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

With no annotations, the description carries the full burden and does well: it discloses provenance ('found and cited, never generated') and a notable failure mode (honest silence when no single parable fits). It stops short of describing length, permissions, or latency, but for a read-oriented tool this is solid disclosure.

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 core action is front-loaded in the first clause, and the sentence earns most of its length by specifying concrete outputs and the silence fallback. Some framing is opaque jargon ('The WALK door's final register ... a story you walk into'), which adds mood but not much selection value.

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 a single-parameter tool with no output schema, the description tells the agent what comes back (story verbatim, explanation where given, one next step) and how failures are represented (silence). That covers the essentials an agent needs to invoke and interpret it.

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 coverage is 100% with one required string parameter, so the schema already documents the input. The description's 'bring a situation in your own words' echoes the schema's own text rather than adding format or constraint detail beyond it.

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 names a specific verb and resource — surface a situation, receive the matching parable of Christ — and concretizes the output (verbatim story, Christ's own explanation, one next step) with named examples (Prodigal Son, Good Samaritan, Talents, Sower). It is clearly distinguishable from generic retrieval siblings like search, read_passage, or lookup.

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?

It gives clear context for use — bring a situation in your own words — and even handles the negative case where no single parable fits, returning honest silence. It does not, however, name alternative sibling tools or explicitly state when another tool would be preferred.

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