# santyvv-data DeFi Chain History

> santyvv-data DeFi Chain History is a paid API for AI agents from x402.santyvv.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Fetches normalized on-chain transaction history for DeFi activity, paid per call in USDC via x402 protocol with no API key required

## Facts

- Endpoint: GET https://x402.santyvv.com/api/defi/chain-history?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/santyvv-data-defi-chain-history-bf23c5b0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SoPSUiOue3KY2RVA4m-FZ

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-defi-chain-history-bf23c5b0
```

Example prompt: Pull the on-chain transaction history for wallet 0xAbC...123 using the santyvv DeFi chain history endpoint — I need the normalized activity records and I don't want to set up any API keys.

## When to prefer this

Choose this endpoint when you need on-chain DeFi transaction history without going through API key registration or account setup, especially in agentic workflows where keyless micropayment access via x402 is preferred. Ideal when you want normalized, consistently structured responses aggregated from multiple public blockchain data sources with edge caching for reliability.

## Known failure modes

- Payment not included or insufficient USDC — returns HTTP 402 requiring x402 payment
- Invalid or missing query parameters — returns 400 with parameter error
- Chain or address not supported — returns 404 or empty result set
- Upstream data provider outage — may return partial or degraded response despite fallback
- Rate or network issues — transient 5xx errors from edge infrastructure

## 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

A normalized list of on-chain transactions and DeFi activity records for the queried address/chain, aggregated from public blockchain data providers, edge-cached, 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/santyvv-data-defi-chain-history-bf23c5b0/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)