Look up a Kconfig symbol (CONFIG_*) in the nRF Connect SDK. Searches for the Kconfig definition of a symbol and returns the defining file with its description, type, defaults, and dependencies. Strips the CONFIG_ prefix automatically if present. Useful for understanding what a prj.conf option doe...
AI agents call nrf_kconfig to retrieve information from Nrf without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only information retrieval tool. It queries Kconfig symbols from the nRF Connect SDK documentation/source and returns their properties. No data is created, modified, deleted, or executed. The blast radius of misuse is minimal—an AI could at worst retrieve irrelevant configuration documentation, which poses no security or operational risk.
From the tool's definition Tool 'looks up', 'searches for', and 'returns' Kconfig symbol definitions and metadata. Description explicitly states it retrieves information (definition, description, type, defaults, dependencies) without modifying or executing anything.
Attacks that exploit this kind of access
Look up a Kconfig symbol (CONFIG_*) in the nRF Connect SDK. Searches for the Kconfig definition of a symbol and returns the defining file with its description, type, defaults, and dependencies. Strips the CONFIG_ prefix automatically if present. Useful for understanding what a prj.conf option does, its type, and where it. It is categorised as a Read tool in the Nrf MCP Server, which means it retrieves data without modifying state.
Register the Nrf MCP server in PolicyLayer and add a rule for nrf_kconfig: 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 Nrf. Nothing to install.
nrf_kconfig 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 nrf_kconfig 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 nrf_kconfig. 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.
nrf_kconfig is provided by the Nrf MCP server (pshanesmith/nrf-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.
Teams ship this data inside their own products. See what a licence covers →