# swissnbm.rates.saron

Retrieve Swiss Average Rate Overnight (SARON) and compound term rates published by the Swiss National Bank: overnight SARON, Tomorrow Next, 1-month, 3-month, and 6-month compound rates. SARON replaced LIBOR as the Swiss reference rate benchmark in 2021. Returns daily observations for the requested period. Vital for Swiss franc derivatives pricing, loan referencing, and interest rate risk analysis. Source: Swiss National Bank data.snb.ch (cube: zirepo), Swiss OGD open license, no auth.

Agent View of the PolicyLayer registry record for `swissnbm.rates.saron`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/swissnbm.rates.saron

## Facts

- Tool: `swissnbm.rates.saron`
- Server: Apibase (`apibase-mcp-client`) — https://policylayer.com/tools/io-github-whiteknightonhorse-apibase.md
- Install: `npx -y apibase-mcp-client`
- Homepage: https://github.com/whiteknightonhorse/APIbase
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 1
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | integer | no | Number of most recent daily observations to return per SARON series (1–365, default 90). |

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": "swissnbm.rates.saron",
    "arguments": {}
  }
}
```

## Why swissnbm.rates.saron is rated Low

Tool retrieves public financial reference rates with no side effects or modification capability.

From the tool's own definition: "Retrieve Swiss Average Rate Overnight (SARON) rates; returns daily observations; no auth"

## Use case

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

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Apibase:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "swissnbm.rates.saron": {}
  }
}
```

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## 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=io-github-whiteknightonhorse-apibase · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-whiteknightonhorse-apibase