Validate a portfolio and return the existing REST/MPP purchase handoff. This MCP tool never fakes or bypasses payment; an MPP-capable HTTP client must complete the Stripe challenge at the paid endpoint.
| Name | Required | Description | Default |
|---|---|---|---|
| payload | Yes |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the transparency burden and does well by explicitly stating the tool never fakes or bypasses payment and that an external Stripe challenge must be completed. This clarifies critical behavioral limits, though it omits details like return format or exact side effects.
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 two sentences long, front-loaded with the core action, and avoids redundancy. Every word serves a purpose, making it highly concise and well-structured.
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 (nested payload, no output schema), the description covers the high-level purpose and key safety constraint but lacks detail on payload requirements and return value shape. This is a minimum-viable description with clear gaps.
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% and the payload is an unconstrained object. The description only mentions 'portfolio' as a hint, but fails to specify required fields, structure, or examples, leaving the agent without enough information to construct a valid payload.
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?
Description uses specific verb 'Validate' and resource 'portfolio', and states it returns a 'REST/MPP purchase handoff,' which gives a concrete outcome. However, it doesn't explicitly differentiate from sibling tools like validate_promotion_allocation_request, leaving some ambiguity about scope.
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 includes a caveat about never faking payment and requiring an MPP-capable HTTP client, but provides no guidance on when to use this tool vs alternatives like get_promotion_allocation_offer or validate_promotion_allocation_request. No use-case context or exclusions are given.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
Each tool targets a distinct aspect: offer details, schema, validation, and purchase. No overlap or ambiguity between the four tools.
All tools follow a consistent verb_promotion_allocation_<suffix> pattern (get, get, purchase, validate). Naming is uniform and predictable.
Four tools is well-scoped for this specialized promotion allocation workflow. Each tool covers a necessary step without redundancy.
The core lifecycle is covered: discover offer, understand schema, validate request, and initiate purchase. A minor gap is the lack of a post-payment status check, but it is not essential for the stated purpose.