diff --git a/changes/site-target-client-compatibility.changed.md b/changes/site-target-client-compatibility.changed.md
new file mode 100644
index 0000000..a8de6db
--- /dev/null
+++ b/changes/site-target-client-compatibility.changed.md
@@ -0,0 +1,7 @@
+---
+"githits": patch
+"@githits/mcp": none
+---
+
+- **Prepare standalone-site compatibility** - Resolve requests and responses
+  recognize the reserved site target kind ahead of backend activation.
diff --git a/packages/core-internal/src/services/resolve-target-service.ts b/packages/core-internal/src/services/resolve-target-service.ts
index 8547e4f..36d912f 100644
--- a/packages/core-internal/src/services/resolve-target-service.ts
+++ b/packages/core-internal/src/services/resolve-target-service.ts
@@ -17,7 +17,7 @@ import {
 } from "./package-intelligence-service.js";
 import type { TokenProvider } from "./token-provider.js";
 
-export type ResolveTargetKind = "PACKAGE" | "REPOSITORY";
+export type ResolveTargetKind = "PACKAGE" | "REPOSITORY" | "SITE";
 
 export interface ResolveTargetParams {
   name: string;
diff --git a/packages/mcp/src/shared/resolve-target-request.test.ts b/packages/mcp/src/shared/resolve-target-request.test.ts
index a56ef57..0a46a88 100644
--- a/packages/mcp/src/shared/resolve-target-request.test.ts
+++ b/packages/mcp/src/shared/resolve-target-request.test.ts
@@ -57,6 +57,22 @@ describe("buildResolveTargetParams", () => {
     });
   });
 
+  it("accepts every resolver target kind", () => {
+    for (const [preferKind, expected] of [
+      ["package", "PACKAGE"],
+      ["repository", "REPOSITORY"],
+      ["site", "SITE"],
+    ] as const) {
+      expect(
+        buildResolveTargetParams({
+          name: "documentation",
+          preferKind,
+          includeDetailedFields: false,
+        }).preferredKinds,
+      ).toEqual([expected]);
+    }
+  });
+
   it("rejects empty names and unsupported enums", () => {
     expect(() =>
       buildResolveTargetParams({ name: " ", includeDetailedFields: false }),
@@ -78,7 +94,7 @@ describe("buildResolveTargetParams", () => {
     expect(() =>
       buildResolveTargetParams({
         name: "x",
-        preferKind: "site",
+        preferKind: "workspace",
         includeDetailedFields: false,
       }),
     ).toThrow("prefer-kind expects package or repository");
diff --git a/packages/mcp/src/shared/resolve-target-request.ts b/packages/mcp/src/shared/resolve-target-request.ts
index a2fa4fb..6e49e44 100644
--- a/packages/mcp/src/shared/resolve-target-request.ts
+++ b/packages/mcp/src/shared/resolve-target-request.ts
@@ -82,6 +82,7 @@ function parsePreferredKind(
   if (!kind) return undefined;
   if (kind === "package") return "PACKAGE";
   if (kind === "repository") return "REPOSITORY";
+  if (kind === "site") return "SITE";
   throw new InvalidPackageSpecError(
     `prefer-kind expects package or repository. Got '${value}'.`,
   );
diff --git a/packages/mcp/src/shared/resolve-target-response.test.ts b/packages/mcp/src/shared/resolve-target-response.test.ts
index 5d0f2c0..6746b2c 100644
--- a/packages/mcp/src/shared/resolve-target-response.test.ts
+++ b/packages/mcp/src/shared/resolve-target-response.test.ts
@@ -172,6 +172,29 @@ describe("formatResolveTargetTerminal", () => {
     expect(output).toContain("githits search '<query>'");
   });
 
+  it("renders standalone documentation sites as a known target kind", () => {
+    const site = candidate({
+      kind: "SITE",
+      canonicalKey:
+        "site:developer.apple.com/design/human-interface-guidelines",
+      displayName: "Apple Human Interface Guidelines",
+      stars: undefined,
+      downloadsLastMonth: undefined,
+      documentationUrl:
+        "https://developer.apple.com/design/human-interface-guidelines",
+      codeAvailable: false,
+    });
+
+    const output = formatResolveTargetTerminal(
+      result({ best: site, candidates: [site], protectedMatches: [] }),
+      { name: "Apple human interface guidelines", useColors: false },
+    );
+
+    expect(output).toContain(
+      "site:developer.apple.com/design/human-interface-guidelines [exact] · site · docs",
+    );
+  });
+
   it("appends missing protected and best candidates after ranked candidates", () => {
     const protectedExtra = {
       kind: "PACKAGE",
diff --git a/packages/mcp/src/shared/resolve-target-response.ts b/packages/mcp/src/shared/resolve-target-response.ts
index 9b31281..2780d58 100644
--- a/packages/mcp/src/shared/resolve-target-response.ts
+++ b/packages/mcp/src/shared/resolve-target-response.ts
@@ -143,7 +143,7 @@ export function formatResolveTargetTerminal(
 }
 
 const KNOWN_CONFIDENCE_VALUES = new Set(["exact", "high", "medium", "low"]);
-const KNOWN_KIND_VALUES = new Set(["package", "repository"]);
+const KNOWN_KIND_VALUES = new Set(["package", "repository", "site"]);
 
 function formatCandidate(
   target: ResolveTargetReference,