wasm_agent_create
Create a sandboxed WASM agent with virtual filesystem (no OS access). Optionally use a gallery template. Use when native Task is wrong because the workload needs sandboxed isolation — untrusted code execution, browser-side run, deterministic replay. Pair with wasm_gallery_search to find a publish...
This record as markdown: /tools/ruflo/wasm-agent-create.md
What wasm_agent_create does on Ruflo
AI agents invoke wasm_agent_create to trigger actions in Ruflo. 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 wasm_agent_create is rated High
This tool creates and runs WASM agents capable of executing untrusted code in a sandboxed environment. While sandboxed, it still executes arbitrary code with a virtual filesystem, which qualifies as Execute. The ability to run untrusted code at scale within a multi-agent swarm harness represents a high blast radius if misused — e.g., spawning malicious agents or abusing the sandboxed environment.
From the tool's definition Create a sandboxed WASM agent with virtual filesystem... untrusted code execution, browser-side run, deterministic replay
Attacks that exploit this kind of access
The rule that runs wasm_agent_create safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Ruflo, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For wasm_agent_create, this is the rule to start with:
wasm_agent_create 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 Ruflo, apply this rule, and every wasm_agent_create call is checked against it from then on.
Questions about wasm_agent_create
Create a sandboxed WASM agent with virtual filesystem (no OS access). Optionally use a gallery template. Use when native Task is wrong because the workload needs sandboxed isolation — untrusted code execution, browser-side run, deterministic replay. Pair with wasm_gallery_search to find a published agent, or wasm_agent_create to scaffold a fresh one. For trusted in-process work, native Task is fine. It is categorised as a Execute tool in the Ruflo MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Ruflo MCP server in PolicyLayer and add a rule for wasm_agent_create: 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 Ruflo. Nothing to install.
wasm_agent_create 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 wasm_agent_create 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 wasm_agent_create. 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.
wasm_agent_create is provided by the Ruflo MCP server (ruvnet/ruflo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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