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srstsavage

erddap-mcp-demo

by srstsavage

search_datasets

Find and filter datasets from an ERDDAP server by search query, standard name, geographic coordinates, and time range.

Instructions

List all datasets in an ERDDAP server

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pageNo
max_timeNo
min_timeNo
page_sizeNo
erddap_urlYes
max_latitudeNo
min_latitudeNo
search_queryNo
max_longitudeNo
min_longitudeNo
standard_nameNo
Behavior2/5

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

No annotations provided, so description carries full burden. It does not disclose whether the operation is read-only, pagination behavior, or any side effects. The description is silent on important behavioral traits.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very short but lacks the structure needed to convey essential information. It is terse but not concise in a helpful way, omitting critical details.

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

Completeness1/5

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

Given 11 parameters, no output schema, and no annotations, the description is grossly insufficient. An agent cannot understand how to filter, paginate, or interpret results.

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

Parameters1/5

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

With 0% schema description coverage, the description must compensate. It only states 'list all datasets', but the schema includes 11 parameters for filtering, pagination, etc. No parameter meanings are explained.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a clear verb ('List') and resource ('datasets'), but lacks specificity about filtering capabilities. It does not distinguish itself from the sibling tool 'list_datasets', which likely has similar purpose.

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 on when to use this tool versus alternatives like 'list_datasets'. No prerequisites, context, or exclusions mentioned.

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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