diff --git a/packages/catalog/package.json b/packages/catalog/package.json
index ebdb326aa2a..35e62fabf1a 100644
--- a/packages/catalog/package.json
+++ b/packages/catalog/package.json
@@ -37,10 +37,9 @@
     "ember-modify-based-class-resource": "catalog:"
   },
   "scripts": {
-    "catalog:setup": "([ -d contents ] || git clone git@github.com:cardstack/boxel-catalog.git contents || git clone https://github.com/cardstack/boxel-catalog.git contents || { echo 'both ssh and https clone failed; check GitHub auth and network'; exit 1; }) && pnpm catalog:rewrite-legacy-aliases",
-    "catalog:update": "sh scripts/catalog-update.sh && pnpm catalog:rewrite-legacy-aliases",
+    "catalog:setup": "[ -d contents ] || git clone git@github.com:cardstack/boxel-catalog.git contents || git clone https://github.com/cardstack/boxel-catalog.git contents || { echo 'both ssh and https clone failed; check GitHub auth and network'; exit 1; }",
+    "catalog:update": "sh scripts/catalog-update.sh",
     "catalog:reset": "rm -rf contents && pnpm catalog:setup",
-    "catalog:rewrite-legacy-aliases": "node ./scripts/rewrite-legacy-aliases.mjs",
     "lint": "concurrently \"pnpm:lint:*(!fix)\" --names \"lint:\"",
     "lint:fix": "concurrently \"pnpm:lint:*:fix\" --names \"fix:\"",
     "lint:hbs": "ember-template-lint contents --no-error-on-unmatched-pattern",
diff --git a/packages/catalog/scripts/rewrite-legacy-aliases.mjs b/packages/catalog/scripts/rewrite-legacy-aliases.mjs
deleted file mode 100644
index 5734e836416..00000000000
--- a/packages/catalog/scripts/rewrite-legacy-aliases.mjs
+++ /dev/null
@@ -1,179 +0,0 @@
-#!/usr/bin/env node
-// Temporary shim for CS-10992: boxel-catalog still references some host
-// commands and field names that were renamed from URL-flavored to
-// identifier-flavored. This script rewrites the cloned `contents/` tree
-// in place after catalog:setup / catalog:update / catalog:reset so the
-// renamed surface resolves at load time.
-//
-// Edits are pinned to exact source spans so reruns are no-ops once the
-// strings are gone, and unintended matches in unrelated code are
-// impossible. Every edit must apply or the script fails loudly.
-//
-// Once the boxel-catalog PR landing the new surface is merged, delete
-// this file and remove its invocation from package.json. Tracked by
-// CS-11046.
-
-import { readFile, writeFile } from 'node:fs/promises';
-import { dirname, join } from 'node:path';
-import { fileURLToPath } from 'node:url';
-import { existsSync } from 'node:fs';
-
-const HERE = dirname(fileURLToPath(import.meta.url));
-const ROOT = join(HERE, '..', 'contents');
-
-if (!existsSync(ROOT)) {
-  console.log(`[rewrite-legacy-aliases] ${ROOT} not found, skipping.`);
-  process.exit(0);
-}
-
-// Each entry is [relativePath, [[oldString, newString], ...]].
-// The old strings include enough context to be unambiguous within the
-// file. If `oldString` is missing AND `newString` is already present,
-// the edit is a no-op (idempotent). If neither is present, that's a
-// failure — the file diverged from what the script expects.
-const REWRITES = [
-  [
-    'catalog-app/components/listing-fitted.gts',
-    [
-      [
-        'realmMeta.url !== this.args.model[realmURL]?.href,',
-        'realmMeta.realmIdentifier !== this.args.model[realmURL]?.href,',
-      ],
-      ['url: realmMeta.url,', 'url: realmMeta.realmIdentifier,'],
-    ],
-  ],
-  [
-    'catalog-app/listing/listing.gts',
-    [
-      [
-        'realmMeta.url !== this.args.model[realmURL]?.href,',
-        'realmMeta.realmIdentifier !== this.args.model[realmURL]?.href,',
-      ],
-      ['url: realmMeta.url,', 'url: realmMeta.realmIdentifier,'],
-    ],
-  ],
-  [
-    'commands/listing-create.ts',
-    [
-      [
-        "import GetCatalogRealmUrlsCommand from '@cardstack/boxel-host/commands/get-catalog-realm-urls';",
-        "import GetCatalogRealmIdentifiersCommand from '@cardstack/boxel-host/commands/get-catalog-realm-identifiers';",
-      ],
-      [
-        "import GetRealmOfUrlCommand from '@cardstack/boxel-host/commands/get-realm-of-url';",
-        "import GetRealmOfResourceIdentifierCommand from '@cardstack/boxel-host/commands/get-realm-of-resource-identifier';",
-      ],
-      [
-        'const { urls } = await new GetCatalogRealmUrlsCommand(',
-        'const { realmIdentifiers: urls } = await new GetCatalogRealmIdentifiersCommand(',
-      ],
-      [
-        'const { moduleUrls } = await new SanitizeModuleListCommand(\n      this.commandContext,\n    ).execute({ moduleUrls: Array.from(modulesToCreate) });',
-        'const { moduleIdentifiers: moduleUrls } = await new SanitizeModuleListCommand(\n      this.commandContext,\n    ).execute({ moduleIdentifiers: Array.from(modulesToCreate) });',
-      ],
-      [
-        'const { realmUrl: resourceRealmUrl } = await new GetRealmOfUrlCommand(\n      this.commandContext,\n    ).execute({ url: resourceUrl });',
-        'const { realmIdentifier: resourceRealmUrl } = await new GetRealmOfResourceIdentifierCommand(\n      this.commandContext,\n    ).execute({ resourceIdentifier: resourceUrl });',
-      ],
-    ],
-  ],
-  [
-    'commands/listing-install.ts',
-    [
-      [
-        'let { realmUrl } = await new ValidateRealmCommand(\n      this.commandContext,\n    ).execute({ realmUrl: realm });',
-        'let { realmIdentifier: realmUrl } = await new ValidateRealmCommand(\n      this.commandContext,\n    ).execute({ realmIdentifier: realm });',
-      ],
-      [
-        '.execute({ url: sourceCard.id });',
-        '.execute({ cardIdentifier: sourceCard.id });',
-      ],
-      [
-        '.execute({ realmUrl, operations }));',
-        '.execute({ realmIdentifier: realmUrl, operations }));',
-      ],
-    ],
-  ],
-  [
-    'commands/listing-use.ts',
-    [
-      [
-        'let { realmUrl } = await new ValidateRealmCommand(\n      this.commandContext,\n    ).execute({ realmUrl: realm });',
-        'let { realmIdentifier: realmUrl } = await new ValidateRealmCommand(\n      this.commandContext,\n    ).execute({ realmIdentifier: realm });',
-      ],
-    ],
-  ],
-  [
-    'commands/listing-remix.ts',
-    [
-      [
-        'let { realmUrl } = await new ValidateRealmCommand(\n      this.commandContext,\n    ).execute({ realmUrl: realm });',
-        'let { realmIdentifier: realmUrl } = await new ValidateRealmCommand(\n      this.commandContext,\n    ).execute({ realmIdentifier: realm });',
-      ],
-    ],
-  ],
-  [
-    'commands/listing-update-specs.ts',
-    [
-      [
-        'const { moduleUrls } = await new SanitizeModuleListCommand(\n      this.commandContext,\n    ).execute({ moduleUrls: deps });',
-        'const { moduleIdentifiers: moduleUrls } = await new SanitizeModuleListCommand(\n      this.commandContext,\n    ).execute({ moduleIdentifiers: deps });',
-      ],
-    ],
-  ],
-  [
-    'commands/collect-submission-files.ts',
-    [
-      [
-        'let binary = await readBinaryFileCommand.execute({\n            url: thumbnailUrl,\n          });',
-        'let binary = await readBinaryFileCommand.execute({\n            fileIdentifier: thumbnailUrl,\n          });',
-      ],
-      [
-        'let binary = await readBinaryFileCommand.execute({ url: fileDefUrl });',
-        'let binary = await readBinaryFileCommand.execute({ fileIdentifier: fileDefUrl });',
-      ],
-    ],
-  ],
-];
-
-let totalEdits = 0;
-let touchedFiles = 0;
-let errors = [];
-
-for (let [relPath, edits] of REWRITES) {
-  let path = join(ROOT, relPath);
-  if (!existsSync(path)) {
-    errors.push(`missing file: ${relPath}`);
-    continue;
-  }
-  let original = await readFile(path, 'utf8');
-  let updated = original;
-  let edited = false;
-  for (let [oldStr, newStr] of edits) {
-    if (updated.includes(oldStr)) {
-      updated = updated.split(oldStr).join(newStr);
-      edited = true;
-      totalEdits += 1;
-    } else if (!updated.includes(newStr)) {
-      errors.push(
-        `${relPath}: neither old nor new form found for edit:\n  old: ${JSON.stringify(oldStr.slice(0, 80))}...`,
-      );
-    }
-    // else: already rewritten — idempotent re-run
-  }
-  if (edited) {
-    await writeFile(path, updated);
-    touchedFiles += 1;
-    console.log(`  rewrote ${relPath}`);
-  }
-}
-
-if (errors.length) {
-  console.error('[rewrite-legacy-aliases] errors:');
-  for (let e of errors) console.error('  ' + e);
-  process.exit(1);
-}
-
-console.log(
-  `[rewrite-legacy-aliases] applied ${totalEdits} edit${totalEdits === 1 ? '' : 's'} across ${touchedFiles} file${touchedFiles === 1 ? '' : 's'}.`,
-);
diff --git a/packages/host/app/commands/get-available-realm-urls.ts b/packages/host/app/commands/get-available-realm-urls.ts
deleted file mode 100644
index c8c621d6b63..00000000000
--- a/packages/host/app/commands/get-available-realm-urls.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-// Deprecated alias kept for backwards compatibility with cards still
-// referencing the old URL-flavored module path. Remove once all
-// downstream consumers have been on the renamed path for at least one
-// release. Tracked by CS-11046.
-export { default } from './get-available-realm-identifiers';
diff --git a/packages/host/app/commands/get-catalog-realm-urls.ts b/packages/host/app/commands/get-catalog-realm-urls.ts
deleted file mode 100644
index 37440e1bab4..00000000000
--- a/packages/host/app/commands/get-catalog-realm-urls.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-// Deprecated alias kept for backwards compatibility with cards still
-// referencing the old URL-flavored module path. Remove once all
-// downstream consumers have been on the renamed path for at least one
-// release. Tracked by CS-11046.
-export { default } from './get-catalog-realm-identifiers';
diff --git a/packages/host/app/commands/get-realm-of-url.ts b/packages/host/app/commands/get-realm-of-url.ts
deleted file mode 100644
index a380a283161..00000000000
--- a/packages/host/app/commands/get-realm-of-url.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-// Deprecated alias kept for backwards compatibility with cards still
-// referencing the old URL-flavored module path. Remove once all
-// downstream consumers have been on the renamed path for at least one
-// release. Tracked by CS-11046.
-export { default } from './get-realm-of-resource-identifier';
diff --git a/packages/host/app/commands/index.ts b/packages/host/app/commands/index.ts
index 6b8d80960d6..a12c2e9db22 100644
--- a/packages/host/app/commands/index.ts
+++ b/packages/host/app/commands/index.ts
@@ -97,19 +97,6 @@ import * as ValidateRealmCommandModule from './validate-realm';
 import * as WriteBinaryFileCommandModule from './write-binary-file';
 import * as WriteTextFileCommandModule from './write-text-file';
 
-// Deprecated URL-flavored aliases kept for backwards compatibility with
-// boxel-skills/boxel-catalog cards still referencing the old module
-// paths. Each module is a thin re-export of its renamed counterpart.
-// Remove this block (imports + shimModule calls below + the .ts files
-// themselves) once downstream consumers have been on the renamed paths
-// for at least one release. Tracked by CS-11046.
-/* eslint-disable import/order */
-import * as GetRealmOfUrlCommandModule from './get-realm-of-url';
-import * as GetAvailableRealmUrlsCommandModule from './get-available-realm-urls';
-import * as GetCatalogRealmUrlsCommandModule from './get-catalog-realm-urls';
-import * as InvalidateRealmUrlsCommandModule from './invalidate-realm-urls';
-/* eslint-enable import/order */
-
 import type HostBaseCommand from '../lib/host-base-command';
 
 export function shimHostCommands(virtualNetwork: VirtualNetwork) {
@@ -501,25 +488,6 @@ export function shimHostCommands(virtualNetwork: VirtualNetwork) {
     '@cardstack/boxel-host/commands/set-user-system-card',
     SetUserSystemCardCommandModule,
   );
-
-  // Deprecated URL-flavored aliases — see the import-block comment for
-  // these modules above. Tracked by CS-11046.
-  virtualNetwork.shimModule(
-    '@cardstack/boxel-host/commands/get-realm-of-url',
-    GetRealmOfUrlCommandModule,
-  );
-  virtualNetwork.shimModule(
-    '@cardstack/boxel-host/commands/get-available-realm-urls',
-    GetAvailableRealmUrlsCommandModule,
-  );
-  virtualNetwork.shimModule(
-    '@cardstack/boxel-host/commands/get-catalog-realm-urls',
-    GetCatalogRealmUrlsCommandModule,
-  );
-  virtualNetwork.shimModule(
-    '@cardstack/boxel-host/commands/invalidate-realm-urls',
-    InvalidateRealmUrlsCommandModule,
-  );
 }
 
 // Note - this is used for the tests
diff --git a/packages/host/app/commands/invalidate-realm-urls.ts b/packages/host/app/commands/invalidate-realm-urls.ts
deleted file mode 100644
index dacd52bd93b..00000000000
--- a/packages/host/app/commands/invalidate-realm-urls.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-// Deprecated alias kept for backwards compatibility with cards still
-// referencing the old URL-flavored module path. Remove once all
-// downstream consumers have been on the renamed path for at least one
-// release. Tracked by CS-11046.
-export { default } from './invalidate-realm-identifiers';
diff --git a/packages/host/memory-baseline.json b/packages/host/memory-baseline.json
index 318cd20c3a0..04c4e3c117f 100644
--- a/packages/host/memory-baseline.json
+++ b/packages/host/memory-baseline.json
@@ -303,24 +303,15 @@
     "Integration | commands | get-available-realm-identifiers": {
       "delta_mb": -2.2
     },
-    "Integration | commands | get-available-realm-urls": {
-      "delta_mb": -4.3
-    },
     "Integration | commands | get-catalog-realm-identifiers": {
       "delta_mb": 0.6
     },
-    "Integration | commands | get-catalog-realm-urls": {
-      "delta_mb": -11.9
-    },
     "Integration | commands | get-default-writable-realm": {
       "delta_mb": 7
     },
     "Integration | commands | get-realm-of-resource-identifier": {
       "delta_mb": 0
     },
-    "Integration | commands | get-realm-of-url": {
-      "delta_mb": 0.2
-    },
     "Integration | commands | get-user-system-card": {
       "delta_mb": 0.3
     },
@@ -330,9 +321,6 @@
     "Integration | commands | invalidate-realm-identifiers": {
       "delta_mb": -16
     },
-    "Integration | commands | invalidate-realm-urls": {
-      "delta_mb": -9.9
-    },
     "Integration | commands | invite-user-to-room": {
       "delta_mb": 6.1
     },
diff --git a/packages/skills-realm/package.json b/packages/skills-realm/package.json
index 3767c08608e..712758a2ce2 100644
--- a/packages/skills-realm/package.json
+++ b/packages/skills-realm/package.json
@@ -3,9 +3,8 @@
   "version": "1.0.0",
   "license": "MIT",
   "scripts": {
-    "skills:setup": "([ -d contents ] || (git clone git@github.com:cardstack/boxel-skills.git contents || git clone https://github.com/cardstack/boxel-skills.git contents)) && pnpm skills:rewrite-legacy-aliases",
-    "skills:update": "pnpm skills:setup && cd contents && git pull && cd .. && pnpm skills:rewrite-legacy-aliases",
-    "skills:reset": "rm -rf contents && pnpm skills:setup",
-    "skills:rewrite-legacy-aliases": "node ./scripts/rewrite-legacy-aliases.mjs"
+    "skills:setup": "[ -d contents ] || git clone git@github.com:cardstack/boxel-skills.git contents || git clone https://github.com/cardstack/boxel-skills.git contents",
+    "skills:update": "pnpm skills:setup && cd contents && git pull",
+    "skills:reset": "rm -rf contents && pnpm skills:setup"
   }
 }
diff --git a/packages/skills-realm/scripts/rewrite-legacy-aliases.mjs b/packages/skills-realm/scripts/rewrite-legacy-aliases.mjs
deleted file mode 100644
index 072e948b39a..00000000000
--- a/packages/skills-realm/scripts/rewrite-legacy-aliases.mjs
+++ /dev/null
@@ -1,71 +0,0 @@
-#!/usr/bin/env node
-// Temporary shim for CS-10992: boxel-skills cards reference some host
-// commands by their old URL-flavored module paths. This script rewrites
-// the cloned `contents/` tree in place so the renamed commands resolve
-// when skills are loaded.
-//
-// Runs after `skills:setup` / `skills:update` / `skills:reset`. Once the
-// boxel-skills PR landing the new paths is merged, delete this file
-// and remove its invocation from package.json. Tracked by CS-11046.
-
-import { readdir, readFile, writeFile, stat } from 'node:fs/promises';
-import { join } from 'node:path';
-import { fileURLToPath } from 'node:url';
-import { existsSync } from 'node:fs';
-
-const ALIASES = [
-  [
-    '@cardstack/boxel-host/commands/get-realm-of-url',
-    '@cardstack/boxel-host/commands/get-realm-of-resource-identifier',
-  ],
-  [
-    '@cardstack/boxel-host/commands/get-available-realm-urls',
-    '@cardstack/boxel-host/commands/get-available-realm-identifiers',
-  ],
-  [
-    '@cardstack/boxel-host/commands/get-catalog-realm-urls',
-    '@cardstack/boxel-host/commands/get-catalog-realm-identifiers',
-  ],
-  [
-    '@cardstack/boxel-host/commands/invalidate-realm-urls',
-    '@cardstack/boxel-host/commands/invalidate-realm-identifiers',
-  ],
-];
-
-const ROOT = fileURLToPath(new URL('../contents', import.meta.url));
-
-if (!existsSync(ROOT)) {
-  console.log(`[rewrite-legacy-aliases] ${ROOT} not found, skipping.`);
-  process.exit(0);
-}
-
-async function* walkJson(dir) {
-  for (let entry of await readdir(dir)) {
-    if (entry === '.git') continue;
-    let full = join(dir, entry);
-    let s = await stat(full);
-    if (s.isDirectory()) {
-      yield* walkJson(full);
-    } else if (s.isFile() && entry.endsWith('.json')) {
-      yield full;
-    }
-  }
-}
-
-let rewritten = 0;
-for await (let path of walkJson(ROOT)) {
-  let original = await readFile(path, 'utf8');
-  let updated = original;
-  for (let [from, to] of ALIASES) {
-    updated = updated.split(from).join(to);
-  }
-  if (updated !== original) {
-    await writeFile(path, updated);
-    rewritten += 1;
-    console.log(`  rewrote ${path}`);
-  }
-}
-
-console.log(
-  `[rewrite-legacy-aliases] updated ${rewritten} file${rewritten === 1 ? '' : 's'}.`,
-);