annotate_node · Trailmark MCP Server MCP: Risk & Policy

WHAT IT DOES

What annotate_node does on Trailmark MCP Server

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

WHY IT NEEDS A POLICY

Why annotate_node needs a policy

This tool creates or modifies metadata (annotations) associated with code repository nodes. It is reversible (annotations can be cleared, as evidenced by the sibling tool 'clear_annotations'), making it Write rather than Destructive.

From the tool's definition Tool description states 'Attach an annotation to a graph node,' which is a reversible modification operation. The verb 'attach' indicates data creation/modification without permanent deletion. Annotations can typically be removed or updated.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

annotate_node Rate-limited

annotate_node 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": {
    "annotate_node": {
      "limits": [
        {
          "counter": "annotate_node_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 Trailmark MCP Server, so you can run agents against it safely.

FAQ

Questions about annotate_node

What does the annotate_node tool do? +

Attach an annotation to a graph node. It is categorised as a Write tool in the Trailmark 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 annotate_node? +

Register the Trailmark MCP Server MCP server in PolicyLayer and add a rule for annotate_node: 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 Trailmark MCP Server. Nothing to install.

What risk level is annotate_node? +

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

Can I rate-limit annotate_node? +

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

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

annotate_node is provided by the Trailmark MCP Server MCP server (parsiya/trailmark-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.