# detect_checkout

Scan the active browser tab for a payment form. Returns which fields were found (card number, CVV, expiry, name). Requires the AgentPay Chrome extension.

Agent View of the PolicyLayer registry record for `detect_checkout`. HTML page: https://policylayer.com/tools/agentpay/detect-checkout

## Facts

- Tool: `detect_checkout`
- Server: Agentpay (`agentpay-mcp-server`) — https://policylayer.com/tools/agentpay.md
- Install: `npx -y agentpay-mcp-server`
- Homepage: git+https://github.com/sagebhardt/agentpay.git
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "detect_checkout",
    "arguments": {}
  }
}
```

## Why detect_checkout is rated Low

This tool retrieves and queries data (detecting form field presence) without side effects or irreversible actions. While it operates in a payment context, it performs passive observation only—scanning a webpage for field information. It does not execute transactions, modify payment systems, or destroy data.

From the tool's own definition: "Tool 'detect_checkout' scans and returns information about payment form fields present on the active browser tab. The description explicitly states it 'Returns which fields were found' with no mention of modifying, executing actions on, or deleting data."

## Use case

AI agents call detect_checkout to retrieve information from Agentpay without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Agentpay:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "detect_checkout": {}
  }
}
```

## Other tools on Agentpay (16)

- `close_card` — Destructive — https://policylayer.com/tools/agentpay/close-card.md
- `revoke_api_key` — Destructive — https://policylayer.com/tools/agentpay/revoke-api-key.md
- `fill_card` — Execute — https://policylayer.com/tools/agentpay/fill-card.md
- `create_card` — Financial — https://policylayer.com/tools/agentpay/create-card.md
- `pay_checkout` — Financial — https://policylayer.com/tools/agentpay/pay-checkout.md
- `pay_merchant_clp` — Financial — https://policylayer.com/tools/agentpay/pay-merchant-clp.md
- `pay_person_clp` — Financial — https://policylayer.com/tools/agentpay/pay-person-clp.md
- `check_account` — Read — https://policylayer.com/tools/agentpay/check-account.md
- `check_balance` — Read — https://policylayer.com/tools/agentpay/check-balance.md
- `get_card_details` — Read — https://policylayer.com/tools/agentpay/get-card-details.md
- `list_api_keys` — Read — https://policylayer.com/tools/agentpay/list-api-keys.md
- `list_recipients` — Read — https://policylayer.com/tools/agentpay/list-recipients.md
- `list_transactions` — Read — https://policylayer.com/tools/agentpay/list-transactions.md
- `agentpay_signup` — Write — https://policylayer.com/tools/agentpay/agentpay-signup.md
- `create_api_key` — Write — https://policylayer.com/tools/agentpay/create-api-key.md
- `save_recipient` — Write — https://policylayer.com/tools/agentpay/save-recipient.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=agentpay · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/agentpay