agentscan (Tanod) x402 endpoint preflight

agentscan (Tanod) x402 endpoint preflight: a pay, caution or avoid verdict from the live 402 and the agent index (payTo change, price outlier, listing age, farm score). Use when an agent must decide whether to pay an x402 endpoint: live 402, payTo change, price outlier, listing age.

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

POST https://tanod.dev/v1/agents/preflight

Our checks, last 30 days

Example input (from the provider)

{
  "body": {
    "url": "https://api.example.com/v1/weather"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "policy": {
              "anyOf": [
                {
                  "additionalProperties": false,
                  "properties": {
                    "allow_caution": {
                      "default": true,
                      "description": "Default true; false fails a caution verdict. avoid always fails.",
                      "type": "boolean"
                    },
                    "max_median_ratio": {
                      "anyOf": [
                        {
                          "exclusiveMinimum": 0,
                          "maximum": 1000,
                          "type": "number"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Most the price may be as a multiple of the category median."
                    },
                    "max_price_usd": {
                      "anyOf": [
                        {
                          "type": "number"
                        },
                        {
                          "type": "string"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Most you will pay per call in USD (\"0.05\"), at most 100. Non-USDC options are unknown."
                    },
                    "max_timeout_seconds": {
                      "anyOf": [
                        {
                          "maximum": 604800,
                          "minimum": 1,
                          "type": "integer"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Longest maxTimeoutSeconds you accept."
                    },
                    "networks": {
                      "anyOf": [
                        {
                          "items": {
                            "type": "string"
                          },
                          "maxItems": 20,
                          "minItems": 1,
                          "type": "array"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Allowed networks: CAIP-2 ids or names (base, polygon, solana, bsc, arbitrum, ethereum, optimism, avalanche)."
                    },
                    "pay_to_allow": {
                      "anyOf": [
                        {
                          "items": {
                            "type": "string"
                          },
                          "maxItems": 50,
                          "minItems": 1,
                          "type": "array"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Allowed payTo addresses (EVM or Solana, at most 50)."
                    },
                    "pay_to_deny": {
                      "anyOf": [
                        {
                          "items": {
                            "type": "string"
                          },
                          "maxItems": 50,
                          "minItems": 1,
                          "type": "array"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Denied payTo addresses (at most 50)."
                    },
                    "require_listed": {
                      "anyOf": [
                        {
                          "type": "boolean"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "true: the URL must be in the agent index."
                    },
                    "strict": {
                      "default": false,
                      "description": "Default false; true fails clauses that cannot be judged.",
                      "type": "boolean"
                    }
                  },
                  "type": "object"
                },
                {
                  "type": "null"
                }
              ],
              "default": null,
              "description": "Optional spend policy. The answer then adds `policy` (result pass or fail, with failed, unknown and checked clauses), judged on the options already read. A bad policy is a 422, not charged."
            },
            "url": {
              "description": "The public https URL of the x402 endpoint an agent is about to pay, such as https://api.example.com/v1/weather. Host name only (no IP address), port 443, no user info. It is requested once without payment (GET, or POST when GET answers 404 or 405). A URL that is not public https, or a host that resolves to a private address, is a 422 and is not charged.",
              "maxLength": 2048,
              "minLength": 9,
              "type": "string"
            }
          },
          "required": [
            "url"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
  

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