# RadhikaChain — Chain Candidates / UTXO Telemetry

> RadhikaChain — Chain Candidates / UTXO Telemetry is a paid API for AI agents from x402.radhikatmosphere.com, paid per call via x402, $1.3728/call, status unknown (last checked 2026-09-13).

Returns the current list of unspent transaction outputs (UTXOs) and candidate chain data from the RadhikaChain blockchain network, paid per-request via x402 USDC on Base.

## Facts

- Endpoint: GET https://x402.radhikatmosphere.com/chain/candidates
- Price: $1.3728/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/radhikachain-chain-candidates-utxo-telemetry-899fddf6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2kzeXCy6hL1TkgwJ9gMp_

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-chain-candidates-utxo-telemetry-899fddf6
```

Example prompt: Pull the current UTXO candidate list from RadhikaChain right now — I need the transaction IDs, amounts, and addresses for all unspent outputs, including any still unconfirmed ones.

## When to prefer this

Choose this endpoint when you need real-time UTXO telemetry specifically from the RadhikaChain network and can pay per-request in USDC via the x402 protocol on Base — no account or subscription required. Prefer this over general blockchain explorers when you need machine-readable UTXO candidate data for chain analysis, wallet operations, or monitoring unconfirmed outputs on RadhikaChain.

## Known failure modes

- Missing or invalid x402 payment header returns HTTP 402 with payment requirements
- Insufficient USDC balance causes payment failure and request rejection
- Network or node downtime may return 503 or timeout
- Malformed request headers may return 400 Bad Request
- Rate limiting or quota exceeded may return 429

## 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

Returns a JSON object containing a count of UTXOs and an array of UTXO records, each with fields: txid (transaction hash), vout (output index), amount (in base units), height (block height or null if unconfirmed), address (RadhikaChain bech32 address), and scriptPubKey (hex-encoded locking script).

## 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": {
  "count": 145,
  "utxos": [
   {
    "txid": "fcaaef1b6df1e625f065bb4042380c306100123392fb7e8e1d24779f0e3f1831",
    "vout": 1,
    "amount": 7311225114952,
    "height": null,
    "address": "radh1q3sgy50nfah8tqqa0az547tyhvwxauqyfgu44ep",
    "scriptPubKey": "00148c104a3e69edceb003afe8a95f2c97638dde0089"
   },
   {
    "txid": "4094f37063ea3b1fd638417b29d58e918956a13d59cdf13ba7fa19e125d044ea",
    "vout": 0,
    "amount": 7302282752243,
    "height": null,
    "address": "radh1q3sgy50nfah8tqqa0az547tyhvwxauqyfgu44ep",
    "scriptPubKey": "00148c104a3e69edceb003afe8a95f2c97638dde0089"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/radhikachain-chain-candidates-utxo-telemetry-899fddf6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.radhikatmosphere.com](https://www.zero.xyz/host/x402.radhikatmosphere.com/llms.txt)