# get_currency

Get details for a specific currency

Agent View of the PolicyLayer registry record for `get_currency`. HTML page: https://policylayer.com/tools/aadarshvelu-derive-mcp/get-currency

## Facts

- Tool: `get_currency`
- Server: Derive MCP Server (`aadarshvelu/derive-mcp`) — https://policylayer.com/tools/aadarshvelu-derive-mcp.md
- Homepage: https://github.com/aadarshvelu/derive-mcp
- Risk category: Read (Low risk)
- Registry record: grade A, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why get_currency is rated Low

This tool queries and retrieves currency details from a public API with no side effects. It does not modify, delete, or execute operations. While financial data is involved, the tool itself performs no financial transactions or operations—it only reads and returns information. This is a straightforward Read operation with low risk.

From the tool's own definition: "Tool name 'get_currency' and description 'Get details for a specific currency' indicate a retrieval operation."

## Use case

AI agents call get_currency to retrieve information from Derive MCP Server 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 Derive MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_currency": {}
  }
}
```

## Other tools on Derive MCP Server (14)

- `get_all_currencies` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-all-currencies.md
- `get_all_instruments` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-all-instruments.md
- `get_funding_rate_history` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-funding-rate-history.md
- `get_instrument` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-instrument.md
- `get_interest_rate_history` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-interest-rate-history.md
- `get_latest_signed_feeds` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-latest-signed-feeds.md
- `get_liquidation_history` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-liquidation-history.md
- `get_margin` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-margin.md
- `get_option_settlement_history` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-option-settlement-history.md
- `get_spot_feed_history` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-spot-feed-history.md
- `get_spot_feed_history_candles` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-spot-feed-history-candles.md
- `get_statistics` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-statistics.md
- `get_ticker` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-ticker.md
- `get_tickers` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-tickers.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=aadarshvelu-derive-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/aadarshvelu-derive-mcp