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skiddgoddamn

yandex-marketing-mcp

by skiddgoddamn

yd_ad_extensions_add

Add callout extensions to Yandex Direct ads. Specify short text snippets up to 25 characters each to highlight key benefits.

Instructions

Create ad extensions (callouts — short texts shown under ads, max 25 chars each).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
calloutsYesCallout texts (max 25 chars each)
client_loginNoOptional. Override Client-Login for this call (agency multi-account).
Behavior2/5

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

No annotations provided, so description must disclose behavioral traits. It mentions it creates callouts but does not state if it is destructive, if authorization is needed, rate limits, or what side effects occur. Minimal transparency.

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?

Single sentence with essential information, no fluff. Front-loaded with action and resource.

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?

Missing details on return value (e.g., does it return IDs?), limitations on callout count, and how it integrates with other ad extensions. Incomplete for a creation tool.

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 coverage is 100% with good descriptions for both parameters (callouts and client_login). The description adds little beyond schema, but baseline is 3 due to high schema coverage.

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?

Clearly states the tool creates ad extensions (callouts), specifying the resource and action. Sibling tools like yd_ad_extensions_delete and yd_ad_extensions_get handle different operations, so distinction is clear.

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 on when to use this tool versus alternatives. For example, it doesn't specify when to use yd_ad_extensions_add vs yd_callouts_link. Also lacks prerequisites or best practices.

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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