# ccxt_fetch_ohlcv

Call exchange.fetchOHLCV(symbol, timeframe, since, limit, params).

Agent View of the PolicyLayer registry record for `ccxt_fetch_ohlcv`. HTML page: https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-fetch-ohlcv

## Facts

- Tool: `ccxt_fetch_ohlcv`
- Server: Codex CCXT MCP (`oci:ghcr.io/lucyfox199818-collab/ccxt-mcp:0.1.0`) — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp.md
- Homepage: https://github.com/lucyfox199818-collab/codex-binance-agent
- Risk category: Read (Low risk)
- Registry record: grade F, 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": "ccxt_fetch_ohlcv",
    "arguments": {}
  }
}
```

## Why ccxt_fetch_ohlcv is rated Low

This tool performs a read-only query of historical market data. It has no side effects—it does not create, modify, delete, or execute trades. The function name and description indicate it retrieves data only. The severity is low because even if misused by an agent, fetching market data poses minimal risk; it cannot move money, execute trades, or cause permanent harm.

From the tool's own definition: "fetchOHLCV retrieves OHLCV (Open, High, Low, Close, Volume) market data from an exchange; no parameters modify or delete data, and the function signature indicates it only queries historical price data."

## Use case

AI agents call ccxt_fetch_ohlcv to retrieve information from Codex CCXT 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 Codex CCXT MCP:

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

## Other tools on Codex CCXT MCP (112)

- `ccxt_cancel_algo_order` — Destructive — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-cancel-algo-order.md
- `ccxt_cancel_all_algo_orders` — Destructive — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-cancel-all-algo-orders.md
- `ccxt_cancel_all_orders` — Destructive — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-cancel-all-orders.md
- `ccxt_cancel_all_orders_after` — Destructive — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-cancel-all-orders-after.md
- `ccxt_call` — Execute — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-call.md
- `ccxt_cancel_order` — Execute — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-cancel-order.md
- `ccxt_cancel_orders` — Execute — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-cancel-orders.md
- `ccxt_cancel_orders_for_symbols` — Execute — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-cancel-orders-for-symbols.md
- `ccxt_set_margin_mode` — Execute — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-set-margin-mode.md
- `ccxt_set_position_mode` — Execute — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-set-position-mode.md
- `ccxt_add_margin` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-add-margin.md
- `ccxt_create_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-order.md
- `ccxt_create_order_with_take_profit_and_stop_loss` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-order-with-take-profit-and-stop-loss.md
- `ccxt_create_orders` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-orders.md
- `ccxt_create_post_only_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-post-only-order.md
- `ccxt_create_protected_futures_entry` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-protected-futures-entry.md
- `ccxt_create_reduce_only_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-reduce-only-order.md
- `ccxt_create_stop_limit_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-stop-limit-order.md
- `ccxt_create_stop_loss_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-stop-loss-order.md
- `ccxt_create_stop_market_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-stop-market-order.md
- `ccxt_create_stop_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-stop-order.md
- `ccxt_create_take_profit_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-take-profit-order.md
- `ccxt_create_trailing_amount_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-trailing-amount-order.md
- `ccxt_create_trailing_percent_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-trailing-percent-order.md
- `ccxt_create_trigger_order` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-create-trigger-order.md
- `ccxt_reduce_margin` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-reduce-margin.md
- `ccxt_transfer` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-transfer.md
- `ccxt_withdraw` — Financial — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/ccxt-withdraw.md
- `audit_analyze_cycles` — Read — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/audit-analyze-cycles.md
- `audit_analyze_trading_decisions` — Read — https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp/audit-analyze-trading-decisions.md
- …and 82 more: https://policylayer.com/tools/io-github-lucyfox199818-collab-ccxt-mcp.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=io-github-lucyfox199818-collab-ccxt-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-lucyfox199818-collab-ccxt-mcp