# SYNTHORA Blockscout Multi-Chain Metrics Oracle

> SYNTHORA Blockscout Multi-Chain Metrics Oracle is a paid API for AI agents from blockscout-chain-stats-multichain.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns live per-chain explorer metrics (block time, gas prices, gas used, addresses, blocks, transactions, market cap) from public Blockscout instances for Base, Optimism, Gnosis, and Ethereum.

## Facts

- Endpoint: POST https://blockscout-chain-stats-multichain.hergertsynthora.com/service
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-blockscout-multi-chain-metrics-oracle-f2089eb8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kkRa6dX3FB8AQoVrWydcA

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 synthora-blockscout-multi-chain-metrics-oracle-f2089eb8 -d '<json body>'
```

Example prompt: Pull the latest Blockscout metrics for Base, Optimism, Gnosis, and Ethereum — I need the slow, average, and fast gas prices and average block time for each chain so I can pick the cheapest one to transact on right now.

## When to prefer this

Choose this endpoint when an autonomous agent or scheduler needs real-time, cross-chain gas and network metrics from Blockscout explorers without building direct integrations to each chain's API. Ideal for routing decisions (cheapest/least-congested chain), DeFi automation, and dashboards that need unified multi-chain stats (Base, Optimism, Gnosis, Ethereum) in a single call. Prefer over building direct Blockscout API calls when you need aggregation across chains or when operating in an x402 micropayment environment.

## Known failure modes

- Upstream Blockscout API unavailable for a specific chain — partial or null result for that chain
- Invalid or missing keys/caller fields — authentication rejection
- Network timeout if Blockscout instances are slow to respond
- Stale data if Blockscout explorer is lagging behind chain head
- Malformed payload causing 400-level error

## How this service works

Returns per-chain explorer metrics (average block time, live gas prices slow/average/fast, gas used today, total addresses, total blocks, network utilization, market cap) from public Blockscout instances for Base, Optimism, Gnosis and Ethereum. Serves autonomous cross-chain agents and A2A schedulers picking the cheapest, least-congested chain to transact on. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

## Output

A JSON object with ok:true and a result containing coin_price, gas_prices (slow/average/fast in Gwei), total_blocks, gas_used_today, total_addresses, average_block_time (in ms), total_transactions, and transactions_today, sourced from Blockscout public explorer APIs for the queried chain. Also includes provenance metadata showing the source URL and oracle name.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "keys": {
   "type": "string",
   "description": "keys"
  },
  "caller": {
   "type": "string",
   "description": "caller"
  },
  "payload": {
   "type": "string",
   "description": "payload"
  },
  "provides": {
   "type": "string",
   "description": "provides"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "blockscout-chain-stats-multichain",
  "result": {
   "coin_price": "1797.4",
   "gas_prices": {
    "fast": 0.02,
    "slow": 0.01,
    "average": 0.01
   },
   "total_blocks": "48294894",
   "gas_used_today": "1273974157481",
   "total_gas_used": "0",
   "total_addresses": "917069280",
   "average_block_time": 2000,
   "total_transactions": "6785087263",
   "transactions_today": "7788438"
  },
  "provenance": {
   "url": "https://base.blockscout.com/api/v2/stats",
   "source": "Blockscout Multi-Chain Metrics Oracle"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-blockscout-multi-chain-metrics-oracle-f2089eb8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockscout-chain-stats-multichain.hergertsynthora.com](https://www.zero.xyz/host/blockscout-chain-stats-multichain.hergertsynthora.com/llms.txt)