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GCP MCP

GCP MCP

by eniayomi
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
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select-project

Set the active Google Cloud project and region for all following GCP operations.

Instructions

Selects GCP project to use for subsequent interactions

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "projectId": "<projectId>"
    },
    "name": "select-project"
  }
}

Input Schema

NameRequiredDescriptionDefault
regionNoRegion to use (if not provided, us-central1 is used)
projectIdYesID of the GCP project to select

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv1.0.0

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 carry the full burden. It indicates a side effect (selecting a project for subsequent interactions) but lacks details about persistence, required permissions, or whether the selection is session-wide or global.

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 that immediately conveys the core purpose. It is concise without being overly terse, though a few more words could improve clarity without harming 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?

Given the complexity of a state-changing tool and the absence of an output schema or annotations, the description is incomplete. It does not explain what 'subsequent interactions' means, how the selected project is scoped, or if there is a way to unset the selection.

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 input schema has 100% coverage, with both parameters documented. The description does not add further meaning beyond the schema; it merely restates the purpose of the projectId. For region, the schema already specifies the default, and the description does not elaborate.

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 action ('Selects') and the resource ('GCP project'), and specifies the context ('for subsequent interactions'). It effectively distinguishes from sibling tools like list-projects, which only list projects without setting the active one.

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?

No guidance is provided on when to use this tool versus alternatives, nor are there any exclusions or prerequisites mentioned. The description implies it should be used before other actions, but this is not explicit.

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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