Medium Risk

create_document

Create a new document in the Chroma vector database

How to control create_document ↓

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

Medium Risk

This tool creates new documents in a vector database with persistent storage. It modifies state irreversibly (once created, the document exists) but is reversible via delete_document, distinguishing it from Destructive.

From the tool's definition Tool name 'create_document' and description 'Create a new document in the Chroma vector database' indicate it adds new data to persistent storage.

Documented attack patterns abuse exactly the kind of access create_document gives an agent:

PolicyLayer is an MCP gateway — it sits between your AI agents and Chroma MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_document:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_document": {
      "limits": [
        {
          "counter": "create_document_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

create_document 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.

  1. Create a free account and register Chroma MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

Free to start. No card required.

Go deeper

What does the create_document tool do? +

Create a new document in the Chroma vector database. It is categorised as a Write tool in the Chroma 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 create_document? +

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

What risk level is create_document? +

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

Can I rate-limit create_document? +

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

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

create_document is provided by the Chroma MCP Server MCP server (privetin/chroma). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Chroma MCP Server tool call.

Deterministic rules across all 6 Chroma MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

Free to start. No card required.

6 Chroma MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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