{ "title": "File hash", "human_url": "https://happytails.ai/en/developer-tools/file-hash/", "agent_url": "https://happytails.ai/agents/en/developer-tools/file-hash/", "language": "en", "markdown_url": "https://happytails.ai/en/developer-tools/file-hash.md", "content": "File hash\nSHA-256 digest and compare expected value.\nUseful next steps\nInspect file metadata\nInitially inspect supported image metadata only.\nExtract ZIP\nList before extracting, sanitize paths, limit expanded bytes and surface unsupported encryption.\nPassword generator\nCryptographic randomness, length and character controls.\nHow to use File hash\nChoose a file in a supported format.\nReview the settings, then choose Run File hash.\nReview the result, then use Copy result or a download link when available.\nWorking with file hash\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:\nInspect file metadata\n,\nExtract ZIP\n,\nPassword generator\n.", "content_format": "text/plain", "visibility": "public", "links": [ { "name": "Inspect file metadata Initially inspect supported image metadata only.", "url": "https://happytails.ai/en/privacy-tools/inspect-file-metadata/" }, { "name": "Extract ZIP List before extracting, sanitize paths, limit expanded bytes and surface unsupported encryption.", "url": "https://happytails.ai/en/archive-tools/extract-zip/" }, { "name": "Password generator Cryptographic randomness, length and character controls.", "url": "https://happytails.ai/en/privacy-tools/password-generator/" } ], "tool": { "id": "file-hash", "category": "developer-tools", "built": true, "requirements": "SHA-256 digest and compare expected value; do not equate a matching hash with a safe file.", "implementation": { "fields": [ { "key": "algorithm", "label": "Hash", "value": "SHA-256", "type": "select", "values": [ "SHA-256", "SHA-384", "SHA-512", "SHA-1" ] }, { "key": "expected", "label": "Expected hash (optional)", "value": "", "type": "text" } ], "files": true, "input": false, "experience": { "automatic": false, "single": false, "label": "Your text", "placeholder": "Type or paste your input…", "help": "Up to 1,000,000 characters. Review the settings before running.", "action": null }, "mode": "explicit", "interactive": false }, "execution": "POST /api/v1/tools/file-hash/run", "api": { "id": "file-hash", "name": "File hash", "category": "developer-tools", "description": "SHA-256 digest and compare expected value.", "notes": "", "human_path": "/en/developer-tools/file-hash/", "method": "POST", "endpoint": "/api/v1/tools/file-hash/run", "schema_url": "/api/v1/tools/file-hash", "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": { "algorithm": { "type": "string", "description": "Hash", "default": "SHA-256", "enum": [ "SHA-256", "SHA-384", "SHA-512", "SHA-1" ] }, "expected": { "type": "string", "description": "Expected hash (optional)", "default": "" } } }, "files": { "type": "array", "maxItems": 1, "items": { "type": "object", "required": [ "name", "base64" ], "additionalProperties": false, "properties": { "name": { "type": "string", "maxLength": 200, "description": "Filename only, no path." }, "mime": { "type": "string", "maxLength": 150 }, "bytes": { "type": "integer", "minimum": 0, "description": "Optional decoded byte count; must match content if supplied." }, "base64": { "type": "string", "contentEncoding": "base64", "description": "File bytes as padded base64. Use the tool-specific limits.files_bytes value for the total decoded input size." } } } } } }, "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": 1, "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": "# File hash\n\n- Human page: https://happytails.ai/en/developer-tools/file-hash/\n- Markdown: https://happytails.ai/en/developer-tools/file-hash.md\n- Structured JSON: https://happytails.ai/agents/en/developer-tools/file-hash/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `file-hash` |\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/file-hash/run |\n| Browser-agent interface | run_current_tool |\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\nAccepted browser files: `See implementation notes`. Choose one file.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `algorithm` | Hash | select | \"SHA-256\" | Allowed: SHA-256, SHA-384, SHA-512, SHA-1 |\n| `expected` | Expected hash (optional) | text | \"\" | |\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/file-hash/run\nContent-Type: application/json\n```\n\n[Detailed operation reference](https://happytails.ai/en/api/tools/file-hash.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 | 1 |\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 \"algorithm\": {\n \"type\": \"string\",\n \"description\": \"Hash\",\n \"default\": \"SHA-256\",\n \"enum\": [\n \"SHA-256\",\n \"SHA-384\",\n \"SHA-512\",\n \"SHA-1\"\n ]\n },\n \"expected\": {\n \"type\": \"string\",\n \"description\": \"Expected hash (optional)\",\n \"default\": \"\"\n }\n }\n },\n \"files\": {\n \"type\": \"array\",\n \"maxItems\": 1,\n \"items\": {\n \"type\": \"object\",\n \"required\": [\n \"name\",\n \"base64\"\n ],\n \"additionalProperties\": false,\n \"properties\": {\n \"name\": {\n \"type\": \"string\",\n \"maxLength\": 200,\n \"description\": \"Filename only, no path.\"\n },\n \"mime\": {\n \"type\": \"string\",\n \"maxLength\": 150\n },\n \"bytes\": {\n \"type\": \"integer\",\n \"minimum\": 0,\n \"description\": \"Optional decoded byte count; must match content if supplied.\"\n },\n \"base64\": {\n \"type\": \"string\",\n \"contentEncoding\": \"base64\",\n \"description\": \"File bytes as padded base64. Use the tool-specific limits.files_bytes value for the total decoded input size.\"\n }\n }\n }\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\nSHA-256 digest and compare expected value; do not equate a matching hash with a safe file.\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\": \"file-hash\",\n \"category\": \"developer-tools\",\n \"built\": true,\n \"requirements\": \"SHA-256 digest and compare expected value; do not equate a matching hash with a safe file.\",\n \"implementation\": {\n \"fields\": [\n {\n \"key\": \"algorithm\",\n \"label\": \"Hash\",\n \"value\": \"SHA-256\",\n \"type\": \"select\",\n \"values\": [\n \"SHA-256\",\n \"SHA-384\",\n \"SHA-512\",\n \"SHA-1\"\n ]\n },\n {\n \"key\": \"expected\",\n \"label\": \"Expected hash (optional)\",\n \"value\": \"\",\n \"type\": \"text\"\n }\n ],\n \"files\": true,\n \"input\": false,\n \"experience\": {\n \"automatic\": false,\n \"single\": false,\n \"label\": \"Your text\",\n \"placeholder\": \"Type or paste your input…\",\n \"help\": \"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/file-hash/run\",\n \"api\": {\n \"id\": \"file-hash\",\n \"name\": \"File hash\",\n \"category\": \"developer-tools\",\n \"description\": \"SHA-256 digest and compare expected value.\",\n \"notes\": \"\",\n \"human_path\": \"/en/developer-tools/file-hash/\",\n \"method\": \"POST\",\n \"endpoint\": \"/api/v1/tools/file-hash/run\",\n \"schema_url\": \"/api/v1/tools/file-hash\",\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 \"algorithm\": {\n \"type\": \"string\",\n \"description\": \"Hash\",\n \"default\": \"SHA-256\",\n \"enum\": [\n \"SHA-256\",\n \"SHA-384\",\n \"SHA-512\",\n \"SHA-1\"\n ]\n },\n \"expected\": {\n \"type\": \"string\",\n \"description\": \"Expected hash (optional)\",\n \"default\": \"\"\n }\n }\n },\n \"files\": {\n \"type\": \"array\",\n \"maxItems\": 1,\n \"items\": {\n \"type\": \"object\",\n \"required\": [\n \"name\",\n \"base64\"\n ],\n \"additionalProperties\": false,\n \"properties\": {\n \"name\": {\n \"type\": \"string\",\n \"maxLength\": 200,\n \"description\": \"Filename only, no path.\"\n },\n \"mime\": {\n \"type\": \"string\",\n \"maxLength\": 150\n },\n \"bytes\": {\n \"type\": \"integer\",\n \"minimum\": 0,\n \"description\": \"Optional decoded byte count; must match content if supplied.\"\n },\n \"base64\": {\n \"type\": \"string\",\n \"contentEncoding\": \"base64\",\n \"description\": \"File bytes as padded base64. Use the tool-specific limits.files_bytes value for the total decoded input size.\"\n }\n }\n }\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\": 1,\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\nSHA-256 digest and compare expected value.\n\n## Useful next steps\n\n- [Inspect file metadata](https://happytails.ai/en/privacy-tools/inspect-file-metadata/): Initially inspect supported image metadata only. ([Markdown](https://happytails.ai/en/privacy-tools/inspect-file-metadata.md))\n\n- [Extract ZIP](https://happytails.ai/en/archive-tools/extract-zip/): List before extracting, sanitize paths, limit expanded bytes and surface unsupported encryption. ([Markdown](https://happytails.ai/en/archive-tools/extract-zip.md))\n\n- [Password generator](https://happytails.ai/en/privacy-tools/password-generator/): Cryptographic randomness, length and character controls. ([Markdown](https://happytails.ai/en/privacy-tools/password-generator.md))\n\n## How to use File hash\n\n1. Choose a file in a supported format.\n2. Review the settings, then choose Run File hash.\n3. Review the result, then use Copy result or a download link when available.\n\n## Working with file hash\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: [Inspect file metadata](https://happytails.ai/en/privacy-tools/inspect-file-metadata/), [Extract ZIP](https://happytails.ai/en/archive-tools/extract-zip/), [Password generator](https://happytails.ai/en/privacy-tools/password-generator/).\n" }