AI agents use set_hwp_cell_text to create or update resources in Hwp — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hwp environment.
This tool creates or modifies data within an HWP document by replacing cell content. The operation is reversible (the previous content can be restored by replacing it again), making it a Write action rather than Destructive. While it modifies document structure, the scope is limited to a single cell.
From the tool's definition The tool description states 'Replace a single cell' which modifies content within a cell (write operation). The server description confirms it allows 'writing, and managing' HWP files and 'fill templates', supporting reversible modification behavior.
Documented attack patterns abuse exactly the kind of access set_hwp_cell_text gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Hwp, and nothing reaches the server without passing your rules. This is the rule we recommend for set_hwp_cell_text:
{
"version": "1",
"default": "deny",
"tools": {
"set_hwp_cell_text": {
"limits": [
{
"counter": "set_hwp_cell_text_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}set_hwp_cell_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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Replace a single cell. It is categorised as a Write tool in the Hwp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Hwp MCP server in PolicyLayer and add a rule for set_hwp_cell_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 Hwp. Nothing to install.
set_hwp_cell_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 set_hwp_cell_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 set_hwp_cell_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.
set_hwp_cell_text is provided by the Hwp MCP server (treesoop/hwp-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 31 Hwp tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
31 Hwp tools catalogued and risk-classified — across an index of 42,500+ MCP servers.