verse_build
Trigger Verse compilation and return build status with any errors.
This record as markdown: /tools/quangdang46-uefn-verse-mcp/verse-build.md
What verse_build does on Uefn
AI agents invoke verse_build to trigger actions in Uefn. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why verse_build is rated High
Verse is Unreal Editor for Fortnite's scripting language. Triggering compilation is an Execute action—it runs code (the Verse compiler) and has side effects that depend on what code is present in the editor. While compilation itself is not inherently destructive, it executes external operations and could expose vulnerabilities if an agent compiles malicious Verse code.
From the tool's definition Trigger Verse compilation and return build status with any errors. The word "trigger" indicates initiation of an external operation (Verse compiler), whose effects depend on the code being compiled.
Attacks that exploit this kind of access
The rule that runs verse_build safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Uefn, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For verse_build, this is the rule to start with:
verse_build stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Uefn, apply this rule, and every verse_build call is checked against it from then on.
Questions about verse_build
Trigger Verse compilation and return build status with any errors. It is categorised as a Execute tool in the Uefn MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Uefn MCP server in PolicyLayer and add a rule for verse_build: 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 Uefn. Nothing to install.
verse_build is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the verse_build 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 verse_build. 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.
verse_build is provided by the Uefn MCP server (quangdang46/uefn-verse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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