{
  "title": "JSON to typescript",
  "human_url": "https://happytails.ai/en/developer-tools/json-to-typescript/",
  "agent_url": "https://happytails.ai/agents/en/developer-tools/json-to-typescript/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/developer-tools/json-to-typescript.md",
  "content": "JSON to typescript\nInfer types from samples with optional properties and unions.\nUseful next steps\nJSON validator\nLine/column errors and clear syntax-versus-schema validation scope.\nJSON to schema\nChoose schema dialect.\nJSON to go\nStruct tags, names, nullable fields and number-type options.\nHow to use JSON to typescript\nEnter json in the input field.\nReview the settings, then choose Run JSON to typescript.\nReview the result, then use Copy result or a download link when available.\nWorking with json to typescript\nFormatting makes existing data or code easier to read. Validation checks whether it follows a syntax or schema. Conversion maps it into another representation. Choosing the right operation helps avoid treating a neatly formatted result as proof that the underlying data is correct.\nCommon questions\nDoes valid JSON mean the data is correct?\nSyntax validation only establishes that the text can be parsed as JSON. A schema can check required fields and types, but neither proves that an email address, price or external record is factually correct.\nIs decoding the same as decrypting or verifying?\nNo. Base64 and URL encoding are representations, not encryption. Reading a token payload does not verify its signature. Use the specific validation or verification process required by the system receiving the result.\nContinue your workflow:\nJSON validator\n,\nJSON to schema\n,\nJSON to go\n.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "JSON validator Line/column errors and clear syntax-versus-schema validation scope.",
      "url": "https://happytails.ai/en/developer-tools/json-validator/"
    },
    {
      "name": "JSON to schema Choose schema dialect.",
      "url": "https://happytails.ai/en/developer-tools/json-to-schema/"
    },
    {
      "name": "JSON to go Struct tags, names, nullable fields and number-type options.",
      "url": "https://happytails.ai/en/developer-tools/json-to-go/"
    }
  ],
  "tool": {
    "id": "json-to-typescript",
    "category": "developer-tools",
    "built": true,
    "requirements": "Infer types from samples with optional properties and unions; warn inferred schema is incomplete.",
    "implementation": {
      "fields": [],
      "experience": {
        "automatic": false,
        "single": false,
        "label": "JSON",
        "placeholder": "{\"name\":\"Ada\",\"count\":2}",
        "help": "Use double-quoted property names and valid JSON values. Up to 1,000,000 characters. Review the settings before running.",
        "action": null
      },
      "mode": "explicit",
      "interactive": false
    },
    "execution": "POST /api/v1/tools/json-to-typescript/run",
    "api": {
      "id": "json-to-typescript",
      "name": "JSON to typescript",
      "category": "developer-tools",
      "description": "Infer types from samples with optional properties and unions.",
      "notes": "",
      "human_path": "/en/developer-tools/json-to-typescript/",
      "method": "POST",
      "endpoint": "/api/v1/tools/json-to-typescript/run",
      "schema_url": "/api/v1/tools/json-to-typescript",
      "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; same transformation code as browser tools",
      "limits": {
        "request_bytes": 8388608,
        "input_characters": 1000000,
        "files_bytes": 5242880,
        "max_files": 0,
        "timeout_seconds": 12
      }
    },
    "agent_processing": "Server; same transformation code as browser tools",
    "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"
    }
  },
  "markdown": "# JSON to typescript\n\n- Human page: https://happytails.ai/en/developer-tools/json-to-typescript/\n- Markdown: https://happytails.ai/en/developer-tools/json-to-typescript.md\n- Structured JSON: https://happytails.ai/agents/en/developer-tools/json-to-typescript/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `json-to-typescript` |\n| Category | developer-tools |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Use the visible action or interactive controls. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | /api/v1/tools/json-to-typescript/run |\n| Browser-agent interface | run_current_tool |\n\n### Inputs and settings\n\nText input: JSON.\n\nExample or placeholder shown in the interface (not a validated fixture):\n\n```text\n{\"name\":\"Ada\",\"count\":2}\n```\n\nUse double-quoted property names and valid JSON values. Up to 1,000,000 characters. Review the settings before running.\n\nNo additional settings are declared for this tool.\n\n### HTTP contract\n\nAPI 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.\n\n```http\nPOST https://happytails.ai/api/v1/tools/json-to-typescript/run\nContent-Type: application/json\n```\n\n[Detailed operation reference](https://happytails.ai/en/api/tools/json-to-typescript.md) · [Shared API guide](https://happytails.ai/en/api.md)\n\n#### Limits\n\n| Limit | Value |\n| --- | --- |\n| request_bytes | 8388608 |\n| input_characters | 1000000 |\n| files_bytes | 5242880 |\n| max_files | 0 |\n| timeout_seconds | 12 |\n\n#### Complete input schema\n\n```json\n{\n  \"type\": \"object\",\n  \"additionalProperties\": false,\n  \"properties\": {\n    \"input\": {\n      \"type\": \"string\",\n      \"maxLength\": 1000000,\n      \"default\": \"\",\n      \"description\": \"Plain text input. File tools use files instead unless otherwise documented.\"\n    },\n    \"options\": {\n      \"type\": \"object\",\n      \"additionalProperties\": false,\n      \"properties\": {}\n    }\n  }\n}\n```\n\n#### Complete output schema\n\n```json\n{\n  \"type\": \"object\",\n  \"required\": [\n    \"tool\",\n    \"result\"\n  ],\n  \"properties\": {\n    \"tool\": {\n      \"type\": \"string\"\n    },\n    \"result\": {\n      \"type\": \"object\",\n      \"required\": [\n        \"text\",\n        \"files\"\n      ],\n      \"properties\": {\n        \"text\": {\n          \"type\": [\n            \"string\",\n            \"null\"\n          ]\n        },\n        \"data\": {\n          \"description\": \"Parsed JSON when the textual result is JSON.\"\n        },\n        \"name\": {\n          \"type\": \"string\"\n        },\n        \"mime\": {\n          \"type\": \"string\"\n        },\n        \"files\": {\n          \"type\": \"array\",\n          \"items\": {\n            \"type\": \"object\",\n            \"required\": [\n              \"name\",\n              \"mime\",\n              \"bytes\",\n              \"base64\"\n            ],\n            \"properties\": {\n              \"name\": {\n                \"type\": \"string\"\n              },\n              \"mime\": {\n                \"type\": \"string\"\n              },\n              \"bytes\": {\n                \"type\": \"integer\"\n              },\n              \"base64\": {\n                \"type\": \"string\",\n                \"contentEncoding\": \"base64\"\n              }\n            }\n          }\n        }\n      }\n    }\n  }\n}\n```\n\n#### Error and retry handling\n\nFailures 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.\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nInfer types from samples with optional properties and unions; warn inferred schema is incomplete.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"json-to-typescript\",\n  \"category\": \"developer-tools\",\n  \"built\": true,\n  \"requirements\": \"Infer types from samples with optional properties and unions; warn inferred schema is incomplete.\",\n  \"implementation\": {\n    \"fields\": [],\n    \"experience\": {\n      \"automatic\": false,\n      \"single\": false,\n      \"label\": \"JSON\",\n      \"placeholder\": \"{\\\"name\\\":\\\"Ada\\\",\\\"count\\\":2}\",\n      \"help\": \"Use double-quoted property names and valid JSON values. Up to 1,000,000 characters. Review the settings before running.\",\n      \"action\": null\n    },\n    \"mode\": \"explicit\",\n    \"interactive\": false\n  },\n  \"execution\": \"POST /api/v1/tools/json-to-typescript/run\",\n  \"api\": {\n    \"id\": \"json-to-typescript\",\n    \"name\": \"JSON to typescript\",\n    \"category\": \"developer-tools\",\n    \"description\": \"Infer types from samples with optional properties and unions.\",\n    \"notes\": \"\",\n    \"human_path\": \"/en/developer-tools/json-to-typescript/\",\n    \"method\": \"POST\",\n    \"endpoint\": \"/api/v1/tools/json-to-typescript/run\",\n    \"schema_url\": \"/api/v1/tools/json-to-typescript\",\n    \"input_schema\": {\n      \"type\": \"object\",\n      \"additionalProperties\": false,\n      \"properties\": {\n        \"input\": {\n          \"type\": \"string\",\n          \"maxLength\": 1000000,\n          \"default\": \"\",\n          \"description\": \"Plain text input. File tools use files instead unless otherwise documented.\"\n        },\n        \"options\": {\n          \"type\": \"object\",\n          \"additionalProperties\": false,\n          \"properties\": {}\n        }\n      }\n    },\n    \"output_schema\": {\n      \"type\": \"object\",\n      \"required\": [\n        \"tool\",\n        \"result\"\n      ],\n      \"properties\": {\n        \"tool\": {\n          \"type\": \"string\"\n        },\n        \"result\": {\n          \"type\": \"object\",\n          \"required\": [\n            \"text\",\n            \"files\"\n          ],\n          \"properties\": {\n            \"text\": {\n              \"type\": [\n                \"string\",\n                \"null\"\n              ]\n            },\n            \"data\": {\n              \"description\": \"Parsed JSON when the textual result is JSON.\"\n            },\n            \"name\": {\n              \"type\": \"string\"\n            },\n            \"mime\": {\n              \"type\": \"string\"\n            },\n            \"files\": {\n              \"type\": \"array\",\n              \"items\": {\n                \"type\": \"object\",\n                \"required\": [\n                  \"name\",\n                  \"mime\",\n                  \"bytes\",\n                  \"base64\"\n                ],\n                \"properties\": {\n                  \"name\": {\n                    \"type\": \"string\"\n                  },\n                  \"mime\": {\n                    \"type\": \"string\"\n                  },\n                  \"bytes\": {\n                    \"type\": \"integer\"\n                  },\n                  \"base64\": {\n                    \"type\": \"string\",\n                    \"contentEncoding\": \"base64\"\n                  }\n                }\n              }\n            }\n          }\n        }\n      }\n    },\n    \"processing\": \"Server; same transformation code as browser tools\",\n    \"limits\": {\n      \"request_bytes\": 8388608,\n      \"input_characters\": 1000000,\n      \"files_bytes\": 5242880,\n      \"max_files\": 0,\n      \"timeout_seconds\": 12\n    }\n  },\n  \"agent_processing\": \"Server; same transformation code as browser tools\",\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nInfer types from samples with optional properties and unions.\n\n## Useful next steps\n\n- [JSON validator](https://happytails.ai/en/developer-tools/json-validator/): Line/column errors and clear syntax-versus-schema validation scope. ([Markdown](https://happytails.ai/en/developer-tools/json-validator.md))\n\n- [JSON to schema](https://happytails.ai/en/developer-tools/json-to-schema/): Choose schema dialect. ([Markdown](https://happytails.ai/en/developer-tools/json-to-schema.md))\n\n- [JSON to go](https://happytails.ai/en/developer-tools/json-to-go/): Struct tags, names, nullable fields and number-type options. ([Markdown](https://happytails.ai/en/developer-tools/json-to-go.md))\n\n## How to use JSON to typescript\n\n1. Enter json in the input field.\n2. Review the settings, then choose Run JSON to typescript.\n3. Review the result, then use Copy result or a download link when available.\n\n## Working with json to typescript\n\nFormatting makes existing data or code easier to read. Validation checks whether it follows a syntax or schema. Conversion maps it into another representation. Choosing the right operation helps avoid treating a neatly formatted result as proof that the underlying data is correct.\n\n## Common questions\n\n### Does valid JSON mean the data is correct?\n\nSyntax validation only establishes that the text can be parsed as JSON. A schema can check required fields and types, but neither proves that an email address, price or external record is factually correct.\n\n### Is decoding the same as decrypting or verifying?\n\nNo. Base64 and URL encoding are representations, not encryption. Reading a token payload does not verify its signature. Use the specific validation or verification process required by the system receiving the result.\n\nContinue your workflow: [JSON validator](https://happytails.ai/en/developer-tools/json-validator/), [JSON to schema](https://happytails.ai/en/developer-tools/json-to-schema/), [JSON to go](https://happytails.ai/en/developer-tools/json-to-go/).\n"
}