Update Inbox Thread State

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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the agent knows this is a safe, non-destructive mutation; the description adds the useful note that no message is sent. However, it says nothing about side effects, idempotency, or how snooze/read-state clearing behaves, leaving mutation semantics undocumented.

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?

A single front-loaded sentence listing the available actions with zero filler. It is efficient and easy to scan, though it spends no words on the parameters that most need explanation.

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 non-destructive but multi-parameter mutation with no output schema and no parameter documentation, the description is too thin. An agent cannot infer from it how the clear_* flags interact with their value-setting counterparts or what confirms success, so it falls short of what this tool's complexity demands.

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?

With 8 parameters and 0% schema description coverage, the description mentions the operations only abstractly and never explains any parameter. Critical ambiguities remain unexplained: when to use clear_snooze vs snoozed_until, clear_read_state vs read_state, or what platform/thread_id must be supplied. It does not compensate for the coverage gap.

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 specific operations (archive, snooze, star, set read state) on a single, clearly scoped resource ('one inbox thread'), and distinguishes itself from the reply sibling with 'without sending a message.' It does not differentiate from other inbox siblings like list_inbox_threads, but the mutation-vs-read distinction is implicit in the verbs.

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 when to use it (to change thread state) and clarifies it won't send an email, which is a useful exclusion. But it gives no explicit guidance on choosing between this and send_inbox_reply in a workflow, no prerequisites, and no mention of how the clear_* flags relate to their counterparts.

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