divine_get_lal_kitab_antardasha_content

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

Annotations already cover the safety profile (readOnlyHint=true, idempotentHint=true, destructiveHint=false). Beyond those, the description adds genuinely useful behavior: 'Not every planet pair is valid; the API lists the valid antardashas on mismatch'. This tells the agent that invalid input yields a fallback payload rather than an error, which is non-obvious and not carried in the annotations. The 'no birth data needed' caveat is additional useful context. No contradiction with 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?

The first sentence front-loads the core purpose plus the key no-birth-data caveat. The short second paragraph adds scope and the mismatch behavior in two brief sentences. There is minor redundancy — 'textual Lal Kitab interpretation' and 'Returns the Lal Kitab reading' say nearly the same thing — but overall the description is tight and scannable.

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?

This is a simple read-only retrieval tool with 100% schema coverage, a full set of safety annotations, and an output schema (so return format is documented elsewhere). The description covers the two non-obvious facts an agent must know: no birth data required, and invalid pairs return the valid option list rather than failing. The only real gap is the lack of explicit wiring to the sibling divine_get_lal_kitab_mahadasha_content, but overall the tool is well specified for its complexity.

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%, so the schema already documents all three parameters. The antar_dasha schema description already covers the mismatch behavior ('on a mismatch the API replies with the valid options'), so the tool description adds no parameter meaning beyond it. The description's 'named period pair' phrasing adds nothing the schema lacks. Baseline 3 is appropriate when the schema does the heavy lifting.

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 states a specific verb and resource: 'Get textual Lal Kitab interpretation of a Mahadasha-Antardasha combination'. The phrase 'no birth data needed' usefully narrows scope, distinguishing this from general dasha tools like divine_get_antar_dasha_analysis. However, it never explicitly contrasts with the closest sibling divine_get_lal_kitab_mahadasha_content, leaving the agent to infer the difference (antardasha pair vs. single mahadasha) from the name alone.

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?

The description implies when to use it — when you want a period-pair reading without birth data — but gives no explicit routing. It does not mention alternatives or state when NOT to use it, such as preferring divine_get_lal_kitab_mahadasha_content for a single mahadasha interpretation. The mismatch note is behavioral guidance, not usage guidance. This meets the minimum but leaves sibling differentiation to inference.

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