get_property_value

Read a layer property value by After Effects property path.

SERVERAe SOURCE@synthetic-ai/ae-mcp

Low RISK CLASS

Category Read

Parameters 53 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/synthetic-ai-ae-mcp/get-property-value.md

WHAT IT DOES

What get_property_value does on Ae

AI agents call get_property_value to retrieve information from Ae without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`compName`	string	Yes	Composition name.
`layerName`	string	Yes	Layer name.
`timeoutMs`	number	—	Process timeout in milliseconds. Defaults to 120000.
`projectPath`	string	—	Optional absolute path to an .aep file to open first.
`propertyPath`	array	Yes	Property path, preferably match names.

Parameters from the server's own tool schema.

RISK

Why get_property_value is rated Low

Even though get_property_value only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_property_value safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ae, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_property_value, this is the rule to start with:

get_property_value Allowed

get_property_value is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_property_value": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ae, apply this rule, and every get_property_value call is checked against it from then on.

FAQ

Questions about get_property_value

What does the get_property_value tool do? +

Read a layer property value by After Effects property path. It is categorised as a Read tool in the Ae MCP Server, which means it retrieves data without modifying state.

What parameters does get_property_value accept? +

get_property_value accepts 5 parameters: compName, layerName, timeoutMs, projectPath, propertyPath. Required: compName, layerName, propertyPath. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on get_property_value? +

Register the Ae MCP server in PolicyLayer and add a rule for get_property_value: 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 Ae. Nothing to install.

What risk level is get_property_value? +

get_property_value is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_property_value? +

Yes. Add a rate_limit block to the get_property_value 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.

How do I block get_property_value completely? +

Set action: deny in the PolicyLayer policy for get_property_value. 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 get_property_value? +

get_property_value is provided by the Ae MCP server (@synthetic-ai/ae-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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