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daedalus

mcp-redis-server

redis_zscore

Get the score of a member in a Redis sorted set. Pass the key and member to retrieve the score.

Instructions

Get the score of a member in a sorted set.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
keyYesThe sorted set key.
memberYesMember name.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations, the description carries the full burden of behavioral disclosure. It does not describe what happens if the member is not found, if the key does not exist, or if the key is not a sorted set. The read-only nature is implied but not explicit.

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

Conciseness4/5

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

The description is a single sentence, very concise and front-loaded. It efficiently conveys the tool's purpose without extraneous information.

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

Completeness2/5

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

The description lacks behavioral details and usage context. Although an output schema exists (not shown), the description does not address error cases or prerequisites, making it incomplete for a tool with no annotations.

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?

Both parameters have schema descriptions ('The sorted set key.' and 'Member name.') with 100% coverage, so the description adds no additional semantic value. Baseline score of 3 is appropriate as the schema already suffices.

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

Purpose4/5

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

The description clearly states the action ('Get') and the resource ('score of a member in a sorted set'). It is specific enough to differentiate from sibling tools like redis_zadd or redis_zrange, though it does not explicitly distinguish from other Redis get operations.

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 usage guidelines are provided. The description does not indicate when to use this tool versus alternatives, nor does it mention prerequisites such as key existence or member presence. This leaves the agent without guidance on proper invocation context.

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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