Deterministic sandbox fixture only; no provider call or payment. Deterministic Sandbox interpreter for a single item-id public offer snapshot; metadata is machine-readable while production and real-value activation remain disabled.
| Name | Required | Description | Default |
|---|---|---|---|
| request | Yes |
Changes observed during successful MCP inspections.
Input schema / $schemaAdded value: +"http://json-schema.org/draft-07/schema#"Input schema / additionalPropertiesAdded value: +falseInput schema / properties / request / additionalPropertiesPrevious value: -trueNew value: +{}Input schema / properties / request / titleRemoved value: -"Request"Input schema / titleRemoved value: -"invokeArguments"Output schema / (root)Previous value: -{
- "additionalProperties": true,
- "title": "invokeDictOutput",
- "type": "object"
-}New value: +nullDoes the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, non-destructive, and closed-world, so the safety profile is covered. The description goes beyond them by disclosing that this is a deterministic fixture with no provider call, no payment, and disabled production/real-value activation, which is genuine behavioral context an agent needs.
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 tight sentences with no filler, and the most important fact (sandbox-only, no real call) is front-loaded. The second sentence is dense with internal jargon but still efficient.
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?
There is no output schema and the sole nested parameter is completely undocumented, so the description must carry more weight. It conveys the fixture nature and a hint of the item-id input, but leaves the request payload shape and the returned 'machine-readable metadata' unspecified.
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 0% and the single 'request' parameter is a free-form nested object with additionalProperties {}, so the schema explains nothing. The description partially compensates by indicating the request concerns 'a single item-id', but it gives no structure, field names, or format for that request.
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 states the resource (a single item-id public offer snapshot) and the sandbox nature, but the operative verb is 'interpreter', which is jargon rather than a concrete action. It also does not distinguish this tool from its near-twin sibling discover_product_public_offer_snapshot_v0, leaving the invoke-vs-discover split unexplained.
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?
No explicit when-to-use, when-not-to-use, or alternative is given. The 'sandbox fixture only; no provider call or payment' phrasing implies a testing-only context, but the agent receives no guidance on when to pick this over the discover_ or prepare_ siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
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