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

Goes well beyond the destructiveHint=true and idempotentHint=false annotations by disclosing exactly what is overwritten (partial birth details) and the downstream side effects (cleared cached calculations, recalculation started). It also states the human-confirmation requirement, which is real behavioral context an agent cannot get from annotations.

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 sentences, all front-loaded: what it saves, the preconditions, then the destructive side effects. Not one sentence could be dropped without losing routing or safety 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 so return values need no explanation, and the dangerous-write profile is fully covered. The remaining gap is that optional geo/timezone parameters go entirely unaddressed despite affecting the correctness of what gets stored.

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 0%, so the description carries the burden, and it does clarify the four required fields and the confirmed_profile_write consent semantics. However, birth_timezone, birth_latitude, birth_longitude, and language are never mentioned, leaving half the parameters with no explanation of when or why to supply them — significant for an astrology tool where geo/timezone data drives accuracy.

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?

Names a specific verb and resource combination (save a complete birth date, time, and place to the user's Vedara account) plus a precondition (no complete profile already saved). This clearly separates it from read tools like get_my_chart, though it never names the obvious create-vs-update sibling, update_my_birth_profile.

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 an explicit triggering condition ('when no complete birth profile is already saved') and a hard consent gate ('requires confirmed_profile_write to be true after confirming the exact details with the user'). It stops short of naming update_my_birth_profile as the alternative for the already-populated case, leaving that inference to the agent.

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