Trim array at path to include only elements within range. Args: key: The name of the key path: The path in the JSON document start: Start index (inclusive) stop: Stop index (inclusive) Returns: New array length or error message
Accepts file system path (path)
Part of the Awslabs Valkey MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents invoke json_arrtrim to trigger processes or run actions in Awslabs Valkey. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
json_arrtrim can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
tools:
json_arrtrim:
rules:
- action: allow
rate_limit:
max: 10
window: 60
validate:
required_args: trueSee the full Awslabs Valkey policy for all 105 tools.
Agents calling execute-class tools like json_arrtrim have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
json_arrtrim is one of the high-risk operations in Awslabs Valkey. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.
Trim array at path to include only elements within range. Args: key: The name of the key path: The path in the JSON document start: Start index (inclusive) stop: Stop index (inclusive) Returns: New array length or error message. It is categorised as a Execute tool in the Awslabs Valkey MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Add a rule in your Intercept YAML policy under the tools section for json_arrtrim. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Awslabs Valkey MCP server.
json_arrtrim is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the json_arrtrim 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 json_arrtrim. 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.
json_arrtrim is provided by the Awslabs Valkey MCP server (awslabs.valkey-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.