modelcontextprotocol · dsp-ant · Jun 4, 2026 · Jun 3, 2026 · Jun 3, 2026 · Jun 3, 2026
@@ -33,7 +33,7 @@ The request carries no body parameters beyond the standard `_meta`:
 ## Response
 
 The server replies with its supported protocol versions, capabilities, and
-identity:
+identity. This operation supports [caching](/specification/draft/server/utilities/caching).
 
 ```json
 {
@@ -50,7 +50,9 @@ identity:
       "name": "ExampleServer",
       "version": "1.0.0"
     },
-    "instructions": "This server provides weather and resource utilities."
+    "instructions": "This server provides weather and resource utilities.",
+    "ttlMs": 3600000,
+    "cacheScope": "public"
   }
 }
 ```

@@ -59,7 +59,7 @@ per-request input, not connection state.
 ### Listing Prompts
 
 To retrieve available prompts, clients send a `prompts/list` request. This operation
-supports [pagination](/specification/draft/server/utilities/pagination).
+supports [pagination](/specification/draft/server/utilities/pagination) and [caching](/specification/draft/server/utilities/caching).
 
 **Request:**
 

@@ -76,7 +76,7 @@ per-request input, not connection state.
 ### Listing Resources
 
 To discover available resources, clients send a `resources/list` request. This operation
-supports [pagination](/specification/draft/server/utilities/pagination).
+supports [pagination](/specification/draft/server/utilities/pagination) and [caching](/specification/draft/server/utilities/caching).
 
 **Request:**
 
@@ -124,7 +124,8 @@ supports [pagination](/specification/draft/server/utilities/pagination).
 
 ### Reading Resources
 
-To retrieve resource contents, clients send a `resources/read` request:
+To retrieve resource contents, clients send a `resources/read` request. This operation
+supports [caching](/specification/draft/server/utilities/caching).
 
 **Request:**
 
@@ -173,7 +174,7 @@ Alternatively, if the scheme of `uri` is `https://`, clients may fetch the resou
 Resource templates allow servers to expose parameterized resources using
 [URI templates](https://datatracker.ietf.org/doc/html/rfc6570). Arguments may be
 auto-completed through [the completion API](/specification/draft/server/utilities/completion).
-This operation supports [pagination](/specification/draft/server/utilities/pagination).
+This operation supports [pagination](/specification/draft/server/utilities/pagination) and [caching](/specification/draft/server/utilities/caching).
 
 **Request:**
 

@@ -69,7 +69,7 @@ are included in model context.
 ### Listing Tools
 
 To discover available tools, clients send a `tools/list` request. This operation supports
-[pagination](/specification/draft/server/utilities/pagination).
+[pagination](/specification/draft/server/utilities/pagination) and [caching](/specification/draft/server/utilities/caching).
 
 **Request:**
 

@@ -4,15 +4,15 @@ title: Caching
 
 <div id="enable-section-numbers" />
 
-The Model Context Protocol (MCP) supports caching on list and
-resource read results. This allows clients to cache responses and reduce unnecessary re-fetching.
+The Model Context Protocol (MCP) supports caching for some results. This allows clients to cache responses and reduce unnecessary re-fetching.
 Caching is complementary to [change notifications](#interaction-with-notifications)&mdash;both
 mechanisms can coexist.
 
 ## Cacheable Results
 
 Servers MUST include caching hints on results returned by the following operations:
 
+- `server/discover`
 - `tools/list`
 - `prompts/list`
 - `resources/list`
@@ -23,7 +23,7 @@ Servers MUST include caching hints on results returned by the following operatio
 
 Cacheable Results in MCP use two fields to provide caching hints to clients:
 
-- The <b>Time-to-live (TTL) Field</b>,`ttlMs`, indicates how long the client MAY consider the result fresh.
+- The <b>Time-to-live (TTL) Field</b>,`ttlMs`, is an integer value in milliseconds specifying how long the client MAY consider the result fresh.
 - The <b>Cache Scope Field</b>,`cacheScope`, indicates the intended scope of the cached response, either `"public"` or `"private"`.
 
 ### Time-to-Live (TTL) Field

@@ -9,5 +9,7 @@
     "name": "ExampleServer",
     "version": "1.0.0"
   },
-  "instructions": "This server provides weather and resource utilities. Prefer `get_weather` for forecast lookups."
+  "instructions": "This server provides weather and resource utilities. Prefer `get_weather` for forecast lookups.",
+  "ttlMs": 3600000,
+  "cacheScope": "public"
 }
@@ -11,6 +11,8 @@
     "serverInfo": {
       "name": "ExampleServer",
       "version": "1.0.0"
-    }
+    },
+    "ttlMs": 3600000,
+    "cacheScope": "public"
   }
 }
@@ -581,7 +581,7 @@ export interface DiscoverRequest extends JSONRPCRequest {
  *
  * @category `server/discover`
  */
-export interface DiscoverResult extends Result {
+export interface DiscoverResult extends CacheableResult {
   /**
    * MCP Protocol Versions this server supports. The client should choose a
    * version from this list for use in subsequent requests.