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sprine

ontario-data-mcp

by sprine

list_topics

Read-only

Retrieve top tags/topics across Ontario data portals, ranked by dataset count. Filter by keyword or portal to narrow results.

Instructions

List top tags/topics used across data portals, ranked by dataset count.

Args: query: Optional filter to match tag names portal: Narrow to one portal. Default: all portals. limit: Max tags to return (default 100). Use a higher value to see more.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryNo
portalNo
limitNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

Annotations already declare readOnlyHint=true and destructiveHint=false. The description adds behavioral details like ranking and optional filters, but lacks info on authentication or rate limits.

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?

Two sentences and a bullet list of args, all essential and front-loaded with the purpose. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a read-only listing tool with existing output schema, the description covers purpose, parameters, and sufficient behavior. No gaps.

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

Parameters5/5

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

The description fully compensates for 0% schema coverage by explaining each parameter's purpose, defaults, and a hint for higher limit values.

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 'top tags/topics' ranked by dataset count, distinguishing it from sibling tools like list_organizations or list_portals.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It implies use when needing top tags, but does not explicitly state when not to use or compare with alternatives.

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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