Discover the JSON field names emitted in structured logs: samples logs (optionally filtered), parses the JSON
AI agents call describe_log_fields to retrieve information from Dynatrace SaaS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
describe_log_fields purely retrieves and analyzes metadata about log structure. It reads/queries logs to extract field names without any side effects, modification, or execution of external operations. This is a classic Read category tool—similar to 'list' or 'fetch' operations. Severity is low because misuse would only expose log schema information, not sensitive data at scale or enable destructive actions.
From the tool's definition Tool description states it 'Discover[s]...field names' and 'samples logs...parses the JSON'—this is introspection and schema discovery with no data modification, deletion, or external execution.
Attacks that exploit this kind of access
Discover the JSON field names emitted in structured logs: samples logs (optionally filtered), parses the JSON. It is categorised as a Read tool in the Dynatrace SaaS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Dynatrace SaaS MCP Server MCP server in PolicyLayer and add a rule for describe_log_fields: 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 Dynatrace SaaS MCP Server. Nothing to install.
describe_log_fields 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 describe_log_fields 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 describe_log_fields. 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.
describe_log_fields is provided by the Dynatrace SaaS MCP Server MCP server (mnmozi/dynatrace-mcp-saas). 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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