{
  "x402Version": 2,
  "id": 36436,
  "slug": "36436",
  "resource": "https://wtsp.dev/v1/exists",
  "description": "Whether a number has a WhatsApp account, and nothing else: the cheapest way to clean a list before paying for profiles. /v1/profile gives the same answer plus the account's details. Query param: phone, with country code (e.g. +14155552671). Every answer is charged, “not on WhatsApp” included; a lookup WhatsApp does not answer is free.",
  "type": "http",
  "serviceName": "wtsp.dev",
  "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791646076/bazaar-icons/33de5a69167c2e98.png",
  "resourceType": "Identity & Enrichment",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x539d036a305F78388dcA5FC49c27f9e29b83D315",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "4000",
      "amountUsd": 0.004,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "properties": {
          "checkedAt": {
            "description": "When this answer was fetched from WhatsApp (ISO 8601).",
            "type": "string"
          },
          "hasWhatsApp": {
            "description": "Whether the number is a registered WhatsApp account. `false` is a definitive answer, not a failure.",
            "type": "boolean"
          },
          "phone": {
            "description": "The number looked up, in E.164.",
            "type": "string"
          }
        },
        "required": [
          "phone",
          "hasWhatsApp",
          "checkedAt"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "phone": "+14155552671"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "checkedAt": "2026-10-09T18:24:03.000Z",
            "hasWhatsApp": true,
            "phone": "+14155552671"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "phone": {
                    "description": "Phone number with its country code, e.g. +14155552671. The + is optional; spaces, dashes and a leading 00 are fine.",
                    "type": "string"
                  }
                },
                "required": [
                  "phone"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "checkedAt": {
                    "description": "When this answer was fetched from WhatsApp (ISO 8601).",
                    "type": "string"
                  },
                  "hasWhatsApp": {
                    "description": "Whether the number is a registered WhatsApp account. `false` is a definitive answer, not a failure.",
                    "type": "boolean"
                  },
                  "phone": {
                    "description": "The number looked up, in E.164.",
                    "type": "string"
                  }
                },
                "required": [
                  "phone",
                  "hasWhatsApp",
                  "checkedAt"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "whatsapp",
    "phone-lookup",
    "validation",
    "verification",
    "registration",
    "bazaar"
  ],
  "sourceHost": "wtsp.dev",
  "lastUpdated": "2026-10-10T15:27:55.934Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-10-10T15:27:55.555Z"
  },
  "metadata": {
    "serviceName": "wtsp.dev",
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791646076/bazaar-icons/33de5a69167c2e98.png",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "phone": "+14155552671"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "checkedAt": "2026-10-09T18:24:03.000Z",
              "hasWhatsApp": true,
              "phone": "+14155552671"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "phone": {
                      "description": "Phone number with its country code, e.g. +14155552671. The + is optional; spaces, dashes and a leading 00 are fine.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "phone"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "checkedAt": {
                      "description": "When this answer was fetched from WhatsApp (ISO 8601).",
                      "type": "string"
                    },
                    "hasWhatsApp": {
                      "description": "Whether the number is a registered WhatsApp account. `false` is a definitive answer, not a failure.",
                      "type": "boolean"
                    },
                    "phone": {
                      "description": "The number looked up, in E.164.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "phone",
                    "hasWhatsApp",
                    "checkedAt"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "wtsp.dev",
    "manifest_name": "wtsp.dev",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {
      "checkedAt": "string",
      "hasWhatsApp": true,
      "phone": "string"
    },
    "type": "string"
  }
}