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

Annotations only declare the generic write profile (readOnlyHint=false, destructiveHint=false, idempotentHint=false), so the description's two-phase approval model is real added value: no mutation occurs until human approval plus execute_approved_action, and self-approval is impossible. The note that approval requirements are administrator-configurable while business workflow approvals always apply explains why the tool may block. It stops short of saying what happens on rejection or whether a retry duplicates the attachment.

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 approval guarantee is front-loaded and earns its place, but the trailing line 'MCP approval requirements are configurable by the organization administrator; business workflow approvals always apply' is verbose policy boilerplate that partially restates the prior sentence. The first clause about 'field_operations records in the connected organization' is filler.

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 no explanation, and the behavioural/approval side is well covered for a mutation tool. The gap is on input: a nested six-field payload with an enum and a constrained storageKey pattern is entirely undocumented, so an agent can know when the tool applies but still not how to populate it correctly.

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% and the payload nests six fields under 'data' (docType enum, title, storageKey, fileName, fileSize, expiresAt). The description never mentions siteId, the docType enum values, the required storageKey format for an uploaded object, or that expiresAt is optional — 'owned uploaded' only hints at the storageKey precondition. With a nested object and zero schema documentation, the description needed to carry this and does not.

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 — 'Attach an owned uploaded closeout document' — which is clearly distinguishable from the many other attach_*_document siblings (bid, permit, project, site, task, utility). The opening clause about 'RetailHardHat field_operations records in the connected organization' is boilerplate that adds little, but the core sentence is precise.

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?

'Use this when working with RetailHardHat field_operations records' is a generic invocation frame, not a real condition. The genuinely useful guidance is in the middle: the document must already be owned/uploaded, the agent cannot self-approve, and nothing happens until a human approves in Settings > MCP and execute_approved_action is called — that routes the agent to a sibling. It says nothing about when to prefer this over update_closeout_document or list_closeout_documents, which are the closest ambiguous neighbours.

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