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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety profile is covered. The description adds genuine value beyond that by disclosing the response composition (status plus payments made against it) despite there being no output schema, though it says nothing about missing-id/404 behavior.

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 sentence that front-loads the tool's purpose, appends the return payload, then the sibling routing hint and the underlying endpoint. Every clause carries information; nothing is padding.

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 one-parameter read tool with no output schema, the definition covers what it fetches and roughly what comes back, which is enough to call it correctly. It stops short of detailing the full field set of a payment request or error conditions, so not a 5.

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% and the schema itself explains the 32-character hex id and its origin in instamojo_list_payment_requests. The description only restates 'by id' and adds no format or source detail beyond the schema, so baseline 3 applies.

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 ('one payment request by id') plus the payload content ('status and the payments made against it'). The singular 'by id' scope implicitly but clearly separates it from instamojo_list_payment_requests, and it even names the sibling that consumes the returned payment ids.

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?

Usage is implied by the 'by id' scope, and the description routes downstream work to instamojo_get_payment. However, it never explicitly says when to call this instead of instamojo_list_payment_requests, nor what to do if the request id is unknown.

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