insert_block · Logseq MCP Tools MCP: Risk & Policy

WHAT IT DOES

What insert_block does on Logseq MCP Tools

AI agents use insert_block to create or update resources in Logseq MCP Tools — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Logseq MCP Tools environment.

WHY IT NEEDS A POLICY

Why insert_block needs a policy

The name 'insert_block' strongly suggests a data creation or modification operation rather than read-only access. Given the server's purpose (local Logseq operations) and sibling tools that create, delete, and move blocks, 'insert_block' almost certainly adds or modifies block entries, making it Write rather than Read. It is not Destructive (reversible), Execute (no arbitrary code execution), or Financial.

From the tool's definition Tool named 'insert_block' with no description. Sibling context shows operations like 'create_block', 'create_page', and 'move_block' are present on the same server, indicating this tool likely creates or modifies data within a Logseq knowledge graph.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

insert_block Rate-limited

insert_block 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": {
    "insert_block": {
      "limits": [
        {
          "counter": "insert_block_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 Logseq MCP Tools, so you can run agents against it safely.

FAQ

Questions about insert_block

What does the insert_block tool do? +

insert_block. It is categorised as a Write tool in the Logseq MCP Tools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on insert_block? +

Register the Logseq MCP Tools MCP server in PolicyLayer and add a rule for insert_block: 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 Logseq MCP Tools. Nothing to install.

What risk level is insert_block? +

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

Can I rate-limit insert_block? +

Yes. Add a rate_limit block to the insert_block 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 insert_block completely? +

Set action: deny in the PolicyLayer policy for insert_block. 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 insert_block? +

insert_block is provided by the Logseq MCP Tools MCP server (mikeysrecipes/logseq-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.