write-query · SQLite Cloud MCP Server MCP: Risk & Policy

WHAT IT DOES

What write-query does on SQLite Cloud MCP Server

AI agents use write-query to create or update resources in SQLite Cloud MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SQLite Cloud MCP Server environment.

WHY IT NEEDS A POLICY

Why write-query needs a policy

The tool modifies or creates data reversibly through INSERT (creates rows), UPDATE (modifies rows), or DELETE (removes rows). These are classic write operations that alter database state but can be rolled back or undone (e.g., via transaction rollback or re-insertion). It does not irreversibly destroy data or execute arbitrary code—it is scoped to write operations.

From the tool's definition Tool explicitly supports INSERT, UPDATE, or DELETE query execution on SQLite databases. Description states it modifies data ('INSERT, UPDATE, or DELETE query').

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

write-query Rate-limited

write-query stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "write-query": {
      "limits": [
        {
          "counter": "write-query_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches SQLite Cloud MCP Server, so you can run agents against it safely.

FAQ

Questions about write-query

What does the write-query tool do? +

Execute a INSERT, UPDATE, or DELETE query on the SQLite database on SQLite Cloud. It is categorised as a Write tool in the SQLite Cloud MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on write-query? +

Register the SQLite Cloud MCP Server MCP server in PolicyLayer and add a rule for write-query: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches SQLite Cloud MCP Server. Nothing to install.

What risk level is write-query? +

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

Can I rate-limit write-query? +

Yes. Add a rate_limit block to the write-query rule in your PolicyLayer 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 write-query completely? +

Set action: deny in the PolicyLayer policy for write-query. 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 write-query? +

write-query is provided by the SQLite Cloud MCP Server MCP server (sqlitecloud/sqlitecloud-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.