Barker | Apiosk Gateway

Base URL

https://gateway.apiosk.com/cbz-mcp-barker-money

Technical Specs

Auth MethodNone (x402 payment proof only)

Response FormatJSON

Endpoints3

Endpoints

Method	Path	Description	Cost
GET	/barker_defi_vaults	Query real-time stablecoin supply yield pools from Barker's index of 500+ DeFi protocols. Returns ranked rows with protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100 for %), and supply_tvl (USD). Use for questions like 'best stablecoin yield', 'where to earn on USDC', 'compare lending rates', '稳定币利率'.	$0.0011 default	View details
GET	/barker_market_overview	Barker's stablecoin market snapshot: total market cap, yield-bearing cap, asset distribution, chain distribution. Use for 'stablecoin market cap', 'USDT market share', '稳定币市场份额'. share_pct fields are decimals (0.425 = 42.5%).	$0.0011 default	View details
GET	/barker_market_trend	Barker's historical APY trend for stablecoins vs. US Treasury benchmark over a lookback window (7–180 days). Use for 'DeFi vs treasury', 'is stablecoin APY going up', 'crypto yield trend', '稳定币利率走势'.	$0.0011 default	View details

Endpoint documentation

GET/barker_defi_vaults

$0.0011 default

Description

Query real-time stablecoin supply yield pools from Barker's index of 500+ DeFi protocols. Returns ranked rows with protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100 for %), and supply_tvl (USD). Use for questions like 'best stablecoin yield', 'where to earn on USDC', 'compare lending rates', '稳定币利率'.

Pricing

$0.0011 default

Parameters

{
  "properties": {
    "asset": {
      "description": "Stablecoin symbol (lowercase): usdt, usdc, dai, usde, usds, fdusd, gho, crvusd, pyusd, sdai, frxusd, tusd, lusd, dola, etc.",
      "type": "string"
    },
    "chain": {
      "description": "Chain name (lowercase): ethereum, bsc, arbitrum, base, polygon, optimism, avalanche, solana, etc.",
      "type": "string"
    },
    "limit": {
      "description": "Row count (default 50, max 100)",
      "maximum": 100,
      "minimum": 1,
      "type": "integer"
    },
    "sort": {
      "description": "Sort key",
      "enum": [
        "apy",
        "tvl"
      ],
      "type": "string"
    }
  },
  "type": "object"
}

Example response

{
  "data": [
    {
      "asset_symbol": "USDC",
      "chain_name": "ethereum",
      "pool_uid": "aave-v3_ethereum_usdc_supply",
      "protocol_name": "Aave V3",
      "supply_apy_total": 0.0523,
      "supply_tvl": 1234567890
    }
  ],
  "success": true
}

GET/barker_market_overview

$0.0011 default

Description

Barker's stablecoin market snapshot: total market cap, yield-bearing cap, asset distribution, chain distribution. Use for 'stablecoin market cap', 'USDT market share', '稳定币市场份额'. share_pct fields are decimals (0.425 = 42.5%).

Pricing

$0.0011 default

Parameters

{
  "properties": {},
  "type": "object"
}

Example response

{
  "data": {
    "asset_distribution": [
      {
        "asset_symbol": "USDC",
        "share_pct": 0.154,
        "total_tvl": 11217252957
      },
      {
        "asset_symbol": "USDT",
        "share_pct": 0.135,
        "total_tvl": 9876543210
      }
    ],
    "stablecoin_mcap": {
      "date": "2026-05-19",
      "stablecoin_count": 202,
      "total": 339352596460,
      "yield_bearing": 27315302928,
      "yield_stablecoin_count": 84
    }
  },
  "success": true
}

GET/barker_market_trend

$0.0011 default

Description

Barker's historical APY trend for stablecoins vs. US Treasury benchmark over a lookback window (7–180 days). Use for 'DeFi vs treasury', 'is stablecoin APY going up', 'crypto yield trend', '稳定币利率走势'.

Pricing

$0.0011 default

Parameters

{
  "properties": {
    "days": {
      "description": "Lookback window in days (default 30)",
      "maximum": 180,
      "minimum": 7,
      "type": "integer"
    }
  },
  "type": "object"
}

Example response

{
  "data": {
    "days": 30,
    "stablecoin_apy_series": [
      {
        "apy": 0.045,
        "date": "2026-04-21"
      }
    ],
    "treasury_benchmark_series": [
      {
        "apy": 0.0438,
        "date": "2026-04-21"
      }
    ]
  },
  "success": true
}