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open-meteo-mcp-lite

open-meteo-mcp-lite

by ominiverdi
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Remote

set_default_location

Set a default location so weather queries return forecasts without requiring a location each time.

Instructions

Set a default location for weather queries when no location is specified

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "set_default_location"
  }
}

Input Schema

NameRequiredDescriptionDefault
nameNoCustom name for the location (used with coordinates)
latitudeNoLatitude coordinate
locationNoCity name to set as default
longitudeNoLongitude coordinate

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

A3.7/5.0
Behavior2/5

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

With no annotations, the description carries full burden for behavioral disclosure. It indicates a state-changing operation but does not disclose whether it overwrites an existing default, the persistence scope, or any validation/error behavior. This is a significant gap for a mutation tool.

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?

A single, front-loaded sentence that uses the verb 'set' and includes the key context. No redundancy or wasted words.

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 tool has moderate complexity (4 optional parameters, no output schema, no annotations). The description covers the core purpose but omits details on parameter grouping, persistence, and expected return. It is adequate but not complete.

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 each parameter has a description. The tool description does not add clarity on the required combination (location OR latitude/longitude+name), but since the schema already documents individual parameters, the baseline of 3 applies.

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 specific action (set) and resource (default location), and adds the context of weather queries with no location specified. This distinguishes it from siblings like get_default_location and search_location.

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?

The description implies when to use the tool: to establish a default so weather queries can omit location. It does not explicitly mention alternatives or exclusions, but the sibling tools' names and the clear verb 'set' provide enough context for the agent.

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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