set_text_style_range
Apply font, fontSize, fillColor, or strokeColor to a specific character range inside a text layer. Uses TextDocument.characterRange() available in AE CC 2019+. startChar and endChar are 0-based (endChar exclusive).
This record as markdown: /tools/synthetic-ai-ae-mcp/set-text-style-range.md
What set_text_style_range does on Ae
AI agents use set_text_style_range to create or update resources in Ae, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ae environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
font | string | — | |
save | boolean | — | |
endChar | number | Yes | 0-based end character index (exclusive). |
compName | string | Yes | |
fontSize | number | — | |
fillColor | array | — | RGB [r,g,b] 0-1 |
layerName | string | Yes | |
startChar | number | Yes | 0-based start character index. |
timeoutMs | number | — | |
projectPath | string | — | |
strokeColor | array | — | RGB [r,g,b] 0-1 |
strokeWidth | number | — |
Parameters from the server's own tool schema.
Why set_text_style_range is rated Medium
An AI agent can call set_text_style_range faster than any human can review: one bad instruction and it creates or modifies resources in Ae by the hundred, each call as confident as the last.
Risk signalsHigh parameter count (12 properties)
Attacks that exploit this kind of access
The rule that runs set_text_style_range 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 set_text_style_range, this is the rule to start with:
set_text_style_range stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Ae, apply this rule, and every set_text_style_range call is checked against it from then on.
Questions about set_text_style_range
Apply font, fontSize, fillColor, or strokeColor to a specific character range inside a text layer. Uses TextDocument.characterRange() available in AE CC 2019+. startChar and endChar are 0-based (endChar exclusive). It is categorised as a Write tool in the Ae MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
set_text_style_range accepts 12 parameters: font, save, endChar, compName, fontSize, fillColor, layerName, startChar, timeoutMs, projectPath, strokeColor, strokeWidth. Required: endChar, compName, layerName, startChar. The full parameter table on this page comes from the server's own tool schema.
Register the Ae MCP server in PolicyLayer and add a rule for set_text_style_range: 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.
set_text_style_range is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the set_text_style_range 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.
Set action: deny in the PolicyLayer policy for set_text_style_range. 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.
set_text_style_range 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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