Retrieve memory diagnostics for a Redis or Valkey instance, including MEMORY DOCTOR assessment and MEMORY STATS breakdown for performance analysis.
Get memory diagnostics: MEMORY DOCTOR assessment and MEMORY STATS breakdown.
| Name | Required | Description | Default |
|---|---|---|---|
| instanceId | No | Optional instance ID override |
Changes observed during successful MCP inspections.
v0.20.2v0.20.1v0.16.0Input schema / additionalPropertiesRemoved value: -falsev1.0.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description bears full responsibility for disclosing behavior. It only indicates a read operation ('Get') without mentioning side effects, permissions, rate limits, or output details.
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?
The description is a single, concise sentence that immediately states the tool's action and key outputs. No unnecessary words, though it could provide more detail without becoming verbose.
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?
The tool has one optional parameter and no output schema. The description names two diagnostic categories but does not explain their structure or format, leaving some ambiguity about what the tool returns.
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?
With 100% schema coverage (only one optional string parameter described as 'Optional instance ID override'), the description adds no additional meaning beyond the schema. Baseline of 3 is appropriate.
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 clearly states the tool's purpose: 'Get memory diagnostics' and specifies two concrete components (MEMORY DOCTOR assessment and MEMORY STATS breakdown), making it distinct from sibling tools that focus on cache, health, connections, etc.
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?
The description provides no guidance on when to use this tool versus alternatives, nor does it mention any prerequisites or exclusions. Agents receive no context about appropriate use cases.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.