# santyvv-data Chain Call — Pay-Per-Call On-Chain Data API

> santyvv-data Chain Call — Pay-Per-Call On-Chain Data API is a paid API for AI agents from x402.santyvv.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).

Executes a pay-per-call HTTP POST to retrieve market and on-chain data, paid $0.01 USDC per call via x402 on Base with no API keys or accounts required.

## Facts

- Endpoint: POST https://x402.santyvv.com/api/chain/call?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/santyvv-data-chain-call-pay-per-call-on-chain-data-api-0b6d3f25
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XfMe7Wd-KSJ3JqTMCpIkZ

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 santyvv-data-chain-call-pay-per-call-on-chain-data-api-0b6d3f25 -d '<json body>'
```

Example prompt: Fetch the current on-chain price and market data for ETH — pay per call in USDC, no API key needed, just hit the santyvv x402 endpoint with a JSON body.

## When to prefer this

Choose this endpoint when you need anonymous, keyless access to on-chain or crypto market data and are willing to pay $0.01 USDC per call via x402 on Base. Ideal for AI agents, scripts, or bots that cannot manage API keys or account credentials, and benefit from normalised, multi-source, edge-cached responses without registration friction.

## Known failure modes

- Payment rejected if USDC balance on Base is insufficient
- Malformed body or wrong bodyType enum causes 400 error
- Missing required 'input' object fields returns validation error
- Upstream data provider unavailability may cause partial or fallback response
- Non-POST method returns method not allowed error

## How this service works

Market and on-chain data, paid per call in USDC on Base through the x402 protocol. No accounts, no API keys. Sources are public data providers; the value added here is keyless access, edge caching, multi-source fallback and normalised responses.

## Output

Returns a normalised JSON response containing market or on-chain data aggregated from multiple public data providers, edge-cached for low latency, with multi-source fallback for reliability.

## 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": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/santyvv-data-chain-call-pay-per-call-on-chain-data-api-0b6d3f25/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.santyvv.com](https://www.zero.xyz/host/x402.santyvv.com/llms.txt)