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Puppeteer Debugger MCP Server

Puppeteer Debugger MCP Server

by ALIEX7664
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

get_cache_status

Retrieve cache status including LocalStorage, SessionStorage, Cookies, and IndexedDB for a specified page URL.

Instructions

获取缓存状态（LocalStorage、SessionStorage、Cookies、IndexedDB）

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "get_cache_status"
  }
}

Input Schema

NameRequiredDescriptionDefault
urlNo页面 URL（可选）

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv2.3.0

TDQS

B3.1/5.0
Behavior2/5

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

No annotations are provided, so the description must bear the burden of behavioral disclosure. It does not mention whether the tool is read-only, has side effects, requires permissions, or what happens if the URL parameter is omitted.

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?

The description is a single sentence, very concise. It front-loads the main purpose and enumerates cache types, but could be slightly more informative without losing conciseness.

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?

With no output schema and no annotations, the description should explain return values, behavior with invalid URLs, or scope ('all tabs' vs 'specific page'). The simple one-liner leaves many gaps for a tool that queries browser storage.

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?

The schema has 100% coverage for the single parameter 'url', describing it as optional. The description adds no extra meaning beyond what the schema already provides, meeting the baseline for high coverage.

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

Purpose5/5

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

The description clearly states the verb 'get' and resource 'cache status', explicitly listing the cache types (LocalStorage, SessionStorage, Cookies, IndexedDB). This distinguishes it from sibling tools like get_heap_snapshot or get_performance.

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?

The description provides no guidance on when to use this tool versus alternatives (e.g., get_console_errors, check_element). No context on when it is appropriate or not.

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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