Post Instances Customers Bank Accounts Plaid

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

Annotations already declare readOnlyHint=false, openWorldHint=true, idempotentHint=false, destructiveHint=false, so the safety profile is covered. The description adds nothing beyond that: it doesn't say what is returned (a link token or hosted URL), that it is a non-idempotent external-dependency call, or what happens once the customer completes the flow.

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?

Three words is not conciseness but under-specification; there is nothing to front-load and no information beyond the title is conveyed.

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 write operation with an open-world external dependency, a nested request body and no output schema, the agent needs at minimum what gets created and what the response carries (link token/URL). None of that is present, leaving a significant gap.

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 only 33%: customer_id has a description, instance_id does not, and the nested requestBody.redirect_url is documented only in the schema. The description supplies no parameter meaning at all, so it fails to 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?

The description names a verb and a resource ("Create Plaid Link"), but "Plaid Link" is a product term that doesn't state the outcome, namely initiating a Plaid bank-account connection for a customer. It is distinguishable from siblings like GetV1InstancesCustomersBankAccounts only by inference from the tool name, not the description.

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?

There is no when-to-use guidance, no prerequisites (e.g. customer must exist or onboarding must be complete), and no reference to the sibling PostV1InstancesCustomersBankAccounts alternative for non-Plaid flows.

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