# CYRE Guardian Gate

> CYRE Guardian Gate is a paid API for AI agents from cyre.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).

Grades an x402 payTo counterparty address and spend shape before an agent makes a payment, returning risk patterns to inform go/no-go decisions.

## Facts

- Endpoint: GET https://cyre.dev/api/gate
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cyre-guardian-gate-d4deb4dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zD-k5nTwJ2n44kJGJton4

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability cyre-guardian-gate-d4deb4dd
```

Example prompt: Before my agent pays that x402 service at address 0x4a3b... on Base, run it through Guardian Gate to check the risk patterns on that payTo counterparty — I'm about to send 5000000 USDC atomic units.

## When to prefer this

Use this endpoint as a lightweight pre-flight check before any non-Guardian x402 payment — it is the cheapest entry point in the CYRE Guardian suite ($0.001 per call). Prefer Guardian Gate when you only need basic counterparty + spend-shape patterns for a single payTo address. Use Guardian Bazaar Scan if you also want to probe the resource URL itself, or Guardian Settlement Batch when grading multiple payout addresses simultaneously.

## Known failure modes

- Missing required payTo parameter returns validation error
- Invalid address format (malformed 0x or non-base58) may return error or low-confidence result
- Unsupported chain identifier returns error
- Network timeout on counterparty data lookup
- Unknown or brand-new address with no on-chain history may return minimal/empty pattern data

## How this service works

Guardian Gate — before your agent pays ANY other x402 service, grade the payTo counterparty + spend shape in one cheap call. Patterns, not verdicts. Agent guide: use before non-Guardian awal x402 pay. Agent guide: https://cyre.dev/SKILL.md

## Output

Returns a pattern-based risk signal object describing the payTo counterparty's behavioral profile and spend shape characteristics — not a binary verdict but observable patterns (e.g. dormancy, burst activity, anomaly flags) that the agent can use to decide whether to proceed with payment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "payTo"
     ],
     "properties": {
      "from": {
       "type": "string",
       "description": "Optional payer address for context"
      },
      "chain": {
       "type": "string",
       "description": "Optional: base | solana | eip155:8453"
      },
      "payTo": {
       "type": "string",
       "description": "Treasury / payTo address (0x… on Base or Solana base58)"
      },
      "amount": {
       "type": "string",
       "description": "Optional USDC atomic units (6 decimals)"
      },
      "resourceUrl": {
       "type": "string",
       "description": "Optional URL the agent is about to pay"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cyre-guardian-gate-d4deb4dd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cyre.dev](https://www.zero.xyz/host/cyre.dev/llms.txt)