diff --git a/bun.lock b/bun.lock
index b2a90a1..1c072a4 100644
--- a/bun.lock
+++ b/bun.lock
@@ -8,7 +8,7 @@
         "@base-org/account": "^2.5.1",
         "@coinbase/wallet-sdk": "^4.3.6",
         "@electric-sql/pglite": "^0.3.15",
-        "@lifi/intent": "file:../intent.ts",
+        "@lifi/intent": "0.1.4",
         "@metamask/sdk": "^0.34.0",
         "@safe-global/safe-apps-provider": "~0.18.6",
         "@safe-global/safe-apps-sdk": "^9.1.0",
@@ -231,7 +231,7 @@
 
     "@jridgewell/trace-mapping": ["@jridgewell/trace-mapping@0.3.29", "", { "dependencies": { "@jridgewell/resolve-uri": "^3.1.0", "@jridgewell/sourcemap-codec": "^1.4.14" } }, "sha512-uw6guiW/gcAGPDhLmd77/6lW8QLeiV5RUTsAX46Db6oLhGaVj4lhnPwb184s1bkc8kdVg/+h988dro8GRDpmYQ=="],
 
-    "@lifi/intent": ["@lifi/intent@file:../intent.ts", { "dependencies": { "borsh": "^2.0.0", "ky": "^1.12.0", "viem": "~2.45.1" }, "devDependencies": { "@types/bun": "^1.3.8", "bun": "^1.3.5", "husky": "9.1.7", "lint-staged": "16.1.0", "prettier": "3.4.2", "typescript": "^5.6.3" } }],
+    "@lifi/intent": ["@lifi/intent@0.1.4", "", { "dependencies": { "borsh": "^2.0.0", "ky": "^1.12.0", "viem": "~2.45.1" } }, "sha512-ZMEmPF/Oq/POkoXh320Jnf1LYQ4ZL5LRsfElZ8RymklCVRBt9RH0NmvcphL5haLKPmF7OJ90cMmgcclcPrfpOg=="],
 
     "@lit-labs/ssr-dom-shim": ["@lit-labs/ssr-dom-shim@1.5.1", "", {}, "sha512-Aou5UdlSpr5whQe8AA/bZG0jMj96CoJIWbGfZ91qieWu5AWUMKw8VR/pAkQkJYvBNhmCcWnZlyyk5oze8JIqYA=="],
 
@@ -279,30 +279,6 @@
 
     "@nodelib/fs.walk": ["@nodelib/fs.walk@1.2.8", "", { "dependencies": { "@nodelib/fs.scandir": "2.1.5", "fastq": "^1.6.0" } }, "sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg=="],
 
-    "@oven/bun-darwin-aarch64": ["@oven/bun-darwin-aarch64@1.3.13", "", { "os": "darwin", "cpu": "arm64" }, "sha512-qAS6Hg8Q14ckfBuqJ2Zh7gBQSVSUHeibSq4OFqBTv6DzyJuxYlr0sdYQzmYmnbPxbqobekqUDTa/4XEaqRi7vg=="],
-
-    "@oven/bun-darwin-x64": ["@oven/bun-darwin-x64@1.3.13", "", { "os": "darwin", "cpu": "x64" }, "sha512-kGePeDD4IN4imo+H4uLjQGZLmvyYQg+nKr2P0nt4ksXXrWA4HE+mb0/TUPHfRI127DocXQpew+fvrHuHR5mpJQ=="],
-
-    "@oven/bun-darwin-x64-baseline": ["@oven/bun-darwin-x64-baseline@1.3.13", "", { "os": "darwin", "cpu": "x64" }, "sha512-gMEQayUpmCPYaE9zkNBj9TiQqHupnhjOYcuSzxFjzIjHJBUO4VjNnrpbKVeXNs+rKHFothORDd2QKquu5paSPQ=="],
-
-    "@oven/bun-linux-aarch64": ["@oven/bun-linux-aarch64@1.3.13", "", { "os": "linux", "cpu": "arm64" }, "sha512-NbLOJdr+RBFO1vFZ2YUFg4oVJ+2ua6zrwo4ZWRs0jKKcGJWtbY2wY5uz+i0PkwH6b9HYaYDgVTzE4ev06ncYZw=="],
-
-    "@oven/bun-linux-aarch64-musl": ["@oven/bun-linux-aarch64-musl@1.3.13", "", { "os": "linux", "cpu": "arm64" }, "sha512-UV9EE18VE5aRhWtV2L6MTAGGn3slhJJ2OW/m+FJM15maHm0qf1V7TaZY0FovxhdQRvnklSiQ7Ntv0H5TUX4w0g=="],
-
-    "@oven/bun-linux-x64": ["@oven/bun-linux-x64@1.3.13", "", { "os": "linux", "cpu": "x64" }, "sha512-UwttIUXoe9fS+40OcjoaRHgZw+HCPFqBVWEXkXqAJ3W7wA0XPZrWsoMAD9sGh3TaLqrwdiMo5xPogwpXhOtVXA=="],
-
-    "@oven/bun-linux-x64-baseline": ["@oven/bun-linux-x64-baseline@1.3.13", "", { "os": "linux", "cpu": "x64" }, "sha512-fOi4ziKzgJG4UrrNd4AicBs6Fu9GY5xOqg+9tC76nuZNDAdSh6++kzab6TNi1Ck0Yzq6zIBIdGit6/0uSbBn8A=="],
-
-    "@oven/bun-linux-x64-musl": ["@oven/bun-linux-x64-musl@1.3.13", "", { "os": "linux", "cpu": "x64" }, "sha512-+VHhE44kEjCXcTFHyc81zfTxL9+vzh9RqIh7gM1iWNhxpctD9kzntbUkP3UTFTwwNjoou1o8VRyxQafvc4OepA=="],
-
-    "@oven/bun-linux-x64-musl-baseline": ["@oven/bun-linux-x64-musl-baseline@1.3.13", "", { "os": "linux", "cpu": "x64" }, "sha512-fqBKuiiWLEu2dVkowZaXgKS98xfrvBqivdoxRtRP3eINcpI1dcelGbsOz+Xphn7tbGAuBiE1/0AelvvvdqS9rg=="],
-
-    "@oven/bun-windows-aarch64": ["@oven/bun-windows-aarch64@1.3.13", "", { "os": "win32", "cpu": "arm64" }, "sha512-+EvdRWRCRg95Xea4M2lqSJFTjzQBTJDQTMlbG8bmwFkVTN16MdmSH7xhfxVQWUOyZBLEpIwuNFIlBBxVCwSUyQ=="],
-
-    "@oven/bun-windows-x64": ["@oven/bun-windows-x64@1.3.13", "", { "os": "win32", "cpu": "x64" }, "sha512-vqDEFX63ZZQF3YstPSpPD+RxNm5AILPdUuuKpNwsj7ld4NjhdHUYkAmLXDtKNWt9JMRL10bop//W8faY/LV+RQ=="],
-
-    "@oven/bun-windows-x64-baseline": ["@oven/bun-windows-x64-baseline@1.3.13", "", { "os": "win32", "cpu": "x64" }, "sha512-6gy4hhQSjq/T/S9hC9m3NxY0RY+9Ww+XNlB+8koIMTsMSYEjk7Ho+hFHQz1Bn4W61Ub7Vykufg+jgDgPfa2GFA=="],
-
     "@paulmillr/qr": ["@paulmillr/qr@0.2.1", "", {}, "sha512-IHnV6A+zxU7XwmKFinmYjUcwlyK9+xkG3/s9KcQhI9BjQKycrJ1JRO+FbNYPwZiPKW3je/DR0k7w8/gLa5eaxQ=="],
 
     "@phosphor-icons/webcomponents": ["@phosphor-icons/webcomponents@2.1.5", "", { "dependencies": { "lit": "^3" } }, "sha512-JcvQkZxvcX2jK+QCclm8+e8HXqtdFW9xV4/kk2aL9Y3dJA2oQVt+pzbv1orkumz3rfx4K9mn9fDoMr1He1yr7Q=="],
@@ -691,8 +667,6 @@
 
     "bufferutil": ["bufferutil@4.1.0", "", { "dependencies": { "node-gyp-build": "^4.3.0" } }, "sha512-ZMANVnAixE6AWWnPzlW2KpUrxhm9woycYvPOo67jWHyFowASTEd9s+QN1EIMsSDtwhIxN4sWE1jotpuDUIgyIw=="],
 
-    "bun": ["bun@1.3.13", "", { "optionalDependencies": { "@oven/bun-darwin-aarch64": "1.3.13", "@oven/bun-darwin-x64": "1.3.13", "@oven/bun-darwin-x64-baseline": "1.3.13", "@oven/bun-linux-aarch64": "1.3.13", "@oven/bun-linux-aarch64-musl": "1.3.13", "@oven/bun-linux-x64": "1.3.13", "@oven/bun-linux-x64-baseline": "1.3.13", "@oven/bun-linux-x64-musl": "1.3.13", "@oven/bun-linux-x64-musl-baseline": "1.3.13", "@oven/bun-windows-aarch64": "1.3.13", "@oven/bun-windows-x64": "1.3.13", "@oven/bun-windows-x64-baseline": "1.3.13" }, "os": [ "linux", "win32", "darwin", ], "cpu": [ "x64", "arm64", ], "bin": { "bun": "bin/bun.exe", "bunx": "bin/bunx.exe" } }, "sha512-b9T4xZ8KqCHs4+TkHJv540LG1B8OD7noKu0Qaizusx3jFtMDHY6osNqgbaOlwW2B8RB2AKzz+sjzlGKIGxIjZw=="],
-
     "bun-types": ["bun-types@1.3.8", "", { "dependencies": { "@types/node": "*" } }, "sha512-fL99nxdOWvV4LqjmC+8Q9kW3M4QTtTR1eePs94v5ctGqU8OeceWrSUaRw3JYb7tU3FkMIAjkueehrHPPPGKi5Q=="],
 
     "call-bind": ["call-bind@1.0.8", "", { "dependencies": { "call-bind-apply-helpers": "^1.0.0", "es-define-property": "^1.0.0", "get-intrinsic": "^1.2.4", "set-function-length": "^1.2.2" } }, "sha512-oKlSFMcMwpUg2ednkhQ454wfWiU/ul3CkJe/PEHcTKuiX6RpbehUiFMXu13HalGZxfUwCQzZG747YXBn1im9ww=="],
diff --git a/package.json b/package.json
index 8916358..82e6707 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "@base-org/account": "^2.5.1",
     "@coinbase/wallet-sdk": "^4.3.6",
     "@electric-sql/pglite": "^0.3.15",
-    "@lifi/intent": "file:../intent.ts",
+    "@lifi/intent": "0.1.4",
     "@metamask/sdk": "^0.34.0",
     "@safe-global/safe-apps-provider": "~0.18.6",
     "@safe-global/safe-apps-sdk": "^9.1.0",
diff --git a/src/lib/components/GetQuote.svelte b/src/lib/components/GetQuote.svelte
index fdcd9c9..9b1bf3e 100644
--- a/src/lib/components/GetQuote.svelte
+++ b/src/lib/components/GetQuote.svelte
@@ -1,12 +1,14 @@
 <script lang="ts">
   import { IntentApi } from "@lifi/intent";
   import type { AppTokenContext } from "$lib/appTypes";
+  import { resolveDemoQuoteParams } from "$lib/libraries/demoQuote";
   import { interval } from "rxjs";
-  import { isAddress } from "viem";
 
   let {
     exclusiveFor = $bindable(),
     useExclusiveForQuoteRequest = false,
+    use11Demo = false,
+    integratorKey = "",
     inputTokens,
     outputTokens = $bindable(),
     account,
@@ -15,6 +17,8 @@
   }: {
     exclusiveFor: string;
     useExclusiveForQuoteRequest?: boolean;
+    use11Demo?: boolean;
+    integratorKey?: string;
     inputTokens: AppTokenContext[];
     outputTokens: AppTokenContext[];
     account: () => `0x${string}`;
@@ -22,23 +26,23 @@
     useProductionApi: boolean | null;
   } = $props();
 
-  const toRawAddress = (value: string): `0x${string}` | undefined =>
-    isAddress(value, { strict: false }) ? (value as `0x${string}`) : undefined;
-
   const intentApi = $derived(new IntentApi(useProductionApi ?? mainnet));
 
   async function getQuoteAndSet() {
     try {
-      const requestedExclusiveFor = useExclusiveForQuoteRequest
-        ? [toRawAddress(exclusiveFor)].filter(
-            (value): value is `0x${string}` => value !== undefined
-          )
-        : undefined;
+      const { exclusiveFor: requestedExclusiveFor, integratorKey: requestedIntegratorKey } =
+        resolveDemoQuoteParams({
+          use11Demo,
+          integratorKey,
+          useExclusiveForQuoteRequest,
+          exclusiveFor
+        });
 
       const response = await intentApi.getQuotes({
         user: account(),
         userChainId: inputTokens[0].token.chainId,
         exclusiveFor: requestedExclusiveFor,
+        integratorKey: requestedIntegratorKey,
         inputs: inputTokens.map(({ token, amount }) => {
           return {
             sender: account(),
diff --git a/src/lib/config.ts b/src/lib/config.ts
index 2d5e2c8..7944a96 100644
--- a/src/lib/config.ts
+++ b/src/lib/config.ts
@@ -37,6 +37,10 @@ export const MULTICHAIN_INPUT_SETTLER_COMPACT =
 export const ALWAYS_OK_ALLOCATOR = "281773970620737143753120258" as const;
 export const POLYMER_ALLOCATOR = "116450367070547927622991121" as const; // 0x02ecC89C25A5DCB1206053530c58E002a737BD11 signing by 0x934244C8cd6BeBDBd0696A659D77C9BDfE86Efe6
 export const COIN_FILLER = "0x0000000000eC36B683C2E6AC89e9A75989C22a2e" as const;
+// LI.FI solver used for the 1:1 stablecoin demo. In demo mode the quote request
+// omits exclusiveFor, but the on-chain intent is still made exclusive to this
+// solver so it fills 1:1 via its quick fallback.
+export const DEMO_EXCLUSIVE_SOLVER = "0x94807fE4300D15909C1a4fd39f76c61D68aee11E" as const;
 export const WORMHOLE_ORACLE: Partial<Record<number, `0x${string}`>> = {
   [ethereum.id]: "0x0000000000000000000000000000000000000000",
   [arbitrum.id]: "0x0000000000000000000000000000000000000000",
diff --git a/src/lib/libraries/demoQuote.ts b/src/lib/libraries/demoQuote.ts
new file mode 100644
index 0000000..f20c127
--- /dev/null
+++ b/src/lib/libraries/demoQuote.ts
@@ -0,0 +1,41 @@
+import { isAddress } from "viem";
+
+export type DemoQuoteParams = {
+  /** Solver addresses to request exclusivity for, or undefined for none. */
+  exclusiveFor: `0x${string}`[] | undefined;
+  /** Integrator key to send as the X-Integrator-Key header, or undefined. */
+  integratorKey: string | undefined;
+};
+
+const toRawAddress = (value: string): `0x${string}` | undefined =>
+  isAddress(value, { strict: false }) ? (value as `0x${string}`) : undefined;
+
+/**
+ * Resolves the exclusivity and integrator-key parameters for a quote request.
+ *
+ * In 1:1 demo mode the integrator key is sent as a header and `exclusiveFor` is
+ * never set, so the request carries no `metadata.exclusiveFor` (the integrator
+ * key alone drives the 1:1 quote). Outside demo mode, behavior follows the manual
+ * "Lock Exclusive" field.
+ */
+export function resolveDemoQuoteParams(opts: {
+  use11Demo: boolean;
+  integratorKey: string;
+  useExclusiveForQuoteRequest: boolean;
+  exclusiveFor: string;
+}): DemoQuoteParams {
+  if (opts.use11Demo) {
+    return {
+      exclusiveFor: undefined,
+      integratorKey: opts.integratorKey ? opts.integratorKey : undefined
+    };
+  }
+
+  const exclusiveFor = opts.useExclusiveForQuoteRequest
+    ? [toRawAddress(opts.exclusiveFor)].filter(
+        (value): value is `0x${string}` => value !== undefined
+      )
+    : undefined;
+
+  return { exclusiveFor, integratorKey: undefined };
+}
diff --git a/src/lib/screens/IssueIntent.svelte b/src/lib/screens/IssueIntent.svelte
index d038bb1..3883fca 100644
--- a/src/lib/screens/IssueIntent.svelte
+++ b/src/lib/screens/IssueIntent.svelte
@@ -4,7 +4,12 @@
   import FormControl from "$lib/components/ui/FormControl.svelte";
   import ScreenFrame from "$lib/components/ui/ScreenFrame.svelte";
   import SectionCard from "$lib/components/ui/SectionCard.svelte";
-  import { POLYMER_ALLOCATOR, formatTokenAmount, getChainName } from "$lib/config";
+  import {
+    DEMO_EXCLUSIVE_SOLVER,
+    POLYMER_ALLOCATOR,
+    formatTokenAmount,
+    getChainName
+  } from "$lib/config";
   import { IntentFactory, escrowApprove } from "$lib/libraries/intentFactory";
   import { CompactLib } from "$lib/libraries/compactLib";
   import store from "$lib/state.svelte";
@@ -39,7 +44,11 @@
 
   const intentOptions = $derived.by(
     (): AppCreateIntentOptions => ({
-      exclusiveFor: resolveExclusiveFor(store.exclusiveFor),
+      // In 1:1 demo mode the quote omits exclusiveFor, but the on-chain intent
+      // must still be exclusive to the demo solver so it fills 1:1.
+      exclusiveFor: store.use11Demo
+        ? DEMO_EXCLUSIVE_SOLVER
+        : resolveExclusiveFor(store.exclusiveFor),
       inputTokens: store.inputTokens,
       outputTokens: store.outputTokens,
       verifier: store.verifier,
@@ -226,6 +235,8 @@
           <GetQuote
             bind:exclusiveFor={store.exclusiveFor}
             useExclusiveForQuoteRequest={store.useExclusiveForQuoteRequest}
+            use11Demo={store.use11Demo}
+            integratorKey={store.integratorKey}
             mainnet={store.mainnet}
             useProductionApi={store.useProductionApi}
             inputTokens={store.inputTokens}
@@ -343,6 +354,27 @@
             Lock Exclusive
           </label>
         </div>
+        <div class="flex min-w-0 items-center gap-1">
+          <label
+            class="flex items-center gap-1 text-[11px] font-semibold whitespace-nowrap text-gray-500"
+          >
+            <input
+              type="checkbox"
+              class="h-3.5 w-3.5 rounded border-gray-300 text-sky-600 focus:ring-sky-300"
+              bind:checked={store.use11Demo}
+            />
+            1:1 demo
+          </label>
+          {#if store.use11Demo}
+            <FormControl
+              type="text"
+              size="sm"
+              className="flex-1"
+              placeholder="X-Integrator-Key"
+              bind:value={store.integratorKey}
+            />
+          {/if}
+        </div>
       </div>
     </SectionCard>
 
diff --git a/src/lib/state.svelte.ts b/src/lib/state.svelte.ts
index ff64a49..e181349 100644
--- a/src/lib/state.svelte.ts
+++ b/src/lib/state.svelte.ts
@@ -290,6 +290,11 @@ class Store {
   exclusiveFor: string = $state("");
   recipient: string = $state("");
   useExclusiveForQuoteRequest = $state(false);
+  // 1:1 stablecoin demo: when on, quote requests send the X-Integrator-Key header
+  // and never set metadata.exclusiveFor (the integrator key drives the quote), but
+  // the on-chain intent is still made exclusive to the demo solver so it fills 1:1.
+  use11Demo = $state(false);
+  integratorKey: string = $state("");
 
   invalidateWalletReadCache(scope: "all" | "balance" | "allowance" | "compact" = "all") {
     if (scope === "all" || scope === "balance") invalidateRpcPrefix("balance:");
diff --git a/tests/unit/demoQuote.test.ts b/tests/unit/demoQuote.test.ts
new file mode 100644
index 0000000..c1f5b8e
--- /dev/null
+++ b/tests/unit/demoQuote.test.ts
@@ -0,0 +1,74 @@
+import { describe, expect, it } from "bun:test";
+import { resolveDemoQuoteParams } from "../../src/lib/libraries/demoQuote";
+
+describe("resolveDemoQuoteParams", () => {
+  it("never sets exclusiveFor and sends the integrator key in demo mode", () => {
+    const result = resolveDemoQuoteParams({
+      use11Demo: true,
+      integratorKey: "demo-key",
+      useExclusiveForQuoteRequest: false,
+      exclusiveFor: ""
+    });
+
+    expect(result.exclusiveFor).toBeUndefined();
+    expect(result.integratorKey).toBe("demo-key");
+  });
+
+  it("ignores the manual exclusive field while in demo mode", () => {
+    const result = resolveDemoQuoteParams({
+      use11Demo: true,
+      integratorKey: "demo-key",
+      useExclusiveForQuoteRequest: true,
+      exclusiveFor: "0x1111111111111111111111111111111111111111"
+    });
+
+    expect(result.exclusiveFor).toBeUndefined();
+  });
+
+  it("omits the integrator key when none is provided in demo mode", () => {
+    const result = resolveDemoQuoteParams({
+      use11Demo: true,
+      integratorKey: "",
+      useExclusiveForQuoteRequest: false,
+      exclusiveFor: ""
+    });
+
+    expect(result.exclusiveFor).toBeUndefined();
+    expect(result.integratorKey).toBeUndefined();
+  });
+
+  it("never sends an integrator key when demo mode is off", () => {
+    const result = resolveDemoQuoteParams({
+      use11Demo: false,
+      integratorKey: "demo-key",
+      useExclusiveForQuoteRequest: false,
+      exclusiveFor: ""
+    });
+
+    expect(result.integratorKey).toBeUndefined();
+    expect(result.exclusiveFor).toBeUndefined();
+  });
+
+  it("uses the manual exclusive address when locked and not in demo mode", () => {
+    const addr = "0x1111111111111111111111111111111111111111";
+    const result = resolveDemoQuoteParams({
+      use11Demo: false,
+      integratorKey: "",
+      useExclusiveForQuoteRequest: true,
+      exclusiveFor: addr
+    });
+
+    expect(result.exclusiveFor).toEqual([addr]);
+  });
+
+  it("filters out an invalid manual exclusive address", () => {
+    const result = resolveDemoQuoteParams({
+      use11Demo: false,
+      integratorKey: "",
+      useExclusiveForQuoteRequest: true,
+      exclusiveFor: "not-an-address"
+    });
+
+    expect(result.exclusiveFor).toEqual([]);
+  });
+});