Kitsune

Overview Schema Source Related Servers Discussions Admin

browser_type

Destructive

Type specified text into an editable browser element using a target selector, with options to type slowly for key handlers or submit via Enter.

Instructions

Type text into editable element

Input Schema

Name	Required	Description
`text`	Yes	Text to type into the element
`slowly`	No	Whether to type one character at a time. Useful for triggering key handlers in the page. By default entire text is filled in at once.
`submit`	No	Whether to submit entered text (press Enter after)
`target`	Yes	Exact target element reference from the page snapshot, or a unique element selector
`element`	No	Human-readable element description used to obtain permission to interact with the element

Schema Changelog

Changes observed during successful MCP inspections.

Changed18 schema fields changedv0.4.0Oct 24, 2026

addedInput schema / $schema

Added value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

removedInput schema / properties / clear

Removed value: -{
-  "default": false,
-  "type": "boolean"
-}

removedInput schema / properties / confirm_token
```
Removed value: -{
-  "type": "string"
-}
```

addedInput schema / properties / element / description

Added value: +"Human-readable element description used to obtain permission to interact with the element"

removedInput schema / properties / expect

Removed value: -{
-  "additionalProperties": true,
-  "type": "object"
-}

removedInput schema / properties / first

Removed value: -{
-  "default": false,
-  "type": "boolean"
-}

removedInput schema / properties / mode

Removed value: -{
-  "default": "type",
-  "description": "type: typing events, clearing first if clear. fill: replace the value via native setters and input/change events. editable: insert plain text into an editor/input/textarea, appending unless clear. HTML: browser_js.",
-  "enum": [
-    "type",
-    "fill",
-    "editable"
-  ],
-  "type": "string"
-}

removedInput schema / properties / ref

Removed value: -{
-  "type": "string"
-}

removedInput schema / properties / selector

Removed value: -{
-  "type": "string"
-}

addedInput schema / properties / slowly

Added value: +{
+  "description": "Whether to type one character at a time. Useful for triggering key handlers in the page. By default entire text is filled in at once.",
+  "type": "boolean"
+}

addedInput schema / properties / submit

Added value: +{
+  "description": "Whether to submit entered text (press Enter after)",
+  "type": "boolean"
+}

removedInput schema / properties / tab_id

Removed value: -{
-  "description": "Default: active tab.",
-  "type": "integer"
-}

addedInput schema / properties / target

Added value: +{
+  "description": "Exact target element reference from the page snapshot, or a unique element selector",
+  "type": "string"
+}

addedInput schema / properties / text / description
```
Added value: +"Text to type into the element"
```

removedInput schema / properties / timeout

Removed value: -{
-  "default": 10000,
-  "type": "integer"
-}

removedInput schema / properties / wait

Removed value: -{
-  "default": false,
-  "type": "boolean"
-}

addedInput schema / required

Added value: +[
+  "target",
+  "text"
+]

Changed26 schema fields changedv0.3.0Oct 22, 2026
- removedInput schema / properties / clear / title
```
Removed value: -"Clear"
```
- addedInput schema / properties / confirm_token
```
Added value: +{
+  "type": "string"
+}
```
- removedInput schema / properties / element / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedInput schema / properties / element / default
```
Removed value: -null
```
- removedInput schema / properties / element / title
```
Removed value: -"Element"
```
- addedInput schema / properties / element / type
```
Added value: +"string"
```
- addedInput schema / properties / expect
```
Added value: +{
+  "additionalProperties": true,
+  "type": "object"
+}
```
- addedInput schema / properties / first
```
Added value: +{
+  "default": false,
+  "type": "boolean"
+}
```
- addedInput schema / properties / mode / description
```
Added value: +"type: typing events, clearing first if clear. fill: replace the value via native setters and input/change events. editable: insert plain text into an editor/input/textarea, appending unless clear. HTML: browser_js."
```
- removedInput schema / properties / mode / title
```
Removed value: -"Mode"
```
- removedInput schema / properties / ref / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedInput schema / properties / ref / default
```
Removed value: -null
```
- removedInput schema / properties / ref / title
```
Removed value: -"Ref"
```
- addedInput schema / properties / ref / type
```
Added value: +"string"
```
- removedInput schema / properties / selector / default
```
Removed value: -""
```
- removedInput schema / properties / selector / title
```
Removed value: -"Selector"
```
- removedInput schema / properties / tab_id / anyOf
```
Removed value: -[
-  {
-    "type": "integer"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedInput schema / properties / tab_id / default
```
Removed value: -null
```
- addedInput schema / properties / tab_id / description
```
Added value: +"Default: active tab."
```
- removedInput schema / properties / tab_id / title
```
Removed value: -"Tab Id"
```
- addedInput schema / properties / tab_id / type
```
Added value: +"integer"
```
- removedInput schema / properties / text / default
```
Removed value: -""
```
- removedInput schema / properties / text / title
```
Removed value: -"Text"
```
- addedInput schema / properties / timeout
```
Added value: +{
+  "default": 10000,
+  "type": "integer"
+}
```
- addedInput schema / properties / wait
```
Added value: +{
+  "default": false,
+  "type": "boolean"
+}
```
- removedInput schema / title
```
Removed value: -"browser_typeArguments"
```

Changed6 schema fields changedOct 19, 2026

addedInput schema / properties / element

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Element"
+}

addedInput schema / properties / mode

Added value: +{
+  "default": "type",
+  "enum": [
+    "type",
+    "fill",
+    "editable"
+  ],
+  "title": "Mode",
+  "type": "string"
+}

addedInput schema / properties / ref

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Ref"
+}

addedInput schema / properties / selector / default
```
Added value: +""
```
addedInput schema / properties / text / default
```
Added value: +""
```

removedInput schema / required

Removed value: -[
-  "selector",
-  "text"
-]

First observedv0.1.0Oct 16, 2026

TDQS

B3/5.0

Behavior3/5

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

The annotation destructiveHint=true and readOnlyHint=false already signal that this tool can modify state, so the description does not contradict that. However, the main description adds no additional behavioral context beyond the annotations, such as whether typing overwrites existing content or triggers page events. The parameter descriptions do mention key-handler triggering and Enter submission, but the main description itself stays shallow.

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

Conciseness5/5

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

The description is a single, focused sentence with no filler or repetition. It front-loads the verb and object, making the tool's primary purpose immediately obvious.

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

Completeness2/5

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

For a tool with several closely related siblings (fill_form, press_key, click), the description is too thin to fully orient an agent. It lacks any mention of when typing is appropriate, how the target is resolved, or what side effects to expect, so the agent must rely on parameter descriptions and external context to make a confident choice.

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 coverage is 100%, so the baseline is 3 because the input schema already documents all five parameters. The main description, 'Type text into editable element,' adds no meaning beyond the schema's parameter descriptions, which already define text, slowly, submit, target, and element clearly enough.

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?

The description states a clear action ('Type text') and a clear target ('editable element'), which distinguishes it from many sibling tools at a high level. It is slightly vague about whether 'editable element' includes textareas, contenteditable regions, or only input fields, but the core purpose is unambiguous.

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

Usage Guidelines1/5

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

The description gives no guidance on when to prefer this tool over sibling tools such as browser_fill_form or browser_press_key. It does not mention exclusions, prerequisites, or scenarios where typing would be inappropriate, leaving the agent to infer usage from the tool name alone.

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

browser_type

Instructions

Input Schema

Schema Changelog

TDQS

Other Tools