# Blast Chain Status & Native Yield Data

> Blast Chain Status & Native Yield Data is a paid API for AI agents from api.chainmarket-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-24).

Returns current block status, gas metrics, and native yield data (USDB and WETH) for the Blast L2 blockchain

## Facts

- Endpoint: GET https://api.chainmarket-api.workers.dev/api/crypto/blast-gold-points?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blast-chain-status-native-yield-data-0ba83716
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zhB4RLt5rTbTf7iRklS_W

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 blast-chain-status-native-yield-data-0ba83716
```

Example prompt: What's the current block status on the Blast L2 chain, including gas prices and how much native yield USDB and WETH have accumulated?

## When to prefer this

Use this endpoint when you need real-time Blast L2 chain health, gas metrics, or native yield data (USDB/WETH) without setting up your own RPC connection. Ideal for AI agents monitoring Blast DeFi positions, gas costs, or yield-bearing assets. Prefer this over generic block explorers when you need structured JSON output with native yield details in a single pay-per-call, no-signup call.

## Known failure modes

- RPC node unreachable — upstream Blast RPC may be down
- Stale data — if the Blast chain experiences downtime, checkedAt timestamp may lag
- Payment failure — if x402 payment is not processed, call is not charged and data is not returned
- Malformed response if Blast undergoes a hard fork or block structure change

## How this service works

Blast L2 native yield from the chain itself: for the rebasing USDB (stablecoin yield) and WETH (ETH staking yield) predeploy contracts, total supply and share price — the cumulative native-yield multiplier since launch (e.g. 1.126 = 12.6% earned) — plus latest/safe/finalized blocks, finality lag, gas price and block time. Blast Gold / DApp points are allocated off-chain by Blast and have no public API, so they are not reported.

## Output

A JSON object containing head, safe, and finalized block metadata (timestamp, number, gas used, gas limit, base fee in Gwei, transaction count), chain info (chain name, chainId, RPC source, checked-at timestamp), native yield data for USDB and WETH (contract address, share price, total supply, cumulative yield %), average block time in seconds, current gas price in Gwei, and lag metrics between head, safe, and finalized blocks.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "head": {
   "time": "2026-10-23T09:36:07.000Z",
   "number": 41969176,
   "gasUsed": 1769088,
   "gasLimit": 30000000,
   "baseFeeGwei": 2.57e-7,
   "transactions": 5
  },
  "safe": {
   "time": "2026-10-23T09:26:19.000Z",
   "number": 41968882,
   "gasUsed": 1493179,
   "gasLimit": 30000000,
   "baseFeeGwei": 2.52e-7,
   "transactions": 6
  },
  "chain": "Blast",
  "source": "https://rpc.blast.io",
  "chainId": 81457,
  "checkedAt": "2026-10-23T09:36:08.723Z",
  "finalized": {
   "time": "2026-10-23T09:04:39.000Z",
   "number": 41968232,
   "gasUsed": 1030736,
   "gasLimit": 30000000,
   "baseFeeGwei": 2.52e-7,
   "transactions": 4
  },
  "headToSafe": {
   "blocks": 294,
   "seconds": 588
  },
  "nativeYield": [
   {
    "symbol": "USDB",
    "contract": "0x4300000000000000000000000000000000000003",
    "sharePrice": 1.126470145,
    "totalSupply": 9396841.898,
    "cumulativeYieldPct": 12.65
   },
   {
    "symbol": "WETH",
    "contract": "0x4300000000000000000000000000000000000004",
    "sharePrice": 1.079906351,
    "totalSupply": 3121.337,
    "cumulativeYieldPct": 7.99
   }
  ],
  "gasPriceGwei": 0.001,
  "avgBlockTimeSec": 2,
  "headToFinalized": {
   "blocks": 944,
   "seconds": 1888
  },
  "gasUsedPctOfLimit": 5.9
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blast-chain-status-native-yield-data-0ba83716/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.chainmarket-api.workers.dev](https://www.zero.xyz/host/api.chainmarket-api.workers.dev/llms.txt)