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

With no annotations, the description carries the full burden and discloses only one trait: the call is free (no credit consumption). It says nothing about default row count, pagination, ordering, or what a 'usage row' contains, all of which an agent needs for a read-only accounting endpoint.

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?

Two short sentences, front-loaded with the core action and no filler. It is efficient, though the brevity shades into under-specification rather than tight precision.

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 tool with zero annotations, no output schema, and an undocumented parameter, the description leaves too much unresolved: no return shape, no default limit, no time window. A 'usage' concept especially needs a scope definition (per tool? per day?) that is entirely missing.

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% for the single `limit` parameter, and the description never mentions it. Default behavior when `limit` is omitted (a 1–100 range with no documented default) is left entirely to inference.

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?

States a specific verb and resource: 'Return recent usage rows for the account.' An agent can tell this is a read of usage data rather than balance or account metadata. It stops short of explicitly distinguishing itself from close siblings like fikra_get_balance or fikra_check_topup_status.

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 statement of when to use this versus fikra_get_balance, fikra_get_account, or fikra_check_topup_status, and no exclusions or prerequisites. 'Recent' implies a recency filter but never defines the window. The only guidance-like signal is 'Free'.

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