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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety is covered. The description adds one genuinely useful behavioral note — that conventions are not silently mixed — but says nothing about input requirements or error handling beyond that.

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?

A single dense sentence, appropriately front-loaded with the key outputs. It is list-heavy but every clause names a distinct deliverable, so little is wasted.

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 describing return contents is partly redundant, and the description leans on that rather than on usage or parameter guidance. For a 10-parameter, low-coverage tool it should say more about inputs and when to prefer it over overlapping siblings.

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 only 30% across 10 parameters, so the description carries the burden but adds nothing about parameters. It does not explain the place-vs-coordinates branch, the timezone requirement, or birthTimeAccuracyMinutes, leaving the agent to rely on sparse schema text.

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 specific Jaimini resources (Chara Karakas, Arudha Padas, Karakamsha, Rashi Drishti matrices), so the agent knows what the tool produces. However, it does not distinguish itself from the overlapping sibling analyze_arudha_and_upapada, which also covers Arudha Padas, so differentiation is missing.

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?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives. Given siblings like analyze_arudha_and_upapada and compare_conventions that overlap with this tool's outputs, the absence of routing guidance is a real gap.

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