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 Finance server.
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AI agents use write_account_borrow to create or modify resources in Arcadia Finance. 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 write_account_borrow 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 Arcadia Finance.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"write_account_borrow": {
"limits": [
{
"counter": "write_account_borrow_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Arcadia Finance policy for all 40 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 write 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 Write tool in the Arcadia Finance MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Arcadia Finance 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 Finance. Nothing to install.
write_account_borrow 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 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 Finance MCP server (https://mcp.arcadia.finance/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 40 Arcadia Finance tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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