Fetches market data (typically ticker data) for a specific options contract.
AI agents call fetch_option_contract_data to retrieve information from CCXT MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves public market data for an options contract without modifying any state, creating orders, executing trades, or moving funds. Fetching ticker data is a read-only query operation. The low severity reflects that misuse would only expose market information the user likely already has access to through other means.
From the tool's definition Tool name contains 'fetch' and description states 'Fetches market data (typically ticker data)' - these are retrieval operations with no side effects.
Documented attack patterns abuse exactly the kind of access fetch_option_contract_data gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and CCXT MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for fetch_option_contract_data:
{
"version": "1",
"default": "deny",
"tools": {
"fetch_option_contract_data": {}
}
}fetch_option_contract_data is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Fetches market data (typically ticker data) for a specific options contract. It is categorised as a Read tool in the CCXT MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CCXT MCP Server MCP server in PolicyLayer and add a rule for fetch_option_contract_data: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches CCXT MCP Server. Nothing to install.
fetch_option_contract_data is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the fetch_option_contract_data rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for fetch_option_contract_data. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
fetch_option_contract_data is provided by the CCXT MCP Server MCP server (jcwleo/ccxt-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from CCXT MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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19 CCXT MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.