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analyze_db_health

Check PostgreSQL database health metrics including indexes, connections, vacuum, sequences, replication, buffers, and constraints.

Instructions

Analyze database health. Valid values: index, connection, vacuum, sequence, replication, buffer, constraint, all; comma-separated values are accepted.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
health_typeNoall
Behavior2/5

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

No annotations are provided, so the description must disclose behavioral traits. It does not mention whether the analysis is read-only, requires special permissions, or has any side effects. The description only states valid input values, omitting important behavioral context.

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?

The description is very concise with two sentences, no redundant information, and directly conveys the tool's purpose and valid inputs.

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?

Given the single parameter and no output schema, the description covers the valid inputs but lacks explanation of the output format or return behavior. It does not indicate whether the tool is safe to run without side effects, which is important for a health analysis tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0% description coverage, so the description adds significant value by listing all valid values for the health_type parameter and noting that comma-separated values are accepted. This clarifies usage beyond what the schema provides.

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 tool 'Analyze database health' and lists valid health types. However, it does not explicitly differentiate from sibling tools like get_runtime_metrics or analyze_workload_indexes, which also analyze database aspects.

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?

The description provides no guidance on when to use this tool versus alternatives. It only lists valid values for the health_type parameter without explaining typical use cases or when other tools might be more appropriate.

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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