Create a sequence

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

Annotations already declare destructiveHint=true, idempotentHint=false and openWorldHint=true, so the safety profile is known. The description adds useful specifics on the scope of impact ('delivery, audience membership, published data or irreversible state') and restates the confirm gate, though it remains vague about which of those actually occur and under what conditions.

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 sentences with zero filler, and the impact warning plus required flag are front-loaded where the agent will see them first.

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 14-parameter, nested-object creation tool with no output schema, the description is thin. The rich schema and the destructive/open-world annotations cover most of the burden, but there is no guidance on the payload/payload_file/flags interaction or on what a successful creation returns, which the description could have supplied.

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 100%, so the schema already documents all 14 parameters, including the payload-vs-flags mutual exclusion. The description only surfaces confirm, adding no meaning beyond the schema. Baseline 3 applies when the schema does the heavy lifting.

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: 'Create a sequence.' It is unambiguous on its own, but it does nothing to distinguish itself from siblings like create_sequence_email or update_sequence, which an agent must disambiguate.

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 only usage instruction is 'Requires confirm=true.' There is no statement of when to create a sequence versus using an alternative like add_subscriber_to_sequence, and no preconditions beyond the confirmation flag.

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