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

Annotations already flag this as a non-idempotent, non-destructive mutation; the description adds real behavioral context beyond them - approval ceilings, downstream approval steps still applying, and organization-configurable MCP approval requirements. Missing details like effect on the request state after a decision, but the added value is clear.

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 dense sentences, front-loaded with the core action, then prerequisites, then policy caveats. No filler, though the final sentence about administrator configuration is slightly tangential to invoking the tool.

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 not be explained, and the description covers prerequisites and approval policy. The main gap is per-parameter explanation for requestId and notes, which the schema does not supply either.

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 must carry parameter meaning. It explains the approve/reject action semantics and the approval-ceiling nuance, but says nothing about requestId or the optional notes field, leaving half the payload unexplained.

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 ('Record ... explicit approve/reject decision') against a specific resource ('a rfp') and scopes it to the current human user. This clearly separates it from submit_rfp_approval_request and cancel_rfp_approval_request without needing to name them.

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 concrete preconditions: exact-change review required and must be an assigned current-step approver. It also clarifies that amount ceilings bind approvals only, not rejections. It stops short of explicitly pointing to the submit/cancel siblings, but the when-to-use context is strong.

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