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google-play-vitals-mcp

by OldJii

play_list_accessible_apps

List all Google Play apps accessible by your GCP Service Account, with pagination options for handling large results.

Instructions

[Account Apps Discovery] List all Google Play applications accessible by the configured GCP Service Account.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
page_sizeNoNumber of apps to retrieve (default: 20).
page_tokenNoOptional pagination token from previous call.
credentials_pathNoOptional path to GCP credentials JSON.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.3.1

TDQS

B3.2/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden. It discloses that the tool lists apps accessible by the service account, which implies a read-only operation, but it does not mention pagination behavior, authentication requirements, or what happens if credentials are missing. The description adds minimal behavioral context beyond the operation itself.

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, front-loaded sentence with a useful category prefix. It is concise and contains no filler, though it could have added a brief note about pagination without becoming verbose.

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 list tool with fully documented parameters, the description is mostly complete. However, with no annotations and no output schema, it would benefit from stating that results are paginated and that the tool is read-only. The absence of any behavioral or return-value context leaves a small but real gap.

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 the schema already documents all three parameters. The description does not add extra meaning about how page_size, page_token, or credentials_path interact, but the baseline of 3 is appropriate because the schema covers the parameters fully.

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 specific verb ('List') and resource ('Google Play applications accessible by the configured GCP Service Account'), and the '[Account Apps Discovery]' prefix adds context. It is clear enough to distinguish from siblings like play_get_release_tracks or play_list_anomalies, though it does not explicitly name a sibling alternative.

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

Usage Guidelines3/5

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

The description implies a discovery/listing use case and the '[Account Apps Discovery]' prefix signals when to use it, but it does not explicitly state when not to use it or name alternative tools. The context is adequate but not fully explicit.

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