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

The description discloses genuinely useful behavior (per-recipient watermarking, deliberate exclusion of meeting content, traceability of forwards), but 'record that the file left' asserts a state-changing write while annotations declare readOnlyHint=true. It also never explains what destructiveHint=true means for this call, leaving the agent with a partial conflict it cannot resolve from the definition.

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 sentences, front-loaded with the operation and its output. The middle sentence about meeting reaction is abstractly phrased but earns its place as a scope boundary against the resonance/memory siblings.

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 watermark contract is well covered. However, for a call that both renders a file and records an export, the description omits failure modes (non-approved version, recipient mismatch), permission requirements, and what the recorded export actually means downstream.

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 60% and the two undocumented parameters are exactly the ones the description explains: confirmRecipient ('name the recipient exactly') and recipientWatermark ('what makes a forwarded file traceable'). It does not clarify the roles of relationshipId versus confirmRecipient or the companyId/versionId wrapper structure, so it compensates well but not fully.

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 plus its exact output: render the approved deck as a watermarked PDF for one named reader, and record that the file left. The sentence about meeting reaction implicitly separates it from the deck-resonance and relationship-memory siblings (fundraising_record_deck_resonance, fundraising_get_relationship_memory), so an agent can place it precisely.

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 a concrete operating instruction — name the recipient exactly, because the watermark is the traceability mechanism — and implies the precondition that the deck is already approved. It does not name an alternative tool or state a when-not condition, so it stops short of full routing guidance.

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