# Tollex Agent Check — Economic Control Plane Status & Payment Rail Probe

> Tollex Agent Check — Economic Control Plane Status & Payment Rail Probe is a paid API for AI agents from api.tollex.org, paid per call via x402, $0.0079/call, status unknown (last checked 2026-10-11).

Returns the current status of Tollex's payment rails, accepted stablecoins, and latest block numbers so an agent can verify readiness before initiating an x402 API purchase.

## Facts

- Endpoint: GET https://api.tollex.org/v1/agent-check?utm_source=zero.xyz
- Price: $0.0079/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tollex-agent-check-economic-control-plane-status-payment-rail-probe-32695e27
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MPA7hvaMkv3hiYvVzvfiL

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 tollex-agent-check-economic-control-plane-status-payment-rail-probe-32695e27
```

Example prompt: Before I let you go spend on my behalf, check that Tollex's payment rails are live and tell me which stablecoins and networks it's currently accepting new payments on.

## When to prefer this

Use this endpoint as a pre-flight check before any Tollex-mediated API purchase: it tells you which stablecoins and chains are live without committing funds. Prefer it over querying blockchain RPCs directly when you need a single authoritative view of Tollex's accepted rails and real-time service health in one call.

## Known failure modes

- Service outage returns non-ok status or network error
- Rail acceptingNewPayments set to false if chain is congested or paused
- Block number may be stale if a chain RPC is degraded
- Malformed properties query parameter may return 400 or empty response
- USDC payment of $0.0078 may fail if agent wallet has insufficient balance

## How this service works

Tollex lets software agents buy APIs and tools under rules you set: it finds a capability that fits, checks your policy before anything is signed, pays with x402 in USDC on Base or USDG on Robinhood Chain, reconciles uncertain payments and returns a signed receipt.

## Output

A JSON object containing: an array of active payment rails (each with id, stablecoin symbol, network chain ID, and acceptingNewPayments flag), a map of chain IDs to their latest block numbers, an overall status string ('ok'), the service name, and a paidWith object showing which asset address, amount in base units, and network were used for this very call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "rails": [
   {
    "id": "base-usdc",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "symbol": "USDC",
    "network": "eip155:8453",
    "acceptingNewPayments": true
   },
   {
    "id": "robinhood-usdg",
    "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
    "symbol": "USDG",
    "network": "eip155:4663",
    "acceptingNewPayments": true
   }
  ],
  "chains": {
   "eip155:4663": {
    "blockNumber": "83335219"
   },
   "eip155:8453": {
    "blockNumber": "36512000"
   }
  },
  "status": "ok",
  "verify": {
   "receipt": "PAYMENT-RESPONSE header: extensions['tollex-receipt'].info",
   "operation": "https://api.tollex.org/tollex/operations/00000000-0000-4000-8000-000000000001",
   "receiptKeys": "https://api.tollex.org/.well-known/tollex-receipt-keys"
  },
  "service": "Tollex",
  "paidWith": {
   "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
   "amount": "7800",
   "network": "eip155:8453"
  },
  "checkedAt": "2026-10-11T08:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tollex-agent-check-economic-control-plane-status-payment-rail-probe-32695e27/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.tollex.org](https://www.zero.xyz/host/api.tollex.org/llms.txt)