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

With no annotations, the description must carry the behavioral burden; it discloses a trial-first payment flow and a specific cost/header, which is useful. However, it omits whether the dispatch mutates state, what happens on payment failure, auth requirements, and return behavior.

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?

One sentence, no filler, and the trial/payment condition is front-loaded. It is compact, though the compression contributes to ambiguity.

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 3-parameter tool with no annotations, no output schema, and no parameter descriptions, the description is far too sparse. It does not explain inputs, side effects, or outcomes.

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?

All three parameters (args, task_class, requested_tool) have 0% schema description coverage, and the description does not explain any of them. 'Dispatch a call' and 'requested_tool' hint at but do not define the parameters.

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 uses the verb 'Dispatch' and mentions 'certified substitution', but 'a call' is ambiguous and the resource/operation is not clearly defined. It gives no clue how this differs from sibling tools such as formulary_verify_receipt or formulary_account.

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?

It states a sequence ('trial first, then x402 $0.005 via X-PAYMENT'), which implies a payment flow, but never says when to use this tool versus alternatives or what prerequisites apply. There is no explicit when-not guidance.

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