# 21.cash Payment Link - Aura Rewards

> 21.cash Payment Link - Aura Rewards is a paid API for AI agents from 21.cash, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Retrieves a payment link for a specific 21.cash address, directing 50% of proceeds to Aura Rewards

## Facts

- Endpoint: GET https://21.cash/api/links/0x8c913b70Db8FAcDAdc37BC2530559DBE879b95b5
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/21-cash-payment-link-aura-rewards-938f49d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZleTx9GF1xo_YCqQjvKbO

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 21-cash-payment-link-aura-rewards-938f49d3
```

Example prompt: Can you fetch the 21.cash payment link for wallet address 0x8c913b70Db8FAcDAdc37BC2530559DBE879b95b5 so I can see the payment details and the Aura Rewards split?

## When to prefer this

Use this endpoint when you need to retrieve an existing 21.cash payment link associated with a specific Ethereum wallet address, particularly one configured with Aura Rewards splits. Best suited for agents operating in x402 micropayment ecosystems needing to resolve payment link metadata for a known address.

## Known failure modes

- Invalid or unknown wallet address returns empty or error response
- Payment link not found for given address
- Rate limiting or payment gateway failure after $0.1 USDC toll
- Network timeout reaching 21.cash API
- Empty response schema means unpredictable output structure

## How this service works

50% to Aura Rewards

## Output

Returns payment link details for the specified wallet address on 21.cash, including the payment configuration where 50% of proceeds go to Aura Rewards. Response schema is minimal/undocumented.

## Example request

```json
{
 "address": "0x8c913b70Db8FAcDAdc37BC2530559DBE879b95b5"
}
```

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "content": {
       "type": "object",
       "properties": {
        "name": {
         "type": "string"
        },
        "amount": {
         "type": "string"
        },
        "chainId": {
         "type": "number"
        },
        "chainName": {
         "type": "string"
        },
        "description": {
         "type": "string"
        },
        "gatedContent": {},
        "routerAddress": {
         "type": "string"
        }
       }
      },
      "message": {
       "type": "string"
      },
      "receipt": {
       "type": "object",
       "properties": {
        "network": {
         "type": "string"
        },
        "transactionHash": {
         "type": "string"
        }
       }
      },
      "success": {
       "type": "boolean"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/21-cash-payment-link-aura-rewards-938f49d3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 21.cash](https://www.zero.xyz/host/21.cash/llms.txt)