This record as markdown: /tools/aarna-ai-atv/build-queue-withdraw-tx.md
What build_queue_withdraw_tx does on Atv
AI agents invoke build_queue_withdraw_tx to trigger actions in Atv. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
| Parameter | Type | Required | Description |
|---|---|---|---|
userAddress | string | — | EVM address of the withdrawer |
vaultAddress | string | — | Vault contract address |
tokensToWithdraw | string | — | Human-readable vault share amount to queue for withdrawal |
withdrawTokenAddress | string | — | Output token address to receive when the withdrawal is redeemed |
Parameters from the server's own tool schema.
Why build_queue_withdraw_tx is rated High
This tool builds and triggers a blockchain transaction to initiate a withdrawal from a yield vault on Ethereum/Base. While it doesn't immediately move funds (the redemption is delayed), it executes an on-chain operation that commits the user's vault position to a withdrawal queue — a state-changing, externally-executed action.
From the tool's definition Build the transaction step to initiate a queued (delayed) withdrawal from an ATV vault
Attacks that exploit this kind of access
The rule that runs build_queue_withdraw_tx safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Atv, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For build_queue_withdraw_tx, this is the rule to start with:
build_queue_withdraw_tx stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Atv, apply this rule, and every build_queue_withdraw_tx call is checked against it from then on.
Questions about build_queue_withdraw_tx
Build the transaction step to initiate a queued (delayed) withdrawal from an ATV vault. The withdrawal is not instant — it must be redeemed later once processed. It is categorised as a Execute tool in the Atv MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
build_queue_withdraw_tx accepts 4 parameters: userAddress, vaultAddress, tokensToWithdraw, withdrawTokenAddress. The full parameter table on this page comes from the server's own tool schema.
Register the Atv MCP server in PolicyLayer and add a rule for build_queue_withdraw_tx: 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 Atv. Nothing to install.
build_queue_withdraw_tx 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 build_queue_withdraw_tx 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 build_queue_withdraw_tx. 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.
build_queue_withdraw_tx is provided by the Atv MCP server (aarna-ai/atv). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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