# get_instrument

Get details for a specific instrument by name

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

## Facts

- Tool: `get_instrument`
- 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_instrument",
    "arguments": {}
  }
}
```

## Why get_instrument is rated Low

This tool retrieves financial market data (instrument details) without modifying, executing, or deleting anything. It is a simple lookup query against a public API. There are no side effects, no code execution, and no financial transactions. The low severity reflects that accessing public market data poses minimal risk even if misused by an AI agent.

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

## Use case

AI agents call get_instrument 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_instrument": {}
  }
}
```

## 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_currency` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-currency.md
- `get_funding_rate_history` — Read — https://policylayer.com/tools/aadarshvelu-derive-mcp/get-funding-rate-history.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