fc analytics member activity

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

The annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is covered. The description adds genuine non-annotation context: the response is gap-filled (missing intervals are filled), it requires specific report permissions, and it is scoped to signups rather than being an audience export. It does not, however, describe pagination or return shape.

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 purpose sentence is well front-loaded, and the permissions note earns its place. The embedded 'Controller: MembersReportsController@activity' and 'Route source: fluent-community-pro/app/Http/Routes/api.php:81' are implementation metadata that do little to help an agent select or invoke the tool, diluting an otherwise compact definition.

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 read-only analytics tool with no output schema, the description conveys what is returned (a gap-filled signup time series) and the authorization requirement. The lone parameter is fully documented in the schema. It is largely complete, missing only expected response granularity or how the gap-filling behaves.

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 100% on the single 'account' parameter, so the schema already explains that it is an exact configured profile label, not a tenant/provider ID. The description adds nothing about the parameter, which is acceptable at full coverage but earns no extra credit.

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: 'Returns a gap-filled time series of member signups.' This clearly distinguishes it from sibling analytics tools, and the closing caveat 'not a whole-site audience export' further scopes the output. It stops short of naming the adjacent analytics siblings (fc_analytics_overview, fc_analytics_top_members) for explicit differentiation.

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 usage through two hints: it requires FluentCommunity Pro native report permissions and it is not a whole-site audience export, which rules out some misuses. However, it never says when to choose this over the other fc_analytics_* tools or states prerequisites in a when-to-use form, leaving selection largely to inference.

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