Retrieve application metrics from Spring Boot Actuator endpoints. Access all metrics or a specific metric by name.
Read /actuator/metrics or one metric.
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": "get_metrics"
}
}| Name | Required | Description | Default |
|---|---|---|---|
| metric | No | ||
| application | No |
Changes observed during successful MCP inspections.
v0.1.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It only says 'Read', implying read-only operation, but gives no details about authentication, error handling, or side effects. This is insufficient for safe usage.
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?
Extremely concise at 7 words, front-loaded with 'Read'. However, the brevity sacrifices clarity for conciseness, making it slightly under-specified.
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?
Given the tool's simplicity (2 params, no output schema, no annotations), the description is too sparse. It fails to explain return values, error scenarios, or prerequisite actuator setup, leaving gaps for the agent.
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?
Schema has 0% description coverage. The description hints that the 'metric' parameter specifies which metric to read, but doesn't explain the 'application' parameter or that omitting 'metric' lists all metrics. This leaves ambiguity.
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?
The description states 'Read /actuator/metrics or one metric', which clearly identifies the resource and the action (read). It distinguishes the tool as specific to Spring Boot Actuator metrics, though it doesn't explicitly differentiate from sibling actuator tools.
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?
No guidance on when to use this tool versus alternatives like get_health_status or get_info. The description lacks context about its role within the broader set of actuator endpoints.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.