SBOR

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Check a lending rate before your agent borrows. Bitcoin-backed dollar rates from contracts. No key.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "SBOR": {
      "url": "https://mcp.sbor.xyz/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (6)

• get_rate read-only

  SBOR's benchmark borrow and supply rates, read from lending contract state: BTC-COLLATERAL-USD, what it costs to borrow dollars against bitcoin, with a rate per stablecoin (from 14 October 2026), and the currency indices for lending on Stacks. Use this to judge whether a lending offer is good: borrowing above the SBOR borrow rate means paying more than the market, supplying below the supply rate means earning less. Returns every currency index unless one is named. Always read the freshness line first.

  Parameters:

  • index — string — BTC-COLLATERAL-USD for borrowing any dollar stablecoin against bitcoin, BTC-COLLATERAL-<stablecoin> for one stablecoin, or a Stacks currency index. Omit for all of them.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• compare_rate read-only

  Given a rate you have been offered, say whether it is above or below the market for that currency, and by how much. This is the main reason SBOR exists. Recommended use: if a borrow offer is more than 50 basis points above the benchmark, stop and ask a human. Use SBOR to stop, never to start. For a dollar loan against bitcoin, compare with that stablecoin's rate (for example BTC-COLLATERAL-USDC) where one is published, else with BTC-COLLATERAL-USD; for lending on Stacks against other collateral, with the index for the currency. This tool refuses rather than guesses: an error result means there is no trustworthy answer, not that the rate is bad.

  Parameters:

  • rate (required) — number — The rate offered, as a percentage between 0 and 100. 4.2 means 4.2%, not 0.042.
  • side (required) — string — Whether you would be borrowing or supplying.
  • index (required) — string — Which benchmark: BTC-COLLATERAL-USD or BTC-COLLATERAL-<stablecoin> for borrowing dollars against bitcoin, or a Stacks currency index.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• list_markets read-only

  Every venue and asset in an index, with its borrow rate, supply rate, utilization, depth and weight. Utilization explains why a rate sits where it does.

  Parameters:

  • index — string — BTC-COLLATERAL-USD, BTC-COLLATERAL-<stablecoin>, or a Stacks currency index. Omit for the Stacks indices.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• get_history read-only

  Daily fixings since each rate began. Use this to see whether a rate is unusual, or how the cost of capital has moved. Means are given per methodology version, never across a change in how the number is built.

  Parameters:

  • index (required) — string — A Stacks currency index, BTC-COLLATERAL-USD (from 14 October 2026), or BTC-COLLATERAL-<stablecoin>.
  • days — integer — How many days back, up to 200. Default 30.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• compare_chains read-only

  The same asset classes on the largest lending markets on Ethereum, Base, Hyperliquid and Solana, plus SOFR, the US repo rate, and what it costs to borrow dollars against bitcoin. Context only: none of these is ever a constituent of an SBOR index. Every rate is read from the venues' contracts (Aave on Ethereum and Base, HyperLend on Hyperliquid, Kamino on Solana, Morpho for the bitcoin-collateral markets); DefiLlama picks the largest market per chain, gives its size, and stands in only if a read fails.

  Parameters:

  • index — string — Only markets comparable to this index. Omit for all.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• get_methodology read-only

  The full methodology and integration policy: how the fixing is built, what is excluded and why, and what SBOR will and will not do. Read this before quoting a rate in anything that matters.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

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