# feed_interest_oracle

Feed a new interest rate to the interest oracle for a given iAsset. Returns an unsigned transaction (CBOR hex) for client-side signing. Only callable by the oracle operator.

Agent View of the PolicyLayer registry record for `feed_interest_oracle`. HTML page: https://policylayer.com/tools/indigoprotocol-indigo-mcp/feed-interest-oracle

## Facts

- Tool: `feed_interest_oracle`
- Server: Indigo Protocol MCP (`indigoprotocol/indigo-mcp`) — https://policylayer.com/tools/indigoprotocol-indigo-mcp.md
- Homepage: https://github.com/indigoprotocol/indigo-mcp
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 5
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `asset` | string | no |  |
| `owner` | string | no | Oracle operator pub key hash (hex) |
| `address` | string | no | Oracle operator Cardano bech32 address |
| `biasTime` | string | no | Oracle bias time in milliseconds as bigint string |
| `newInterestRate` | string | no | New interest rate as bigint string |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "feed_interest_oracle",
    "arguments": {}
  }
}
```

## Why feed_interest_oracle is rated High

This tool triggers an on-chain operation (submitting an oracle interest rate update) by constructing a transaction on a DeFi protocol. It modifies protocol state (interest rates) which affects all CDPs/loans referencing that iAsset. While it doesn't directly move money, feeding manipulated interest rates could have significant financial impact on borrowers and the protocol.

From the tool's own definition: "Feed a new interest rate to the interest oracle for a given iAsset. Returns an unsigned transaction (CBOR hex) for client-side signing. Only callable by the oracle operator."

## Use case

AI agents invoke feed_interest_oracle to trigger actions in Indigo Protocol MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Indigo Protocol MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "feed_interest_oracle": {
      "limits": [
        {
          "counter": "feed_interest_oracle_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Indigo Protocol MCP (61)

- `annul_sp_request` — Destructive — https://policylayer.com/tools/indigoprotocol-indigo-mcp/annul-sp-request.md
- `freeze_cdp` — Execute — https://policylayer.com/tools/indigoprotocol-indigo-mcp/freeze-cdp.md
- `process_sp_request` — Execute — https://policylayer.com/tools/indigoprotocol-indigo-mcp/process-sp-request.md
- `start_interest_oracle` — Execute — https://policylayer.com/tools/indigoprotocol-indigo-mcp/start-interest-oracle.md
- `adjust_sp_account` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/adjust-sp-account.md
- `adjust_staking_position` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/adjust-staking-position.md
- `burn_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/burn-cdp.md
- `cancel_lrp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/cancel-lrp.md
- `claim_lrp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/claim-lrp.md
- `close_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/close-cdp.md
- `deposit_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/deposit-cdp.md
- `distribute_staking_rewards` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/distribute-staking-rewards.md
- `leverage_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/leverage-cdp.md
- `liquidate_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/liquidate-cdp.md
- `mint_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/mint-cdp.md
- `open_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/open-cdp.md
- `redeem_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/redeem-cdp.md
- `redeem_lrp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/redeem-lrp.md
- `withdraw_cdp` — Financial — https://policylayer.com/tools/indigoprotocol-indigo-mcp/withdraw-cdp.md
- `analyze_cdp_health` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/analyze-cdp-health.md
- `get_ada_price` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-ada-price.md
- `get_all_cdps` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-all-cdps.md
- `get_apr_by_key` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-apr-by-key.md
- `get_apr_rewards` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-apr-rewards.md
- `get_asset` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-asset.md
- `get_asset_price` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-asset-price.md
- `get_assets` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-assets.md
- `get_blockfrost_balances` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-blockfrost-balances.md
- `get_cdps_by_address` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-cdps-by-address.md
- `get_cdps_by_owner` — Read — https://policylayer.com/tools/indigoprotocol-indigo-mcp/get-cdps-by-owner.md
- …and 31 more: https://policylayer.com/tools/indigoprotocol-indigo-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=indigoprotocol-indigo-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/indigoprotocol-indigo-mcp