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

Annotations only flag destructiveHint=true and readOnlyHint=false; the description carries the real burden and does so thoroughly. It discloses the two-phase confirmation behavior, preview payload on non-confirmed calls, routeToken lifecycle and invalidity rules, the preflight-is-not-confirmation caveat, and the nuanced guidance to treat a later lookup error as inconclusive rather than a failed delete. No contradictions with annotations.

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 long but every sentence earns its place for a destructive transactional tool; purpose is front-loaded and the density is justified. Minor redundancy exists (token rules and confirmation requirements are restated in slightly different phrasings), so it is not maximally tight.

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 no output schema, destructive complexity, and an ambient set of similar delete tools, the description covers the two-phase response behavior, verification nuance, and token constraints well. Remaining gaps are the undocumentd confirmDelete parameter and the absence of a pointer to close_quote for open-quote handling. Still, most of what an agent needs to call correctly is present.

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 83%, so the baseline is 3; the description adds genuine value by explaining the confirmWrite mechanics ('returns confirmation_required and a payload preview'), the token validity window, and the placeholder-token rule. However, the confirmDelete parameter has virtually no schema documentation (only a default of false) and is never mentioned in the description — a meaningful gap for a delete tool with two confirmation-style booleans, since an agent may conflate them.

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?

Opens with a specific verb+resource+mechanism: 'Deletes a BRC quote by id using timestamp confirmation.' This clearly distinguishes it from the many sibling delete_* tools (which target other resources) and from brc_close_quote, whose semantics are different. The preview workflow described next makes the scope unmistakable.

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?

Provides rich procedural guidance: load-then-preview-then-confirm flow, the two-phase confirmWrite contract, token requirements, and the caution to confirm quotes by id rather than reference. However, it never explicitly contrasts with alternatives such as brc_close_quote or brc_update_quote, or states when deletion should NOT be used, leaving sibling differentiation mostly to inference.

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