Used to look up all NFTs or Tokens by owner (32 byte base58 encoded address)
AI agents call getAssetsByOwner to retrieve information from Solana MCP Demo without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries blockchain state (asset information for a given owner address) with no side effects. It is a straightforward data retrieval operation similar to other sibling tools (getAsset, getAssets) that fetch information without modifying state. The blast radius of misuse is minimal - an attacker could enumerate assets but cannot drain funds, execute code, or modify data.
From the tool's definition Tool description states 'look up' NFTs or Tokens - a retrieval operation. The method name 'getAssetsByOwner' follows the 'get' convention for read-only queries. No mention of creating, modifying, deleting, or executing operations.
Attacks that exploit this kind of access
Used to look up all NFTs or Tokens by owner (32 byte base58 encoded address). It is categorised as a Read tool in the Solana MCP Demo MCP Server, which means it retrieves data without modifying state.
Register the Solana MCP Demo MCP server in PolicyLayer and add a rule for getAssetsByOwner: 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 Solana MCP Demo. Nothing to install.
getAssetsByOwner is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the getAssetsByOwner 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 getAssetsByOwner. 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.
getAssetsByOwner is provided by the Solana MCP Demo MCP server (metaplex-foundation/das-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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