MCP Tool Reference High Risk

call-actor

Call an Actor and get its run results

Part of the Apify MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

@apify/actors-mcp-server Execute

WHEN AI AGENTS USE THIS TOOL

AI agents invoke call-actor to trigger processes or run actions in Apify. 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.

WHY ENFORCE A POLICY ON CALL-ACTOR

call-actor 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.

RECOMMENDED POLICY

Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.

apify.yaml 
tools:
  call-actor:
    rules:
      - action: allow
        rate_limit:
          max: 10
          window: 60
        validate:
          required_args: true

See the full Apify policy for all 18 tools.

DETAILS

Tool Name

call-actor

Category

Execute

MCP Server

Apify MCP Server

Risk Level

High

MORE APIFY TOOLS

search-actors Read
Search for Actors in the Apify Store
fetch-actor-details Read
Retrieve detailed information about a specific Actor
get-actor-output Read
Retrieve the output from an Actor call
get-actor-run Read
Get detailed information about a specific Actor run
get-actor-run-list Read
Get a list of an Actor's runs filterable by status
get-actor-log Read
Retrieve the logs for a specific Actor run
get-dataset Read
Get metadata about a specific dataset
get-dataset-items Read
Retrieve items from a dataset with filtering

View all 18 tools →

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Deploy an Auth0 action
auth0_publish_form Auth0
Publish an Auth0 form
call_aws AWS
Execute authenticated AWS API calls

RELATED READING

FREQUENTLY ASKED QUESTIONS

What does the call-actor tool do?

Call an Actor and get its run results. It is categorised as a Execute tool in the Apify MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on call-actor?

Add a rule in your Intercept YAML policy under the tools section for call-actor. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Apify MCP server.

What risk level is call-actor?

call-actor is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit call-actor?

Yes. Add a rate_limit block to the call-actor 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.

How do I block call-actor completely?

Set action: deny in the Intercept policy for call-actor. 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 call-actor?

call-actor is provided by the Apify MCP server (@apify/actors-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

ENFORCE POLICIES ON APIFY

Open source. One binary. Zero dependencies.

VIEW ON GITHUB Full Apify policy →