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

The description claims idempotency ('idempotently setting up') but the annotation idempotentHint is false, creating a direct contradiction. Annotations carry no other behavioral cues, so the description must compensate, but it fails to resolve the inconsistency and omits side effects or auth requirements beyond 'Authenticated'.

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 a single sentence with no filler, efficiently stating the core action and return value. However, the word 'idempotently' is critical but could be clarified.

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?

Given the tool's complexity (16 parameters, no output schema, multiple annotations missing), the description is far too sparse. It lacks details on idempotency behavior, parameter roles, error conditions, or response structure, leaving significant gaps for correct invocation.

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 0% with no property descriptions. The description does not mention any parameters or their meanings, leaving the agent with no guidance on the 16 parameters. Despite the low coverage, the description provides no compensation.

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 the action (setting up vendor source and destination) and the return value (ingest URL on creation), with specific verb-resource pairing. It differentiates from siblings like create_source or create_destination by combining both in one call, but does not explicitly contrast them.

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 for setting up both source and destination together, but does not state when to use versus alternatives (e.g., create_source, create_destination) or provide any when-not guidance.

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