getHistoricalInterestRates

SERVERAPI Ninjas SOURCEhttps://mcp.api-ninjas.com/mcp

Low RISK CLASS

Category Read

Parameters 61 required

Recommended Allowedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/com-api-ninjas-mcp/gethistoricalinterestrates.md

WHAT IT DOES

What getHistoricalInterestRates does on API Ninjas

AI agents call getHistoricalInterestRates to retrieve information from API Ninjas without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`page`	string	—	Pagination cursor. Pass the `next` value from a previous response to retrieve the following page of data points.
`rate`	string	Yes	The specific interest rate identifier. Supports central bank rates (e.g. central_bank_us, central_bank_eu), benchmark rates (e.g. sofr, effr, euribor_3_months,
`end_date`	string	—	End date for the data range (inclusive) in YYYY-MM-DD format, UTC. Cannot be combined with end_time.
`end_time`	integer	—	End time for the data range, specified as a UNIX timestamp in seconds. Alternative to end_date.
`start_date`	string	—	Start date for the data range (inclusive) in YYYY-MM-DD format, UTC. Cannot be combined with start_time.
`start_time`	integer	—	Start time for the data range, specified as a UNIX timestamp in seconds. Alternative to start_date.

Parameters from the server's own tool schema.

RISK

Why getHistoricalInterestRates is rated Low

Even though getHistoricalInterestRates only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs getHistoricalInterestRates safely

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

getHistoricalInterestRates Allowed

getHistoricalInterestRates is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "getHistoricalInterestRates": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect API Ninjas, apply this rule, and every getHistoricalInterestRates call is checked against it from then on.

FAQ

Questions about getHistoricalInterestRates

What does the getHistoricalInterestRates tool do? +

Returns the published history of a benchmark rate over an optional date range, given as start_date/end_date (YYYY-MM-DD) or start_time/end_time (UNIX seconds). For the latest value only use /interestrate. It is categorised as a Read tool in the API Ninjas MCP Server, which means it retrieves data without modifying state.

What parameters does getHistoricalInterestRates accept? +

getHistoricalInterestRates accepts 6 parameters: page, rate, end_date, end_time, start_date, start_time. Required: rate. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on getHistoricalInterestRates? +

Register the API Ninjas MCP server in PolicyLayer and add a rule for getHistoricalInterestRates: 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 API Ninjas. Nothing to install.

What risk level is getHistoricalInterestRates? +

getHistoricalInterestRates is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit getHistoricalInterestRates? +

Yes. Add a rate_limit block to the getHistoricalInterestRates 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 getHistoricalInterestRates completely? +

Set action: deny in the PolicyLayer policy for getHistoricalInterestRates. 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 getHistoricalInterestRates? +

getHistoricalInterestRates is provided by the API Ninjas MCP server (https://mcp.api-ninjas.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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