AcuiQ

Create checkout session

create_checkout

Create a Stripe Checkout session for an AcuiQ product and return its URL. Give the URL to the human to open and complete – the agent never touches payment data. Creates a live session on Stripe: call it when the person has said they want to buy, not to look up a price.

Input Schema

Name	Required	Description
`source`	No	Optional: the acuiq.com page the purchase follows from, as a path or URL – the symptom or point page whose `guide` pointer you are acting on. Attributes the sale to that page. Never personal data.
`product`	Yes	Product to purchase. press-needles ($19.99/box, ships US); treatment-guide ($12.99 digital download, free updates for life); practitioner-edition ($39 digital download, free updates for life); point-reference ($29 digital download, free updates for life); atlas-charts ($14 digital download, free updates for life); corpus-licence ($999 digital download, free updates for life); mini-headache ($5 digital download, free updates for life); mini-back ($5 digital download, free updates for life); mini-neck-joints ($5 digital download, free updates for life); mini-sleep-mood ($5 digital download, free updates for life); mini-digestion ($5 digital download, free updates for life); mini-ear-eye ($5 digital download, free updates for life); mini-skin-nerves ($5 digital download, free updates for life); mini-womens ($5 digital download, free updates for life); mini-heart ($5 digital download, free updates for life); mini-urinary ($5 digital download, free updates for life)
`quantity`	No	Number of boxes (physical products only, default 1, max 20)

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 20, 2026

changedInput schema / properties / quantity / description

Previous value: -"Number of boxes (physical products only, default 1)"New value: +"Number of boxes (physical products only, default 1, max 20)"

addedInput schema / properties / quantity / maximum
```
Added value: +20
```
addedInput schema / properties / quantity / minimum
```
Added value: +1
```

addedInput schema / properties / source

Added value: +{
+  "description": "Optional: the acuiq.com page the purchase follows from, as a path or URL – the symptom or point page whose `guide` pointer you are acting on. Attributes the sale to that page. Never personal data.",
+  "type": "string"
+}

Changed2 schema fields changedSep 3, 2026

changedInput schema / properties / product / description

Previous value: -"Product to purchase. press-needles ($19.99/box, ships US); treatment-guide ($12.99 digital download, free updates for life); practitioner-edition ($39 digital download, free updates for life); point-reference ($29 digital download, free updates for life); atlas-charts ($14 digital download, free updates for life); corpus-licence ($999 digital download, free updates for life); mini-headache ($5 digital download, free updates for life); mini-back-neck ($5 digital download, free updates for life); mini-sleep-mood ($5 digital download, free updates for life); mini-digestion ($5 digital download, free updates for life); mini-ear-eye ($5 digital download, free updates for life); mini-skin-nerves ($5 digital download, free updates for life)"New value: +"Product to purchase. press-needles ($19.99/box, ships US); treatment-guide ($12.99 digital download, free updates for life); practitioner-edition ($39 digital download, free updates for life); point-reference ($29 digital download, free updates for life); atlas-charts ($14 digital download, free updates for life); corpus-licence ($999 digital download, free updates for life); mini-headache ($5 digital download, free updates for life); mini-back ($5 digital download, free updates for life); mini-neck-joints ($5 digital download, free updates for life); mini-sleep-mood ($5 digital download, free updates for life); mini-digestion ($5 digital download, free updates for life); mini-ear-eye ($5 digital download, free updates for life); mini-skin-nerves ($5 digital download, free updates for life); mini-womens ($5 digital download, free updates for life); mini-heart ($5 digital download, free updates for life); mini-urinary ($5 digital download, free updates for life)"

changedInput schema / properties / product / enum

Previous value: -[
-  "press-needles",
-  "treatment-guide",
-  "practitioner-edition",
-  "point-reference",
-  "atlas-charts",
-  "corpus-licence",
-  "mini-headache",
-  "mini-back-neck",
-  "mini-sleep-mood",
-  "mini-digestion",
-  "mini-ear-eye",
-  "mini-skin-nerves"
-]New value: +[
+  "press-needles",
+  "treatment-guide",
+  "practitioner-edition",
+  "point-reference",
+  "atlas-charts",
+  "corpus-licence",
+  "mini-headache",
+  "mini-back",
+  "mini-neck-joints",
+  "mini-sleep-mood",
+  "mini-digestion",
+  "mini-ear-eye",
+  "mini-skin-nerves",
+  "mini-womens",
+  "mini-heart",
+  "mini-urinary"
+]

Changed1 schema field changedSep 2, 2026

changedInput schema / properties / product / description

Previous value: -"Product to purchase. press-needles ($19.99/box, ships US); treatment-guide ($12.99 digital download, free updates for life); practitioner-edition ($39 digital download, free updates for life); point-reference ($29 digital download, free updates for life); atlas-charts ($14 digital download, free updates for life); corpus-licence ($199 digital download, free updates for life); mini-headache ($5 digital download, free updates for life); mini-back-neck ($5 digital download, free updates for life); mini-sleep-mood ($5 digital download, free updates for life); mini-digestion ($5 digital download, free updates for life); mini-ear-eye ($5 digital download, free updates for life); mini-skin-nerves ($5 digital download, free updates for life)"New value: +"Product to purchase. press-needles ($19.99/box, ships US); treatment-guide ($12.99 digital download, free updates for life); practitioner-edition ($39 digital download, free updates for life); point-reference ($29 digital download, free updates for life); atlas-charts ($14 digital download, free updates for life); corpus-licence ($999 digital download, free updates for life); mini-headache ($5 digital download, free updates for life); mini-back-neck ($5 digital download, free updates for life); mini-sleep-mood ($5 digital download, free updates for life); mini-digestion ($5 digital download, free updates for life); mini-ear-eye ($5 digital download, free updates for life); mini-skin-nerves ($5 digital download, free updates for life)"

Changed3 schema fields changedSep 1, 2026

changedInput schema / properties / product / description

Previous value: -"Product to purchase: press-needles ($19.99/box) or treatment-guide ($12.99 digital download)"New value: +"Product to purchase. press-needles ($19.99/box, ships US); treatment-guide ($12.99 digital download, free updates for life); practitioner-edition ($39 digital download, free updates for life); point-reference ($29 digital download, free updates for life); atlas-charts ($14 digital download, free updates for life); corpus-licence ($199 digital download, free updates for life); mini-headache ($5 digital download, free updates for life); mini-back-neck ($5 digital download, free updates for life); mini-sleep-mood ($5 digital download, free updates for life); mini-digestion ($5 digital download, free updates for life); mini-ear-eye ($5 digital download, free updates for life); mini-skin-nerves ($5 digital download, free updates for life)"

changedInput schema / properties / product / enum

Previous value: -[
-  "press-needles",
-  "treatment-guide"
-]New value: +[
+  "press-needles",
+  "treatment-guide",
+  "practitioner-edition",
+  "point-reference",
+  "atlas-charts",
+  "corpus-licence",
+  "mini-headache",
+  "mini-back-neck",
+  "mini-sleep-mood",
+  "mini-digestion",
+  "mini-ear-eye",
+  "mini-skin-nerves"
+]

changedInput schema / properties / quantity / description

Previous value: -"Number of boxes (press-needles only, default 1)"New value: +"Number of boxes (physical products only, default 1)"

First observedAug 17, 2026

TDQS

A4.2/5.0

Behavior4/5

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

Annotations declare the write/irreversible profile (readOnlyHint=false, idempotentHint=false, openWorldHint=true); the description adds real context beyond them: this hits live Stripe, the session is handed to a human, and the agent never handles payment data. It doesn't say what happens on repeat calls or session expiry, which is the one remaining behavioral gap.

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

Conciseness5/5

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

Three short sentences, front-loaded with the action and return value, with the human-in-the-loop constraint and the usage condition each stated once. No filler.

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?

For a 3-parameter mutation tool with no output schema, the description covers action, return value, side-effect scope and usage condition, and annotations carry the safety profile. Remaining gaps are minor: session lifetime, repeat-call behavior, and error cases.

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

Parameters3/5

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

Schema description coverage is 100% – product, source and quantity are all fully documented in the schema, including prices and the 1–20 box cap. The description adds no format or semantic detail beyond the schema, so the baseline 3 for full schema coverage applies.

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

Purpose5/5

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

States a specific verb and resource ('Create a Stripe Checkout session for an AcuiQ product') plus the return value (its URL). It also implicitly separates itself from the read-only siblings by noting this is not a price lookup, so an agent can choose without opening a schema.

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?

Gives an explicit trigger ('when the person has said they want to buy') and an explicit non-trigger ('not to look up a price'), which is stronger than most mutating tools. It stops short of naming the sibling that handles price/product lookup (e.g. a wiki or product page tool), so the routing is implied rather than complete.

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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