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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the safety profile is covered by structured data. The description adds that traceId comes "from a log entry" and that logs are filterable, but says nothing about pagination, rate limits, or result ordering despite an 11-parameter surface. The compact/full light-vs-full payload note exists only in the schema's mode parameter, not restated as behavioral context in the description.

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?

Front-loaded with the resource scope, then a compact pipe-delimited action index. Every clause earns its place, including the debugging scenario. The telegraphic pipe syntax is dense enough that the action list reads more like a table than prose, which slightly taxes first-pass comprehension but is efficient overall.

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 five-action, eleven-parameter tool with no output schema, the action routing and prerequisite IDs are adequately covered, but the description never indicates return shape (fields in a log entry, what a timeline step contains) nor pagination behavior for the list-style actions. Given there is no output schema to fall back on, a bit more about what comes back would materially help an agent decide whether to call this or a sibling analytics tool.

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?

At 64% schema coverage the description does genuine work by mapping parameters to actions via inline "Needs: logId" and "Needs: traceId" markers, which clarifies the action-parameter dependency that the schema only partially encodes. However, search, status, and page carry no schema description and get no explanation here — an agent cannot tell what "status" filters or what "search" matches. Meaning is added for the required-ID params but not for roughly a third of the surface.

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 ("Read workspace-level data") and enumerates the exact subject domains: activity/webhook logs, credit balance, plan quota. The action list with required IDs makes it unambiguous which of the five operations returns what, and the scope is clearly read-only workspace telemetry rather than conversations or agents. It stops short of naming which sibling tools cover adjacent needs (e.g. get_agent_usage, usage_read, call_logs_read), so sibling differentiation is by scope inference only.

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 real selection cues: "logs — recent logs, filterable" versus "log — one log entry in full", versus "log_timeline — every step of one inbound message", plus the motivating scenario "to debug 'the bot did not reply'" and per-action "Needs:" prerequisites. That is enough for an agent to pick the right action. It offers no explicit when-not guidance or pointers to alternative sibling tools for overlapping needs, which keeps it below a 5.

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