# Postandshare Multi-Chain Gas Price Reader

> Postandshare Multi-Chain Gas Price Reader is a paid API for AI agents from api.postandshare.net, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-28).

Returns current gas prices for a specified EVM-compatible blockchain network (Base, Ethereum, Arbitrum, or Polygon)

## Facts

- Endpoint: GET https://api.postandshare.net/v1/chain/gas?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/postandshare-multi-chain-gas-price-reader-bdf0e1e5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QCR-VfBEFvcyAfIZbNETm

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 postandshare-multi-chain-gas-price-reader-bdf0e1e5
```

Example prompt: What are the current gas prices on the Ethereum network right now?

## When to prefer this

Choose this endpoint when you need real-time gas price data for one of the four supported EVM chains (Base, Ethereum, Arbitrum, Polygon) and want a simple pay-per-call model without API key management. Especially useful for agents that need on-demand gas estimates without committing to a subscription.

## Known failure modes

- Invalid or unsupported network enum value returns an error
- Network RPC unavailability may cause timeout or stale data
- Payment failure via x402 returns HTTP 402 before data is served
- Missing network parameter defaults to Base but may surprise callers expecting explicit behavior

## How this service works

x402 pay-per-call data endpoints for AI agents: multi-chain reads (Base, Ethereum, Arbitrum, Polygon) and Nigerian reference data. Format/reference validation only — no personal data, no identity-database lookup.

## Output

Returns current gas price data for the requested EVM network, likely including values such as base fee, priority fee, or gas price in gwei, enabling cost estimation for on-chain transactions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "network": {
   "enum": [
    "base",
    "ethereum",
    "arbitrum",
    "polygon"
   ],
   "type": "string",
   "description": "Chain to read (default base)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/postandshare-multi-chain-gas-price-reader-bdf0e1e5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.postandshare.net](https://www.zero.xyz/host/api.postandshare.net/llms.txt)