{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"tool_speechgen","slug":"speechgen","name":"SpeechGen","type":"product","url":"https://speechgen.io","page_url":"https://unfragile.ai/speechgen","categories":["voice-audio"],"tags":[],"pricing":{"model":"freemium","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"tool_speechgen__cap_0","uri":"capability://text.generation.language.multi.language.text.to.speech.synthesis.with.neural.voice.models","name":"multi-language text-to-speech synthesis with neural voice models","description":"Converts plain text input into natural-sounding audio across 100+ languages and regional accents using neural TTS synthesis. The platform routes text through language-specific voice models that generate phoneme sequences and prosody patterns, producing audio files in MP3 or WAV format. Supports both standard and premium voice variants with configurable speech rate and pitch parameters for each language.","intents":["I need to convert blog posts and articles into audio for podcast-style distribution across multiple languages","I want to add audio narration to educational content without hiring voice actors for each language","I need accessible audio versions of my website content for users with visual impairments across different regions","I'm building a multilingual app and need TTS that doesn't require managing separate voice talent for each language"],"best_for":["content creators producing multilingual educational or entertainment content","accessibility teams building inclusive digital products","indie developers prototyping voice-enabled applications on limited budgets","small e-learning platforms needing narration without production overhead"],"limitations":["Voice quality varies significantly by language — European languages sound natural, but non-Latin scripts and tonal languages show degradation","Free tier limited to ~5,000 characters/month, making sustained production impractical without paid subscription","No fine-grained control over prosody, emphasis, or emotional tone — output is relatively flat for non-English","Latency for synthesis can exceed 5-10 seconds for longer texts, unsuitable for real-time conversational applications","Limited voice diversity per language compared to Google Cloud TTS (typically 2-4 voices vs 10+)"],"requires":["API key from SpeechGen account (free tier available without credit card)","Plain text input (no markdown, HTML, or SSML support documented)","Internet connection for API calls (no offline synthesis capability)","HTTP/REST client or SDK for integration"],"input_types":["plain text (UTF-8 encoded)","text strings up to documented character limits per request"],"output_types":["MP3 audio files (compressed, streaming-friendly)","WAV audio files (uncompressed, higher fidelity)"],"categories":["text-generation-language","audio-synthesis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"tool_speechgen__cap_1","uri":"capability://tool.use.integration.simple.rest.api.integration.with.multiple.export.format.support","name":"simple rest api integration with multiple export format support","description":"Exposes text-to-speech functionality via a straightforward HTTP REST API that accepts text and language parameters, returning audio files in MP3 or WAV format. The API abstracts away voice model selection and synthesis complexity, allowing developers to integrate TTS with minimal boilerplate. Supports direct file downloads or streaming responses, enabling both batch processing and real-time audio generation workflows.","intents":["I want to add TTS to my web application without complex SDK dependencies or authentication flows","I need to batch-convert hundreds of text snippets to audio and download them as files for offline use","I'm building a voice-enabled chatbot and need to stream audio responses back to users in real-time","I want to export TTS output in both compressed (MP3) and lossless (WAV) formats depending on use case"],"best_for":["full-stack developers building web or mobile apps with TTS features","teams with existing REST-based microservice architectures","developers who prefer simplicity over advanced customization","projects requiring multi-format audio export for different distribution channels"],"limitations":["REST API introduces network latency — each synthesis request requires a round-trip, unsuitable for sub-second response requirements","No batch endpoint documented — processing large volumes requires sequential API calls, increasing total time and rate-limit risk","No SSML (Speech Synthesis Markup Language) support, limiting control over pronunciation, emphasis, and pauses","Streaming responses may not support chunked encoding for very long texts, requiring buffering on client side","Rate limiting and quota enforcement unclear from public documentation, creating uncertainty for production deployments"],"requires":["API key from SpeechGen account","HTTP client library (curl, axios, requests, etc.)","Network connectivity to SpeechGen servers","Understanding of REST conventions and JSON/form-encoded request bodies"],"input_types":["plain text via POST request body or query parameter","language code (ISO 639-1 or similar)","optional voice selection parameter"],"output_types":["MP3 audio file (binary stream)","WAV audio file (binary stream)","HTTP response with Content-Type audio/mpeg or audio/wav"],"categories":["tool-use-integration","api-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"tool_speechgen__cap_2","uri":"capability://tool.use.integration.freemium.tier.with.character.based.usage.quotas.and.credit.card.free.onboarding","name":"freemium tier with character-based usage quotas and credit card-free onboarding","description":"Implements a freemium business model where users can create accounts and test TTS functionality without providing payment information upfront. The free tier enforces monthly character limits (approximately 5,000 characters) and restricts access to a subset of available voices, with paid tiers unlocking higher quotas and premium voice options. Usage is tracked server-side and enforced via API response codes or quota-exceeded errors.","intents":["I want to evaluate SpeechGen's voice quality and language support before committing to a paid plan","I'm building a proof-of-concept and need to test TTS integration without financial risk","I have a low-volume use case and want to use TTS occasionally without paying for enterprise plans","I want to demonstrate TTS capabilities to stakeholders without requesting budget approval first"],"best_for":["individual developers and hobbyists evaluating TTS solutions","startups in early prototyping phases with limited budgets","students and educators exploring voice technology","teams needing to justify TTS investment with proof-of-concept results"],"limitations":["Free tier character limit (~5,000/month) is extremely restrictive — a single 10-minute audiobook chapter exceeds this quota","Limited voice selection on free tier may not represent quality of paid voices, creating false impressions of service quality","No clear upgrade path or pricing transparency in public documentation, forcing users to contact sales for cost estimates","Monthly quota resets may not align with project timelines, creating artificial friction for continuous development","Free tier may have longer processing times or lower priority in synthesis queue compared to paid users"],"requires":["Email address for account creation","No credit card required for free tier signup","Acceptance of terms of service and usage policies"],"input_types":["email and password for account registration","optional profile information"],"output_types":["API key for authenticated requests","account dashboard showing usage statistics and quota remaining"],"categories":["tool-use-integration","business-model"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"tool_speechgen__cap_3","uri":"capability://text.generation.language.language.and.accent.selection.with.regional.voice.variants","name":"language and accent selection with regional voice variants","description":"Allows users to specify target language and regional accent when synthesizing text, with the platform routing requests to language-specific voice models trained on native speaker data. The system supports 100+ language-accent combinations, enabling content creators to produce audio in regional dialects (e.g., British English vs. American English, European Spanish vs. Latin American Spanish). Voice selection is typically specified via language code and optional accent/region parameter in API requests.","intents":["I need to produce audiobooks in British English for UK audiences and American English for US audiences from the same text","I'm creating educational content for Spanish learners and want to use European Spanish pronunciation","I want to localize my app's voice interface for different regions without managing separate text scripts","I need to test how my content sounds across different language variants to ensure cultural appropriateness"],"best_for":["content creators serving geographically diverse audiences","language learning platforms needing authentic regional pronunciation","multinational companies localizing products for different markets","accessibility teams ensuring audio content matches user language preferences"],"limitations":["Voice quality varies dramatically by language — European languages sound natural, but tonal languages (Mandarin, Vietnamese) and non-Latin scripts show significant degradation","Limited accent variants per language — typically 1-2 options vs. 5-10 available from competitors like Google Cloud TTS","No way to preview or compare accents before synthesis, requiring trial-and-error or manual testing","Accent selection may not be granular enough for specialized use cases (e.g., Scottish English, Catalan within Spanish)","Documentation unclear on which languages support which accents, creating integration uncertainty"],"requires":["ISO 639-1 language code (e.g., 'en', 'es', 'fr')","Optional region/accent code (e.g., 'en-GB', 'es-ES')","Knowledge of supported language-accent combinations (not fully documented)"],"input_types":["language code string","accent/region code string","plain text in target language"],"output_types":["audio file synthesized with specified language and accent"],"categories":["text-generation-language","localization"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"tool_speechgen__cap_4","uri":"capability://text.generation.language.voice.rate.and.pitch.parameter.customization","name":"voice rate and pitch parameter customization","description":"Exposes configurable parameters for speech rate (words per minute) and pitch (fundamental frequency) that users can adjust per synthesis request to customize audio output characteristics. These parameters are applied during the neural vocoding stage, allowing real-time adjustment without retraining voice models. Typical ranges are 0.5x to 2.0x for rate and ±20% for pitch, enabling users to create variations of the same text without multiple API calls.","intents":["I want to slow down speech rate for language learners or accessibility users who need more time to process audio","I need to create multiple audio versions (fast for summaries, slow for detailed explanations) from the same text","I want to adjust pitch to match brand voice guidelines or create distinct character voices for audiobook narration","I'm testing how different speech rates affect comprehension in my educational app"],"best_for":["accessibility-focused applications serving users with auditory processing difficulties","language learning platforms needing variable speech rates for different proficiency levels","content creators producing multiple audio variants from single source text","audiobook and podcast producers customizing voice characteristics per character or section"],"limitations":["Pitch adjustment may introduce artifacts or unnatural-sounding output at extreme values (±20% or beyond)","Speech rate changes don't adjust pause duration or prosody — fast speech may sound rushed, slow speech may sound unnatural","No documentation on supported parameter ranges or how values map to actual speech characteristics","Parameters apply globally to entire synthesis request — no per-sentence or per-word customization","Extreme parameter combinations may exceed API processing time limits, causing timeouts"],"requires":["API parameter support for 'rate' or 'speed' (exact parameter names unclear from documentation)","API parameter support for 'pitch' or 'tone'","Understanding of reasonable parameter ranges (0.5x-2.0x for rate, ±20% for pitch estimated)"],"input_types":["speech rate multiplier (numeric, typically 0.5-2.0)","pitch adjustment (numeric, typically -20 to +20 or similar range)"],"output_types":["audio file with adjusted rate and pitch applied"],"categories":["text-generation-language","audio-customization"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"tool_speechgen__cap_5","uri":"capability://tool.use.integration.account.based.api.key.authentication.and.usage.quota.tracking","name":"account-based api key authentication and usage quota tracking","description":"Implements account-based authentication where users receive an API key upon signup, which must be included in all API requests for authorization. The platform tracks usage server-side (characters synthesized, API calls made) and enforces monthly quotas based on subscription tier. Usage data is exposed via account dashboard showing remaining quota, historical consumption, and billing information. Quota enforcement happens at the API gateway level, returning HTTP 429 (Too Many Requests) or similar when limits are exceeded.","intents":["I need to authenticate my application's TTS requests without managing complex OAuth flows","I want to monitor my team's TTS usage and ensure we stay within budget limits","I need to revoke API access if a team member leaves without changing application code","I want to set up alerts when my usage approaches monthly quota limits"],"best_for":["small teams and solo developers needing simple API authentication","projects with straightforward access control (single API key per application)","teams wanting visibility into usage patterns and costs"],"limitations":["Single API key per account creates security risk if key is exposed — no granular scoping or per-application keys documented","No rate limiting details documented — unclear if limits are per-second, per-minute, or per-month, or how burst traffic is handled","Quota enforcement appears to be monthly reset only — no daily or weekly granularity for budget management","No webhook or email notifications for quota warnings — users must manually check dashboard to avoid overages","API key rotation process unclear, creating potential security gaps if key compromise is suspected","No audit logging documented — cannot track which requests consumed quota or identify anomalous usage patterns"],"requires":["Email address and password for account creation","API key included in request headers (typical: 'Authorization: Bearer <key>' or 'X-API-Key: <key>')","Active subscription (free or paid tier)"],"input_types":["email and password for account registration","API key for request authentication"],"output_types":["API key string (typically 32-64 character alphanumeric)","account dashboard with usage statistics and quota information","HTTP 401 (Unauthorized) for missing/invalid keys, HTTP 429 for quota exceeded"],"categories":["tool-use-integration","authentication"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":39,"verified":false,"data_access_risk":"high","permissions":["API key from SpeechGen account (free tier available without credit card)","Plain text input (no markdown, HTML, or SSML support documented)","Internet connection for API calls (no offline synthesis capability)","HTTP/REST client or SDK for integration","API key from SpeechGen account","HTTP client library (curl, axios, requests, etc.)","Network connectivity to SpeechGen servers","Understanding of REST conventions and JSON/form-encoded request bodies","Email address for account creation","No credit card required for free tier signup"],"failure_modes":["Voice quality varies significantly by language — European languages sound natural, but non-Latin scripts and tonal languages show degradation","Free tier limited to ~5,000 characters/month, making sustained production impractical without paid subscription","No fine-grained control over prosody, emphasis, or emotional tone — output is relatively flat for non-English","Latency for synthesis can exceed 5-10 seconds for longer texts, unsuitable for real-time conversational applications","Limited voice diversity per language compared to Google Cloud TTS (typically 2-4 voices vs 10+)","REST API introduces network latency — each synthesis request requires a round-trip, unsuitable for sub-second response requirements","No batch endpoint documented — processing large volumes requires sequential API calls, increasing total time and rate-limit risk","No SSML (Speech Synthesis Markup Language) support, limiting control over pronunciation, emphasis, and pauses","Streaming responses may not support chunked encoding for very long texts, requiring buffering on client side","Rate limiting and quota enforcement unclear from public documentation, creating uncertainty for production deployments","builder identity is not verified yet","no observed match outcomes 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