config
Manages git configuration values. Supports get, set, list, and unset actions. Operates at local, global, system, or worktree scope.
This record as markdown: /tools/io-github-dave-london-npm/config.md
What config does on Npm
AI agents use config to create or update resources in Npm, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Npm environment.
Why config is rated Medium
This tool creates or modifies git configuration data reversibly. While 'get' and 'list' are read operations, the presence of 'set' and 'unset' actions makes this primarily a Write tool. The changes are reversible (configuration can be modified again), so it does not qualify as Destructive.
From the tool's definition Tool description states it 'Manages git configuration values' with actions including 'set' and 'unset', which modify configuration state reversibly.
Attacks that exploit this kind of access
The rule that runs config safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Npm, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For config, this is the rule to start with:
config stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Npm, apply this rule, and every config call is checked against it from then on.
Questions about config
Manages git configuration values. Supports get, set, list, and unset actions. Operates at local, global, system, or worktree scope. It is categorised as a Write tool in the Npm MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Npm MCP server in PolicyLayer and add a rule for config: 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 Npm. Nothing to install.
config is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the config 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 config. 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.
config is provided by the Npm MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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