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

Annotations already declare destructive=true, openWorld=true, and idempotent=false, so the safety bar is lower; the description nonetheless adds the concrete two-phase protocol (preview first, then owner-approved confirm:true reusing requestId) and the 'claim live only when status is active' caveat. That is meaningful behavioral context beyond the hints, though it stops short of saying what is permanently destroyed or how to recover outcomes.

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 description is short and front-loads the workflow constraint, but the telegraphic colon-heavy phrasing ('Spending/deletion: ', 'Fields: soclo://tools/...') is dense to the point of ambiguity. The trailing 'Fields:' pointer to a URL reads as boilerplate rather than instructive content.

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 destructive spending tool with 10 parameters, a nested payload, and no output schema, the description covers the confirmation gate but omits what a successful call returns (prediction ID/status), how to poll it via get_rf_prediction or operation_status, and how the payload fields shape the prediction. It is adequate on process, incomplete on outcome and parameters.

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 only 60%, and the entire nested payload object (reach, frequencyCap, budgetAmount, targeting, placements, startDate/endDate) carries no descriptions in either the schema or the description. The description only echoes the confirm/requestId semantics already documented in the schema ('confirm:true with the same requestId'), adding essentially nothing for the undocumented parameters.

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 first sentence 'Soclo Ads: Create reach-frequency prediction' largely restates the title and tool name, adding little beyond the verb+resource already visible. It does not distinguish this from close siblings such as soclo_ads_reserve_rf_prediction, soclo_ads_get_rf_prediction, soclo_ads_cancel_rf_reservation, or soclo_ads_estimate_ad_reach, so an agent gets the general idea but no selection signal.

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?

'Spending/deletion: preview, then owner-approved confirm:true with the same requestId' communicates a real precondition for invoking this tool. However, it never states when to choose this over reserve/cancel/estimate siblings, nor what happens if confirm is omitted, leaving the when-to-use-vs-alternatives dimension only implied.

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