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ricardodeazambuja

browser-mcp-server

browser_storage_get_cache_storage

List all Cache Storage caches and their entries, optionally filtered by cache name.

Instructions

List Cache Storage API caches and their entries (see browser_docs)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
cacheNameNoSpecific cache to inspect (optional)
Behavior3/5

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

No annotations are provided, so the description carries full burden. It describes the operation as 'list', implying no side effects, but does not elaborate on return format, pagination, or permissions. It is adequate but not rich.

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 concise sentence. It is front-loaded and efficient, though it does not provide structural elements like bullet points.

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?

For a simple read tool with one optional parameter, the description is minimally adequate. However, absence of output schema and reliance on 'see browser_docs' leave gaps in understanding the response format.

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%, and the description adds no extra meaning beyond the schema. The optional parameter is already documented, so the tool description does not enhance parameter understanding.

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 it lists Cache Storage API caches and their entries. It distinguishes from sibling tools like browser_storage_delete_cache and browser_storage_get_indexeddb by specifying the storage type.

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. It only says to see browser_docs, but does not mention when-not to use it or compare with sibling tools.

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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