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

Annotations already establish readOnly/idempotent/non-destructive/open-world, lowering the bar. The description still adds useful behavior: results are returned newest-first, include every filing year, and append a count, which helps an agent interpret the response.

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?

Three tight clauses with no waste: what it returns and its ordering first, then matching semantics, then usage framing. Front-loaded and every sentence earns its place.

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?

With no output schema, the description usefully sketches the return shape (filing years, newest-first, plus a count). What/hows/output are all covered; minor gaps remain on pagination and entity-resolution fallbacks.

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 100%, and the description's matching notes ('matches the name against both the MEWA name and the sponsor name, or pass an exact EIN') largely restate what the schema already documents, adding little beyond the baseline.

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?

States a specific verb and resource ('Full Form M-1 filing history for one named MEWA or sponsor'), and scopes it to a single named entity, which implicitly separates it from a broad search sibling like dol_m1_search. It does not name that sibling explicitly, so it falls short of 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?

Clearly frames when to reach for this tool via concrete questions it answers ('has this MEWA filed Form M-1, and for which years', 'is this plan still registered'). No explicit when-not guidance or named alternative is given, so it stops short of 5.

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