AI agents call get_api_endpoint_schema 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 is a Read operation: it retrieves schema information about API endpoints for reference purposes. No side effects, data modification, code execution, or destructive operations occur. The sibling tools suggest this server handles payments and financial operations, but this specific tool merely documents endpoints rather than invoking them.
From the tool's definition Tool name 'get_api_endpoint_schema' and description indicate it 'Get[s] the schema for an endpoint' — a retrieval operation that queries API metadata without modifying, executing, or deleting data.
Attacks that exploit this kind of access
Get the schema for an endpoint in the Zbd Payments TypeScript API. You can use the schema returned by this tool to invoke an endpoint with the. 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 get_api_endpoint_schema: 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.
get_api_endpoint_schema 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 get_api_endpoint_schema 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 get_api_endpoint_schema. 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.
get_api_endpoint_schema 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.
get_api_endpoint_schema 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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