.getDevices();
     if (!devices || devices.length === 0) return null;
 
-    const vendorId = options.vendorId ?? 0x303a;
+    const vendorId = options.vendorId ?? null;
     const productId = options.productId ?? null;
     const serial = options.serialNumber || null;
 
     return devices.find((d) => {
-      const vendorMatch = d.vendorId === vendorId;
-      if (!vendorMatch) return false;
+      if (vendorId !== null && vendorId !== undefined && d.vendorId !== vendorId) {
+        return false;
+      }
 
       if (productId !== null && productId !== undefined && d.productId !== productId) {
         return false;
@@ -3518,43 +3516,43 @@ class NSignerWebUSB {
 
   async getPublicKey() {
     const params = [{ nostr_index: this.nostrIndex }];
-    const resp = await this._rpcCall('get_public_key', params);
+    const resp = await this._rpcCall('nostr_get_public_key', params);
     if (!resp || typeof resp.result !== 'string') {
-      throw new Error('Invalid get_public_key response');
+      throw new Error('Invalid nostr_get_public_key response');
     }
     return resp.result.trim().toLowerCase();
   }
 
   async signEvent(unsignedEvent) {
     const params = [unsignedEvent, { nostr_index: this.nostrIndex }];
-    const resp = await this._rpcCall('sign_event', params);
+    const resp = await this._rpcCall('nostr_sign_event', params);
     if (!resp || typeof resp.result !== 'object') {
-      throw new Error('Invalid sign_event response');
+      throw new Error('Invalid nostr_sign_event response');
     }
     return resp.result;
   }
 
   async nip04Encrypt(peerHex, plaintext) {
-    const resp = await this._rpcCall('nip04_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip04_encrypt response');
+    const resp = await this._rpcCall('nostr_nip04_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip04_encrypt response');
     return resp.result;
   }
 
   async nip04Decrypt(peerHex, ciphertext) {
-    const resp = await this._rpcCall('nip04_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip04_decrypt response');
+    const resp = await this._rpcCall('nostr_nip04_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip04_decrypt response');
     return resp.result;
   }
 
   async nip44Encrypt(peerHex, plaintext) {
-    const resp = await this._rpcCall('nip44_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip44_encrypt response');
+    const resp = await this._rpcCall('nostr_nip44_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip44_encrypt response');
     return resp.result;
   }
 
   async nip44Decrypt(peerHex, ciphertext) {
-    const resp = await this._rpcCall('nip44_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip44_decrypt response');
+    const resp = await this._rpcCall('nostr_nip44_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip44_decrypt response');
     return resp.result;
   }
 
@@ -3727,19 +3725,17 @@ if (typeof window !== 'undefined') {
 // ======================================
 
 class NSignerWebSerial {
-  // CH340 VID:PID 0x1a86:0x7523  (most CYD revisions)
-  // CP2102 VID:PID 0x10c4:0xea60 (some CYD revisions)
-  static FILTERS = [
-    { usbVendorId: 0x1a86, usbProductId: 0x7523 },
-    { usbVendorId: 0x10c4, usbProductId: 0xea60 }
-  ];
+  // Keep Web Serial chooser unfiltered so users can select any serial port.
+  static FILTERS = [];
 
   static async requestAndConnect(options = {}) {
     if (!('serial' in navigator)) {
       throw new Error('Web Serial API not available in this browser (requires Chrome 89+, Edge 89+, or Brave)');
     }
 
-    const port = await navigator.serial.requestPort({ filters: NSignerWebSerial.FILTERS });
+    const port = NSignerWebSerial.FILTERS.length
+      ? await navigator.serial.requestPort({ filters: NSignerWebSerial.FILTERS })
+      : await navigator.serial.requestPort();
     const driver = new NSignerWebSerial(port, options);
     await driver.open();
     return driver;
@@ -3918,43 +3914,43 @@ class NSignerWebSerial {
 
   async getPublicKey() {
     const params = [{ nostr_index: this.nostrIndex }];
-    const resp = await this._rpcCall('get_public_key', params);
+    const resp = await this._rpcCall('nostr_get_public_key', params);
     if (!resp || typeof resp.result !== 'string') {
-      throw new Error('Invalid get_public_key response');
+      throw new Error('Invalid nostr_get_public_key response');
     }
     return resp.result.trim().toLowerCase();
   }
 
   async signEvent(unsignedEvent) {
     const params = [unsignedEvent, { nostr_index: this.nostrIndex }];
-    const resp = await this._rpcCall('sign_event', params);
+    const resp = await this._rpcCall('nostr_sign_event', params);
     if (!resp || typeof resp.result !== 'object') {
-      throw new Error('Invalid sign_event response');
+      throw new Error('Invalid nostr_sign_event response');
     }
     return resp.result;
   }
 
   async nip04Encrypt(peerHex, plaintext) {
-    const resp = await this._rpcCall('nip04_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip04_encrypt response');
+    const resp = await this._rpcCall('nostr_nip04_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip04_encrypt response');
     return resp.result;
   }
 
   async nip04Decrypt(peerHex, ciphertext) {
-    const resp = await this._rpcCall('nip04_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip04_decrypt response');
+    const resp = await this._rpcCall('nostr_nip04_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip04_decrypt response');
     return resp.result;
   }
 
   async nip44Encrypt(peerHex, plaintext) {
-    const resp = await this._rpcCall('nip44_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip44_encrypt response');
+    const resp = await this._rpcCall('nostr_nip44_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip44_encrypt response');
     return resp.result;
   }
 
   async nip44Decrypt(peerHex, ciphertext) {
-    const resp = await this._rpcCall('nip44_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip44_decrypt response');
+    const resp = await this._rpcCall('nostr_nip44_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip44_decrypt response');
     return resp.result;
   }
 
@@ -4170,12 +4166,15 @@ class NSignerWebSerial {
       const vid = matchInfo?.usbVendorId;
       const pid = matchInfo?.usbProductId;
 
-      return ports.find((p) => {
+      // Prefer exact VID/PID match when available, but do not require it.
+      const exact = ports.find((p) => {
         const i = p.getInfo?.() || {};
         if (vid != null && i.usbVendorId !== vid) return false;
         if (pid != null && i.usbProductId !== pid) return false;
         return true;
-      }) || ports[0] || null;
+      });
+
+      return exact || ports[0] || null;
     } catch (_) {
       return null;
     }
@@ -5958,8 +5957,8 @@ class AuthManager {
     }
 
     const paired = await window.NSignerWebUSB.getPairedDevice({
-      vendorId: nsigner.deviceVid ?? 0x303a,
-      productId: nsigner.deviceProductId ?? 0x4001,
+      vendorId: nsigner.deviceVid ?? null,
+      productId: nsigner.deviceProductId ?? null,
       serialNumber: nsigner.deviceSerial || undefined
     });
 

build/nostr.bundle.js

@@ -11146,12 +11146,12 @@ zoo`.split("\n");
     }
     async getPublicKey() {
       if (!this.cachedPubKey) {
-        this.cachedPubKey = await this.sendRequest("get_public_key", []);
+        this.cachedPubKey = await this.sendRequest("nostr_get_public_key", []);
       }
       return this.cachedPubKey;
     }
     async signEvent(event) {
-      let resp = await this.sendRequest("sign_event", [JSON.stringify(event)]);
+      let resp = await this.sendRequest("nostr_sign_event", [JSON.stringify(event)]);
       let signed = JSON.parse(resp);
       if (verifyEvent(signed)) {
         return signed;
@@ -11160,16 +11160,16 @@ zoo`.split("\n");
       }
     }
     async nip04Encrypt(thirdPartyPubkey, plaintext) {
-      return await this.sendRequest("nip04_encrypt", [thirdPartyPubkey, plaintext]);
+      return await this.sendRequest("nostr_nip04_encrypt", [thirdPartyPubkey, plaintext]);
     }
     async nip04Decrypt(thirdPartyPubkey, ciphertext) {
-      return await this.sendRequest("nip04_decrypt", [thirdPartyPubkey, ciphertext]);
+      return await this.sendRequest("nostr_nip04_decrypt", [thirdPartyPubkey, ciphertext]);
     }
     async nip44Encrypt(thirdPartyPubkey, plaintext) {
-      return await this.sendRequest("nip44_encrypt", [thirdPartyPubkey, plaintext]);
+      return await this.sendRequest("nostr_nip44_encrypt", [thirdPartyPubkey, plaintext]);
     }
     async nip44Decrypt(thirdPartyPubkey, ciphertext) {
-      return await this.sendRequest("nip44_decrypt", [thirdPartyPubkey, ciphertext]);
+      return await this.sendRequest("nostr_nip44_decrypt", [thirdPartyPubkey, ciphertext]);
     }
   };
   async function createAccount(bunker, params, username, domain, email, localSecretKey = generateSecretKey()) {

examples/cyd_webserial_demo.html

@@ -249,12 +249,8 @@
     const nip44DecOutEl  = document.getElementById("nip44DecOut");
 
     // ── State ─────────────────────────────────────────────────────────────────
-    // CH340 VID:PID 0x1a86:0x7523  (most CYD revisions)
-    // CP2102 VID:PID 0x10c4:0xea60 (some CYD revisions)
-    const SERIAL_FILTERS = [
-      { usbVendorId: 0x1a86, usbProductId: 0x7523 },
-      { usbVendorId: 0x10c4, usbProductId: 0xea60 }
-    ];
+    // Keep chooser unfiltered so any serial-capable device can be selected.
+    const SERIAL_FILTERS = [];
 
     let port       = null;   // SerialPort
     let writer     = null;   // WritableStreamDefaultWriter
@@ -507,7 +503,9 @@
         throw new Error("Web Serial API not available — use Chrome 89+, Edge 89+, or Brave");
       }
 
-      const initiallySelected = await navigator.serial.requestPort({ filters: SERIAL_FILTERS });
+      const initiallySelected = SERIAL_FILTERS.length
+        ? await navigator.serial.requestPort({ filters: SERIAL_FILTERS })
+        : await navigator.serial.requestPort();
       const selectedInfo = initiallySelected.getInfo?.() || {};
       let lastError = null;
 
@@ -613,7 +611,7 @@
     // ── Pubkey helper ─────────────────────────────────────────────────────────
     async function fetchOwnPubkeyAndFillPeers() {
       const params = [getIndexOptions()];
-      const resp   = await rpcCall("get_public_key", params);
+      const resp   = await rpcCall("nostr_get_public_key", params);
       if (resp && typeof resp.result === "string") {
         ownPubkey = resp.result.trim().toLowerCase();
         pubkeyOutEl.textContent = pretty(resp);
@@ -670,7 +668,7 @@
         };
 
         const params = [unsignedEvent, getIndexOptions()];
-        const resp   = await rpcCall("sign_event", params);
+        const resp   = await rpcCall("nostr_sign_event", params);
         signOutEl.textContent = pretty(resp?.result ?? resp);
       } catch (e) {
         signOutEl.textContent = String(e);
@@ -682,7 +680,7 @@
         const peer   = requirePeerHex(nip04PeerEl.value);
         const msg    = String(nip04MsgEl.value || "");
         const params = [peer, msg, getIndexOptions()];
-        const resp   = await rpcCall("nip04_encrypt", params);
+        const resp   = await rpcCall("nostr_nip04_encrypt", params);
         nip04OutEl.textContent = pretty(resp?.result ?? resp);
         if (resp && typeof resp.result === "string") {
           nip04DecPeerEl.value = peer;
@@ -698,7 +696,7 @@
         const peer       = requirePeerHex(nip04DecPeerEl.value);
         const ciphertext = String(nip04CipherEl.value || "");
         const params     = [peer, ciphertext, getIndexOptions()];
-        const resp       = await rpcCall("nip04_decrypt", params);
+        const resp       = await rpcCall("nostr_nip04_decrypt", params);
         nip04DecOutEl.textContent = requireStringResult(resp, "NIP-04 decrypt");
       } catch (e) {
         nip04DecOutEl.textContent = String(e);
@@ -710,7 +708,7 @@
         const peer   = requirePeerHex(nip44PeerEl.value);
         const msg    = String(nip44MsgEl.value || "");
         const params = [peer, msg, getIndexOptions()];
-        const resp   = await rpcCall("nip44_encrypt", params);
+        const resp   = await rpcCall("nostr_nip44_encrypt", params);
         nip44OutEl.textContent = pretty(resp?.result ?? resp);
         if (resp && typeof resp.result === "string") {
           nip44DecPeerEl.value = peer;
@@ -726,7 +724,7 @@
         const peer       = requirePeerHex(nip44DecPeerEl.value);
         const ciphertext = String(nip44CipherEl.value || "");
         const params     = [peer, ciphertext, getIndexOptions()];
-        const resp       = await rpcCall("nip44_decrypt", params);
+        const resp       = await rpcCall("nostr_nip44_decrypt", params);
         nip44DecOutEl.textContent = requireStringResult(resp, "NIP-44 decrypt");
       } catch (e) {
         nip44DecOutEl.textContent = String(e);

examples/feather_webusb_demo.html

@@ -369,7 +369,7 @@
 
     async function fetchOwnPubkeyAndFillPeers() {
       const params = [getIndexOptions()];
-      const resp = await rpcCall("get_public_key", params, "web-own-pubkey");
+      const resp = await rpcCall("nostr_get_public_key", params, "web-own-pubkey");
       if (resp && typeof resp.result === "string") {
         ownPubkey = resp.result.trim().toLowerCase();
         pubkeyOutEl.textContent = pretty(resp);
@@ -383,7 +383,7 @@
     }
 
     async function connect() {
-      dev = await navigator.usb.requestDevice({ filters: [{ vendorId: 0x303a }] });
+      dev = await navigator.usb.requestDevice({ filters: [{}] });
       await dev.open();
       if (dev.configuration === null) {
         await dev.selectConfiguration(1);
@@ -460,7 +460,7 @@
         };
 
         const params = [unsignedEvent, getIndexOptions()];
-        const resp = await rpcCall("sign_event", params, "web-sign-kind1");
+        const resp = await rpcCall("nostr_sign_event", params, "web-sign-kind1");
         signOutEl.textContent = pretty(resp?.result ?? resp);
       } catch (e) {
         signOutEl.textContent = String(e);
@@ -472,7 +472,7 @@
         const peer = requirePeerHex(nip04PeerEl.value);
         const msg = String(nip04MsgEl.value || "");
         const params = [peer, msg, getIndexOptions()];
-        const resp = await rpcCall("nip04_encrypt", params, "web-nip04-enc");
+        const resp = await rpcCall("nostr_nip04_encrypt", params, "web-nip04-enc");
         nip04OutEl.textContent = pretty(resp?.result ?? resp);
         if (resp && typeof resp.result === "string") {
           nip04DecPeerEl.value = peer;
@@ -488,7 +488,7 @@
         const peer = requirePeerHex(nip04DecPeerEl.value);
         const ciphertext = String(nip04CipherEl.value || "");
         const params = [peer, ciphertext, getIndexOptions()];
-        const resp = await rpcCall("nip04_decrypt", params, "web-nip04-dec");
+        const resp = await rpcCall("nostr_nip04_decrypt", params, "web-nip04-dec");
         nip04DecOutEl.textContent = requireStringResult(resp, "NIP-04 decrypt");
       } catch (e) {
         nip04DecOutEl.textContent = String(e);
@@ -500,7 +500,7 @@
         const peer = requirePeerHex(nip44PeerEl.value);
         const msg = String(nip44MsgEl.value || "");
         const params = [peer, msg, getIndexOptions()];
-        const resp = await rpcCall("nip44_encrypt", params, "web-nip44-enc");
+        const resp = await rpcCall("nostr_nip44_encrypt", params, "web-nip44-enc");
         nip44OutEl.textContent = pretty(resp?.result ?? resp);
         if (resp && typeof resp.result === "string") {
           nip44DecPeerEl.value = peer;
@@ -516,7 +516,7 @@
         const peer = requirePeerHex(nip44DecPeerEl.value);
         const ciphertext = String(nip44CipherEl.value || "");
         const params = [peer, ciphertext, getIndexOptions()];
-        const resp = await rpcCall("nip44_decrypt", params, "web-nip44-dec");
+        const resp = await rpcCall("nostr_nip44_decrypt", params, "web-nip44-dec");
         nip44DecOutEl.textContent = requireStringResult(resp, "NIP-44 decrypt");
       } catch (e) {
         nip44DecOutEl.textContent = String(e);

src/VERSION

@@ -1 +1 @@
-0.1.19
+0.1.22

src/build.js

@@ -2005,8 +2005,8 @@ class AuthManager {
     }
 
     const paired = await window.NSignerWebUSB.getPairedDevice({
-      vendorId: nsigner.deviceVid ?? 0x303a,
-      productId: nsigner.deviceProductId ?? 0x4001,
+      vendorId: nsigner.deviceVid ?? null,
+      productId: nsigner.deviceProductId ?? null,
       serialNumber: nsigner.deviceSerial || undefined
     });
 

src/signers/nsigner-webserial.js

@@ -1,17 +1,15 @@
 class NSignerWebSerial {
-  // CH340 VID:PID 0x1a86:0x7523  (most CYD revisions)
-  // CP2102 VID:PID 0x10c4:0xea60 (some CYD revisions)
-  static FILTERS = [
-    { usbVendorId: 0x1a86, usbProductId: 0x7523 },
-    { usbVendorId: 0x10c4, usbProductId: 0xea60 }
-  ];
+  // Keep Web Serial chooser unfiltered so users can select any serial port.
+  static FILTERS = [];
 
   static async requestAndConnect(options = {}) {
     if (!('serial' in navigator)) {
       throw new Error('Web Serial API not available in this browser (requires Chrome 89+, Edge 89+, or Brave)');
     }
 
-    const port = await navigator.serial.requestPort({ filters: NSignerWebSerial.FILTERS });
+    const port = NSignerWebSerial.FILTERS.length
+      ? await navigator.serial.requestPort({ filters: NSignerWebSerial.FILTERS })
+      : await navigator.serial.requestPort();
     const driver = new NSignerWebSerial(port, options);
     await driver.open();
     return driver;
@@ -190,43 +188,43 @@ class NSignerWebSerial {
 
   async getPublicKey() {
     const params = [{ nostr_index: this.nostrIndex }];
-    const resp = await this._rpcCall('get_public_key', params);
+    const resp = await this._rpcCall('nostr_get_public_key', params);
     if (!resp || typeof resp.result !== 'string') {
-      throw new Error('Invalid get_public_key response');
+      throw new Error('Invalid nostr_get_public_key response');
     }
     return resp.result.trim().toLowerCase();
   }
 
   async signEvent(unsignedEvent) {
     const params = [unsignedEvent, { nostr_index: this.nostrIndex }];
-    const resp = await this._rpcCall('sign_event', params);
+    const resp = await this._rpcCall('nostr_sign_event', params);
     if (!resp || typeof resp.result !== 'object') {
-      throw new Error('Invalid sign_event response');
+      throw new Error('Invalid nostr_sign_event response');
     }
     return resp.result;
   }
 
   async nip04Encrypt(peerHex, plaintext) {
-    const resp = await this._rpcCall('nip04_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip04_encrypt response');
+    const resp = await this._rpcCall('nostr_nip04_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip04_encrypt response');
     return resp.result;
   }
 
   async nip04Decrypt(peerHex, ciphertext) {
-    const resp = await this._rpcCall('nip04_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip04_decrypt response');
+    const resp = await this._rpcCall('nostr_nip04_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip04_decrypt response');
     return resp.result;
   }
 
   async nip44Encrypt(peerHex, plaintext) {
-    const resp = await this._rpcCall('nip44_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip44_encrypt response');
+    const resp = await this._rpcCall('nostr_nip44_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip44_encrypt response');
     return resp.result;
   }
 
   async nip44Decrypt(peerHex, ciphertext) {
-    const resp = await this._rpcCall('nip44_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip44_decrypt response');
+    const resp = await this._rpcCall('nostr_nip44_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip44_decrypt response');
     return resp.result;
   }
 
@@ -442,12 +440,15 @@ class NSignerWebSerial {
       const vid = matchInfo?.usbVendorId;
       const pid = matchInfo?.usbProductId;
 
-      return ports.find((p) => {
+      // Prefer exact VID/PID match when available, but do not require it.
+      const exact = ports.find((p) => {
         const i = p.getInfo?.() || {};
         if (vid != null && i.usbVendorId !== vid) return false;
         if (pid != null && i.usbProductId !== pid) return false;
         return true;
-      }) || ports[0] || null;
+      });
+
+      return exact || ports[0] || null;
     } catch (_) {
       return null;
     }

src/signers/nsigner-webusb.js

@@ -1,7 +1,7 @@
 class NSignerWebUSB {
-  // Keep picker broad (vendor-level) so Chromium can show all matching Feather states.
-  // Product-level checks still happen during open()/RPC.
-  static FILTERS = [{ vendorId: 0x303a }];
+  // Keep WebUSB chooser unfiltered so users can select any USB device.
+  // WebUSB requires a non-empty filters array; {} matches all devices.
+  static FILTERS = [{}];
 
   static async requestAndConnect(options = {}) {
     if (!('usb' in navigator)) {
@@ -20,13 +20,14 @@ class NSignerWebUSB {
     const devices = await navigator.usb.getDevices();
     if (!devices || devices.length === 0) return null;
 
-    const vendorId = options.vendorId ?? 0x303a;
+    const vendorId = options.vendorId ?? null;
     const productId = options.productId ?? null;
     const serial = options.serialNumber || null;
 
     return devices.find((d) => {
-      const vendorMatch = d.vendorId === vendorId;
-      if (!vendorMatch) return false;
+      if (vendorId !== null && vendorId !== undefined && d.vendorId !== vendorId) {
+        return false;
+      }
 
       if (productId !== null && productId !== undefined && d.productId !== productId) {
         return false;
@@ -153,43 +154,43 @@ class NSignerWebUSB {
 
   async getPublicKey() {
     const params = [{ nostr_index: this.nostrIndex }];
-    const resp = await this._rpcCall('get_public_key', params);
+    const resp = await this._rpcCall('nostr_get_public_key', params);
     if (!resp || typeof resp.result !== 'string') {
-      throw new Error('Invalid get_public_key response');
+      throw new Error('Invalid nostr_get_public_key response');
     }
     return resp.result.trim().toLowerCase();
   }
 
   async signEvent(unsignedEvent) {
     const params = [unsignedEvent, { nostr_index: this.nostrIndex }];
-    const resp = await this._rpcCall('sign_event', params);
+    const resp = await this._rpcCall('nostr_sign_event', params);
     if (!resp || typeof resp.result !== 'object') {
-      throw new Error('Invalid sign_event response');
+      throw new Error('Invalid nostr_sign_event response');
     }
     return resp.result;
   }
 
   async nip04Encrypt(peerHex, plaintext) {
-    const resp = await this._rpcCall('nip04_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip04_encrypt response');
+    const resp = await this._rpcCall('nostr_nip04_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip04_encrypt response');
     return resp.result;
   }
 
   async nip04Decrypt(peerHex, ciphertext) {
-    const resp = await this._rpcCall('nip04_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip04_decrypt response');
+    const resp = await this._rpcCall('nostr_nip04_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip04_decrypt response');
     return resp.result;
   }
 
   async nip44Encrypt(peerHex, plaintext) {
-    const resp = await this._rpcCall('nip44_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip44_encrypt response');
+    const resp = await this._rpcCall('nostr_nip44_encrypt', [peerHex, plaintext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip44_encrypt response');
     return resp.result;
   }
 
   async nip44Decrypt(peerHex, ciphertext) {
-    const resp = await this._rpcCall('nip44_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
-    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nip44_decrypt response');
+    const resp = await this._rpcCall('nostr_nip44_decrypt', [peerHex, ciphertext, { nostr_index: this.nostrIndex }]);
+    if (!resp || typeof resp.result !== 'string') throw new Error('Invalid nostr_nip44_decrypt response');
     return resp.result;
   }
 

src/ui/modal.js

@@ -1351,7 +1351,7 @@ class Modal {
     try {
       // Incremental step 1:
       // chooser + capture + driver open only (no getPublicKey/auth yet).
-      const selectedDevice = await navigator.usb.requestDevice({ filters: [{ vendorId: 0x303a }] });
+      const selectedDevice = await navigator.usb.requestDevice({ filters: [{}] });
       this._nsignerSelectedDevice = selectedDevice;
 
       if (!window.NSignerWebUSB || typeof window.NSignerWebUSB !== 'function') {
@@ -1696,10 +1696,7 @@ class Modal {
 
           if (!driver && canUsb) {
             try {
-              const pairedUsb = await window.NSignerWebUSB.getPairedDevice({
-                vendorId: 0x303a,
-                productId: 0x4001
-              });
+              const pairedUsb = await window.NSignerWebUSB.getPairedDevice();
               if (pairedUsb) {
                 renderConnectingScreen('Reconnecting to paired WebUSB device...');
                 transport = 'webusb';
@@ -1743,7 +1740,7 @@ class Modal {
           } else if (target === 'webusb') {
             renderConnectingScreen('Waiting for WebUSB device selection...');
             try {
-              const selectedDevice = await navigator.usb.requestDevice({ filters: [{ vendorId: 0x303a }] });
+              const selectedDevice = await navigator.usb.requestDevice({ filters: [{}] });
               transport = 'webusb';
               driver = await connectUsbFromDevice(selectedDevice);
             } catch (usbErr) {
@@ -1988,7 +1985,7 @@ class Modal {
           throw new Error('NSignerWebUSB driver missing');
         }
 
-        const selectedDevice = await navigator.usb.requestDevice({ filters: [{ vendorId: 0x303a }] });
+        const selectedDevice = await navigator.usb.requestDevice({ filters: [{}] });
 
         const driver = new window.NSignerWebUSB(selectedDevice, {
           callerSecretKey: caller.secret,