Find and replace text in a Pages document (preserves formatting)
AI agents use pages_replace_text to create or update resources in Iwork — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Iwork environment.
The tool modifies document content by replacing text, which is a reversible write operation. While it changes data, the operation can be undone (typical document undo functionality), and no data is permanently destroyed. The blast radius is moderate—an AI agent could inadvertently replace important content throughout a document, but the changes are not irreversible.
From the tool's definition Tool name is 'pages_replace_text' and description states it 'Find and replace text in a Pages document (preserves formatting)'. This is a text modification operation.
Documented attack patterns abuse exactly the kind of access pages_replace_text gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Iwork, and nothing reaches the server without passing your rules. This is the rule we recommend for pages_replace_text:
{
"version": "1",
"default": "deny",
"tools": {
"pages_replace_text": {
"limits": [
{
"counter": "pages_replace_text_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}pages_replace_text 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.
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Find and replace text in a Pages document (preserves formatting). It is categorised as a Write tool in the Iwork MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Iwork MCP server in PolicyLayer and add a rule for pages_replace_text: 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 Iwork. Nothing to install.
pages_replace_text 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 pages_replace_text 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 pages_replace_text. 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.
pages_replace_text is provided by the Iwork MCP server (reichenbach/iwork_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Iwork, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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114 Iwork tools catalogued and risk-classified — across an index of 43,000+ MCP servers.