SendaMeal Storefront

by com.sendameal

Overview Discussions Admin

create_checkout_url

CreateResult a checkout URL for a cart assigned to a current session

Arguments: None, but requires a cart to be present in the current session.

Returns:

checkoutURL - the URL to redirect the user to for checkout
errors - any errors encountered during the process (like, cart not found, etc.)

Flow:

Call 'manage_cart' with 'create_cart' operation to create a new cart.
Call this tool to create a checkout URL for the cart assigned to the current session.

Input Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Output Schema

TableJSON Schema

Name	Required	Description	Default
`message`	No
`success`	Yes
`checkoutURL`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedSep 9, 2026

removedOutput schema / properties / errors

Removed value: -{
-  "items": true,
-  "type": [
-    "null",
-    "array"
-  ]
-}

Changed1 schema field changedSep 9, 2026

addedOutput schema / properties / errors

Added value: +{
+  "items": true,
+  "type": [
+    "null",
+    "array"
+  ]
+}

Changed1 schema field changedSep 9, 2026

removedOutput schema / properties / errors

Removed value: -{
-  "items": true,
-  "type": [
-    "null",
-    "array"
-  ]
-}

First observedAug 17, 2026

TDQS

A3.8/5.0

Behavior3/5

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

The description discloses that the tool requires a cart in the current session and returns errors if the cart is not found. It also explains the expected flow. However, it doesn't disclose side effects (e.g., whether the cart is consumed or invalidated after creating the URL) or any rate limits. With no annotations provided, the description carries the burden, and it partially meets it.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured with clear sections for Arguments, Returns, and Flow. It's concise and front-loads the purpose. The flow section is slightly redundant with the purpose but adds useful sequencing.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has no parameters and a clear output schema, the description covers the essential context: prerequisites, return values, and the recommended flow. It could mention what happens to the cart after checkout URL creation, but overall it's complete enough for an agent to invoke correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has zero parameters, so the description doesn't need to explain parameter semantics. The description correctly notes 'Arguments: None' and explains the implicit dependency on the session cart, which adds context beyond the empty schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: creating a checkout URL for a cart in the current session. It distinguishes itself from sibling cart tools by focusing on the checkout URL generation step, though it doesn't explicitly name a sibling alternative.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides a clear flow: first call manage_cart with create_cart, then call this tool. It also notes the prerequisite that a cart must be present in the current session. It doesn't explicitly state when not to use it, but the flow guidance is strong.

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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