This record as markdown: /tools/io-github-dave-london-cargo/bundle-check.md
What bundle-check does on Cargo
AI agents call bundle-check to retrieve information from Cargo without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why bundle-check is rated Low
The tool appears to verify Gemfile integrity without modifying it, which is a read-only operation. Verification and checking operations are informational with no side effects. The incomplete description ('Verifies that the Gemfile') suggests a standard bundle check operation from Ruby/Bundler tooling, which audits dependencies without making changes.
From the tool's definition Tool name 'bundle-check' and description 'Verifies that the Gemfile' indicate a verification/checking operation that examines configuration without modifying it. The 'check' verb typically performs read-only inspection.
Attacks that exploit this kind of access
The rule that runs bundle-check safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Cargo, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For bundle-check, this is the rule to start with:
bundle-check is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Cargo, apply this rule, and every bundle-check call is checked against it from then on.
Questions about bundle-check
Verifies that the Gemfile. It is categorised as a Read tool in the Cargo MCP Server, which means it retrieves data without modifying state.
Register the Cargo MCP server in PolicyLayer and add a rule for bundle-check: 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 Cargo. Nothing to install.
bundle-check 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 bundle-check 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 bundle-check. 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.
bundle-check is provided by the Cargo 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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