add_to_seed · SEED MCP: Risk & Policy

WHAT IT DOES

What add_to_seed does on SEED MCP

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

WHY IT NEEDS A POLICY

Why add_to_seed needs a policy

The tool modifies SEED's internal knowledge/data store by adding to it. This falls under Write (creates/modifies data reversibly) rather than Read (passive retrieval) or more severe categories. While the blast radius is medium due to potential pollution of knowledge systems, it lacks the irreversibility of Destructive operations or the code execution risk of Execute operations.

From the tool's definition Tool name 'add_to_seed' and description 'Instructions for extending SEED's knowledge' indicate creation or modification of SEED's knowledge base. This is a write operation that alters system state but appears reversible.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_to_seed Rate-limited

add_to_seed 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": {
    "add_to_seed": {
      "limits": [
        {
          "counter": "add_to_seed_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 SEED MCP, so you can run agents against it safely.

FAQ

Questions about add_to_seed

What does the add_to_seed tool do? +

Instructions for extending SEED's knowledge. It is categorised as a Write tool in the SEED 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 add_to_seed? +

Register the SEED MCP server in PolicyLayer and add a rule for add_to_seed: 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 SEED MCP. Nothing to install.

What risk level is add_to_seed? +

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

Can I rate-limit add_to_seed? +

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

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

add_to_seed is provided by the SEED MCP server (sancovp/seed-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.