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mjgmario

Spanish Public Data MCP

by mjgmario

list_open_data_publishers

Retrieve a list of government agencies and organizations that publish datasets on the Spanish open data portal datos.gob.es.

Instructions

List publishers/organizations in datos.gob.es (government agencies that publish datasets).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum results to return
Behavior2/5

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

With no annotations provided, the description bears full responsibility for behavioral disclosure. It does not mention pagination, ordering, or the structure of the response (e.g., whether it returns full objects or just names). The limit parameter suggests pagination but is not clarified.

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 a single 12-word sentence with no extraneous information. It is highly efficient and front-loaded.

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 tool's simplicity (one optional parameter, no output schema, no annotations), the description is minimalist but adequate. However, it could be improved by noting the return format or sorting behavior. It meets the minimum but has clear gaps.

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?

The single parameter 'limit' is already well-documented in the schema with a description, default, and constraints. Schema coverage is 100%, so the baseline is 3. The description adds no additional meaning beyond what the schema provides.

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 explicitly states the verb 'List', the resource 'publishers/organizations', and the context 'datos.gob.es (government agencies that publish datasets)'. It clearly distinguishes this tool from sibling tools like list_open_data_themes or search_open_data.

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 search_open_data. There is no mention of when not to use it or of any prerequisites. The description only implies usage for retrieving all publishers.

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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