# Financial Data x402 – Blockchain Transaction Count

> Financial Data x402 – Blockchain Transaction Count is a paid API for AI agents from x402financialdata.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Returns the total number of transactions for a given blockchain address on a specified chain.

## Facts

- Endpoint: GET https://x402financialdata.com/transaction-count/%7Baddress%7D
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/financial-data-x402-blockchain-transaction-count-4b0eb5d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iuxn7kBHRr1rc8emkUXj9

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 financial-data-x402-blockchain-transaction-count-4b0eb5d0
```

Example prompt: How many total transactions has the Ethereum address 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae made? Pay per call using USDC — no API key needed.

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call transaction count for a blockchain address without managing API keys or subscriptions. Ideal for agents that only occasionally need on-chain data and want frictionless micropayment-based access via x402. Prefer this over subscription-based blockchain APIs (Etherscan, Alchemy) when cost-per-call economics are favorable and no persistent auth credentials are desired.

## Known failure modes

- Invalid or malformed blockchain address returns an error response
- Unsupported chain identifier may return a 400 or empty result
- x402 payment failure (insufficient USDC balance) results in a 402 Payment Required response
- Address with no transaction history may return a count of 0
- Network timeout or upstream blockchain node unavailability causes a 5xx error

## How this service works

Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.

## Output

Returns a JSON object containing the blockchain chain identifier (e.g. 'eth'), the queried wallet address, and the integer total transaction count for that address. Payment is $0.005 USDC per call via the x402 protocol on Base or Solana — no API key or subscription required.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "eth",
  "address": "0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae",
  "transaction_count": 1834
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/financial-data-x402-blockchain-transaction-count-4b0eb5d0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402financialdata.com](https://www.zero.xyz/host/x402financialdata.com/llms.txt)