Write raw content to one cell, recalculate dependents, read a dependent range in the same tool call, and return persistence proof. Use this for stateless MCP clients such as hosted Open WebUI integrations.
Part of the Bilig WorkPaper server.
Free to start. No card required.
AI agents use set_cell_contents_and_readback to create or modify resources in Bilig WorkPaper. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call set_cell_contents_and_readback repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Bilig WorkPaper.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"set_cell_contents_and_readback": {
"limits": [
{
"counter": "set_cell_contents_and_readback_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Bilig WorkPaper policy for all 8 tools.
These attack patterns abuse exactly the kind of access set_cell_contents_and_readback gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Write raw content to one cell, recalculate dependents, read a dependent range in the same tool call, and return persistence proof. Use this for stateless MCP clients such as hosted Open WebUI integrations.. It is categorised as a Write tool in the Bilig WorkPaper MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Bilig WorkPaper MCP server in PolicyLayer and add a rule for set_cell_contents_and_readback: 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 Bilig WorkPaper. Nothing to install.
set_cell_contents_and_readback 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_cell_contents_and_readback 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_cell_contents_and_readback. 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_cell_contents_and_readback is provided by the Bilig WorkPaper MCP server (@bilig/workpaper). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 8 Bilig WorkPaper tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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