AI agents call retrieve_wallet_data_oauth2 to retrieve information from Zbd without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns wallet data for an authenticated user. While it accesses sensitive financial information (wallet details), it performs only read operations without creating, modifying, or deleting data. The sensitivity elevates severity from low to medium due to the financial nature of wallet data, but the core operation is purely informational retrieval.
From the tool's definition Tool name contains 'retrieve' and description states 'Fetch wallet-related information about a logged-in ZBD User' — clear data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Fetch wallet-related information about a logged-in ZBD User. It is categorised as a Read tool in the Zbd MCP Server, which means it retrieves data without modifying state.
Register the Zbd MCP server in PolicyLayer and add a rule for retrieve_wallet_data_oauth2: 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 Zbd. Nothing to install.
retrieve_wallet_data_oauth2 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 retrieve_wallet_data_oauth2 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 retrieve_wallet_data_oauth2. 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.
retrieve_wallet_data_oauth2 is provided by the Zbd MCP server (zebedeeio/zbd-payments-typescript-sdk). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
retrieve_wallet_data_oauth2 is one line of Zbd'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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