Monitor real-time prices and performance metrics for a portfolio of cryptocurrency holdings. Returns current price per coin, 24-hour percentage change, portfolio value summary, and top movers. Use for active portfolio management and price monitoring.
Part of the Finance & Market Data MCP Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call track_crypto_portfolio to retrieve information from Finance & Market Data MCP Server 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 track_crypto_portfolio 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:
track_crypto_portfolio:
rules:
- action: allowSee the full Finance & Market Data MCP Server policy for all 5 tools.
Agents calling read-class tools like track_crypto_portfolio 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.
Monitor real-time prices and performance metrics for a portfolio of cryptocurrency holdings. Returns current price per coin, 24-hour percentage change, portfolio value summary, and top movers. Use for active portfolio management and price monitoring.. It is categorised as a Read tool in the Finance & Market Data MCP Server MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for track_crypto_portfolio. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Finance & Market Data MCP Server MCP server.
track_crypto_portfolio 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 track_crypto_portfolio 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 track_crypto_portfolio. 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.
track_crypto_portfolio is provided by the Finance & Market Data MCP Server MCP server (nexgendata-apify/finance-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