catmull_rom
Evaluate a Catmull-Rom spline through control points at given parameter values.
This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/catmull-rom.md
What catmull_rom does on UnClick
AI agents call catmull_rom to retrieve information from UnClick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
alpha | number | — | Alpha parameter (0=uniform, 0.5=centripetal, 1=chordal; default 0.5) |
points | array | Yes | Control points as [x,y] pairs (min 4) |
t_values | array | Yes | Parameter values 0-1 to evaluate |
Parameters from the server's own tool schema.
Why catmull_rom is rated Low
Catmull-Rom spline evaluation is a read-only mathematical operation. It takes control points and parameter values as input and returns interpolated curve values. There are no side effects, no data modification, no code execution on external systems, no deletion, and no financial transactions. This is purely computational with no ability to cause harm through misuse.
From the tool's definition Tool description states "Evaluate a Catmull-Rom spline through control points at given parameter values." This is a mathematical computation that retrieves or computes interpolated values based on input parameters without modifying any data or triggering…
Attacks that exploit this kind of access
The rule that runs catmull_rom safely
PolicyLayer is an MCP gateway: it sits between your AI agents and UnClick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For catmull_rom, this is the rule to start with:
catmull_rom 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 UnClick, apply this rule, and every catmull_rom call is checked against it from then on.
Questions about catmull_rom
Evaluate a Catmull-Rom spline through control points at given parameter values. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
catmull_rom accepts 3 parameters: alpha, points, t_values. Required: points, t_values. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for catmull_rom: 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 UnClick. Nothing to install.
catmull_rom 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 catmull_rom 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 catmull_rom. 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.
catmull_rom is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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