mixx_vinyl

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

With no annotations at all, the description carries the full behavioral burden, and it only partially does so: it discloses the return envelope and that 'catalog' runs an OCR pipeline over a directory, implying file ingestion and database writes. It says nothing about permissions, whether cataloging is idempotent or destructive to existing rows, or rate/time costs for a batch pipeline.

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

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

The description is front-loaded with purpose, then operations, then return shape, then examples — a sensible priority order with headers that make it skimmable. The examples are useful rather than padding, though the statement of the return format is somewhat redundant given an output schema exists.

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

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

For an 8-parameter, 5-operation portmanteau with no sibling-level annotation help, the definition covers purpose, per-operation intent, required arguments, and call examples, which is enough to invoke it correctly. The remaining gaps — no safety profile for the OCR/write path and no clarification of count vs limit — are real but secondary.

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

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

Schema description coverage is 0%, so the description must compensate, and it largely does: it binds directory to catalog, query to gig_pick/search, vinyl_id to crossref, and genre/era/limit to search. It leaves ambiguity on two parameters — the distinction between count (gig_pick) and limit (search) is never explained, and the accepted format of era is undefined.

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

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

The description opens with a specific verb+resource combination ('Vinyl record catalog and search tool') and enumerates the five operations it consolidates, so an agent knows exactly what domain it covers. It does not explicitly distinguish itself from plausible siblings like mixx_library or mixx_crate, which is the only thing keeping it from a 5.

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

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

The SUPPORTED OPERATIONS block functions as routing guidance: 'catalog' for ingesting a photo directory, 'search' for query/genre/era lookup, 'gig_pick' for natural-language selection, 'crossref' for Plex matching, 'stats' for a summary, each with a 'requires X' precondition. This is clear when-to-use-which-operation context, but it offers no exclusions or comparison against the sibling vinyl/library/crate tools.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.