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coopersully

SendGrid MCP Server

by coopersully

list_global_suppressions

Retrieve a list of globally suppressed email recipients from your SendGrid account, optionally filtered by time range.

Instructions

Read-only: list global suppressions

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
end_timeNoOptional Unix end time
start_timeNoOptional Unix start time
Behavior2/5

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

The description only adds the 'read-only' behavior but does not disclose other important traits like pagination, response structure, or authorization needs. Given no annotations, this is insufficient.

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 exceptionally concise, with no wasted words, though it sacrifices completeness.

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?

The description lacks context on the nature of global suppressions, response format, and any usage constraints, making it incomplete for an agent without domain knowledge.

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 already describes both parameters with clear descriptions. The description adds no additional semantics.

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 clearly states the action (list) and resource (global suppressions), and explicitly marks it as read-only, distinguishing it from mutation siblings like add_global_suppressions and delete_global_suppression.

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 usage context is provided; the description does not indicate when to use this tool over other list tools or the add/delete counterparts.

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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