Repay debt to an Arcadia lending pool using tokens from the wallet (requires ERC20 allowance). To repay using account collateral instead (no wallet tokens needed), use write.account.deleverage. Check allowance first (read.wallet.allowances), then approve the pool if needed (write.wallet.approve)....
Part of the Arcadia server.
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AI agents use write.account.repay to create or modify resources in Arcadia. 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.repay 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.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"write.account.repay": {
"limits": [
{
"counter": "write.account.repay_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Arcadia policy for all 38 tools.
These attack patterns abuse exactly the kind of access write.account.repay 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.
Repay debt to an Arcadia lending pool using tokens from the wallet (requires ERC20 allowance). To repay using account collateral instead (no wallet tokens needed), use write.account.deleverage. Check allowance first (read.wallet.allowances), then approve the pool if needed (write.wallet.approve). Check outstanding debt with read.account.info.. It is categorised as a Write tool in the Arcadia MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Arcadia MCP server in PolicyLayer and add a rule for write.account.repay: 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.repay 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.repay 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.repay. 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.repay 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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