Yearn Total Vault TVL on a Chain

yearn/chain-tvl

The total value locked across all Yearn vaults on one chain, in USD, as a single number. Chains: Ethereum, Optimism, Gnosis, Polygon, Sonic, Fantom, Base, Arbitrum and Katana. Yearn public API data, passed through and served by Eden Engine; not an official Yearn product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

Yearn Finance

Data from the Yearn yDaemon API (yearn.fi). Served by Eden Engine; not an official Yearn product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

Install it Create an account

agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "yearn/chain-tvl" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "yearn/chain-tvl" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "yearn/chain-tvl", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "yearn/chain-tvl", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 21, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "chain"
  ],
  "properties": {
    "chain": {
      "enum": [
        "1",
        "10",
        "100",
        "137",
        "146",
        "250",
        "8453",
        "42161",
        "747474"
      ],
      "type": "string",
      "description": "EVM chain id that yDaemon indexes: 1 Ethereum, 10 Optimism, 100 Gnosis, 137 Polygon, 146 Sonic, 250 Fantom, 8453 Base, 42161 Arbitrum, 747474 Katana."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "result"
  ],
  "properties": {
    "result": {
      "type": "number",
      "description": "USD TVL."
    }
  },
  "additionalProperties": true
}