Fulfill an order for an asset (either a listing or an offer).
AI agents use fulfill_opensea_order to commit financial operations through SEI MCP Server V2 — usually the final step of a payment, billing, or trading workflow. A call moves real money.
Fulfilling an OpenSea order constitutes a binding financial transaction: it transfers cryptocurrency/tokens in exchange for NFT assets. This is a financial commitment that cannot be undone once submitted to the blockchain, making it Financial category with critical severity due to potential for significant monetary loss if misused by an AI agent.
From the tool's definition 'Fulfill an order for an asset (either a listing or an offer)' — executing a marketplace order commits a financial transaction on-chain, transferring assets and/or funds irreversibly
Attacks that exploit this kind of access
Fulfill an order for an asset (either a listing or an offer). It is categorised as a Financial tool in the SEI MCP Server V2 MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the SEI MCP Server V2 MCP server in PolicyLayer and add a rule for fulfill_opensea_order: 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 SEI MCP Server V2. Nothing to install.
fulfill_opensea_order is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the fulfill_opensea_order 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 fulfill_opensea_order. 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.
fulfill_opensea_order is provided by the SEI MCP Server V2 MCP server (testinguser1111111/sei-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
fulfill_opensea_order is one line of SEI MCP Server V2's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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