Api Endpoint

tool-call-guard

Ask whether a tool call should run automatically, need human confirmation, or be denied, given the user's request - returns allow/ask/deny with a probability. Advisory only: like any LLM-based judge it is sensitive to prompt injection in the request or tool call, so the calling agent must keep the final decision, not delegate it outright. Powered by Jev (TypeSafe System One). $0.001 per call, no OpenRouter or TypeSafe account needed. Try GET /guard/sample.

Open interactive test console

Offering

Provider: x402.agentindex.world
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Security
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://x402.agentindex.world/guard
MIME type: application/json
First seen: 2026-10-16T01:50:38.788Z
Last seen: 2026-11-05T05:46:00.861Z
Tags: guardrail

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d"
  }
]

Observed health

Status: Reachable
Latest latency: 296 ms
Average latency: 762 ms
HTTP status: 405
Last checked: 2026-11-04T13:46:12.947Z
Reachability: 100% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "properties": {
        "user_request": {
          "type": "string",
          "description": "The user's original request, in their own words."
        },
        "tool_call": {
          "type": "object",
          "description": "The tool call an agent is about to make, e.g. {\"name\": ..., \"arguments\": {...}}."
        }
      },
      "required": [
        "user_request",
        "tool_call"
      ]
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "properties": {
            "tool_call": {
              "description": "The tool call an agent is about to make, e.g. {\"name\": ..., \"arguments\": {...}}.",
              "type": "object"
            },
            "user_request": {
              "description": "The user's original request, in their own words.",
              "type": "string"
            }
          },
          "required": [
            "user_request",
            "tool_call"
          ]
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "confidence": {
              "type": "number"
            },
            "decision": {
              "enum": [
                "allow",
                "ask",
                "deny"
              ],
              "type": "string"
            },
            "probabilities": {
              "description": "Probability for each of allow/ask/deny.",
              "type": "object"
            },
            "probability": {
              "description": "Probability of the returned decision.",
              "type": "number"
            },
            "x402_receipt": {
              "description": "Billing and provenance receipt for this call.",
              "type": "object"
            }
          },
          "required": [
            "decision",
            "probability",
            "probabilities"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}