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search_catalog

Search PostgreSQL database catalog for relations, routines, types, collations, and extensions by name or comment fragment. Filter by object kind, schema, and limit results.

Instructions

Search relations, routines, types, collations, and extensions

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
termYesCase-insensitive name or comment fragment
limitNoMaximum matches
offsetNoResult offset
object_kindNoOptional exact object-kind filter
schema_nameNoOptional exact schema filter
include_systemNoInclude pg_catalog and other system schemas
Behavior2/5

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

No annotations provided, so description carries full burden. It only states the action and objects without disclosing behavior like case-insensitivity, pagination, default filters, or result format. Critical behavioral traits are missing.

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?

Single sentence, front-loaded with purpose. Very concise but possibly too brief, omitting key information that could fit in 2-3 sentences.

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?

Lacks explanation of return values, result structure, or typical usage context. Without output schema or detailed description, an agent has insufficient context to trust the tool's output.

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?

Schema description coverage is 100% so baseline is 3. The description adds no extra meaning beyond the schema; it does not explain parameter context or usage nuances.

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

Purpose5/5

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

Description clearly states the verb 'search' and specific resource types (relations, routines, types, collations, extensions), distinguishing it from sibling tools like list_schemas or get_object_details.

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 explicit guidance on when to use this tool versus alternatives like execute_sql or list_objects. The description implies it's for broad catalog search but lacks when-not-to-use or alternative comparisons.

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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