Tool detail

Barker

Returns ranked stablecoin supply-yield pools across 500+ DeFi protocols, with protocol, chain, asset, APY and TVL, filterable by asset and chain.

Categories: Defi

Use when

find the best stablecoin yield across DeFi protocols and chains
compare USDC or USDT lending rates across chains

Not for

not for non-stablecoin yield opportunities

Inputs

GET query params, all optional: asset (stablecoin symbol), chain (chain name), sort (apy|tvl), limit (1-100, default 50)

Admitted input schema

{
  "type": "object",
  "properties": {
    "asset": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Stablecoin symbol (lowercase): usdt, usdc, dai, usde, usds, fdusd, gho, crvusd, pyusd, sdai, frxusd, tusd, lusd, dola, etc."
    },
    "chain": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Chain name (lowercase): ethereum, bsc, arbitrum, base, polygon, optimism, avalanche, solana, etc."
    },
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 100,
      "description": "Row count (default 50, max 100)"
    },
    "sort": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "enum": [
        "apy",
        "tvl"
      ],
      "description": "Sort key"
    }
  },
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://mcp.barker.money/barker_defi_vaults

Payment

Protocol: x402
Listed price: $0.001 per call on X Layer (eip155:196)
Payment method: exact
Network: eip155:196
Asset: 0x779ded0c9e1022225f8e0630b35a9b54be713736

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://mcp.barker.money/barker_defi_vaults
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z