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Yandex Cloud MCP Server

Yandex Cloud MCP Server

by theYahia
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

list_functions

List all serverless functions in a Yandex Cloud catalog using a folder ID, enabling quick review of deployed functions.

Instructions

Список serverless-функций в каталоге.

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": "list_functions"
  }
}

Input Schema

NameRequiredDescriptionDefault
folder_idNoID каталога (по умолчанию из env)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.1

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 carries the full burden of disclosing behavior. The word 'Список' implies a read-only listing, but the description does not state whether the operation only reads data, what the return structure looks like, whether pagination exists, or how the default folder from the environment is used.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, focused sentence with no redundant wording. The action and resource are front-loaded, and every word contributes to the meaning.

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?

This is a simple tool with one optional parameter and no output schema, so the description is minimally viable. However, it lacks information about the return format, pagination, usage context, and alternatives, which an agent would need for confident selection and invocation.

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%: the only parameter, folder_id, already has a description stating it is the folder ID and defaults to the environment value. The tool description adds no additional parameter detail, so the baseline of 3 is appropriate.

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 uses a specific verb and resource ('Список serverless-функций' = list serverless functions) and indicates the scope ('в каталоге' = in the folder). It clearly distinguishes the tool from siblings like list_instances and list_buckets by resource type, though it does not explicitly name those siblings.

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?

There is no guidance on when to use this tool versus alternatives such as list_instances or invoke_function. The only usage signal is implicit in the resource name and description; no exclusions, prerequisites, or alternative conditions are provided.

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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