# realtime_data_streams

High-frequency real-time market data for trading agents, market-making bots and fintech analysts. Returns FX ticks (bid/ask/spread), intraday OHLCV candles, crypto orderbook snapshots (depth 5-50), recent trades with VWAP, and sovereign bond yields. All sources are keyless public REST APIs (Binance, Coinbase, Kraken, OKX, open FX feeds, worldgovernmentbonds.com). Ultra-short cache: 10s for ticks/trades, 60s for orderbook. Use when an agent needs live market data as precise numeric inputs for trading logic, arbitrage detection, or portfolio valuation.

Agent View of the PolicyLayer registry record for `realtime_data_streams`. HTML page: https://policylayer.com/tools/io-github-getgapup-gapup-mcp/realtime-data-streams

## Facts

- Tool: `realtime_data_streams`
- Server: Gapup Mcp (`https://mcp.gapup.io/mcp`) — https://policylayer.com/tools/io-github-getgapup-gapup-mcp.md
- Homepage: https://github.com/getgapup/gapup-mcp-public
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 5 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `mode` | string | yes | Data stream type: fx_tick (latest FX bid/ask/mid/spread), fx_history_intraday (OHLCV candles), crypto_orderbook (order book snapshot), crypto_trades_recent (las |
| `async` | boolean | no | If true, returns a job_id immediately (<200ms) instead of waiting for the result. Poll the result with job_result(job_id). Use for slow tools to avoid client ti |
| `depth` | number | no | Orderbook depth (levels each side) for crypto_orderbook mode (default: 20) |
| `period` | string | no | Candle period for fx_history_intraday mode (default: 5m) |
| `symbol` | string | yes | Market symbol. FX: EURUSD, GBPUSD, USDJPY. Crypto: BTCUSDT, ETHUSDT, BTC-USD. Bonds: US10Y, US2Y, DE10Y, FR10Y, UK10Y, JP10Y, IT10Y |

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": "realtime_data_streams",
    "arguments": {
      "mode": "<mode>",
      "symbol": "<symbol>"
    }
  }
}
```

## Why realtime_data_streams is rated Low

This tool retrieves and queries market data from public sources. While it serves trading agents and fintech workflows, the tool itself performs only data retrieval with no side effects.

From the tool's own definition: "Returns real-time market data: FX ticks (bid/ask/spread), OHLCV candles, crypto orderbook snapshots, recent trades with VWAP, and sovereign bond yields. All retrieval from keyless public REST APIs with short cache windows."

## Use case

AI agents call realtime_data_streams to retrieve information from Gapup Mcp 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 Gapup Mcp:

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

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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-getgapup-gapup-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-getgapup-gapup-mcp