# Tollex USDG Domain Tool

> Tollex USDG Domain Tool 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).

Enables software agents to invoke a capability under a USDG-denominated policy on Robinhood Chain, with policy enforcement, payment via x402, and a signed receipt returned.

## Facts

- Endpoint: POST https://api.tollex.org/tools/usdg_domain?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-usdg-domain-tool-42d018c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_abNt5QBQlsSF1zjNkdqwX

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-usdg-domain-tool-42d018c9 -d '<json body>'
```

Example prompt: Use Tollex to invoke a tool capability with a POST request in JSON format, paying with USDG on Robinhood Chain under my spending policy, and return the signed receipt.

## When to prefer this

Choose this endpoint when your AI agent needs to autonomously purchase a tool or API capability using USDG on Robinhood Chain (not USDC on Base), with policy enforcement before any payment is committed, and requires a signed receipt for auditability. Prefer this over direct API calls when you need a spending control layer between your agent and the tool marketplace.

## Known failure modes

- Policy violation: spending rules block the transaction before payment is made
- Payment failure: USDG transfer on Robinhood Chain fails or is rejected
- Uncertain payment not reconcilable: transaction state cannot be confirmed
- Invalid body type or method: request does not match required enum values (POST/PUT/PATCH; json/form-data/text)
- Missing required input fields: 'type', 'method', 'bodyType', or 'body' absent causes schema validation error
- Network or endpoint unreachable: api.tollex.org unavailable

## 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 signed receipt confirming that the payment was policy-checked, executed in USDG on Robinhood Chain via x402, and that any uncertain payment has been reconciled — along with confirmation of the tool invocation outcome.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [],
     "properties": {},
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "tool",
      "result",
      "evidence"
     ],
     "properties": {
      "tool": {
       "type": "object",
       "properties": {
        "id": {
         "type": "string"
        },
        "version": {
         "type": "string"
        },
        "provider": {
         "type": "string"
        }
       }
      },
      "result": {
       "type": "object",
       "example": {
        "domain": {
         "name": "Global Dollar",
         "chainId": 4663,
         "version": "1",
         "verifyingContract": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168"
        },
        "matches": true,
        "reconstructed": "0x7a3d7400b27830f4f91c2c16a082486d67c1befecaec2f53b33f1f35d5b62036",
        "onchainDomainSeparator": "0x7a3d7400b27830f4f91c2c16a082486d67c1befecaec2f53b33f1f35d5b62036"
       },
       "required": [
        "domain",
        "onchainDomainSeparator",
        "reconstructed",
        "matches"
       ],
       "properties": {
        "domain": {
         "type": "object",
         "description": "name, version, chainId, verifyingContract"
        },
        "matches": {
         "type": "boolean"
        },
        "reconstructed": {
         "type": "string"
        },
        "onchainDomainSeparator": {
         "type": "string"
        }
       }
      },
      "evidence": {
       "type": "array",
       "items": {
        "type": "object"
       },
       "description": "Chain or source evidence bound into the signed receipt"
      },
      "untrustedOutput": {
       "type": "boolean"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tool": {
   "id": "usdg_domain",
   "version": "1.0.0",
   "provider": "tollex.robinhood-chain"
  },
  "result": {
   "domain": {
    "name": "Global Dollar",
    "chainId": 4663,
    "version": "1",
    "verifyingContract": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168"
   },
   "matches": true,
   "reconstructed": "0x7a3d7400b27830f4f91c2c16a082486d67c1befecaec2f53b33f1f35d5b62036",
   "onchainDomainSeparator": "0x7a3d7400b27830f4f91c2c16a082486d67c1befecaec2f53b33f1f35d5b62036"
  },
  "evidence": [],
  "untrustedOutput": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tollex-usdg-domain-tool-42d018c9/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)