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

Annotations already declare readOnlyHint=false, destructiveHint=false and openWorldHint=false, so the write-but-not-destructive profile is known from structured data. The description does add genuine behavioral context beyond that: the payload is "bounded" and explicitly excludes board content and credentials, which is useful privacy/scope information for a telemetry sink. It still omits failure behavior, whether calls are idempotent per eventId, or any volume expectations.

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?

Two short, front-loaded fragments with no filler or repetition, and the most important exclusion (no board content or credentials) is stated up front. The terseness is efficient rather than noisy, though the sentence fragments lack a subject and read more like an internal note than an instruction.

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?

For a nine-parameter write tool with a five-enum payload, zero schema descriptions, and required fields including UUID-formatted eventId and sessionId, this description is far too thin. The output schema is present so return values need not be explained, but the caller-critical questions — what each enum means, when a call should be emitted, and what makes a record valid — are entirely unaddressed.

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% across nine parameters, so the description carries the full burden and largely fails it: no parameter is named or explained. The single relevant hint is that the payload excludes board content and credentials, which implies the caller must not smuggle design data into fields like versionId or sessionId, but nothing explains kind, view, action, failure, durationMs, or displayMode.

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 conveys the domain ("display and interaction telemetry") and a scope constraint ("app-only"), so an agent can tell this is an internal telemetry-recording tool rather than a board-content reader like get_board or read_schematic. However it never uses a verb such as "records" and never names the event resource explicitly, so the purpose is inferred as much from the tool name as from the description itself.

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?

"App-only" hints at a caller restriction, but it is ambiguous whether that means only the host app may call it or only app-level events are recorded. There is no explicit statement of when an agent should call this versus the read-only siblings, and no note about prerequisites, session requirements, or whether agent-invoked calls are even appropriate.

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