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greynoise-mcp-server

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List Blocklists

list-blocklists
Read-only

List blocklists in a workspace with pagination and limit options.

Instructions

List the blocklists in a workspace.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMax blocklists to return (1-100)
offsetNoPagination offset
workspace_idNoWorkspace ID (UUID). Defaults to the workspace the API key is bound to.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
totalNo
offsetNo
blocklistsYes
Behavior3/5

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the description adds no extra behavioral details. It merely states 'list', which is consistent but not enriching.

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 no wasted words. Front-loaded and efficient.

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?

The output schema exists, so return values are covered elsewhere. However, the description does not mention that workspace_id defaults to the bound API key workspace, which is only in the schema.

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 description coverage is 100%, so the schema documents all parameters adequately. The description does not add any parameter information beyond what is already in the schema.

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 'list' and the resource 'blocklists' within a workspace, distinguishing it from siblings like 'get-blocklist-ips' and 'update-blocklist'.

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 such as 'get-blocklist-ips' or 'list-alerts'. The description lacks context for selection.

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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