Returns the list of available option expiration dates for a single underlying symbol. Applicable to stocks and ETFs with listed options — mutual funds are not supported. Use as the first step before calling get_options_chain to discover valid expiration dates, build expiration dropdowns, or check...
Single-target operation
Part of the Finimpulse MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call get_options_expirations to retrieve information from Finimpulse without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though get_options_expirations only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
tools:
get_options_expirations:
rules:
- action: allowSee the full Finimpulse policy for all 27 tools.
Agents calling read-class tools like get_options_expirations have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
Returns the list of available option expiration dates for a single underlying symbol. Applicable to stocks and ETFs with listed options — mutual funds are not supported. Use as the first step before calling get_options_chain to discover valid expiration dates, build expiration dropdowns, or check whether a symbol has options coverage.. It is categorised as a Read tool in the Finimpulse MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for get_options_expirations. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Finimpulse MCP server.
get_options_expirations 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 get_options_expirations rule in your Intercept 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 Intercept policy for get_options_expirations. 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.
get_options_expirations is provided by the Finimpulse MCP server (finimpulse-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.