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.

SERVERIndigo Protocol MCP SOURCEindigoprotocol/indigo-mcp

High RISK CLASS

Category Execute

Parameters 50 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/indigoprotocol-indigo-mcp/feed-interest-oracle.md

WHAT IT DOES

What feed_interest_oracle does on Indigo Protocol MCP

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.

Parameter	Type	Required	Description
`asset`	string	—
`owner`	string	—	Oracle operator pub key hash (hex)
`address`	string	—	Oracle operator Cardano bech32 address
`biasTime`	string	—	Oracle bias time in milliseconds as bigint string
`newInterestRate`	string	—	New interest rate as bigint string

Parameters from the server's own tool schema.

RISK

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 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.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs feed_interest_oracle safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Indigo Protocol MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For feed_interest_oracle, this is the rule to start with:

feed_interest_oracle Rate-limited

feed_interest_oracle stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Indigo Protocol MCP, apply this rule, and every feed_interest_oracle call is checked against it from then on.

FAQ

Questions about feed_interest_oracle

What does the feed_interest_oracle tool do? +

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. It is categorised as a Execute tool in the Indigo Protocol MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

What parameters does feed_interest_oracle accept? +

feed_interest_oracle accepts 5 parameters: asset, owner, address, biasTime, newInterestRate. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on feed_interest_oracle? +

Register the Indigo Protocol MCP server in PolicyLayer and add a rule for feed_interest_oracle: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Indigo Protocol MCP. Nothing to install.

What risk level is feed_interest_oracle? +

feed_interest_oracle is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit feed_interest_oracle? +

Yes. Add a rate_limit block to the feed_interest_oracle rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block feed_interest_oracle completely? +

Set action: deny in the PolicyLayer policy for feed_interest_oracle. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides feed_interest_oracle? +

feed_interest_oracle is provided by the Indigo Protocol MCP server (indigoprotocol/indigo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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