tab_listLists all browser tabs open in the current MCP session, providing an overview for navigation and management.
List browser tabs tracked by the current DrissionPage MCP session.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Changes observed during successful MCP inspections. Dates show when Glama detected each change.
v0.7.2Output schema / oneOfPrevious value: -[
- {
- "additionalProperties": false,
- "properties": {
- "data": {
- "additionalProperties": false,
- "properties": {
- "active_tab_id": {
- "type": "string"
- },
- "count": {
- "type": "integer"
- },
- "tabs": {
- "items": {
- "additionalProperties": false,
- "properties": {
- "active": {
- "type": "boolean"
- },
- "connected": {
- "type": "boolean"
- },
- "id": {
- "type": "string"
- },
- "native_id": {
- "type": "string"
- },
- "title": {
- "type": "string"
- },
- "url": {
- "type": "string"
- }
- },
- "required": [
- "id",
- "native_id",
- "url",
- "title",
- "active",
- "connected"
- ],
- "title": "TabSummary",
- "type": "object"
- },
- "type": "array"
- }
- },
- "required": [
- "tabs",
- "count",
- "active_tab_id"
- ],
- "title": "TabListData",
- "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": {
+ "active_tab_id": {
+ "title": "Active Tab Id",
+ "type": "string"
+ },
+ "count": {
+ "title": "Count",
+ "type": "integer"
+ },
+ "tabs": {
+ "items": {
+ "additionalProperties": true,
+ "type": "object"
+ },
+ "title": "Tabs",
+ "type": "array"
+ }
+ },
+ "required": [
+ "tabs",
+ "count",
+ "active_tab_id"
+ ],
+ "title": "TabListData",
+ "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"
+ }
+]v0.5.1Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, covering safety. The description adds the session scoping ('tracked by the current DrissionPage MCP session'), which is useful but not extensive. No contradictions with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence of 14 words, with no redundant information. It efficiently conveys the core functionality.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (no parameters, full annotation coverage, output schema present), the description is adequately complete. It specifies the scope (current session), which is the main contextual detail needed beyond structured fields.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has zero parameters, and the input schema is empty. With baseline set at 4 for 0 params, the description does not need to add parameter details. The output schema exists, so the description does not need to explain return values.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's action: listing browser tabs. It uses the specific verb 'List' and resource 'browser tabs', with scope defined as the current DrissionPage MCP session. This distinguishes it from sibling tools like page_navigate or tab_close.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. For example, it does not mention whether it should be used before closing tabs or navigating. Given the set of sibling tools, explicit usage context would be helpful.
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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