# RadhikaChain Mempool Observer

> RadhikaChain Mempool Observer is a paid API for AI agents from x402.radhikachain.xyz, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-15).

Returns real-time peer-to-peer mempool observations from a 200+ peer node, including pending transactions before block inclusion and large-swap detection with value, venue, and gas data.

## Facts

- Endpoint: GET https://x402.radhikachain.xyz/mempool
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/radhikachain-mempool-observer-6a7e1c56
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rEEt7mSpHaA_CgbPOreb_

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 radhikachain-mempool-observer-6a7e1c56
```

Example prompt: Can you pull the current mempool snapshot from RadhikaChain's 200+ peer node and show me any large pending swaps — I want to see the swap value, venue, and gas before these transactions get confirmed?

## When to prefer this

Choose this endpoint when you need pre-confirmation transaction visibility that public RPC nodes do not provide — especially for detecting large pending swaps across DeFi venues before they land on-chain. Preferred over generic RPC mempool calls when peer diversity (200+ direct peers) matters for completeness, or when you specifically need swap value, venue, and gas metadata on unconfirmed transactions.

## Known failure modes

- Payment not included or invalid x402 payment header — returns 402 Payment Required
- Node temporarily unavailable or syncing — returns 503 or empty mempool data
- No large swaps currently detected — returns empty swap list but successful response
- Rate limiting if called too frequently — returns 429 Too Many Requests
- Mempool data may be momentarily stale if peer connections are fluctuating

## How this service works

Telemetria de cadena, inteligencia de defensa y computo verificable (Halo2, Nova, Plonky3). Pago por peticion en USDC nativo en Base (eip155:8453) mediante x402 v2 scheme exact; sin cuenta ni suscripcion. Catalogo canonico: GET /.well-known/x402.

## Output

A snapshot of the current mempool as observed by a node with 200+ direct peers, including pending transactions before block inclusion, detected large-swap events with associated value, trading venue, and gas price. Provides pre-confirmation visibility that standard public RPC endpoints do not expose.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "body": {
     "type": "object",
     "additionalProperties": true
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": true
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "cadena": "bsc",
  "fuente": "http://172.200.248.64:8419/senales",
  "chain_id": 56,
  "fuente_viva": false,
  "error_fuente": "URLError: <urlopen error timed out>",
  "senales_totales": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/radhikachain-mempool-observer-6a7e1c56/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.radhikachain.xyz](https://www.zero.xyz/host/x402.radhikachain.xyz/llms.txt)