get_schumann_resonanceReturns the current Schumann resonance reading — Earth's electromagnetic pulse measured at the Tomsk observatory. Includes frequency, energy score, activity level, and spectrogram URL.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
| Name | Required | Description | Default |
|---|---|---|---|
| source | No | ||
| status | No | ||
| amplitude | No | ||
| frequency_hz | No | ||
| last_updated | No |
Changes observed during successful MCP inspections.
Output schema / (root)Previous value: -nullNew value: +{
+ "$schema": "http://json-schema.org/draft-07/schema#",
+ "additionalProperties": true,
+ "properties": {
+ "amplitude": {
+ "type": "number"
+ },
+ "frequency_hz": {
+ "type": "number"
+ },
+ "last_updated": {
+ "type": "string"
+ },
+ "source": {
+ "type": "string"
+ },
+ "status": {
+ "type": "string"
+ }
+ },
+ "type": "object"
+}Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false. The description adds value by specifying the exact data returned (frequency, energy score, activity level, spectrogram URL) and the observatory source, providing context beyond the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence, efficiently conveys key information without extraneous detail. Front-loaded with the main action and return data.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Has output schema to document return values; description covers the essential aspects: what it does, what data it returns, and the source. No gaps remain.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
No parameters exist, and schema description coverage is 100% (0 parameters). With no params, the baseline score is 4; the description does not need to add parameter information.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states the tool returns the current Schumann resonance reading with specific fields (frequency, energy score, activity level, spectrogram URL) and source (Tomsk observatory). Distinguishes from sibling tools like get_weather or get_moon_phase due to its niche topic.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Description implies the tool is for retrieving Schumann resonance data, but does not explicitly state when to use it versus alternatives, nor provide any exclusions or prerequisites. The context of sibling tools helps but is not part of the description.
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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