# approve_yei_token Approve the Yei Finance Pool contract to spend a specified amount of an ERC20 token. This is required before supplying or repaying. Agent View of the PolicyLayer registry record for `approve_yei_token`. HTML page: https://policylayer.com/tools/testinguser1111111-sei-mcp-server/approve-yei-token ## Facts - Tool: `approve_yei_token` - Server: SEI MCP Server V2 (`testinguser1111111/sei-mcp-server`) — https://policylayer.com/tools/testinguser1111111-sei-mcp-server.md - Homepage: https://github.com/testinguser1111111/sei-mcp-server - Risk category: Write (Medium risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "approve_yei_token", "arguments": {} } } ``` ## Why approve_yei_token is rated Medium This tool creates or modifies blockchain state (ERC20 token allowance) reversibly. It is not destructive since allowances can be modified or revoked. It is not financial in the strict sense of moving funds, though it is a prerequisite for financial operations. From the tool's own definition: "Tool description explicitly states 'Approve the Yei Finance Pool contract to spend a specified amount of an ERC20 token' — this is a write operation that modifies the token allowance state on-chain." ## Use case AI agents use approve_yei_token to create or update resources in SEI MCP Server V2, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SEI MCP Server V2 environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches SEI MCP Server V2: ```json { "version": "1", "default": "deny", "tools": { "approve_yei_token": { "limits": [ { "counter": "approve_yei_token_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on SEI MCP Server V2 (186) - `cancel_debridge_order` — Destructive — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/cancel-debridge-order.md - `cancel_opensea_order` — Destructive — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/cancel-opensea-order.md - `citrex_cancel_open_orders_for_product` — Destructive — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/citrex-cancel-open-orders-for-product.md - `citrex_cancel_order` — Destructive — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/citrex-cancel-order.md - `citrex_cancel_orders` — Destructive — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/citrex-cancel-orders.md - `remove_liquidity` — Destructive — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/remove-liquidity.md - `citrex_cancel_and_replace_order` — Execute — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/citrex-cancel-and-replace-order.md - `deploy_erc20` — Execute — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/deploy-erc20.md - `deploy_erc721` — Execute — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/deploy-erc721.md - `execute_flash_loan` — Execute — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/execute-flash-loan.md - `execute_multihop_swap` — Execute — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/execute-multihop-swap.md - `execute_simple_flash_loan` — Execute — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/execute-simple-flash-loan.md - `execute_swap` — Execute — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/execute-swap.md - `write_contract` — Execute — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/write-contract.md - `borrow_yei_asset` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/borrow-yei-asset.md - `buy_opensea_nft` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/buy-opensea-nft.md - `citrex_deposit` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/citrex-deposit.md - `citrex_place_orders` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/citrex-place-orders.md - `citrex_withdraw` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/citrex-withdraw.md - `create_and_execute_debridge_order` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/create-and-execute-debridge-order.md - `create_debridge_order` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/create-debridge-order.md - `create_opensea_collection_offer` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/create-opensea-collection-offer.md - `create_opensea_offer` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/create-opensea-offer.md - `delegate_credit_by_debt_token` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/delegate-credit-by-debt-token.md - `fulfill_opensea_order` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/fulfill-opensea-order.md - `repay_yei_asset` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/repay-yei-asset.md - `swap_on_symphony` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/swap-on-symphony.md - `swap_on_symphony_advanced` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/swap-on-symphony-advanced.md - `transfer_erc20` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/transfer-erc20.md - `transfer_sei` — Financial — https://policylayer.com/tools/testinguser1111111-sei-mcp-server/transfer-sei.md - …and 156 more: https://policylayer.com/tools/testinguser1111111-sei-mcp-server.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=testinguser1111111-sei-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/testinguser1111111-sei-mcp-server