install-package

Install a npm package in a project

Accepts file system path (directory)

Part of the React MCP MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

// WHEN AI AGENTS USE THIS TOOL

AI agents use install-package to create or modify resources in React MCP. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

// WHY ENFORCE A POLICY ON INSTALL-PACKAGE

Without a policy, an AI agent could call install-package repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach React MCP.

// RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

streen9-react-mcp.yaml

tools:
  install-package:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full React MCP policy for all 9 tools.

// DETAILS

Tool Name install-package

Category Write

MCP Server React MCP MCP Server

Risk Level Medium

// MORE REACT MCP TOOLS

Execute run-command Execute run-react-app Execute stop-process Write create-react-app Write edit-file Read get-process-output Read list-processes Read read-file

View all 9 tools →

// WHAT CAN GO WRONG

Agents calling write-class tools like install-package have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER WRITE TOOLS ACROSS MCP SERVERS

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

AbraFlexi contact_create AbraFlexi contact_update AbraFlexi evidence_create AbraFlexi evidence_update AbraFlexi invoice_issued_update AbraFlexi invoice_received_create

// RELATED READING

// FAQ

What does the install-package tool do? +

Install a npm package in a project. It is categorised as a Write tool in the React MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on install-package? +

Add a rule in your Intercept YAML policy under the tools section for install-package. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the React MCP MCP server.

What risk level is install-package? +

install-package is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit install-package? +

Yes. Add a rate_limit block to the install-package 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.

How do I block install-package completely? +

Set action: deny in the Intercept policy for install-package. 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.

What MCP server provides install-package? +

install-package is provided by the React MCP MCP server (Streen9/react-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

install-package

Enforce policies on React MCP