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

The description adds meaningful behavioral context beyond annotations: it specifies accepted input formats (YAML/JSON), requires the full UnifiedProtectionCard, explains the server-side merge across platform→org→team→agent cascade, and mentions the Idempotency-Key requirement. This complements the annotations (destructiveHint, idempotentHint) without contradicting them, though the truncated ending leaves some details unstated.

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 a single dense sentence that front-loads the core action ('Publish or replace') and then efficiently packs key details: formats, body requirement, composition behavior, and idempotency requirement. It is appropriately concise for the complexity, though the truncated 'Hon...' leaves an incomplete thought and the sentence is slightly overloaded.

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?

Given the high complexity (7 parameters, nested objects, output schema), the description covers essential aspects: purpose, input format, body structure, composition semantics, and idempotency requirement. The output schema handles return-value documentation. Missing details like error cases or permission requirements are not expected at this level, but a bit more explicit guidance on usage vs alternatives would strengthen it.

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 100%, so the baseline is 3. The description adds high-level context (body is the full card, composed server-side), but does not detail individual parameters beyond what the schema already provides. It adequately reinforces the 'full card' notion but does not deeply enhance parameter-level understanding.

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 description uses a specific verb+resource pair ('Publish or replace the protection manifest') and clearly distinguishes itself from sibling tools like preview_compose_protection_by_agent (which previews instead of writing) and put_alignment_by_agent (which handles alignment, not protection). It also explains the composition cascade, making the tool's responsibility unambiguous.

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?

The description implies when to use it: it is the write path for protection cards, as opposed to preview_* siblings. However, it does not explicitly state 'use this instead of preview' or list any exclusions or alternative conditions. The guidance is inferred from tool names and the description's wording, not explicitly stated.

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