cost-estimate

Server Kit luanpdd/kit-mcp

Category Execute

Risk class High

Parameters 00 required

WHAT IT DOES

What cost-estimate does on Kit

AI agents invoke cost-estimate to trigger actions in Kit. 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 IT NEEDS A POLICY

Why cost-estimate needs a policy

cost-estimate triggers real processes with real consequences. An agent gone sideways doesn't fire it once — it starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cost-estimate Rate-limited

cost-estimate 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "cost-estimate": {
      "limits": [
        {
          "counter": "cost-estimate_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Kit, so you can run agents against it safely.

FAQ

Questions about cost-estimate

What does the cost-estimate tool do? +

Estima custo USD de um prompt ANTES de mandar para Claude. Heurística chars/4 com range ±30% (sem tokenizer real na v1.37.0 — debt em SKILL.md). Retorna estimated_input_tokens, estimated_output_tokens, estimated_usd, estimated_usd_range:[low,high], disclaimer. Triggers:. It is categorised as a Execute tool in the Kit MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on cost-estimate? +

Register the Kit MCP server in PolicyLayer and add a rule for cost-estimate: 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 Kit. Nothing to install.

What risk level is cost-estimate? +

cost-estimate is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit cost-estimate? +

Yes. Add a rate_limit block to the cost-estimate 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.

How do I block cost-estimate completely? +

Set action: deny in the PolicyLayer policy for cost-estimate. 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 cost-estimate? +

cost-estimate is provided by the Kit MCP server (luanpdd/kit-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.