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christianclaudio

mcp-server-sigma

sigma_list_members

Read-only

List all members in the organization. Use summary_only to get a concise response and save tokens.

Instructions

List all members in the organization. Pass summary_only=True for concise token-efficient response.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
summary_onlyNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds the context that summary_only yields a token-efficient response, but it does not disclose pagination behavior or other details. This adds some value but is not rich.

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 one concise sentence with a clear purpose and a specific usage tip. It is front-loaded and every word earns its place.

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 list tool with output schema present, the description is adequate but has gaps. It does not clarify the semantics of the limit parameter and does not differentiate from the sibling 'sigma_list_all_members', so it is minimally viable.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It explains the purpose of summary_only but says nothing about the 'limit' parameter, which remains ambiguous. With two parameters and only one explained, the description only partially fulfills the compensation requirement.

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 'List all members in the organization', providing a specific verb and resource. However, it does not distinguish this tool from the very similar sibling 'sigma_list_all_members', so it lacks sibling differentiation that would warrant a 5.

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 like 'sigma_list_team_members' or 'sigma_list_all_members'. The only usage advice is 'Pass summary_only=True for concise token-efficient response', which is a parameter optimization tip, not a when-to-use or when-not-to-use statement.

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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