cap_collection

THE RISK

Medium Risk

Why cap_collection needs a policy

This is a Write operation because it modifies collection configuration/properties in a reversible manner. It does not delete data (Destructive), execute arbitrary code (Execute), or involve financial transactions (Financial). Severity is medium due to potential operational impact if collection capacity is misconfigured, but the operation is reversible and does not cause data loss or irreversible state changes.

From the tool's definition Tool name 'cap_collection' with description 'Cap a collection' indicates a modification operation on a collection resource. Server context shows 'full CRUD operations on collections' capability.

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

POLICY

How to control cap_collection

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "cap_collection": {
      "limits": [
        {
          "counter": "cap_collection_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

cap_collection 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.

Create a free account and register Codehooks Io MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Codehooks Io MCP Server tools

Destructive drop_collection Delete a collection Destructive drop_index Remove field(s) from a query index Destructive file_delete Delete a file from server Destructive kv_del Delete key-value pair in a space. Destructive remove_schema Remove JSON schema from a collection Write uncap_collection Remove cap from a collection Write add_schema Add a JSON schema to a collection. Provide the schema content as a JSON string. Write create_collection Create a new collection

All 20 Codehooks Io MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about cap_collection

What does the cap_collection tool do? +

Cap a collection. It is categorised as a Write tool in the Codehooks Io 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 cap_collection? +

Register the Codehooks Io MCP Server MCP server in PolicyLayer and add a rule for cap_collection: 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 Codehooks Io MCP Server. Nothing to install.

What risk level is cap_collection? +

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

Can I rate-limit cap_collection? +

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

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

cap_collection is provided by the Codehooks Io MCP Server MCP server (restdb/codehooks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Codehooks Io MCP Server tool call.

Start from Codehooks Io MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →