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pharo-smalltalk-interop-mcp-server

search_traits_like

Search for Pharo Smalltalk traits matching a name pattern. Enter a query to get a list of trait names.

Instructions

Find traits matching a pattern.

Args: trait_name_query: The pattern to search for in trait names

Returns: dict: API response with success/error and result - Success: {"success": True, "result": list[str]} - result contains list of matching trait names - Error: {"success": False, "error": str} - error contains error message

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
trait_name_queryYesThe pattern to search for in trait names

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses that the tool returns a dict with success/error and a list of matching traits, but does not mention side effects, authorization needs, or that it is read-only. The return format is described beyond the schema, which adds some value.

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 concise with a single sentence plus structured Args/Returns. No extraneous information, though it could be more tightly formatted.

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

Completeness4/5

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

The description adequately covers the tool's operation, parameter, and return structure. However, it does not specify the pattern syntax (e.g., SQL LIKE vs regex), which is a minor gap.

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 coverage is 100%, and the description's Args section simply restates the schema description without adding new meaning. Baseline 3 is appropriate.

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?

The description clearly states 'Find traits matching a pattern', which is a specific verb+resource combination. It distinguishes from sibling tools like search_classes_like and search_methods_like by specifying 'traits'.

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 like search_classes_like or search_references. No when-not or explicit context is given.

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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