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DrissionPage MCP Server

by jumodada
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Type Text

element_type
Destructive

Type text into an input element identified by CSS, XPath, or accessibility targeting, optionally clearing existing content first for automated browser form filling.

Instructions

Type text into an input element

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
textYesText to type into the element
clearNoClear existing input content before typing
tab_idNoOptional MCP or native DrissionPage tab id. When omitted, the current tab is captured at call start.
observeNoReturn a compact before/after page change summary.
timeoutNoTimeout in seconds to wait for element
selectorYesCSS selector or XPath to find the input element. Bare selectors are CSS; use text:... for text matching or explicit tag:/css:/xpath:/@attr locators.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv0.8.8
    • addedInput schema / properties / tab_id
      Added value: +{
+  "anyOf": [
+    {
+      "maxLength": 128,
+      "minLength": 1,
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Optional MCP or native DrissionPage tab id. When omitted, the current tab is captured at call start.",
+  "title": "Tab Id"
+}
    • changedOutput schema / oneOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "data": {
-        "additionalProperties": false,
-        "properties": {
-          "changes": {
-            "anyOf": [
-              {
-                "additionalProperties": true,
-                "type": "object"
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "default": null,
-            "title": "Changes"
-          },
-          "cleared": {
-            "title": "Cleared",
-            "type": "boolean"
-          },
-          "exact": {
-            "anyOf": [
-              {
-                "type": "boolean"
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "default": null,
-            "title": "Exact"
-          },
-          "frame_selectors": {
-            "items": {
-              "type": "string"
-            },
-            "title": "Frame Selectors",
-            "type": "array"
-          },
-          "locator": {
-            "title": "Locator",
-            "type": "string"
-          },
-          "name": {
-            "anyOf": [
-              {
-                "type": "string"
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "default": null,
-            "title": "Name"
-          },
-          "role": {
-            "anyOf": [
-              {
-                "type": "string"
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "default": null,
-            "title": "Role"
-          },
-          "selector": {
-            "title": "Selector",
-            "type": "string"
-          },
-          "selector_normalized": {
-            "title": "Selector Normalized",
-            "type": "boolean"
-          },
-          "selector_strategy": {
-            "title": "Selector Strategy",
-            "type": "string"
-          },
-          "shadow_hosts": {
-            "items": {
-              "type": "string"
-            },
-            "title": "Shadow Hosts",
-            "type": "array"
-          },
-          "target_kind": {
-            "default": "selector",
-            "enum": [
-              "selector",
-              "accessibility"
-            ],
-            "title": "Target Kind",
-            "type": "string"
-          },
-          "typed": {
-            "const": true,
-            "title": "Typed",
-            "type": "boolean"
-          }
-        },
-        "required": [
-          "selector",
-          "locator",
-          "selector_strategy",
-          "selector_normalized",
-          "typed",
-          "cleared"
-        ],
-        "title": "ElementTypeData",
-        "type": "object"
-      },
-      "message": {
-        "type": "string"
-      },
-      "ok": {
-        "const": true
-      }
-    },
-    "required": [
-      "ok",
-      "message",
-      "data"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "data": {
-        "additionalProperties": true,
-        "type": "object"
-      },
-      "error": {
-        "additionalProperties": false,
-        "properties": {
-          "code": {
-            "type": "string"
-          },
-          "details": {
-            "additionalProperties": true,
-            "type": "object"
-          },
-          "message": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "code",
-          "message"
-        ],
-        "type": "object"
-      },
-      "message": {
-        "type": "string"
-      },
-      "ok": {
-        "const": false
-      }
-    },
-    "required": [
-      "ok",
-      "message",
-      "error"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "data": {
+        "additionalProperties": false,
+        "properties": {
+          "changes": {
+            "anyOf": [
+              {
+                "additionalProperties": true,
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "default": null,
+            "title": "Changes"
+          },
+          "cleared": {
+            "title": "Cleared",
+            "type": "boolean"
+          },
+          "exact": {
+            "anyOf": [
+              {
+                "type": "boolean"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "default": null,
+            "title": "Exact"
+          },
+          "frame_selectors": {
+            "items": {
+              "type": "string"
+            },
+            "title": "Frame Selectors",
+            "type": "array"
+          },
+          "locator": {
+            "title": "Locator",
+            "type": "string"
+          },
+          "name": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "default": null,
+            "title": "Name"
+          },
+          "role": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "default": null,
+            "title": "Role"
+          },
+          "selector": {
+            "title": "Selector",
+            "type": "string"
+          },
+          "selector_normalized": {
+            "title": "Selector Normalized",
+            "type": "boolean"
+          },
+          "selector_strategy": {
+            "title": "Selector Strategy",
+            "type": "string"
+          },
+          "shadow_hosts": {
+            "items": {
+              "type": "string"
+            },
+            "title": "Shadow Hosts",
+            "type": "array"
+          },
+          "tab_id": {
+            "description": "MCP tab id captured for this operation.",
+            "maxLength": 128,
+            "minLength": 1,
+            "type": "string"
+          },
+          "target_kind": {
+            "default": "selector",
+            "enum": [
+              "selector",
+              "accessibility"
+            ],
+            "title": "Target Kind",
+            "type": "string"
+          },
+          "typed": {
+            "const": true,
+            "title": "Typed",
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "selector",
+          "locator",
+          "selector_strategy",
+          "selector_normalized",
+          "typed",
+          "cleared",
+          "tab_id"
+        ],
+        "title": "ElementTypeData",
+        "type": "object"
+      },
+      "message": {
+        "type": "string"
+      },
+      "ok": {
+        "const": true
+      }
+    },
+    "required": [
+      "ok",
+      "message",
+      "data"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "data": {
+        "additionalProperties": true,
+        "type": "object"
+      },
+      "error": {
+        "additionalProperties": false,
+        "properties": {
+          "code": {
+            "type": "string"
+          },
+          "details": {
+            "additionalProperties": true,
+            "type": "object"
+          },
+          "message": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "type": "object"
+      },
+      "message": {
+        "type": "string"
+      },
+      "ok": {
+        "const": false
+      }
+    },
+    "required": [
+      "ok",
+      "message",
+      "error"
+    ],
+    "type": "object"
+  }
+]
  2. Changed5 schema fields changedv0.8.0
    • addedInput schema / $defs
      Added value: +{
+  "AccessibilityTargetInput": {
+    "additionalProperties": false,
+    "description": "A unique accessibility role/name target within an optional DOM scope.",
+    "properties": {
+      "exact": {
+        "default": true,
+        "title": "Exact",
+        "type": "boolean"
+      },
+      "frame_selectors": {
+        "description": "Ordered outer-to-inner frame selectors resolved by DrissionPage.",
+        "items": {
+          "maxLength": 500,
+          "minLength": 1,
+          "type": "string"
+        },
+        "maxItems": 4,
+        "title": "Frame Selectors",
+        "type": "array"
+      },
+      "kind": {
+        "const": "accessibility",
+        "title": "Kind",
+        "type": "string"
+      },
+      "name": {
+        "anyOf": [
+          {
+            "maxLength": 500,
+            "minLength": 1,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null,
+        "title": "Name"
+      },
+      "role": {
+        "maxLength": 500,
+        "minLength": 1,
+        "title": "Role",
+        "type": "string"
+      },
+      "shadow_hosts": {
+        "description": "Ordered outer-to-inner shadow host selectors resolved by DrissionPage.",
+        "items": {
+          "maxLength": 500,
+          "minLength": 1,
+          "type": "string"
+        },
+        "maxItems": 8,
+        "title": "Shadow Hosts",
+        "type": "array"
+      }
+    },
+    "required": [
+      "kind",
+      "role"
+    ],
+    "title": "AccessibilityTargetInput",
+    "type": "object"
+  },
+  "SelectorTargetInput": {
+    "additionalProperties": false,
+    "description": "A selector target with optional frame and shadow-root scope.",
+    "properties": {
+      "frame_selectors": {
+        "description": "Ordered outer-to-inner frame selectors resolved by DrissionPage.",
+        "items": {
+          "maxLength": 500,
+          "minLength": 1,
+          "type": "string"
+        },
+        "maxItems": 4,
+        "title": "Frame Selectors",
+        "type": "array"
+      },
+      "kind": {
+        "const": "selector",
+        "title": "Kind",
+        "type": "string"
+      },
+      "selector": {
+        "maxLength": 500,
+        "minLength": 1,
+        "title": "Selector",
+        "type": "string"
+      },
+      "shadow_hosts": {
+        "description": "Ordered outer-to-inner shadow host selectors resolved by DrissionPage.",
+        "items": {
+          "maxLength": 500,
+          "minLength": 1,
+          "type": "string"
+        },
+        "maxItems": 8,
+        "title": "Shadow Hosts",
+        "type": "array"
+      }
+    },
+    "required": [
+      "kind",
+      "selector"
+    ],
+    "title": "SelectorTargetInput",
+    "type": "object"
+  }
+}
    • addedInput schema / properties / selector / anyOf
      Added value: +[
+  {
+    "maxLength": 500,
+    "minLength": 1,
+    "type": "string"
+  },
+  {
+    "discriminator": {
+      "mapping": {
+        "accessibility": "#/$defs/AccessibilityTargetInput",
+        "selector": "#/$defs/SelectorTargetInput"
+      },
+      "propertyName": "kind"
+    },
+    "oneOf": [
+      {
+        "$ref": "#/$defs/SelectorTargetInput"
+      },
+      {
+        "$ref": "#/$defs/AccessibilityTargetInput"
+      }
+    ]
+  }
+]
    • removedInput schema / properties / selector / type
      Removed value: -"string"
    • changedInput schema / properties / timeout / type
      Previous value: -"integer"New value: +"number"
    • changedOutput schema / oneOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "data": {
-        "additionalProperties": false,
-        "properties": {
-          "changes": {
-            "anyOf": [
-              {
-                "additionalProperties": true,
-                "type": "object"
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "default": null,
-            "title": "Changes"
-          },
-          "cleared": {
-            "title": "Cleared",
-            "type": "boolean"
-          },
-          "locator": {
-            "title": "Locator",
-            "type": "string"
-          },
-          "selector": {
-            "title": "Selector",
-            "type": "string"
-          },
-          "selector_normalized": {
-            "title": "Selector Normalized",
-            "type": "boolean"
-          },
-          "selector_strategy": {
-            "title": "Selector Strategy",
-            "type": "string"
-          },
-          "typed": {
-            "const": true,
-            "title": "Typed",
-            "type": "boolean"
-          }
-        },
-        "required": [
-          "selector",
-          "locator",
-          "selector_strategy",
-          "selector_normalized",
-          "typed",
-          "cleared"
-        ],
-        "title": "ElementTypeData",
-        "type": "object"
-      },
-      "message": {
-        "type": "string"
-      },
-      "ok": {
-        "const": true
-      }
-    },
-    "required": [
-      "ok",
-      "message",
-      "data"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "data": {
-        "additionalProperties": true,
-        "type": "object"
-      },
-      "error": {
-        "additionalProperties": false,
-        "properties": {
-          "code": {
-            "type": "string"
-          },
-          "details": {
-            "additionalProperties": true,
-            "type": "object"
-          },
-          "message": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "code",
-          "message"
-        ],
-        "type": "object"
-      },
-      "message": {
-        "type": "string"
-      },
-      "ok": {
-        "const": false
-      }
-    },
-    "required": [
-      "ok",
-      "message",
-      "error"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "data": {
+        "additionalProperties": false,
+        "properties": {
+          "changes": {
+            "anyOf": [
+              {
+                "additionalProperties": true,
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "default": null,
+            "title": "Changes"
+          },
+          "cleared": {
+            "title": "Cleared",
+            "type": "boolean"
+          },
+          "exact": {
+            "anyOf": [
+              {
+                "type": "boolean"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "default": null,
+            "title": "Exact"
+          },
+          "frame_selectors": {
+            "items": {
+              "type": "string"
+            },
+            "title": "Frame Selectors",
+            "type": "array"
+          },
+          "locator": {
+            "title": "Locator",
+            "type": "string"
+          },
+          "name": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "default": null,
+            "title": "Name"
+          },
+          "role": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "default": null,
+            "title": "Role"
+          },
+          "selector": {
+            "title": "Selector",
+            "type": "string"
+          },
+          "selector_normalized": {
+            "title": "Selector Normalized",
+            "type": "boolean"
+          },
+          "selector_strategy": {
+            "title": "Selector Strategy",
+            "type": "string"
+          },
+          "shadow_hosts": {
+            "items": {
+              "type": "string"
+            },
+            "title": "Shadow Hosts",
+            "type": "array"
+          },
+          "target_kind": {
+            "default": "selector",
+            "enum": [
+              "selector",
+              "accessibility"
+            ],
+            "title": "Target Kind",
+            "type": "string"
+          },
+          "typed": {
+            "const": true,
+            "title": "Typed",
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "selector",
+          "locator",
+          "selector_strategy",
+          "selector_normalized",
+          "typed",
+          "cleared"
+        ],
+        "title": "ElementTypeData",
+        "type": "object"
+      },
+      "message": {
+        "type": "string"
+      },
+      "ok": {
+        "const": true
+      }
+    },
+    "required": [
+      "ok",
+      "message",
+      "data"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "data": {
+        "additionalProperties": true,
+        "type": "object"
+      },
+      "error": {
+        "additionalProperties": false,
+        "properties": {
+          "code": {
+            "type": "string"
+          },
+          "details": {
+            "additionalProperties": true,
+            "type": "object"
+          },
+          "message": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "type": "object"
+      },
+      "message": {
+        "type": "string"
+      },
+      "ok": {
+        "const": false
+      }
+    },
+    "required": [
+      "ok",
+      "message",
+      "error"
+    ],
+    "type": "object"
+  }
+]
  3. Addedv0.7.2
  4. Removedv0.7.2
  5. Changed4 schema fields changedv0.5.1
    • addedInput schema / properties / observe
      Added value: +{
+  "default": false,
+  "description": "Return a compact before/after page change summary.",
+  "title": "Observe",
+  "type": "boolean"
+}
    • addedInput schema / properties / timeout / maximum
      Added value: +120
    • addedInput schema / properties / timeout / minimum
      Added value: +0
    • changedOutput schema / oneOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "data": {
-        "additionalProperties": false,
-        "properties": {
-          "cleared": {
-            "type": "boolean"
-          },
-          "locator": {
-            "type": "string"
-          },
-          "selector": {
-            "type": "string"
-          },
-          "selector_normalized": {
-            "type": "boolean"
-          },
-          "selector_strategy": {
-            "type": "string"
-          },
-          "typed": {
-            "const": true
-          }
-        },
-        "required": [
-          "selector",
-          "locator",
-          "selector_strategy",
-          "selector_normalized",
-          "typed",
-          "cleared"
-        ],
-        "title": "ElementTypeData",
-        "type": "object"
-      },
-      "message": {
-        "type": "string"
-      },
-      "ok": {
-        "const": true
-      }
-    },
-    "required": [
-      "ok",
-      "message",
-      "data"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "data": {
-        "additionalProperties": true,
-        "type": "object"
-      },
-      "error": {
-        "additionalProperties": false,
-        "properties": {
-          "code": {
-            "type": "string"
-          },
-          "details": {
-            "additionalProperties": true,
-            "type": "object"
-          },
-          "message": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "code",
-          "message"
-        ],
-        "type": "object"
-      },
-      "message": {
-        "type": "string"
-      },
-      "ok": {
-        "const": false
-      }
-    },
-    "required": [
-      "ok",
-      "message",
-      "error"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "data": {
+        "additionalProperties": false,
+        "properties": {
+          "changes": {
+            "additionalProperties": false,
+            "properties": {
+              "active_element": {
+                "anyOf": [
+                  {
+                    "additionalProperties": true,
+                    "properties": {
+                      "selector": {
+                        "type": "string"
+                      },
+                      "tag": {
+                        "type": "string"
+                      },
+                      "text": {
+                        "type": "string"
+                      }
+                    },
+                    "type": "object"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              },
+              "appeared_texts": {
+                "items": {
+                  "type": "string"
+                },
+                "type": "array"
+              },
+              "console_errors_added": {
+                "type": "integer"
+              },
+              "console_warnings_added": {
+                "type": "integer"
+              },
+              "counts_after": {
+                "additionalProperties": {
+                  "type": "integer"
+                },
+                "type": "object"
+              },
+              "counts_before": {
+                "additionalProperties": {
+                  "type": "integer"
+                },
+                "type": "object"
+              },
+              "counts_delta": {
+                "additionalProperties": {
+                  "type": "integer"
+                },
+                "type": "object"
+              },
+              "new_console_messages": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "column": {
+                      "type": "integer"
+                    },
+                    "index": {
+                      "type": "integer"
+                    },
+                    "level": {
+                      "type": "string"
+                    },
+                    "line": {
+                      "type": "integer"
+                    },
+                    "source": {
+                      "type": "string"
+                    },
+                    "text": {
+                      "type": "string"
+                    },
+                    "url": {
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "index",
+                    "level",
+                    "text",
+                    "url",
+                    "line",
+                    "column",
+                    "source"
+                  ],
+                  "title": "ConsoleLog",
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "ready_state": {
+                "type": "string"
+              },
+              "removed_texts": {
+                "items": {
+                  "type": "string"
+                },
+                "type": "array"
+              },
+              "title_after": {
+                "type": "string"
+              },
+              "title_before": {
+                "type": "string"
+              },
+              "title_changed": {
+                "type": "boolean"
+              },
+              "url_after": {
+                "type": "string"
+              },
+              "url_before": {
+                "type": "string"
+              },
+              "url_changed": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "url_before",
+              "url_after",
+              "url_changed",
+              "title_before",
+              "title_after",
+              "title_changed",
+              "ready_state",
+              "counts_before",
+              "counts_after",
+              "counts_delta",
+              "appeared_texts",
+              "removed_texts",
+              "active_element",
+              "console_errors_added",
+              "console_warnings_added",
+              "new_console_messages"
+            ],
+            "title": "PageObservationChanges",
+            "type": "object"
+          },
+          "cleared": {
+            "type": "boolean"
+          },
+          "locator": {
+            "type": "string"
+          },
+          "selector": {
+            "type": "string"
+          },
+          "selector_normalized": {
+            "type": "boolean"
+          },
+          "selector_strategy": {
+            "type": "string"
+          },
+          "typed": {
+            "const": true
+          }
+        },
+        "required": [
+          "selector",
+          "locator",
+          "selector_strategy",
+          "selector_normalized",
+          "typed",
+          "cleared"
+        ],
+        "title": "ElementTypeData",
+        "type": "object"
+      },
+      "message": {
+        "type": "string"
+      },
+      "ok": {
+        "const": true
+      }
+    },
+    "required": [
+      "ok",
+      "message",
+      "data"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "data": {
+        "additionalProperties": true,
+        "type": "object"
+      },
+      "error": {
+        "additionalProperties": false,
+        "properties": {
+          "code": {
+            "type": "string"
+          },
+          "details": {
+            "additionalProperties": true,
+            "type": "object"
+          },
+          "message": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "type": "object"
+      },
+      "message": {
+        "type": "string"
+      },
+      "ok": {
+        "const": false
+      }
+    },
+    "required": [
+      "ok",
+      "message",
+      "error"
+    ],
+    "type": "object"
+  }
+]
  6. Changed2 schema fields changedv0.5.0
    • addedInput schema / additionalProperties
      Added value: +false
    • removedOutput schema / additionalProperties
      Removed value: -false
  7. First observedv0.4.1

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=false, destructiveHint=true, idempotentHint=false and openWorldHint=true, so the safety profile is covered. The description adds nothing beyond that—it doesn't explain that the default clear=true overwrites existing field content (a destructive consequence), nor anything about focus, timeouts, or failure behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single short sentence with zero redundancy and the core action front-loaded. It is efficient, though its brevity edges toward under-specification rather than tightness.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present and full schema descriptions, the description needn't cover return values, and annotations cover the safety profile. Still, for a 6-parameter destructive mutation on a page with many input-related siblings, the definition leaves sibling disambiguation and the destructive default clear=true unexplained.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so every parameter including text, clear, tab_id, observe, timeout and selector is already documented in the schema. The description adds no extra semantics (e.g. what observe returns or how selector forms behave beyond the schema text), so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb (type) and resource (text into an input element), which is unambiguous. However, it offers no differentiation from close siblings like keyboard_press or element_select, so an agent must infer the boundary from the schema alone.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives such as keyboard_press for key sequences or element_check/element_select for other input controls. The agent gets a purpose but no routing logic.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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