{ "title": "Voice to text", "human_url": "https://happytails.ai/en/speech-tools/voice-to-text/", "agent_url": "https://happytails.ai/agents/en/speech-tools/voice-to-text/", "language": "en", "markdown_url": "https://happytails.ai/en/speech-tools/voice-to-text.md", "content": "Voice to text\nTurn an uploaded voice recording into a transcript.\nUseful next steps\nTranscript editor\nImport transcript JSON and local audio.\nRemove extra spaces\nTidy repeated spaces without losing line breaks.\nWord counter\nCount words, characters and lines as you type.\nHow to use Voice to text\nChoose a file in WAV, MP3, M4A, FLAC, MP4, MOV or WEBM.\nReview the settings, then choose Convert file.\nReview the result, then use Copy result or a download link when available.\nWhat to expect\nTurn an uploaded voice recording into a transcript. Runs with local model weights on this website’s server. No external AI API is used. Review the result for errors. Local Whisper tiny. Clips up to five minutes; review words and timing. Upload a voice recording; direct microphone capture is not yet included.", "content_format": "text/plain", "visibility": "public", "links": [ { "name": "Transcript editor Import transcript JSON and local audio.", "url": "https://happytails.ai/en/speech-tools/transcript-editor/" }, { "name": "Remove extra spaces Tidy repeated spaces without losing line breaks.", "url": "https://happytails.ai/en/text-tools/remove-extra-spaces/" }, { "name": "Word counter Count words, characters and lines as you type.", "url": "https://happytails.ai/en/text-tools/word-counter/" } ], "tool": { "id": "voice-to-text", "category": "speech-tools", "built": true, "requirements": "Record microphone dictation with explicit start and stop; distinguish provisional from final words; edit and copy text; disclose local versus uploaded recognition before recording.", "implementation": { "fields": [], "files": true, "accept": ".wav,.mp3,.m4a,.flac,.mp4,.mov,.webm", "multiple": false, "input": false, "processing": "Server required", "native": true, "ai": true, "maxFileBytes": 20971520, "note": "Runs with local model weights on this website’s server. No external AI API is used. Review the result for errors. Local Whisper tiny. Clips up to five minutes; review words and timing. Upload a voice recording; direct microphone capture is not yet included.", "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": "Convert file" }, "mode": "explicit", "interactive": false }, "execution": "POST /api/v1/tools/voice-to-text/run", "api": { "id": "voice-to-text", "name": "Voice to text", "category": "speech-tools", "description": "Turn an uploaded voice recording into a transcript.", "notes": "Runs with local model weights on this website’s server. No external AI API is used. Review the result for errors. Local Whisper tiny. Clips up to five minutes; review words and timing. Upload a voice recording; direct microphone capture is not yet included.", "human_path": "/en/speech-tools/voice-to-text/", "method": "POST", "endpoint": "/api/v1/tools/voice-to-text/run", "schema_url": "/api/v1/tools/voice-to-text", "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": {} }, "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; self-hosted native engine, no external conversion service", "limits": { "request_bytes": 31457280, "input_characters": 1000000, "files_bytes": 20971520, "max_files": 1, "timeout_seconds": 90 } }, "agent_processing": "Server; self-hosted native engine, no external conversion service", "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": "# Voice to text\n\n- Human page: https://happytails.ai/en/speech-tools/voice-to-text/\n- Markdown: https://happytails.ai/en/speech-tools/voice-to-text.md\n- Structured JSON: https://happytails.ai/agents/en/speech-tools/voice-to-text/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `voice-to-text` |\n| Category | speech-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 | Server required |\n| HTTP API | /api/v1/tools/voice-to-text/run |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nRuns with local model weights on this website’s server. No external AI API is used. Review the result for errors. Local Whisper tiny. Clips up to five minutes; review words and timing. Upload a voice recording; direct microphone capture is not yet included.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\nAccepted browser files: `.wav,.mp3,.m4a,.flac,.mp4,.mov,.webm`. Choose one file.\n\nBrowser file-input limit: 20971520 bytes in total. HTTP limits can differ.\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/voice-to-text/run\nContent-Type: application/json\n```\n\n[Detailed operation reference](https://happytails.ai/en/api/tools/voice-to-text.md) · [Shared API guide](https://happytails.ai/en/api.md)\n\n#### Limits\n\n| Limit | Value |\n| --- | --- |\n| request_bytes | 31457280 |\n| input_characters | 1000000 |\n| files_bytes | 20971520 |\n| max_files | 1 |\n| timeout_seconds | 90 |\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 \"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\nRecord microphone dictation with explicit start and stop; distinguish provisional from final words; edit and copy text; disclose local versus uploaded recognition before recording.\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\": \"voice-to-text\",\n \"category\": \"speech-tools\",\n \"built\": true,\n \"requirements\": \"Record microphone dictation with explicit start and stop; distinguish provisional from final words; edit and copy text; disclose local versus uploaded recognition before recording.\",\n \"implementation\": {\n \"fields\": [],\n \"files\": true,\n \"accept\": \".wav,.mp3,.m4a,.flac,.mp4,.mov,.webm\",\n \"multiple\": false,\n \"input\": false,\n \"processing\": \"Server required\",\n \"native\": true,\n \"ai\": true,\n \"maxFileBytes\": 20971520,\n \"note\": \"Runs with local model weights on this website’s server. No external AI API is used. Review the result for errors. Local Whisper tiny. Clips up to five minutes; review words and timing. Upload a voice recording; direct microphone capture is not yet included.\",\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\": \"Convert file\"\n },\n \"mode\": \"explicit\",\n \"interactive\": false\n },\n \"execution\": \"POST /api/v1/tools/voice-to-text/run\",\n \"api\": {\n \"id\": \"voice-to-text\",\n \"name\": \"Voice to text\",\n \"category\": \"speech-tools\",\n \"description\": \"Turn an uploaded voice recording into a transcript.\",\n \"notes\": \"Runs with local model weights on this website’s server. No external AI API is used. Review the result for errors. Local Whisper tiny. Clips up to five minutes; review words and timing. Upload a voice recording; direct microphone capture is not yet included.\",\n \"human_path\": \"/en/speech-tools/voice-to-text/\",\n \"method\": \"POST\",\n \"endpoint\": \"/api/v1/tools/voice-to-text/run\",\n \"schema_url\": \"/api/v1/tools/voice-to-text\",\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 \"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; self-hosted native engine, no external conversion service\",\n \"limits\": {\n \"request_bytes\": 31457280,\n \"input_characters\": 1000000,\n \"files_bytes\": 20971520,\n \"max_files\": 1,\n \"timeout_seconds\": 90\n }\n },\n \"agent_processing\": \"Server; self-hosted native engine, no external conversion service\",\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\nTurn an uploaded voice recording into a transcript.\n\n## Useful next steps\n\n- [Transcript editor](https://happytails.ai/en/speech-tools/transcript-editor/): Import transcript JSON and local audio. ([Markdown](https://happytails.ai/en/speech-tools/transcript-editor.md))\n\n- [Remove extra spaces](https://happytails.ai/en/text-tools/remove-extra-spaces/): Tidy repeated spaces without losing line breaks. ([Markdown](https://happytails.ai/en/text-tools/remove-extra-spaces.md))\n\n- [Word counter](https://happytails.ai/en/text-tools/word-counter/): Count words, characters and lines as you type. ([Markdown](https://happytails.ai/en/text-tools/word-counter.md))\n\n## How to use Voice to text\n\n1. Choose a file in WAV, MP3, M4A, FLAC, MP4, MOV or WEBM.\n2. Review the settings, then choose Convert file.\n3. Review the result, then use Copy result or a download link when available.\n\n## What to expect\n\nTurn an uploaded voice recording into a transcript. Runs with local model weights on this website’s server. No external AI API is used. Review the result for errors. Local Whisper tiny. Clips up to five minutes; review words and timing. Upload a voice recording; direct microphone capture is not yet included.\n" }