Returns a list of the available cache engines and their versions. Parameters: engine (Optional[str]): The cache engine to return. Valid values: memcached | redis | valkey engine_version (Optional[str]): The cache engine version to return. Example: memcached 1.4.14, redis 6.x, val...
Single-target operation
Part of the AWS ElastiCache MCP Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call describe-cache-engine-versions 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 describe-cache-engine-versions 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:
describe-cache-engine-versions:
rules:
- action: allowSee the full AWS ElastiCache MCP Server policy for all 39 tools.
Agents calling read-class tools like describe-cache-engine-versions 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.
Returns a list of the available cache engines and their versions. Parameters: engine (Optional[str]): The cache engine to return. Valid values: memcached | redis | valkey engine_version (Optional[str]): The cache engine version to return. Example: memcached 1.4.14, redis 6.x, valkey 8.0 cache_parameter_group_family (Optional[str]): The name of a specific cache parameter group family. Valid values are: memcached1.4 | memcached1.5 | memcached1.6 | redis2.6 | redis2.8 | redis3.2 | redis4.0 | redis5.0 | redis6.x | redis7.x | valkey7.x | valkey8.x max_records (Optional[int]): The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved. marker (Optional[str]): An optional marker returned from a previous request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords. default_only (Optional[bool]): If true, specifies that only the default version of the specified engine or engine and major version combination is to be returned. Returns: Dict containing information about the cache engine versions, including: - CacheEngineVersions: List of cache engine versions - Marker: Pagination marker for next set of results. 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 describe-cache-engine-versions. 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.
describe-cache-engine-versions 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 describe-cache-engine-versions 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 describe-cache-engine-versions. 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.
describe-cache-engine-versions 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.