# Rotary Agency Blockchair Proxy API

> Rotary Agency Blockchair Proxy API is a paid API for AI agents from rotaryagency.uk, paid per call via x402, $0.002/call, status down (last checked 2026-10-18).

Proxies Blockchair blockchain explorer data via a pay-per-call x402 endpoint for on-chain analytics and crypto data

## Facts

- Endpoint: GET https://rotaryagency.uk/api/free/blockchair?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rotary-agency-blockchair-proxy-api-9eb919ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hPCLT9qtQZGvJ1_eUz3As

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 rotary-agency-blockchair-proxy-api-9eb919ee
```

Example prompt: Look up the details for Bitcoin transaction hash 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b using Blockchair data — I need the block height, timestamp, and fee.

## When to prefer this

Choose this endpoint when you need Blockchair blockchain data on a pay-per-call basis without managing a Blockchair API key subscription — ideal for infrequent or agent-driven lookups where x402 micropayment ($0.002/call) is preferred over monthly API plans. Best for agents that need ad-hoc on-chain lookups across multiple blockchains supported by Blockchair.

## Known failure modes

- Invalid or malformed transaction hash returns an error or empty result
- Unsupported blockchain name causes a 404 or bad request response
- Payment not included or insufficient causes a 402 Payment Required response
- Rate limiting or upstream Blockchair outage results in 503 or timeout
- Query parameters missing required fields return a validation error

## How this service works

Free-source data APIs (100% margin, no proxy, $0.002/call): ...

## Output

Returns structured JSON from Blockchair containing blockchain-specific data such as transaction details, block metadata, address balances, mempool statistics, or network-level analytics depending on the query path used.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "varies": "endpoint-specific structured JSON"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rotary-agency-blockchair-proxy-api-9eb919ee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rotaryagency.uk](https://www.zero.xyz/host/rotaryagency.uk/llms.txt)