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

Annotations already declare readOnly, idempotent, non-destructive, closed-world behavior, so safety is covered. The description adds a genuinely useful behavioral trait beyond that: matching tolerates inexact names and spellings, which tells the agent to use it as a fuzzy lookup rather than exact retrieval. It does not mention result ordering or limit behavior, but that is minor here.

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?

Two sentences, no filler, and the core purpose is front-loaded ahead of the usage hint and next step. Every clause contributes either scope or routing information.

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?

An output schema exists and the input schema is fully described, so the description need not explain return values. The mention of opening results with lookup or get_theme effectively signals that results carry usable identifiers, leaving little an agent needs to infer before calling.

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%, with query and limit both documented in the schema including example values. The description only restates that the query is a name or subject, adding no format or syntax detail beyond the schema, so the baseline 3 applies.

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 (find) and resource set (Bible people, places, themes, dictionary entries) matched by name or subject. This implicitly separates it from siblings like search_scripture and search_writings, though it never names those siblings explicitly.

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?

Gives a clear trigger ('use when you're not sure of the exact name or spelling') and a follow-up path ('open a result with lookup or get_theme'). It lacks an explicit exclusion, e.g. when to prefer search_scripture or lookup directly, so it stops short of full routing guidance.

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