feat: add Upstash MCP server definition (#80)

* Add Upstash MCP server definition

Official Upstash MCP server for Redis database management. Create databases,
manage backups, and view usage stats. Uses @upstash/mcp-server npm package.

https://claude.ai/code/session_013AxurW8hPAfnUNvik354Xx

* fix: update server definition (input type 'password' -> 'text' for UPSTASH_API_KEY)

* fix: rename server files with transport suffix

- com.upstash-mcp.json -> com.upstash-mcp-npx.json (id: com.upstash-mcp-npx)

Signed-off-by: Mohammod Al Amin Ashik <maa.ashik00@gmail.com>

---------

Signed-off-by: Mohammod Al Amin Ashik <maa.ashik00@gmail.com>

Author: its-mash

servers/com.upstash-mcp-npx.json

@@ -0,0 +1,88 @@
+{
+  "$schema": "../schemas/server-definition.schema.json",
+  "id": "com.upstash-mcp-npx",
+  "name": "Upstash (npx)",
+  "alias": "upstash",
+  "description": "Create and manage Upstash Redis databases. List databases, create backups, view usage stats, and manage credentials.",
+  "icon": "https://avatars.githubusercontent.com/u/74989412?v=4",
+  "schema_version": "2.1",
+  "categories": [
+    "database",
+    "cloud"
+  ],
+  "tags": [
+    "upstash",
+    "redis",
+    "serverless",
+    "database",
+    "cache",
+    "cloud"
+  ],
+  "transport": {
+    "type": "stdio",
+    "command": "npx",
+    "args": [
+      "-y",
+      "@upstash/mcp-server@latest",
+      "--email",
+      "${input:UPSTASH_EMAIL}",
+      "--api-key",
+      "${input:UPSTASH_API_KEY}"
+    ],
+    "metadata": {
+      "inputs": [
+        {
+          "id": "UPSTASH_EMAIL",
+          "label": "Upstash Email",
+          "description": "Email address associated with your Upstash account.",
+          "type": "text",
+          "required": true,
+          "secret": false,
+          "placeholder": "you@example.com",
+          "obtain": {
+            "url": "https://console.upstash.com",
+            "instructions": "Use the email address you registered with at console.upstash.com",
+            "button_label": "Open Console"
+          }
+        },
+        {
+          "id": "UPSTASH_API_KEY",
+          "label": "Upstash API Key",
+          "description": "Developer API key for the Upstash management API.",
+          "type": "text",
+          "required": true,
+          "secret": true,
+          "placeholder": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
+          "obtain": {
+            "url": "https://console.upstash.com/account/api",
+            "instructions": "1. Go to console.upstash.com/account/api\n2. Copy your Management API key",
+            "button_label": "Get API Key"
+          }
+        }
+      ]
+    }
+  },
+  "auth": {
+    "type": "api_key",
+    "instructions": "Get your email and API key from https://console.upstash.com/account/api"
+  },
+  "contributor": {
+    "name": "Upstash",
+    "github": "upstash",
+    "url": "https://upstash.com"
+  },
+  "links": {
+    "repository": "https://github.com/upstash/mcp-server",
+    "homepage": "https://upstash.com",
+    "documentation": "https://upstash.com/docs/redis/integrations/mcp"
+  },
+  "platforms": [
+    "all"
+  ],
+  "capabilities": {
+    "tools": true,
+    "resources": false,
+    "prompts": false,
+    "read_only_mode": false
+  }
+}