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Rezlazy

yandex-metrika-mcp

by Rezlazy

mgmt_clients_list

List available Yandex Direct clients to access and manage advertising accounts for your Metrika configuration.

Instructions

https://yandex.ru/dev/metrika/ru/management/ List available Direct clients

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
prettyNoPretty-print response (1)
countersNoCounter IDs comma-separated

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.2

TDQS

B3.2/5.0
Behavior3/5

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

With no annotations provided, the description carries the full behavioral burden. 'List' does convey read-only intent and there is no indication of destructive side effects. However, it does not disclose authentication needs, pagination behavior, or whether response data depends on any implicit user context, so the behavioral disclosure is adequate but thin.

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 natural-language description is very short and has no filler: 'List available Direct clients'. The leading documentation URL adds some noise, but overall the definition is compact and easy for an agent to scan. It would be slightly improved by removing the URL or replacing it with a more operational detail.

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-only list tool with two optional, fully documented parameters, the description is minimally viable. However, there is no output schema and no explanation of what a returned client entry looks like, how access to clients is scoped, or how this relates to sibling account/delegate tools. The definition is functional but leaves meaningful contextual gaps.

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 already documents both parameters: 'pretty' as a pretty-print flag and 'counters' as comma-separated IDs. Since schema description coverage is 100%, the description does not need to compensate, and it does not add any parameter-level meaning. This matches the baseline of 3 for fully schema-covered parameters.

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?

States a clear verb and resource: 'List available Direct clients'. This is distinct from sibling list tools like mgmt_accounts_list, mgmt_counters_list, and mgmt_goals_list, so the agent can identify the intended resource. It loses a point because it does not clarify whose clients are listed or how 'available' is determined.

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 gives no guidance about when to use this tool versus the many other mgmt_*_list tools. There is no mention of alternatives, prerequisites, or situations where this tool should be preferred. The 'available' qualifier hints at access scope but does not provide actionable selection criteria.

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