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

Annotations already declare readOnly, idempotent, non-destructive, non-open-world behavior, so the safety profile is covered. The description adds genuinely useful context beyond them: the delivery timing tied to each person's local 8am and that wording is taken verbatim from the stored KJV, which sets expectations about consistency across callers.

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, both load-bearing: the first defines what is returned and to whom, the second defines when to reach for it. No filler, and the core identity is front-loaded.

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, so return-value detail is unnecessary here, and annotations cover the safety profile. What remains — the shared-per-day semantics, the source translation, and the invocation triggers — is all present, so an agent has everything needed to call it correctly.

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 single 'date' parameter is fully documented in the schema, so the baseline of 3 applies. The description only implies a per-day scope ('a given morning') and adds no format or default semantics beyond what the schema already states.

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 precise resource and scope: 'the one verse the whole Living Bread family receives on a given morning'. That single-verse, shared-everyone framing cleanly separates it from query-oriented siblings like scripture_search, verses_for, and scripture_passage without ambiguity.

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 concrete trigger phrasings ('verse of the day', 'today's bread') and a use case (praying the same word the family is praying). It stops short of naming an alternative tool or an explicit when-not-to-use condition, so it is strong context rather than full routing guidance.

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