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pauliowest

Campaign Monitor MCP

by pauliowest

get_suppression_list

Retrieve the suppression list for a client, with pagination options to manage large datasets. Identify unsubscribed or blocked addresses to maintain list hygiene.

Instructions

Get the suppression list for a client

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
client_idNoClient ID (defaults to CM_CLIENT_ID env var)
pageNoPage number
page_sizeNoNumber of results per page
Behavior3/5

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

The description implies a read-only operation via 'Get', but without annotations it carries the burden. It does not mention pagination behavior, default page size, or response structure, which are common areas of ambiguity for list retrieval tools.

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 extremely concise (6 words) and front-loaded with the essential action. For a simple retrieval tool, this is efficient, though slightly more context could be added.

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?

Given the absence of an output schema, the description should clarify what the response contains (e.g., a list of suppressed emails). The current description is minimal and may leave the agent guessing about return values.

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?

All three parameters have descriptions in the schema, so the description does not add meaning beyond what is already provided. Baseline score applies.

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 verb 'Get' and the resource 'suppression list for a client', which distinguishes it from sibling tools like 'add_to_suppression_list' and 'remove_from_suppression_list'.

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. The description lacks context about typical use cases or prerequisites.

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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