List your delivery streams. Args: limit: The maximum number of delivery streams to list delivery_stream_type: The delivery stream type. This can be one of the following values: DirectPut - Provider data is sent directly to the Firehose stream KinesisStreamAsSource - Data ...
Part of the AWS ElastiCache MCP Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call list-delivery-streams to retrieve information from AWS ElastiCache MCP Server without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though list-delivery-streams only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
tools:
list-delivery-streams:
rules:
- action: allowSee the full AWS ElastiCache MCP Server policy for all 39 tools.
Agents calling read-class tools like list-delivery-streams have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
List your delivery streams. Args: limit: The maximum number of delivery streams to list delivery_stream_type: The delivery stream type. This can be one of the following values: DirectPut - Provider data is sent directly to the Firehose stream KinesisStreamAsSource - Data is sourced from an existing Kinesis stream exclusive_start_delivery_stream_name: The name of the delivery stream to start the list after Returns: Dict containing the list of delivery streams and whether there are more streams available. It is categorised as a Read tool in the AWS ElastiCache MCP Server MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for list-delivery-streams. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the AWS ElastiCache MCP Server MCP server.
list-delivery-streams is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list-delivery-streams rule in your Intercept 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 Intercept policy for list-delivery-streams. 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.
list-delivery-streams is provided by the AWS ElastiCache MCP Server MCP server (awslabs.elasticache-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.