Build an unsigned transaction to borrow from an Arcadia lending pool against account collateral. NOT needed for leveraged LP — write.account.add_liquidity handles borrowing internally when leverage > 0. Only works with margin accounts (created with a creditor/lending pool). Spot accounts (no cred...
Part of the Arcadia server.
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AI agents invoke write.account.borrow to trigger processes or run actions in Arcadia. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
write.account.borrow can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"write.account.borrow": {
"limits": [
{
"counter": "write.account.borrow_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full Arcadia policy for all 38 tools.
These attack patterns abuse exactly the kind of access write.account.borrow gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Build an unsigned transaction to borrow from an Arcadia lending pool against account collateral. NOT needed for leveraged LP — write.account.add_liquidity handles borrowing internally when leverage > 0. Only works with margin accounts (created with a creditor/lending pool). Spot accounts (no creditor) cannot borrow — the tool will validate this and reject. Before borrowing, verify the account has positive free margin via read.account.info: collateral_value must exceed used_margin.. It is categorised as a Execute tool in the Arcadia MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Arcadia MCP server in PolicyLayer and add a rule for write.account.borrow: 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 Arcadia. Nothing to install.
write.account.borrow is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the write.account.borrow 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 write.account.borrow. 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.
write.account.borrow is provided by the Arcadia MCP server (arcadia-finance/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 38 Arcadia tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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