# list_vaults

List all available ATV vaults. Returns vault metadata including address, chain, withdraw type, contract type, and supported deposit tokens with balances.

Agent View of the PolicyLayer registry record for `list_vaults`. HTML page: https://policylayer.com/tools/aarna-ai-atv/list-vaults

## Facts

- Tool: `list_vaults`
- Server: Atv (`aarna-ai/atv`) — https://policylayer.com/tools/aarna-ai-atv.md
- Homepage: https://github.com/aarna-ai/atv
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 2
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `chain` | string | no | Filter by chain name or ID (e.g. 'ethereum', 'base', '8453') |
| `userAddress` | string | no | EVM address to include token balances for each deposit token |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "list_vaults",
    "arguments": {}
  }
}
```

## Why list_vaults is rated Low

This tool queries and returns vault metadata without creating, modifying, deleting, or executing any operations. It is a simple data retrieval operation typical of Read category tools. The low severity reflects that listing public vault information poses minimal risk even if misused by an agent, as it only exposes metadata without enabling transactions or state changes.

From the tool's own definition: "Tool name 'list_vaults' and description 'List all available ATV vaults. Returns vault metadata' — purely retrieves and lists data with no side effects or modifications."

## Use case

AI agents call list_vaults to retrieve information from Atv without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Atv:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_vaults": {}
  }
}
```

## Other tools on Atv (18)

- `build_deposit_tx` — Execute — https://policylayer.com/tools/aarna-ai-atv/build-deposit-tx.md
- `build_queue_withdraw_tx` — Execute — https://policylayer.com/tools/aarna-ai-atv/build-queue-withdraw-tx.md
- `build_stake_tx` — Execute — https://policylayer.com/tools/aarna-ai-atv/build-stake-tx.md
- `build_unqueue_withdraw_tx` — Execute — https://policylayer.com/tools/aarna-ai-atv/build-unqueue-withdraw-tx.md
- `build_unstake_tx` — Execute — https://policylayer.com/tools/aarna-ai-atv/build-unstake-tx.md
- `build_redeem_withdraw_tx` — Financial — https://policylayer.com/tools/aarna-ai-atv/build-redeem-withdraw-tx.md
- `build_withdraw_tx` — Financial — https://policylayer.com/tools/aarna-ai-atv/build-withdraw-tx.md
- `get_deposit_status` — Read — https://policylayer.com/tools/aarna-ai-atv/get-deposit-status.md
- `get_historical_nav` — Read — https://policylayer.com/tools/aarna-ai-atv/get-historical-nav.md
- `get_queue_withdraw_status` — Read — https://policylayer.com/tools/aarna-ai-atv/get-queue-withdraw-status.md
- `get_total_tvl` — Read — https://policylayer.com/tools/aarna-ai-atv/get-total-tvl.md
- `get_user_investments` — Read — https://policylayer.com/tools/aarna-ai-atv/get-user-investments.md
- `get_vault` — Read — https://policylayer.com/tools/aarna-ai-atv/get-vault.md
- `get_vault_apy` — Read — https://policylayer.com/tools/aarna-ai-atv/get-vault-apy.md
- `get_vault_balance` — Read — https://policylayer.com/tools/aarna-ai-atv/get-vault-balance.md
- `get_vault_nav` — Read — https://policylayer.com/tools/aarna-ai-atv/get-vault-nav.md
- `get_vault_tvl` — Read — https://policylayer.com/tools/aarna-ai-atv/get-vault-tvl.md
- `get_withdraw_status` — Read — https://policylayer.com/tools/aarna-ai-atv/get-withdraw-status.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=aarna-ai-atv · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/aarna-ai-atv