> **For AI agents:** this page is a focused, LLM-optimized view of a
> single Fiber AI operation. Before calling it, fetch the routing
> instructions at [`https://api.fiber.ai/llms.txt`](https://api.fiber.ai/llms.txt) and the full operation
> index at [`https://api.fiber.ai/ai-docs/index.md`](https://api.fiber.ai/ai-docs/index.md).

# domainLookupPolling

`POST /v1/domain-lookup/polling`

**Tags:** `AI research`

Poll Domain lookup

**Endpoint:** `https://api.fiber.ai/v1/domain-lookup/polling`

## Description

Poll for the results of a domain lookup task.

⚡ Rate limit: 120 requests per 1 minute

## Request body (JSON Schema)

```json
{
  "type": "object",
  "properties": {
    "apiKey": {
      "type": "string",
      "description": "Your Fiber API key"
    },
    "domainAgentRunId": {
      "type": "string",
      "description": "The ID of the domain agent run returned by the trigger endpoint."
    },
    "cursor": {
      "type": [
        "string",
        "null"
      ],
      "description": "The cursor from where to start fetching the next page of results. Provide the `nextCursor` from the previous response to continue from there."
    },
    "pageSize": {
      "type": "number",
      "minimum": 1,
      "maximum": 100,
      "default": 10,
      "description": "The number of results to fetch per page."
    }
  },
  "required": [
    "apiKey",
    "domainAgentRunId"
  ]
}
```

## Response — success (JSON Schema)

```json
{
  "type": "object",
  "properties": {
    "output": {
      "type": "object",
      "properties": {
        "status": {
          "type": "string",
          "enum": [
            "NOT_STARTED",
            "STARTED",
            "DONE",
            "FAILED"
          ]
        },
        "data": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "companyName": {
                "type": "string",
                "description": "The name of the company."
              },
              "bestDomain": {
                "type": [
                  "string",
                  "null"
                ],
                "description": "The best matching domain for the company. Null if no domain was found."
              },
              "emailDomains": {
                "type": [
                  "array",
                  "null"
                ],
                "items": {
                  "type": "object",
                  "properties": {
                    "emailDomain": {
                      "type": [
                        "string",
                        "null"
                      ],
                      "description": "The email domain found for the company. Personal email domains are excluded."
                    },
                    "confidence": {
                      "type": [
                        "number",
                        "null"
                      ],
                      "minimum": 0,
                      "maximum": 10,
                      "description": "The confidence score for the email domain found (1-10, where 10 is most confident)."
                    },
                    "rationale": {
                      "type": [
                        "string",
                        "null"
                      ],
                      "description": "The rationale for the email domain selection."
                    }
                  }
                },
                "description": "The email domains of the company."
              },
              "allDomains": {
                "type": [
                  "array",
                  "null"
                ],
                "items": {
                  "type": "string"
                },
                "description": "All found domains for the company."
              },
              "confidence": {
                "type": [
                  "integer",
                  "null"
                ],
                "minimum": 0,
                "maximum": 10,
                "description": "The confidence score between 0 and 10 denoting the match quality. Higher confidence score means the company has more matching parameters."
              },
              "rationale": {
                "type": "string",
                "description": "The reasoning for why the agent chose the given company."
              }
            },
            "required": [
              "companyName",
              "rationale"
            ]
          },
          "description": "The list of companies found along with their rationale and confidence scores."
        },
        "nextCursor": {
          "type": [
            "string",
            "null"
          ],
          "description": "The pagination cursor for the next page of results. Null if there are no more results."
        },
        "hasMore": {
          "type": "boolean",
          "description": "Whether there are more results to fetch."
        }
      },
      "required": [
        "status",
        "data",
        "hasMore"
      ]
    },
    "chargeInfo": {
      "oneOf": [
        {
          "type": "object",
          "properties": {
            "method": {
              "type": "string",
              "enum": [
                "charged-now"
              ]
            },
            "creditsCharged": {
              "type": "number"
            },
            "lowCreditAlert": {
              "type": [
                "object",
                "null"
              ],
              "properties": {
                "getMoreCreditsUrl": {
                  "type": "string",
                  "format": "uri",
                  "description": "URL to top up credits or restart billing cycle to get fresh credits."
                },
                "message": {
                  "type": "string",
                  "description": "Human-readable credits warning."
                },
                "availableCredits": {
                  "type": "number",
                  "description": "Number of credits remaining in the current billing period."
                }
              },
              "required": [
                "getMoreCreditsUrl",
                "message",
                "availableCredits"
              ],
              "description": "Contains a link to get more credits, a warning message, and the remaining credit count."
            }
          },
          "required": [
            "method",
            "creditsCharged"
          ],
          "description": "Credits were charged immediately for this operation"
        },
        {
          "type": "object",
          "properties": {
            "method": {
              "type": "string",
              "enum": [
                "charging-later"
              ]
            },
            "message": {
              "type": "string"
            },
            "lowCreditAlert": {
              "type": [
                "object",
                "null"
              ],
              "properties": {
                "getMoreCreditsUrl": {
                  "type": "string",
                  "format": "uri",
                  "description": "URL to top up credits or restart billing cycle to get fresh credits."
                },
                "message": {
                  "type": "string",
                  "description": "Human-readable credits warning."
                },
                "availableCredits": {
                  "type": "number",
                  "description": "Number of credits remaining in the current billing period."
                }
              },
              "required": [
                "getMoreCreditsUrl",
                "message",
                "availableCredits"
              ],
              "description": "Contains a link to get more credits, a warning message, and the remaining credit count."
            }
          },
          "required": [
            "method",
            "message"
          ],
          "description": "Credits will be charged after the operation completes"
        },
        {
          "type": "object",
          "properties": {
            "method": {
              "type": "string",
              "enum": [
                "charged-for-async-process"
              ]
            },
            "creditsCharged": {
              "type": "number"
            },
            "message": {
              "type": "string"
            },
            "lowCreditAlert": {
              "type": [
                "object",
                "null"
              ],
              "properties": {
                "getMoreCreditsUrl": {
                  "type": "string",
                  "format": "uri",
                  "description": "URL to top up credits or restart billing cycle to get fresh credits."
                },
                "message": {
                  "type": "string",
                  "description": "Human-readable credits warning."
                },
                "availableCredits": {
                  "type": "number",
                  "description": "Number of credits remaining in the current billing period."
                }
              },
              "required": [
                "getMoreCreditsUrl",
                "message",
                "availableCredits"
              ],
              "description": "Contains a link to get more credits, a warning message, and the remaining credit count."
            }
          },
          "required": [
            "method",
            "creditsCharged",
            "message"
          ],
          "description": "Credits that were charged for an asynchronous operation"
        },
        {
          "type": "object",
          "properties": {
            "method": {
              "type": "string",
              "enum": [
                "free"
              ]
            },
            "message": {
              "type": "string"
            },
            "lowCreditAlert": {
              "type": [
                "object",
                "null"
              ],
              "properties": {
                "getMoreCreditsUrl": {
                  "type": "string",
                  "format": "uri",
                  "description": "URL to top up credits or restart billing cycle to get fresh credits."
                },
                "message": {
                  "type": "string",
                  "description": "Human-readable credits warning."
                },
                "availableCredits": {
                  "type": "number",
                  "description": "Number of credits remaining in the current billing period."
                }
              },
              "required": [
                "getMoreCreditsUrl",
                "message",
                "availableCredits"
              ],
              "description": "Contains a link to get more credits, a warning message, and the remaining credit count."
            }
          },
          "required": [
            "method",
            "message"
          ],
          "description": "No credits were charged for this operation"
        },
        {
          "type": "object",
          "properties": {
            "method": {
              "type": "string",
              "enum": [
                "credits-refunded"
              ]
            },
            "creditsRefunded": {
              "type": "number"
            },
            "message": {
              "type": "string"
            },
            "lowCreditAlert": {
              "type": [
                "object",
                "null"
              ],
              "properties": {
                "getMoreCreditsUrl": {
                  "type": "string",
                  "format": "uri",
                  "description": "URL to top up credits or restart billing cycle to get fresh credits."
                },
                "message": {
                  "type": "string",
                  "description": "Human-readable credits warning."
                },
                "availableCredits": {
                  "type": "number",
                  "description": "Number of credits remaining in the current billing period."
                }
              },
              "required": [
                "getMoreCreditsUrl",
                "message",
                "availableCredits"
              ],
              "description": "Contains a link to get more credits, a warning message, and the remaining credit count."
            }
          },
          "required": [
            "method",
            "creditsRefunded",
            "message"
          ],
          "description": "Credits were refunded for this operation"
        }
      ]
    },
    "warnings": {
      "type": [
        "array",
        "null"
      ],
      "items": {
        "type": "object",
        "properties": {
          "field": {
            "type": "string",
            "description": "Full path to extraneous field (e.g., 'searchParams.ExtraField')"
          },
          "message": {
            "type": "string",
            "description": "Warning message"
          }
        },
        "required": [
          "field",
          "message"
        ]
      },
      "description": "Warnings about extraneous fields in request"
    },
    "advice": {
      "type": [
        "array",
        "null"
      ],
      "items": {
        "type": "string"
      },
      "description": "Tips, recommendations, and suggestions for using this API effectively."
    }
  },
  "required": [
    "output",
    "chargeInfo"
  ],
  "additionalProperties": false
}
```

---

Canonical JSON: [`https://api.fiber.ai/openapi.json`](https://api.fiber.ai/openapi.json)
Operation index: [`https://api.fiber.ai/ai-docs/index.md`](https://api.fiber.ai/ai-docs/index.md)