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gbif_species_distributions

Read-onlyIdempotent

Retrieve known geographic distribution records for a species to show where it occurs, whether native or introduced, and its presence status.

Instructions

Get known geographic distribution records for a species. Includes information about occurrence status, establishment means, and locality details.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
keyYesGBIF species key. The unique identifier of the species whose geographic distribution you want to retrieve. Example: 5219404 (Panthera leo) returns distribution records showing where lions occur (e.g., sub-Saharan Africa), their establishment status (native/introduced), and occurrence status (present/absent/extinct). Includes both native and introduced ranges.
limitNoMaximum number of distribution records to return per page. A species may have distribution records for multiple regions/countries. Range: 1-1000, default: 20.
offsetNoPagination offset. Determines the starting point for results. A limit of 20 and offset of 40 will get the third page of 20 results. Default: 0.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.1.0

TDQS

B3.4/5.0
Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so the safety profile is fully covered. The description adds useful content context by naming the record fields (occurrence status, establishment means, locality details), but it does not mention pagination behavior, rate limits, or authentication requirements. This is adequate but 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?

Two sentences, zero waste, and the core purpose is front-loaded. The second sentence efficiently lists the record contents without padding.

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

Completeness4/5

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

For a simple read-only list tool with a fully described schema and safety annotations, the description is nearly complete. It conveys the return-content categories, though it stops short of noting that results are paginated or describing the record shape, which would help since no output schema exists.

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 already fully documents key, limit, and offset. The description adds no parameter-level meaning, syntax, or format details beyond what the schema provides. A baseline 3 is appropriate.

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 states a specific verb and resource: 'Get known geographic distribution records for a species.' It clarifies the kind of data returned (occurrence status, establishment means, locality details), which separates it from generic species lookup tools. It does not explicitly name sibling alternatives like gbif_species_get or gbif_occurrence_search, so it falls short of 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 when-to-use guidance, no exclusions, and no mention of alternative tools. An agent must infer that this is for distribution data specifically and cannot tell from the description alone how it differs in use case from gbif_species_get, gbif_maps_get_tile_url, or gbif_occurrence_search.

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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