diff --git a/src/operations/exchanges.ts b/src/operations/exchanges.ts
index 89f89ec10..cf6b06868 100644
--- a/src/operations/exchanges.ts
+++ b/src/operations/exchanges.ts
@@ -77,6 +77,7 @@ async function setExchangeError(
   baseUrl: string,
   err: OperationError,
 ): Promise<void> {
+  console.log(`last error for exchange ${baseUrl}:`, err);
   const mut = (exchange: ExchangeRecord) => {
     exchange.lastError = err;
     return exchange;
diff --git a/src/operations/refresh.ts b/src/operations/refresh.ts
index b53baf390..6dd16d61a 100644
--- a/src/operations/refresh.ts
+++ b/src/operations/refresh.ts
@@ -229,7 +229,10 @@ async function refreshMelt(
     return;
   }
 
-  const reqUrl = new URL("refresh/melt", refreshSession.exchangeBaseUrl);
+  const reqUrl = new URL(
+    `coins/${coin.coinPub}/melt`,
+    refreshSession.exchangeBaseUrl,
+  );
   const meltReq = {
     coin_pub: coin.coinPub,
     confirm_sig: refreshSession.confirmSig,
@@ -244,7 +247,10 @@ async function refreshMelt(
     console.log(`got status ${resp.status} for refresh/melt`);
     try {
       const respJson = await resp.json();
-      console.log(`body of refresh/melt error response:`, JSON.stringify(respJson, undefined, 2));
+      console.log(
+        `body of refresh/melt error response:`,
+        JSON.stringify(respJson, undefined, 2),
+      );
     } catch (e) {
       console.log(`body of refresh/melt error response is not JSON`);
     }
@@ -344,7 +350,10 @@ async function refreshReveal(
     link_sigs: linkSigs,
   };
 
-  const reqUrl = new URL("refresh/reveal", refreshSession.exchangeBaseUrl);
+  const reqUrl = new URL(
+    `refreshes/${refreshSession.hash}/reveal`,
+    refreshSession.exchangeBaseUrl,
+  );
   logger.trace("reveal request:", req);
 
   let resp;
@@ -523,7 +532,9 @@ async function processRefreshSession(
   refreshGroupId: string,
   coinIndex: number,
 ) {
-  logger.trace(`processing refresh session for coin ${coinIndex} of group ${refreshGroupId}`);
+  logger.trace(
+    `processing refresh session for coin ${coinIndex} of group ${refreshGroupId}`,
+  );
   let refreshGroup = await ws.db.get(Stores.refreshGroups, refreshGroupId);
   if (!refreshGroup) {
     return;
diff --git a/src/operations/refund.ts b/src/operations/refund.ts
index 2fb3a2390..9d1c5308e 100644
--- a/src/operations/refund.ts
+++ b/src/operations/refund.ts
@@ -423,7 +423,7 @@ async function processPurchaseApplyRefundImpl(
     console.log("sending refund permission", perm);
     // FIXME: not correct once we support multiple exchanges per payment
     const exchangeUrl = purchase.payReq.coins[0].exchange_url;
-    const reqUrl = new URL("refund", exchangeUrl);
+    const reqUrl = new URL(`coins/${perm.coin_pub}/refund`, exchangeUrl);
     const resp = await ws.http.postJson(reqUrl.href, req);
     console.log("sent refund permission");
     switch (resp.status) {
diff --git a/src/operations/reserves.ts b/src/operations/reserves.ts
index 463b57b6c..1f9cc3053 100644
--- a/src/operations/reserves.ts
+++ b/src/operations/reserves.ts
@@ -402,12 +402,11 @@ async function updateReserve(
     return;
   }
 
-  const reqUrl = new URL("reserve/status", reserve.exchangeBaseUrl);
-  reqUrl.searchParams.set("reserve_pub", reservePub);
+  const reqUrl = new URL(`reserves/${reservePub}`, reserve.exchangeBaseUrl);
   let resp;
   try {
     resp = await ws.http.get(reqUrl.href);
-    console.log("got reserve/status response", await resp.json());
+    console.log("got reserves/${RESERVE_PUB} response", await resp.json());
     if (resp.status === 404) {
       const m = "reserve not known to the exchange yet"
       throw new OperationFailedError(m, {
diff --git a/src/operations/versions.ts b/src/operations/versions.ts
index 393bdd887..6ac78f013 100644
--- a/src/operations/versions.ts
+++ b/src/operations/versions.ts
@@ -20,7 +20,7 @@
  *
  * Uses libtool's current:revision:age versioning.
  */
-export const WALLET_EXCHANGE_PROTOCOL_VERSION = "6";
+export const WALLET_EXCHANGE_PROTOCOL_VERSION = "7:0:0";
 
 /**
  * Cache breaker that is appended to queries such as /keys and /wire
diff --git a/src/operations/withdraw.ts b/src/operations/withdraw.ts
index 3a1f3cf06..0c58f5f2f 100644
--- a/src/operations/withdraw.ts
+++ b/src/operations/withdraw.ts
@@ -197,7 +197,7 @@ async function processPlanchet(
   wd.reserve_pub = planchet.reservePub;
   wd.reserve_sig = planchet.withdrawSig;
   wd.coin_ev = planchet.coinEv;
-  const reqUrl = new URL("reserve/withdraw", exchange.baseUrl).href;
+  const reqUrl = new URL(`reserves/${planchet.reservePub}/withdraw`, exchange.baseUrl).href;
   const resp = await ws.http.postJson(reqUrl, wd);
   if (resp.status !== 200) {
     throw Error(`unexpected status ${resp.status} for withdraw`);