Show current x-group/x-hospital values in use (user override vs defaults).
AI agents call show_header_context to retrieve information from OpenAPI REST MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays the current state of header context values. It performs a read-only operation that queries internal state without side effects, data modification, or external command execution. The severity is low because exposing current configuration values presents minimal risk even if accessed inappropriately by an AI agent.
From the tool's definition Tool description explicitly states 'Show current x-group/x-hospital values in use' — a query/retrieval operation with no modification, deletion, or execution of external commands.
Attacks that exploit this kind of access
Show current x-group/x-hospital values in use (user override vs defaults). It is categorised as a Read tool in the OpenAPI REST MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OpenAPI REST MCP Server MCP server in PolicyLayer and add a rule for show_header_context: 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 OpenAPI REST MCP Server. Nothing to install.
show_header_context 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 show_header_context 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 show_header_context. 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.
show_header_context is provided by the OpenAPI REST MCP Server MCP server (saranazeer27/mcp). 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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