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

The description discloses that the operation changes the workspace, and provides idempotency instructions and permission requirements on top of annotations. No contradiction with annotations; idempotentHint false is not contradicted since the instruction is conditional on using the key.

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 description is compact, with each phrase providing distinct information: purpose, effect, retry guidance, permission, and API reference. No unnecessary words.

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 complex tool with nested request body and personalization details, the description is minimal but relies heavily on schema and API reference. It does not mention the structure of the body or guidance on constructing sequences, but the schema includes examples and descriptions, so completeness is moderate.

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% and description does not add new parameter semantics beyond what the schema already provides; it only reinforces the idempotency_key usage.

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 clearly states 'Creates a sequence in the authenticated workspace' with a specific verb and resource, distinguishing it from siblings like sequences_get or sequences_update.

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 provides guidance on retrying with the same idempotency_key and mentions required permission, but does not explicitly contrast with alternatives like sequences_preflight or sequences_update, so usage context is clear but not exhaustive.

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