finch_create_ecr_repo

THE RISK

Medium Risk

Why finch_create_ecr_repo needs a policy

The tool creates a new AWS ECR repository, which is a reversible Write operation—repositories can be deleted if needed. This is not Execute (no arbitrary code execution), Destructive (creation is reversible), Financial (no monetary commitment), or Read. Medium severity because an AI agent creating repositories could accumulate costs or pollute infrastructure, but the impact is containable.

From the tool's definition Tool name 'finch_create_ecr_repo' contains 'create', indicating resource creation in AWS ECR (Elastic Container Registry). The description is empty, limiting certainty.

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

POLICY

How to control finch_create_ecr_repo

PolicyLayer is an MCP gateway — it sits between your AI agents and Awslabs Amazon Sns Sqs, and nothing reaches the server without passing your rules. This is the rule we recommend for finch_create_ecr_repo:

policy.json

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

finch_create_ecr_repo 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 Awslabs Amazon Sns Sqs — 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

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All 805 Awslabs Amazon Sns Sqs tools →

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Go deeper

Govern customer-ops agents → PII redaction, approval on external messages, and no-bulk-delete rules on the records agents change.
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 →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about finch_create_ecr_repo

What does the finch_create_ecr_repo tool do? +

finch_create_ecr_repo. It is categorised as a Write tool in the Awslabs Amazon Sns Sqs MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on finch_create_ecr_repo? +

Register the Awslabs Amazon Sns Sqs MCP server in PolicyLayer and add a rule for finch_create_ecr_repo: 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 Awslabs Amazon Sns Sqs. Nothing to install.

What risk level is finch_create_ecr_repo? +

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

Can I rate-limit finch_create_ecr_repo? +

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

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

finch_create_ecr_repo is provided by the Awslabs Amazon Sns Sqs MCP server (awslabs.amazon-sns-sqs-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 Awslabs Amazon Sns Sqs tool call.

Start from Awslabs Amazon Sns Sqs, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →