// MCP TOOL REFERENCE

MERN MCP TOOLS

5 tools from the MERN MCP MCP Server, categorised by risk level.

// ALL 5 MERN MCP TOOLS

READ 1 tools

Read list_resources List manifest-managed resources and optionally scan for unmanaged ones.

WRITE 3 tools

Write add_field Preview or apply a new field on an existing manifest-managed resource. Write preview_scaffold Preview the generated files and integration edits for a MERN resource scaffold. Write scaffold_resource Generate a full MERN CRUD slice for one resource and either preview or apply the write plan.

DESTRUCTIVE 1 tools

Destructive delete_resource Preview or apply deletion for a manifest-managed generated resource.

// RUNNING THIS SERVER

The managed route: connect MERN MCP through the PolicyLayer gateway — every tool call above is checked against your policy before it runs, with a full audit log.

DIRECT INSTALL (UNMANAGED) npx -y mern-mcp

// FAQ

How many tools does the MERN MCP MCP server have? +

The MERN MCP MCP server exposes 5 tools across 3 categories: Read, Write, Destructive.

How do I enforce policies on MERN MCP tools? +

Route the MERN MCP server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard — they are enforced on every call before it reaches the server.

What risk categories do MERN MCP tools fall into? +

MERN MCP tools are categorised as Read (1), Write (3), Destructive (1). Each category has a recommended default policy.

Let agents act without letting them run wild.

Route your MCP servers through PolicyLayer and every tool call is checked against your policy before it runs — allow, deny, or require approval. Per-identity grants. Full audit log. Live in minutes.

SECURE YOUR MCP →

Free to start. No card required.

4,600+ MCP servers and 31,000+ tools scanned and risk-classified.