diff --git a/.claude/settings.json b/.claude/settings.json
index 675168b..54a06af 100644
--- a/.claude/settings.json
+++ b/.claude/settings.json
@@ -17,13 +17,9 @@
       "mcp__typescript-lsp__getDiagnostics",
       "mcp__typescript-lsp__traceType",
       "mcp__typescript-lsp__runTypeTests",
-      "mcp__typescript-lsp__checkInlineCode",
-      "mcp__vitest-server__set_project_root",
-      "mcp__vitest-server__list_tests",
-      "mcp__vitest-server__run_tests",
-      "mcp__vitest-server__analyze_coverage"
+      "mcp__typescript-lsp__checkInlineCode"
     ],
     "deny": []
   },
-  "enabledMcpjsonServers": ["vitest-server", "typescript-lsp", "eslint"]
+  "enabledMcpjsonServers": ["typescript-lsp", "eslint"]
 }
diff --git a/.mcp.json b/.mcp.json
index bb43cdd..4e0fd44 100644
--- a/.mcp.json
+++ b/.mcp.json
@@ -1,8 +1,5 @@
 {
   "mcpServers": {
-    "vitest-server": {
-      "command": "node_modules/.bin/vitest-mcp"
-    },
     "typescript-lsp": {
       "type": "stdio",
       "command": "node_modules/.bin/ts-lsp-mcp",
diff --git a/AGENTS.md b/AGENTS.md
index afe51d6..abdf9a4 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -28,7 +28,7 @@ This project uses npm scripts for all development tasks:
 - **Format check**: `npm run test:format` - Oxfmt format validation
 
 **Important**: Use the typescript-lsp MCP (`getDiagnostics`, `getTypeAtPosition`, `getDefinition`, etc.) for type information
-**Important**: Use the vitest-server MCP to run individual tests.
+**Important**: Run individual tests with `npx vitest --run <file>` (a path or a name filter), never the whole suite while iterating.
 **Important**: Use the eslint MCP to check for linting errors.
 
 ## Project Structure
diff --git a/package-lock.json b/package-lock.json
index a1008a9..3eb5250 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,6 @@
         "env-var": "^7.5.0"
       },
       "devDependencies": {
-        "@djankies/vitest-mcp": "0.5.1",
         "@eslint/mcp": "0.3.13",
         "@peerigon/configs": "^24.0.0",
         "@secretlint/secretlint-rule-preset-recommend": "^13.0.4",
@@ -486,30 +485,6 @@
         "node": ">=0.1.90"
       }
     },
-    "node_modules/@djankies/vitest-mcp": {
-      "version": "0.5.1",
-      "resolved": "https://registry.npmjs.org/@djankies/vitest-mcp/-/vitest-mcp-0.5.1.tgz",
-      "integrity": "sha512-v15xQjVLFmaHHnGv2Ig3K66GdQPcCdRFBzi+oRUDGtt7KCWKm6Baxx4MHyL0OuJlMZoQpFIjQUVxwmvTM5pFQQ==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@modelcontextprotocol/sdk": "^1.17.1"
-      },
-      "bin": {
-        "vitest-mcp": "dist/index.js"
-      },
-      "engines": {
-        "node": ">=18.0.0"
-      },
-      "peerDependencies": {
-        "vitest": ">=0.34.0"
-      },
-      "peerDependenciesMeta": {
-        "vitest": {
-          "optional": false
-        }
-      }
-    },
     "node_modules/@emnapi/core": {
       "version": "1.9.2",
       "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.9.2.tgz",
diff --git a/package.json b/package.json
index 8bd6bd3..b1dbd8a 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,6 @@
     "env-var": "^7.5.0"
   },
   "devDependencies": {
-    "@djankies/vitest-mcp": "0.5.1",
     "@eslint/mcp": "0.3.13",
     "@peerigon/configs": "^24.0.0",
     "@secretlint/secretlint-rule-preset-recommend": "^13.0.4",