update_page_tags · Fusebase MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_page_tags does on Fusebase MCP Server

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

WHY IT NEEDS A POLICY

Why update_page_tags needs a policy

This tool modifies page metadata (tags) in the Fusebase workspace. It is a Write operation because it changes existing data in a reversible manner—tags can be updated or removed again. While the modification is complete (replacing existing tags), it does not destroy data or create irreversible loss.

From the tool's definition "Set tags on a specific page, replacing any existing tags entirely" indicates modification of page metadata. The tool creates or updates tag associations, which is a reversible data modification operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_page_tags Rate-limited

update_page_tags 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": {
    "update_page_tags": {
      "limits": [
        {
          "counter": "update_page_tags_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 Fusebase MCP Server, so you can run agents against it safely.

FAQ

Questions about update_page_tags

What does the update_page_tags tool do? +

Set tags on a specific page, replacing any existing tags entirely. Pass an array of tag strings to apply. To remove all tags, pass an empty array. It is categorised as a Write tool in the Fusebase 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 update_page_tags? +

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

What risk level is update_page_tags? +

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

Can I rate-limit update_page_tags? +

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

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

update_page_tags is provided by the Fusebase MCP Server MCP server (ryan-haver/fusebase-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.