diff --git a/php/Boot.php b/php/Boot.php
index 14565c4a..61898e04 100644
--- a/php/Boot.php
+++ b/php/Boot.php
@@ -115,6 +115,23 @@ public function register(): void
                 ]),
         );
 
+        // Alias the registry under dappcore/mcp's AgentResourceProvider name so
+        // that package's HTTP plans:// and sessions:// endpoints resolve it.
+        //
+        // A string, not ::class: this package keeps its own copy of Core\Mcp
+        // rather than depending on dappcore/mcp, so the interface cannot be
+        // named here — referencing it would resolve against this repo's own
+        // Core\Mcp tree, where it does not exist. mcp accepts a provider
+        // structurally for exactly this reason; the registry already satisfies
+        // its one method, read().
+        //
+        // Harmless when mcp is absent: nothing resolves the alias, and binding
+        // a container key costs nothing.
+        $this->app->alias(
+            AgentResourceRegistry::class,
+            'Core\\Mcp\\Resources\\Contracts\\AgentResourceProvider',
+        );
+
         $this->app->singleton(ForgejoService::class, function ($app) {
             return new ForgejoService(
                 baseUrl: (string) config('agentic.forge_url', 'https://forge.lthn.ai'),
diff --git a/php/tests/Feature/Mcp/Resources/AgentResourceProviderAliasTest.php b/php/tests/Feature/Mcp/Resources/AgentResourceProviderAliasTest.php
new file mode 100644
index 00000000..68818d4f
--- /dev/null
+++ b/php/tests/Feature/Mcp/Resources/AgentResourceProviderAliasTest.php
@@ -0,0 +1,51 @@
+<?php
+
+// SPDX-License-Identifier: EUPL-1.2
+
+declare(strict_types=1);
+
+use Core\Mod\Agentic\Models\AgentPlan;
+use Core\Mod\Agentic\Services\AgentResourceRegistry;
+
+/*
+|--------------------------------------------------------------------------
+| AgentResourceProvider alias
+|--------------------------------------------------------------------------
+|
+| dappcore/mcp's McpApiController resolves its plans:// and sessions:// content
+| from whatever is bound under Core\Mcp\Resources\Contracts\AgentResourceProvider.
+| This package keeps its own copy of Core\Mcp rather than depending on mcp, so
+| it cannot name that interface — it binds the registry under the name as a
+| string, and mcp accepts a provider structurally.
+|
+| Without this alias those two endpoint families answer not-found forever,
+| which is what "interim" quietly meant before it was made a decision.
+|
+*/
+
+const PROVIDER_KEY = 'Core\\Mcp\\Resources\\Contracts\\AgentResourceProvider';
+
+it('binds the registry under the provider key mcp resolves', function (): void {
+    expect(app()->bound(PROVIDER_KEY))->toBeTrue()
+        ->and(app(PROVIDER_KEY))->toBeInstanceOf(AgentResourceRegistry::class);
+});
+
+it('is the same instance as the registry itself', function (): void {
+    // An alias, not a second binding: two registries would drift.
+    expect(app(PROVIDER_KEY))->toBe(app(AgentResourceRegistry::class));
+});
+
+it('satisfies the one method mcp calls on it', function (): void {
+    AgentPlan::factory()->create(['slug' => 'aliased-plan', 'title' => 'Aliased Plan']);
+
+    $contents = app(PROVIDER_KEY)->read('plans://all');
+
+    expect($contents)->not->toBeNull()
+        ->and($contents['mimeType'])->toBe('text/markdown')
+        ->and($contents['text'])->toContain('aliased-plan');
+});
+
+it('reports nothing for a uri it does not serve', function (): void {
+    // mcp turns null into a clean not-found rather than a body saying so.
+    expect(app(PROVIDER_KEY)->read('nonsense://thing'))->toBeNull();
+});