diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index c7d39e8bb5099..ea4f544dab000 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -496,6 +496,7 @@ src/platform/packages/shared/kbn-connector-schemas @elastic/response-ops
 src/platform/packages/shared/kbn-connector-specs @elastic/response-ops
 src/platform/packages/shared/kbn-content-management-utils @elastic/kibana-data-discovery
 src/platform/packages/shared/kbn-core-server-benchmarks @elastic/kibana-core
+src/platform/packages/shared/kbn-cps-server-utils @elastic/kibana-core
 src/platform/packages/shared/kbn-cps-utils @elastic/kibana-presentation
 src/platform/packages/shared/kbn-crypto @elastic/kibana-security
 src/platform/packages/shared/kbn-crypto-browser @elastic/kibana-core
diff --git a/package.json b/package.json
index cc7c2c5cbe3f9..585cb944c57e2 100644
--- a/package.json
+++ b/package.json
@@ -498,6 +498,7 @@
     "@kbn/core-user-settings-server-internal": "link:src/core/packages/user-settings/server-internal",
     "@kbn/core-user-settings-server-mocks": "link:src/core/packages/user-settings/server-mocks",
     "@kbn/cps": "link:src/platform/plugins/shared/cps",
+    "@kbn/cps-server-utils": "link:src/platform/packages/shared/kbn-cps-server-utils",
     "@kbn/cps-utils": "link:src/platform/packages/shared/kbn-cps-utils",
     "@kbn/cross-cluster-replication-plugin": "link:x-pack/platform/plugins/private/cross_cluster_replication",
     "@kbn/crypto": "link:src/platform/packages/shared/kbn-crypto",
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/README.md b/src/platform/packages/shared/kbn-cps-server-utils/README.md
new file mode 100644
index 0000000000000..4d0f97cc21775
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/README.md
@@ -0,0 +1,20 @@
+# @kbn/cps-server-utils
+
+Server-side Cross-Project Search (CPS) utilities.
+
+## `getSpaceNPRE`
+
+Returns the Named Project Routing Expression (NPRE) for a given space, using the convention `kibana_space_${spaceId}_default`.
+
+Accepts either a `spaceId` string or a `KibanaRequest` (from which the space is derived via the request URL path, without a dependency on the `spaces` plugin).
+
+```ts
+import { getSpaceNPRE } from '@kbn/cps-server-utils';
+
+// From a space ID string
+getSpaceNPRE('my-space');  // 'kibana_space_my-space_default'
+getSpaceNPRE('');          // 'kibana_space_default_default'
+
+// From a KibanaRequest (extracts space from the URL path)
+getSpaceNPRE(request);     // e.g. 'kibana_space_my-space_default'
+```
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/index.ts b/src/platform/packages/shared/kbn-cps-server-utils/index.ts
new file mode 100644
index 0000000000000..8b287ce8cfc30
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/index.ts
@@ -0,0 +1,10 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+export { getSpaceNPRE } from './src/get_space_npre';
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/jest.config.js b/src/platform/packages/shared/kbn-cps-server-utils/jest.config.js
new file mode 100644
index 0000000000000..3b58292c01e3f
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/jest.config.js
@@ -0,0 +1,14 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+module.exports = {
+  preset: '@kbn/test/jest_node',
+  rootDir: '../../../../..',
+  roots: ['<rootDir>/src/platform/packages/shared/kbn-cps-server-utils'],
+};
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/kibana.jsonc b/src/platform/packages/shared/kbn-cps-server-utils/kibana.jsonc
new file mode 100644
index 0000000000000..7f78db4117572
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/kibana.jsonc
@@ -0,0 +1,9 @@
+{
+  "type": "shared-server",
+  "id": "@kbn/cps-server-utils",
+  "owner": [
+    "@elastic/kibana-core"
+  ],
+  "group": "platform",
+  "visibility": "shared"
+}
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/moon.yml b/src/platform/packages/shared/kbn-cps-server-utils/moon.yml
new file mode 100644
index 0000000000000..d7016eb59962a
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/moon.yml
@@ -0,0 +1,46 @@
+# This file is generated by the @kbn/moon package. Any manual edits will be erased!
+#  To extend this, write your extensions/overrides to 'moon.extend.yml'
+#  then regenerate this file with: 'node scripts/regenerate_moon_projects.js --update --filter @kbn/cps-server-utils'
+
+$schema: https://moonrepo.dev/schemas/project.json
+id: '@kbn/cps-server-utils'
+type: unknown
+owners:
+  defaultOwner: '@elastic/kibana-core'
+toolchain:
+  default: node
+language: typescript
+project:
+  name: '@kbn/cps-server-utils'
+  description: Moon project for @kbn/cps-server-utils
+  channel: ''
+  owner: '@elastic/kibana-core'
+  metadata:
+    sourceRoot: src/platform/packages/shared/kbn-cps-server-utils
+dependsOn:
+  - '@kbn/core-http-server'
+  - '@kbn/spaces-utils'
+tags:
+  - shared-server
+  - package
+  - prod
+  - group-platform
+  - shared
+  - jest-unit-tests
+fileGroups:
+  src:
+    - '**/*'
+    - '!target/**/*'
+tasks:
+  jest:
+    args:
+      - '--config'
+      - $projectRoot/jest.config.js
+    inputs:
+      - '@group(src)'
+  jestCI:
+    args:
+      - '--config'
+      - $projectRoot/jest.config.js
+    inputs:
+      - '@group(src)'
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/package.json b/src/platform/packages/shared/kbn-cps-server-utils/package.json
new file mode 100644
index 0000000000000..194ec935c35cc
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "@kbn/cps-server-utils",
+  "version": "1.0.0",
+  "private": true,
+  "license": "Elastic License 2.0 OR AGPL-3.0-only OR SSPL-1.0",
+  "sideEffects": false
+}
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/src/get_space_npre.test.ts b/src/platform/packages/shared/kbn-cps-server-utils/src/get_space_npre.test.ts
new file mode 100644
index 0000000000000..de76db5f56742
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/src/get_space_npre.test.ts
@@ -0,0 +1,42 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+import type { KibanaRequest } from '@kbn/core-http-server';
+import { getSpaceNPRE } from './get_space_npre';
+
+const mockRequest = (pathname: string) =>
+  ({ url: new URL(`http://localhost:5601${pathname}`) } as unknown as KibanaRequest);
+
+describe('getSpaceNPRE', () => {
+  describe('when called with a spaceId string', () => {
+    it('returns the NPRE for the given space', () => {
+      expect(getSpaceNPRE('my-space')).toBe('kibana_space_my-space_default');
+    });
+
+    it('uses "default" when spaceId is an empty string', () => {
+      expect(getSpaceNPRE('')).toBe('kibana_space_default_default');
+    });
+
+    it('returns the NPRE for the default space when spaceId is "default"', () => {
+      expect(getSpaceNPRE('default')).toBe('kibana_space_default_default');
+    });
+  });
+
+  describe('when called with a KibanaRequest', () => {
+    it('extracts the space from the request URL and returns the NPRE', () => {
+      expect(getSpaceNPRE(mockRequest('/s/my-space/api/foo'))).toBe(
+        'kibana_space_my-space_default'
+      );
+    });
+
+    it('returns the default space NPRE when the request URL has no space segment', () => {
+      expect(getSpaceNPRE(mockRequest('/api/foo'))).toBe('kibana_space_default_default');
+    });
+  });
+});
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/src/get_space_npre.ts b/src/platform/packages/shared/kbn-cps-server-utils/src/get_space_npre.ts
new file mode 100644
index 0000000000000..35fcb8781a04a
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/src/get_space_npre.ts
@@ -0,0 +1,20 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+import type { KibanaRequest } from '@kbn/core-http-server';
+import { DEFAULT_SPACE_ID, getSpaceIdFromPath } from '@kbn/spaces-utils';
+
+export function getSpaceNPRE(spaceIdOrRequest: string | KibanaRequest): string {
+  const spaceId =
+    typeof spaceIdOrRequest === 'string'
+      ? spaceIdOrRequest || DEFAULT_SPACE_ID
+      : getSpaceIdFromPath(spaceIdOrRequest.url.pathname).spaceId;
+
+  return `kibana_space_${spaceId}_default`;
+}
diff --git a/src/platform/packages/shared/kbn-cps-server-utils/tsconfig.json b/src/platform/packages/shared/kbn-cps-server-utils/tsconfig.json
new file mode 100644
index 0000000000000..7cf571130aa4e
--- /dev/null
+++ b/src/platform/packages/shared/kbn-cps-server-utils/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "extends": "@kbn/tsconfig-base/tsconfig.json",
+  "compilerOptions": {
+    "outDir": "target/types",
+  },
+  "include": [
+    "**/*",
+    "../../../../../typings/**/*",
+  ],
+  "kbn_references": [
+    "@kbn/core-http-server",
+    "@kbn/spaces-utils",
+  ],
+  "exclude": [
+    "target/**/*"
+  ]
+}
diff --git a/tsconfig.base.json b/tsconfig.base.json
index e924e2c5b7a44..2fc4aa54147e8 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -840,6 +840,8 @@
       "@kbn/core-user-settings-server-mocks/*": ["src/core/packages/user-settings/server-mocks/*"],
       "@kbn/cps": ["src/platform/plugins/shared/cps"],
       "@kbn/cps/*": ["src/platform/plugins/shared/cps/*"],
+      "@kbn/cps-server-utils": ["src/platform/packages/shared/kbn-cps-server-utils"],
+      "@kbn/cps-server-utils/*": ["src/platform/packages/shared/kbn-cps-server-utils/*"],
       "@kbn/cps-utils": ["src/platform/packages/shared/kbn-cps-utils"],
       "@kbn/cps-utils/*": ["src/platform/packages/shared/kbn-cps-utils/*"],
       "@kbn/cross-cluster-replication-plugin": ["x-pack/platform/plugins/private/cross_cluster_replication"],
diff --git a/yarn.lock b/yarn.lock
index d01d17b2a8776..284677d61ad48 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2705,7 +2705,7 @@
   resolved "https://registry.yarnpkg.com/@elastic/filesaver/-/filesaver-1.1.2.tgz#1998ffb3cd89c9da4ec12a7793bfcae10e30c77a"
   integrity sha512-YZbSufYFBhAj+S2cJgiKALoxIJevqXN2MSr6Yqr42rJdaPuM31cj6pUDwflkql1oDjupqD9la+MfxPFjXI1JFQ==
 
-"@elastic/kibana-d3-color@npm:@elastic/kibana-d3-color@2.0.1", "d3-color@1 - 2", "d3-color@npm:@elastic/kibana-d3-color@2.0.1":
+"@elastic/kibana-d3-color@npm:@elastic/kibana-d3-color@2.0.1":
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/@elastic/kibana-d3-color/-/kibana-d3-color-2.0.1.tgz#f83b9c2fea09273a918659de04d5e8098c82f65c"
   integrity sha512-YZ8hV2bWNyYi833Yj3UWczmTxdHzmo/Xc2IVkNXr/ZqtkrTDlTLysCyJm7SfAt9iBy6EVRGWTn8cPz8QOY6Ixw==
@@ -6357,6 +6357,10 @@
   version "0.0.0"
   uid ""
 
+"@kbn/cps-server-utils@link:src/platform/packages/shared/kbn-cps-server-utils":
+  version "0.0.0"
+  uid ""
+
 "@kbn/cps-utils@link:src/platform/packages/shared/kbn-cps-utils":
   version "0.0.0"
   uid ""
@@ -19053,6 +19057,11 @@ d3-collection@^1.0.7:
   resolved "https://registry.yarnpkg.com/d3-collection/-/d3-collection-1.0.7.tgz#349bd2aa9977db071091c13144d5e4f16b5b310e"
   integrity sha512-ii0/r5f4sjKNTfh84Di+DpztYwqKhEyUlKoPrzUFfeSkWxjW49xU2QzO9qrPrNkpdI0XJkfzvmTu8V2Zylln6A==
 
+"d3-color@1 - 2", "d3-color@npm:@elastic/kibana-d3-color@2.0.1":
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/@elastic/kibana-d3-color/-/kibana-d3-color-2.0.1.tgz#f83b9c2fea09273a918659de04d5e8098c82f65c"
+  integrity sha512-YZ8hV2bWNyYi833Yj3UWczmTxdHzmo/Xc2IVkNXr/ZqtkrTDlTLysCyJm7SfAt9iBy6EVRGWTn8cPz8QOY6Ixw==
+
 "d3-color@1 - 3", d3-color@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/d3-color/-/d3-color-3.1.0.tgz#395b2833dfac71507f12ac2f7af23bf819de24e2"
@@ -32379,7 +32388,7 @@ string-length@^4.0.1:
     char-regex "^1.0.2"
     strip-ansi "^6.0.0"
 
-"string-width-cjs@npm:string-width@^4.2.0", string-width@^4.1.0, string-width@^4.2.0, string-width@^4.2.3:
+"string-width-cjs@npm:string-width@^4.2.0":
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
   integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
@@ -32397,6 +32406,15 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
+string-width@^4.1.0, string-width@^4.2.0, string-width@^4.2.3:
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
+  integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
+  dependencies:
+    emoji-regex "^8.0.0"
+    is-fullwidth-code-point "^3.0.0"
+    strip-ansi "^6.0.1"
+
 string-width@^5.0.1, string-width@^5.1.2:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-5.1.2.tgz#14f8daec6d81e7221d2a357e668cab73bdbca794"
@@ -32489,7 +32507,14 @@ stringify-object@^3.2.1:
     is-obj "^1.0.1"
     is-regexp "^1.0.0"
 
-"strip-ansi-cjs@npm:strip-ansi@^6.0.1", strip-ansi@6.0.1, strip-ansi@^6.0.0, strip-ansi@^6.0.1:
+"strip-ansi-cjs@npm:strip-ansi@^6.0.1":
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
+  integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
+  dependencies:
+    ansi-regex "^5.0.1"
+
+strip-ansi@6.0.1, strip-ansi@^6.0.0, strip-ansi@^6.0.1:
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
   integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
@@ -35301,7 +35326,7 @@ workerpool@^6.5.1:
   resolved "https://registry.yarnpkg.com/workerpool/-/workerpool-6.5.1.tgz#060f73b39d0caf97c6db64da004cd01b4c099544"
   integrity sha512-Fs4dNYcsdpYSAfVxhnl1L5zTksjvOJxtC5hzMNl+1t9B8hTJTdKDyZ5ju7ztgPy+ft9tBFXoOlDNiOT9WUXZlA==
 
-"wrap-ansi-cjs@npm:wrap-ansi@^7.0.0", wrap-ansi@^7.0.0:
+"wrap-ansi-cjs@npm:wrap-ansi@^7.0.0":
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
   integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
@@ -35327,6 +35352,15 @@ wrap-ansi@^6.0.1, wrap-ansi@^6.2.0:
     string-width "^4.1.0"
     strip-ansi "^6.0.0"
 
+wrap-ansi@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
+  integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
+  dependencies:
+    ansi-styles "^4.0.0"
+    string-width "^4.1.0"
+    strip-ansi "^6.0.0"
+
 wrap-ansi@^8.1.0:
   version "8.1.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-8.1.0.tgz#56dc22368ee570face1b49819975d9b9a5ead214"