Add Buildkite MCP server definition

Official Buildkite MCP server for CI/CD pipeline management. Trigger builds,
view logs, and manage agents. Uses Docker with buildkite/mcp-server image.

https://claude.ai/code/session_013AxurW8hPAfnUNvik354Xx

Author: its-mash

servers/com.buildkite-mcp.json

@@ -0,0 +1,64 @@
+{
+  "$schema": "../schemas/server-definition.schema.json",
+  "id": "com.buildkite-mcp",
+  "name": "Buildkite",
+  "alias": "buildkite",
+  "description": "Manage Buildkite pipelines, builds, jobs, and agents. Trigger builds, view logs, manage clusters, and monitor CI/CD workflows.",
+  "icon": "https://avatars.githubusercontent.com/u/5055988?v=4",
+  "schema_version": "2.1",
+  "categories": ["developer-tools"],
+  "tags": ["buildkite", "ci-cd", "pipelines", "builds", "testing", "deployment"],
+
+  "transport": {
+    "type": "stdio",
+    "command": "docker",
+    "args": ["run", "--pull=always", "-q", "-i", "--rm", "-e", "BUILDKITE_API_TOKEN", "buildkite/mcp-server", "stdio"],
+    "env": {
+      "BUILDKITE_API_TOKEN": "${input:BUILDKITE_API_TOKEN}"
+    },
+    "metadata": {
+      "inputs": [
+        {
+          "id": "BUILDKITE_API_TOKEN",
+          "label": "Buildkite API Token",
+          "description": "API access token for the Buildkite REST API.",
+          "type": "password",
+          "required": true,
+          "secret": true,
+          "placeholder": "bkua_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
+          "obtain": {
+            "url": "https://buildkite.com/user/api-access-tokens",
+            "instructions": "1. Go to buildkite.com > Personal Settings > API Access Tokens\n2. Click 'New API Access Token'\n3. Configure organization access and scopes\n4. Click 'Create Token' and copy it",
+            "button_label": "Create Token"
+          }
+        }
+      ]
+    }
+  },
+
+  "auth": {
+    "type": "api_key",
+    "instructions": "Create an API access token at https://buildkite.com/user/api-access-tokens"
+  },
+
+  "contributor": {
+    "name": "Buildkite",
+    "github": "buildkite",
+    "url": "https://buildkite.com"
+  },
+
+  "links": {
+    "repository": "https://github.com/buildkite/buildkite-mcp-server",
+    "homepage": "https://buildkite.com",
+    "documentation": "https://buildkite.com/docs/apis/mcp-server"
+  },
+
+  "platforms": ["all"],
+
+  "capabilities": {
+    "tools": true,
+    "resources": false,
+    "prompts": false,
+    "read_only_mode": false
+  }
+}