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mbta_list_all_facilities

List all MBTA facilities; optionally apply a fuzzy search filter to narrow results by facility name.

Instructions

List all MBTA facilities with optional fuzzy filtering. Returns all facilities without specific filters, with client-side fuzzy search.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryNoOptional fuzzy search query to filter facilities by name
max_resultsNoMaximum number of results to return (default: 50)
Behavior3/5

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 mentions 'client-side fuzzy search' and 'returns all facilities without specific filters', which are helpful. However, it does not mention pagination or limits, though max_results in schema partially covers this.

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?

Two sentences, front-loaded with the core purpose and filtering capability. No redundant 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 tool has no output schema, so the description should explain return structure. It only says 'returns all facilities', leaving the response format unspecified. For a list tool, this is a significant 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 description coverage is 100%, and the description adds 'client-side' detail to the query parameter. This adds marginal value, but baseline is 3 due to high schema coverage.

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 lists MBTA facilities with optional fuzzy filtering. It distinguishes from sibling list tools by specifying the resource type, but does not explicitly differentiate from mbta_get_facilities.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for listing facilities with or without a fuzzy query, but does not provide guidance on when to use this tool versus alternatives like mbta_get_facilities for specific lookups.

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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