set_uniform

Part of the Threejs Devtools MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

// WHEN AI AGENTS USE THIS TOOL

AI agents use set_uniform to create or modify resources in Threejs Devtools. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

// WHY ENFORCE A POLICY ON SET_UNIFORM

Without a policy, an AI agent could call set_uniform repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Threejs Devtools.

// RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

three-js-devtools-mcp.yaml

tools:
  set_uniform:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Threejs Devtools policy for all 60 tools.

// DETAILS

Tool Name set_uniform

Category Write

MCP Server Threejs Devtools MCP Server

Risk Level Medium

// MORE THREEJS DEVTOOLS TOOLS

Destructive bounding_boxes Destructive highlight_object Destructive remove_helper Destructive toggle_overlay Destructive toggle_wireframe Execute performance_snapshot Execute run_js Write add_helper

View all 60 tools →

// WHAT CAN GO WRONG

Agents calling write-class tools like set_uniform have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER WRITE TOOLS ACROSS MCP SERVERS

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

AbraFlexi contact_create AbraFlexi contact_update AbraFlexi evidence_create AbraFlexi evidence_update AbraFlexi invoice_issued_update AbraFlexi invoice_received_create

// RELATED READING

// FAQ

What does the set_uniform tool do? +

Set a shader uniform value on a ShaderMaterial — runtime-only preview (lost on reload). ASK the user first: runtime preview or persistent code change? Runtime preview — lost on page reload. You MUST ask the user first: runtime preview only, or also update source code?. It is categorised as a Write tool in the Threejs Devtools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_uniform? +

Add a rule in your Intercept YAML policy under the tools section for set_uniform. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Threejs Devtools MCP server.

What risk level is set_uniform? +

set_uniform is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_uniform? +

Yes. Add a rate_limit block to the set_uniform rule in your Intercept 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.

How do I block set_uniform completely? +

Set action: deny in the Intercept policy for set_uniform. 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.

What MCP server provides set_uniform? +

set_uniform is provided by the Threejs Devtools MCP server (threejs-devtools-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

set_uniform

Enforce policies on Threejs Devtools