Generate a pre-filled FAR01 annual return form for Gibraltar Companies House. Returns a ZIP containing the filled PDF and a signing guide.
Risk signalsHigh parameter count (74 properties)
Part of the Company Gibraltar server.
Free to start. No card required.
AI agents use annual_return to create or modify resources in Company Gibraltar. 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 annual_return 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 Company Gibraltar.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"annual_return": {
"limits": [
{
"counter": "annual_return_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Company Gibraltar policy for all 6 tools.
These attack patterns abuse exactly the kind of access annual_return 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.
Generate a pre-filled FAR01 annual return form for Gibraltar Companies House. Returns a ZIP containing the filled PDF and a signing guide.. It is categorised as a Write tool in the Company Gibraltar MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Company Gibraltar MCP server in PolicyLayer and add a rule for annual_return: 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 Company Gibraltar. Nothing to install.
annual_return 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 annual_return 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 annual_return. 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.
annual_return is provided by the Company Gibraltar MCP server (company-gibraltar-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Company Gibraltar tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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