The marketplace for AI agents: search, compare and buy real products from real stores.
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Start a purchase. v0 returns the merchant's checkout link for the chosen variant plus a Kaupia checkout_id. Keep the checkout_id and call report_outcome later so the order is covered and ranked.
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
claude mcp add --transport http kaupia https://api.kaupia.com/mcp
Start a purchase. v0 returns the merchant's checkout link for the chosen variant plus a Kaupia checkout_id. Keep the checkout_id and call report_outcome later so the order is covered and ranked.
| Argument | Type | Description |
|---|---|---|
| agent | string | |
| quantity | integer | |
| product_id* | string | |
| variant_id* | string |
{
"type": "object",
"title": "create_checkoutArguments",
"required": [
"product_id",
"variant_id"
],
"properties": {
"agent": {
"type": "string",
"title": "Agent",
"default": "unknown"
},
"quantity": {
"type": "integer",
"title": "Quantity",
"default": 1
},
"product_id": {
"type": "string",
"title": "Product Id"
},
"variant_id": {
"type": "string",
"title": "Variant Id"
}
}
}Live details for one product: variants, price, stock status, checkout links.
| Argument | Type | Description |
|---|---|---|
| agent | string | |
| country | string | |
| product_id* | string |
{
"type": "object",
"title": "get_productArguments",
"required": [
"product_id"
],
"properties": {
"agent": {
"type": "string",
"title": "Agent",
"default": "unknown"
},
"country": {
"type": "string",
"title": "Country",
"default": "US"
},
"product_id": {
"type": "string",
"title": "Product Id"
}
}
}Report what happened to a checkout: placed | delivered | wrong_item | late | refunded | failed.
| Argument | Type | Description |
|---|---|---|
| note | string | |
| outcome* | string | |
| checkout_id* | string |
{
"type": "object",
"title": "report_outcomeArguments",
"required": [
"checkout_id",
"outcome"
],
"properties": {
"note": {
"type": "string",
"title": "Note",
"default": ""
},
"outcome": {
"type": "string",
"title": "Outcome"
},
"checkout_id": {
"type": "string",
"title": "Checkout Id"
}
}
}Search products for a buyer intent. Returns ranked candidates with price, availability and product_id. Call get_product(product_id) before quoting a specific variant. Prices in major units (USD).
| Argument | Type | Description |
|---|---|---|
| agent | string | |
| limit | integer | |
| query* | string | |
| country | string | |
| max_price_usd | any |
{
"type": "object",
"title": "search_productsArguments",
"required": [
"query"
],
"properties": {
"agent": {
"type": "string",
"title": "Agent",
"default": "unknown"
},
"limit": {
"type": "integer",
"title": "Limit",
"default": 8
},
"query": {
"type": "string",
"title": "Query"
},
"country": {
"type": "string",
"title": "Country",
"default": "US"
},
"max_price_usd": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Max Price Usd",
"default": null
}
}
}Per-shop outcome stats collected through Kaupia (delivered vs problems).
No arguments.
{
"type": "object",
"title": "shop_scorecardArguments",
"properties": {}
}We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Oct 31, 2026.
No readOnlyHint / destructiveHint annotations, so clients can't tell a read from a write without asking.
Fix: Add annotations to each tool, e.g. { readOnlyHint: true } for tools that only read.