Add member to sorted set or increment its score.
AI agents use sorted_set_add_incr to create or update resources in Awslabs Amazon Sns Sqs — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Awslabs Amazon Sns Sqs environment.
The tool performs data modification (adding members or incrementing scores in a sorted set), which falls under the Write category. It is not destructive since the changes are reversible. While the tool name and description suggest this is a Redis-style sorted set operation (not directly SNS/SQS), the semantic action is clearly a write operation.
From the tool's definition Tool description states 'Add member to sorted set or increment its score' — this creates or modifies data in a sorted set structure. The operation is reversible (members can be removed, scores adjusted).
Documented attack patterns abuse exactly the kind of access sorted_set_add_incr gives an agent:
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 sorted_set_add_incr:
{
"version": "1",
"default": "deny",
"tools": {
"sorted_set_add_incr": {
"limits": [
{
"counter": "sorted_set_add_incr_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}sorted_set_add_incr 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.
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Add member to sorted set or increment its score. 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.
Register the Awslabs Amazon Sns Sqs MCP server in PolicyLayer and add a rule for sorted_set_add_incr: 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.
sorted_set_add_incr is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the sorted_set_add_incr 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.
Set action: deny in the PolicyLayer policy for sorted_set_add_incr. 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.
sorted_set_add_incr 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.
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.
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