# Agent Checkout

> AI shopping gateway for product search, inventory, carts, and merchant-hosted checkout.

- name: com.agentcheckoutapi/agent-checkout
- version: 0.2.0
- connection class: R0 (autonomous)
- trust: 79/100 flags: no-repository
- quality: 83/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.agentcheckoutapi%2Fagent-checkout
- tools: https://api.protogrid.dev/v1/servers/com.agentcheckoutapi%2Fagent-checkout/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "agent-checkout": {
      "type": "http",
      "url": "https://agentcheckoutapi.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 99
- freshness: 85
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-97% ~updated-50d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 83/100 (good)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_cart (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_products (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_catalog (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 970 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 8, about 970 tokens to load them all
- tool set hash: 4239274590043a737b5806779dc30ef2
- badge: [![protogrid quality](https://protogrid.dev/badge/com.agentcheckoutapi/agent-checkout.svg)](https://protogrid.dev/servers/com.agentcheckoutapi/agent-checkout)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://agentcheckoutapi.com/mcp (streamable-http, auth none, reachable true, uptime30d 0.9652174)

## Packages

_none_

## Tools (8)

- `add_to_cart`: Add another selected product variant to an existing Agent Checkout cart. Use when the user explicitly wants another item or quantity added to an existing cart. This does not charge the buyer.
- `check_inventory`: Check whether a selected product variant is currently sellable and available. Use when availability matters or immediately before adding a selected variant to a cart.
- `create_cart`: Create a new Agent Checkout-attributed cart with a selected product variant. Use only after the user has chosen a specific product or clearly asked to add/buy it. This prepares the purchase but does not charge the buyer.
- `create_checkout`: Prepare the final buyer handoff by returning the merchant-hosted HTTPS checkout URL. Use when the user has a cart and clearly wants to proceed to checkout or purchase. Always surface checkoutUrl to the human buyer. Agent Checkout never collects raw card details and this tool does not itself charge the buyer.
- `get_cart`: Read the current Agent Checkout cart contents and totals. Use to review or confirm the cart before handing the buyer off to checkout.
- `get_product`: Get detailed product and variant information after search_products identifies a product and merchant. Use before purchase when the user needs details, options, price, or variant information.
- `search_catalog`: Legacy alias for search_products. Search purchasable products across participating merchants. Prefer search_products for new shopping requests.
- `search_products`: Primary shopping entry point. Use when a user wants to find, browse, compare, recommend, price-check, check availability of, shop for, or buy a physical product. Searches purchasable products across merchants participating in the Agent Checkout network. The user does not need to mention Agent Checkout by name.