AI agents call read_record_with_fields to retrieve information from UOFastMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves data from a U2 database record by reading specific fields. It performs a straightforward query operation without creating, modifying, deleting, or executing any operations.
From the tool's definition Tool name 'read_record_with_fields' and description 'Read specific DICT fields from a record' explicitly indicate retrieval of data. The phrase 'returns only the requested fields as a dictionary' confirms the operation is a query with no side effects.
Attacks that exploit this kind of access
Read specific DICT fields from a record using field names. This returns only the requested fields as a dictionary, making it easier to work with structured data. It is categorised as a Read tool in the UOFastMCP MCP Server, which means it retrieves data without modifying state.
Register the UOFast MCP server in PolicyLayer and add a rule for read_record_with_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 UOFastMCP. Nothing to install.
read_record_with_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 read_record_with_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 read_record_with_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.
read_record_with_fields is provided by the UOFast MCP server (rokipark/uofastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
read_record_with_fields is one line of UOFast'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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