Access historical market capitalization data for a company using the FMP Historical Market Capitalization API. This API helps track the changes in market value over time, enabling long-term assessments of a company's growth or decline.
Part of the Financial Modeling Prep MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call getHistoricalMarketCap to retrieve information from Financial Modeling Prep 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 getHistoricalMarketCap 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:
getHistoricalMarketCap:
rules:
- action: allowSee the full Financial Modeling Prep policy for all 253 tools.
Access historical market capitalization data for a company using the FMP Historical Market Capitalization API. This API helps track the changes in market value over time, enabling long-term assessments of a company's growth or decline.. It is categorised as a Read tool in the Financial Modeling Prep MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for getHistoricalMarketCap. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Financial Modeling Prep MCP server.
getHistoricalMarketCap 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 getHistoricalMarketCap 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 getHistoricalMarketCap. 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.
getHistoricalMarketCap is provided by the Financial Modeling Prep MCP server (cfocoder/financial-modeling-prep-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept