prismic_add_media · Prismic Content MCP: Risk & Policy

WHAT IT DOES

What prismic_add_media does on Prismic Content MCP

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

WHY IT NEEDS A POLICY

Why prismic_add_media needs a policy

The tool adds (creates/uploads) media to Prismic's Asset API. This is a reversible write operation—media can be deleted or replaced—not a read-only query or irreversible destruction. The 'add' verb and media management context confirm it creates new asset entries. Confidence is moderate-high because the description is empty, but the name and server context provide clear semantic intent.

From the tool's definition Tool name 'prismic_add_media' indicates creating or uploading media assets. The server description mentions 'managing media assets' and 'secure write operations', confirming this is a write action.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

prismic_add_media Rate-limited

prismic_add_media 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": {
    "prismic_add_media": {
      "limits": [
        {
          "counter": "prismic_add_media_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 Prismic Content MCP, so you can run agents against it safely.

FAQ

Questions about prismic_add_media

What does the prismic_add_media tool do? +

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

How do I enforce a policy on prismic_add_media? +

Register the Prismic Content MCP server in PolicyLayer and add a rule for prismic_add_media: 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 Prismic Content MCP. Nothing to install.

What risk level is prismic_add_media? +

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

Can I rate-limit prismic_add_media? +

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

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

prismic_add_media is provided by the Prismic Content MCP server (rahulpowar/prismic-content-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.