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POST/api/v1/mcp/security

Evaluate risk for an MCP tool invocation

Evaluates a single MCP tool invocation against the default security gateway policy and returns the risk verdict. Requires an invocation object with server + toolName.

Authentication

Send Authorization: Bearer YOUR_API_KEY on every request. Generate API keys at /dashboard/api-keys.

Request body required

Example

{
  "invocation": {
    "id": "string",
    "server": "string",
    "toolName": "string",
    "arguments": {},
    "userId": "string",
    "agentId": "string"
  }
}
Schema
{
  "application/json": {
    "schema": {
      "type": "object",
      "required": [
        "invocation"
      ],
      "properties": {
        "invocation": {
          "type": "object",
          "required": [
            "server",
            "toolName"
          ],
          "properties": {
            "id": {
              "type": "string"
            },
            "server": {
              "type": "string"
            },
            "toolName": {
              "type": "string"
            },
            "arguments": {
              "type": "object"
            },
            "timestamp": {
              "oneOf": [
                {
                  "type": "string"
                },
                {
                  "type": "number"
                }
              ]
            },
            "userId": {
              "type": "string"
            },
            "agentId": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}

Response

200 example

{
  "success": true
}

All status codes

200Invocation risk evaluation.
400(no description)
401(no description)
429(no description)

Code samples

cURL

curl -X POST \
  https://evalguard.ai/api/v1/mcp/security \
  -H "Authorization: Bearer $EVALGUARD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "invocation": { "id": "string", "server": "string", "toolName": "string", "arguments": {}, "userId": "string", "agentId": "string" } }'

TypeScript

import { EvalGuard } from "@evalguard/sdk";

const client = new EvalGuard({ apiKey: process.env.EVALGUARD_API_KEY });

const response = await client.request({
  method: "POST",
  path: "/api/v1/mcp/security",
  body: {
    "invocation": {
      "id": "string",
      "server": "string",
      "toolName": "string",
      "arguments": {},
      "userId": "string",
      "agentId": "string"
    }
  },
});
console.log(response);

Python

from evalguard import EvalGuard
import os

client = EvalGuard(api_key=os.environ["EVALGUARD_API_KEY"])

response = client.request(
    method="POST",
    path="/api/v1/mcp/security",
    body={
    "invocation": {
        "id": "string",
        "server": "string",
        "toolName": "string",
        "arguments": {},
        "userId": "string",
        "agentId": "string"
    }
},
)
print(response)

Go

package main

import (
	"context"
	"fmt"
	"net/http"
	"os"
	"strings"
)

func main() {
	body := strings.NewReader(`{"invocation":{"id":"string","server":"string","toolName":"string","arguments":{},"userId":"string","agentId":"string"}}`)
	req, _ := http.NewRequestWithContext(context.Background(), "POST", "https://evalguard.ai/api/v1/mcp/security", body)
	req.Header.Set("Authorization", "Bearer "+os.Getenv("EVALGUARD_API_KEY"))
	req.Header.Set("Content-Type", "application/json")
	resp, err := http.DefaultClient.Do(req)
	if err != nil { panic(err) }
	defer resp.Body.Close()
	fmt.Println(resp.Status)
}

Errors

400401429

Other Security endpoints