# Broken link checker

- Human page: https://happytails.ai/en/marketing-tools/broken-link-checker/
- Markdown: https://happytails.ai/en/marketing-tools/broken-link-checker.md
- Structured JSON: https://happytails.ai/agents/en/marketing-tools/broken-link-checker/index.json
- Visibility: public

## Tool capabilities

| Property | Value |
| --- | --- |
| Tool ID | `broken-link-checker` |
| Category | marketing-tools |
| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |
| Browser execution | Use the visible action or interactive controls. |
| Browser processing | Server required |
| HTTP API | /api/v1/tools/broken-link-checker/run |
| Browser-agent interface | run_current_tool |

### Implementation notes

Uses the local diagnostic server to contact the supplied public host or DNS/RDAP provider. Only public internet addresses are permitted; requests time out and redirects are bounded.

### Inputs and settings

Text input: Website URL.

Example or placeholder shown in the interface (not a validated fixture):

```text
https://happytails.ai
```

Enter one complete HTTP or HTTPS URL. Only public addresses and ports 80 or 443 are supported.

No additional settings are declared for this tool.

### HTTP contract

API calls process supplied data on the server. The website origin is `https://happytails.ai`. Server API hosting is not connected on the public website yet. Use your local server origin to test these requests.

```http
POST https://happytails.ai/api/v1/tools/broken-link-checker/run
Content-Type: application/json
```

[Detailed operation reference](https://happytails.ai/en/api/tools/broken-link-checker.md) · [Shared API guide](https://happytails.ai/en/api.md)

#### Limits

| Limit | Value |
| --- | --- |
| request_bytes | 8388608 |
| input_characters | 1000000 |
| files_bytes | 5242880 |
| max_files | 0 |
| timeout_seconds | Operation-specific network bounds |

#### Complete input schema

```json
{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "input": {
      "type": "string",
      "maxLength": 1000000,
      "default": "",
      "description": "Plain text input. File tools use files instead unless otherwise documented."
    },
    "options": {
      "type": "object",
      "additionalProperties": false,
      "properties": {}
    }
  }
}
```

#### Complete output schema

```json
{
  "type": "object",
  "required": [
    "tool",
    "result"
  ],
  "properties": {
    "tool": {
      "type": "string"
    },
    "result": {
      "type": "object",
      "required": [
        "text",
        "files"
      ],
      "properties": {
        "text": {
          "type": [
            "string",
            "null"
          ]
        },
        "data": {
          "description": "Parsed JSON when the textual result is JSON."
        },
        "name": {
          "type": "string"
        },
        "mime": {
          "type": "string"
        },
        "files": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "name",
              "mime",
              "bytes",
              "base64"
            ],
            "properties": {
              "name": {
                "type": "string"
              },
              "mime": {
                "type": "string"
              },
              "bytes": {
                "type": "integer"
              },
              "base64": {
                "type": "string",
                "contentEncoding": "base64"
              }
            }
          }
        }
      }
    }
  }
}
```

#### Error and retry handling

Failures return a non-200 status and `error.code` plus `error.message`. Correct invalid input before retrying; retry server-busy responses with bounded backoff. Returned files contain Base64 data, not persistent download URLs. Decode and inspect the output before treating conversion as successful. See the shared API guide for the complete status and timeout rules.

### Browser-agent workflow

1. Open the human page in a browser that supports WebMCP.
2. Discover the interface exposed by that page; use its actual schema.
3. Select files on the page first when the tool requires files.
4. Call `run_current_tool` with valid input and settings.
5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.

Calls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.

### Planning specification

Bounded scan, distinguish transient errors from broken links, protect private networks.

This describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.

### Complete machine-readable capability record

```json
{
  "id": "broken-link-checker",
  "category": "marketing-tools",
  "built": true,
  "requirements": "Bounded scan, distinguish transient errors from broken links, protect private networks.",
  "implementation": {
    "fields": [],
    "processing": "Server required",
    "note": "Uses the local diagnostic server to contact the supplied public host or DNS/RDAP provider. Only public internet addresses are permitted; requests time out and redirects are bounded.",
    "experience": {
      "automatic": false,
      "single": true,
      "label": "Website URL",
      "placeholder": "https://happytails.ai",
      "help": "Enter one complete HTTP or HTTPS URL. Only public addresses and ports 80 or 443 are supported.",
      "action": "Check URL"
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "POST /api/v1/tools/broken-link-checker/run",
  "api": {
    "id": "broken-link-checker",
    "name": "Broken link checker",
    "category": "marketing-tools",
    "description": "Bounded scan, distinguish transient errors from broken links, protect private networks.",
    "notes": "Uses the local diagnostic server to contact the supplied public host or DNS/RDAP provider. Only public internet addresses are permitted; requests time out and redirects are bounded.",
    "human_path": "/en/marketing-tools/broken-link-checker/",
    "method": "POST",
    "endpoint": "/api/v1/tools/broken-link-checker/run",
    "schema_url": "/api/v1/tools/broken-link-checker",
    "input_schema": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "input": {
          "type": "string",
          "maxLength": 1000000,
          "default": "",
          "description": "Plain text input. File tools use files instead unless otherwise documented."
        },
        "options": {
          "type": "object",
          "additionalProperties": false,
          "properties": {}
        }
      }
    },
    "output_schema": {
      "type": "object",
      "required": [
        "tool",
        "result"
      ],
      "properties": {
        "tool": {
          "type": "string"
        },
        "result": {
          "type": "object",
          "required": [
            "text",
            "files"
          ],
          "properties": {
            "text": {
              "type": [
                "string",
                "null"
              ]
            },
            "data": {
              "description": "Parsed JSON when the textual result is JSON."
            },
            "name": {
              "type": "string"
            },
            "mime": {
              "type": "string"
            },
            "files": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "name",
                  "mime",
                  "bytes",
                  "base64"
                ],
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "mime": {
                    "type": "string"
                  },
                  "bytes": {
                    "type": "integer"
                  },
                  "base64": {
                    "type": "string",
                    "contentEncoding": "base64"
                  }
                }
              }
            }
          }
        }
      }
    },
    "processing": "Server; contacts public network services",
    "limits": {
      "request_bytes": 8388608,
      "input_characters": 1000000,
      "files_bytes": 5242880,
      "max_files": 0,
      "timeout_seconds": null
    }
  },
  "agent_processing": "Server; contacts public network services",
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}
```

## Page guide

Bounded scan, distinguish transient errors from broken links, protect private networks..

## Useful next steps

- [Sitemap generator](https://happytails.ai/en/marketing-tools/sitemap-generator/): Bounded public-site crawling, canonical filtering and valid XML. ([Markdown](https://happytails.ai/en/marketing-tools/sitemap-generator.md))

## How to use Broken link checker

1. Enter a complete website URL in the input field.
2. Review the settings, then choose Check URL.
3. Review the result, then use Copy result or a download link when available.

## Working with broken link checker

Marketing utilities help prepare links, metadata and tracking inputs. Consistent names and clean URLs make reports easier to interpret, especially when several people contribute to the same campaign.

## Common questions

### Do tracking parameters change the destination content?

Usually they supply additional information to the receiving site, but the site decides how to use them. Verify the final URL instead of assuming every parameter is ignored by the page.

### Can a preview guarantee how a platform will display a link?

No. Platforms can cache previews and apply their own rules. A preview is a useful check, but the receiving platform remains the final reference.

Continue your workflow: [Sitemap generator](https://happytails.ai/en/marketing-tools/sitemap-generator/).