# Nimbus Onchain Data API – Stablecoin Transfer Cost

> Nimbus Onchain Data API – Stablecoin Transfer Cost is a paid API for AI agents from crypto-data-api-zo95.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Returns the estimated USD cost to transfer USDC on the same chain or cross-chain via CCTP between supported EVM networks

## Facts

- Endpoint: GET https://crypto-data-api-zo95.onrender.com/v1/stablecoin/transfer-cost?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nimbus-onchain-data-api-stablecoin-transfer-cost-bbca3bca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dLJgC2P39VCz3Jr9_Ujpj

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 nimbus-onchain-data-api-stablecoin-transfer-cost-bbca3bca
```

Example prompt: How much would it cost in USD to send USDC from Base to Ethereum right now — both as a same-chain transfer on Base and as a cross-chain bridge via CCTP?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call USD cost estimate for USDC transfers — either same-chain or cross-chain via CCTP — across Ethereum, Base, Optimism, and Arbitrum. It is ideal for agents that need to route stablecoin payments optimally or present fee transparency to users before executing transfers. Prefer this over manual gas estimation tools when you need a unified cost figure in USD rather than raw gas units.

## Known failure modes

- Missing required 'from' query parameter returns a validation error
- Unsupported chain value (not ethereum/base/optimism/arbitrum) returns an enum validation error
- Data pipeline freshness check fails if ingested data lag exceeds 300 seconds
- Service may be unavailable without notice as it is hosted on Render's free/hobby tier
- Payment failure or x402 authentication issue prevents access to the endpoint

## How this service works

x402 pay-per-call. Payments are per request in USDC and are final. No refunds on-chain. Service is provided as-is and may change or stop without notice. Informational data only, not financial, investment, legal, or tax advice. Metrics such as net transfer volume estimates and wallet clusters are algorithmic estimates from public blockchain data and may be wrong or delayed. Provided as-is with no warranty. Methodology: https://crypto-data-api-zo95.onrender.com/methodology.

## Output

Returns a JSON object with the estimated USD cost of a same-chain USDC transfer on the source chain, the total estimated USD cost of a cross-chain USDC transfer via CCTP Standard, a list of pipeline data freshness checks (including whether ingested data lag is under 300 seconds), the source chain, a UTC timestamp of when the data was generated, and a disclaimer noting the data is informational only.

## 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",
     "required": [
      "from"
     ],
     "properties": {
      "to": {
       "enum": [
        "ethereum",
        "base",
        "optimism",
        "arbitrum"
       ],
       "type": "string"
      },
      "from": {
       "enum": [
        "ethereum",
        "base",
        "optimism",
        "arbitrum"
       ],
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "checks_run": {
       "type": "array"
      },
      "disclaimer": {
       "type": "string"
      },
      "generated_at_utc": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "checks_run": [
   {
    "id": "pipeline_fresh",
    "ran": true,
    "passed": true,
    "description": "Ingested data lag under 300s"
   }
  ],
  "disclaimer": "Informational data only, ...",
  "source_chain": "base",
  "generated_at_utc": "2026-09-29T19:40:00.000Z",
  "same_chain_usdc_transfer": {
   "cost": {
    "usd": 0.0021
   }
  },
  "cross_chain_usdc_via_cctp_standard": {
   "total_usd_estimate": 0.004
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nimbus-onchain-data-api-stablecoin-transfer-cost-bbca3bca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from crypto-data-api-zo95.onrender.com](https://www.zero.xyz/host/crypto-data-api-zo95.onrender.com/llms.txt)