Changelog — CallMissed Docs

June 2026

LiveKit voice sessions — POST /v1/voice/sessions returns a LiveKit token + URL; CallMissed handles the STT→LLM→TTS pipeline. List, fetch, fetch transcript (json | txt | srt), and end sessions under /v1/voice/sessions. A public, capped browser demo lives at POST /v1/voice/demo. The legacy /ws/voice-agent WebSocket still works for backward compatibility. See Voice Session API.
Image Generation API — POST /v1/images/generations (OpenAI-compatible). Free models include flux-2-klein-9b, flux-2-dev, lucid-origin, phoenix-1.0, sdxl-lightning, dreamshaper-8-lcm; paid models include flux-2-pro, flux-1.1-pro, nano-banana-2, and nano-banana-pro. See Image Generation.
Web Search API — POST /v1/search defaults to Google grounded search (Exa, Serper, Firecrawl also available); flat 1 credit per query. See Web Search.
Knowledge RAG — vector knowledge sources at /api/v1/knowledge/sources (ingest text, URL, or PDF; chunked + embedded) with semantic search at POST /api/v1/knowledge/search.

First-party models — deployments callable by bare ID: gpt-4o, gpt-4.1, gpt-5-mini, grok-4.3, DeepSeek-V4-Pro, DeepSeek-V4-Flash, plus first-party STT (whisper, gpt-4o-transcribe, gpt-4o-mini-transcribe, gpt-4o-transcribe-diarize) and TTS (gpt-4o-mini-tts).
More STT/TTS — whisper-large-v3-turbo (99 langs), nova-3 (diarization), aura-2-en / aura-2-es, and melotts — all free-tier.
Kimi K2.6 — kimi-k2.6 added to the direct-routed free tier alongside kimi-k2.5.
TOTP 2FA & passkeys — /api/v1/auth/2fa/* (authenticator apps + backup codes) and WebAuthn passkeys at /api/v1/auth/passkey/*. Active sessions are listable and revocable at /api/v1/auth/sessions.
WhatsApp platform — Embedded Signup onboarding, message templates, broadcast campaigns, and delivery analytics under /api/v1/whatsapp/*. See WhatsApp API.
Billing surfaces — coupon redemption (POST /api/v1/coupons/redeem), downloadable invoices (/api/v1/invoices/:invoice_number/pdf), and a credit ledger with summary_by_type at /api/v1/credits/transactions.
Audit log — sensitive-action audit feed at /api/v1/audit/events.

Anthropic Messages API — New POST /v1/messages endpoint. Use the Anthropic SDK with CallMissed by changing only the base_url. Full streaming support with Anthropic SSE lifecycle (message_start, content_block_delta, message_stop).
Dual auth headers — Anthropic endpoint accepts both x-api-key and Authorization: Bearer headers
Model aliasing — Send claude-sonnet-4.6 on the Anthropic endpoint and it auto-routes to anthropic/claude-sonnet-4.6 in the frontier catalog
Audio Translation — New POST /v1/audio/translations endpoint. Translate audio in 24 languages to English text. OpenAI SDK compatible (client.audio.translations.create())
Token counting — POST /v1/messages/count_tokens for input token estimation
Anthropic rate limit headers — anthropic-ratelimit-requests-limit, anthropic-ratelimit-requests-remaining, etc.

Voice Agent WebSocket — Real-time STT→LLM→TTS pipeline over /ws/voice-agent. PCM audio in, streaming MP3 out. LLM and TTS run concurrently for minimum latency.
PCM AudioWorklet capture — Raw PCM s16le at 16kHz, no container overhead
Streaming MP3 playback — MediaSource API appends and plays chunks as they arrive
Profile management — Save and update user profile from the dashboard

Google OAuth — Sign in with Google via POST /api/v1/auth/google. Auto-creates tenant/user, links to existing accounts by email.
OTP Authentication — Email-based OTP for passwordless login and password reset
Plan limit enforcement — Server-side usage caps per plan tier (free/starter/pro/enterprise). API returns 429 quota_exceeded when limits reached. Usage headers (X-RateLimit-*, X-Usage-Warning) on every response.
Per-API-key rate limiting — 60 req/min per key on top of IP-based limits
Security hardening — SSRF prevention on webhooks, WebSocket auth enforcement, input sanitization, rate limiter IP cleanup, error message sanitization
Model catalog update — OpenAI gpt-5.4 family, Anthropic Claude 4.6, Google Gemini 3.1, xAI Grok 4.20, Qwen 3.5, Mistral Small
Knowledge Base file upload — Upload PDF, DOCX, TXT files (max 20 MB) with auto text extraction
Bot deployment verification — Verify WhatsApp/Twilio channel connectivity from the dashboard
Settings verification — Verify WhatsApp, Twilio, and Indic LLM API connectivity
Contact form — Public POST /api/v1/contact endpoint with email notifications
Dual-domain support — .com and .in TLDs for all apps

Playground rebuild — LLM (streaming + non-streaming), STT (file upload + mic), TTS (37 voices across 11 Indian languages), Voice Agent demo
Call Analytics API — Upload audio files for batch STT with diarization and LLM-powered analysis
SEO pages — 6 product pages, legal pages, company pages on the landing site
Sitemaps — All 4 apps have sitemap.ts for SEO

Chat Completion API — OpenAI-compatible endpoint with streaming, tool calls, and function calling
Speech to Text — saaras:v3 with 22 Indic language support
Text to Speech — bulbul:v3 (37 voices across 11 Indian languages)
WhatsApp Bot — Full WhatsApp Business API integration
Voice Calling — Twilio-based inbound voice with WebSocket streaming
Multi-tenant — Complete tenant isolation with role-based access
API Keys — Scoped API keys with usage tracking
Webhook Delivery — Outbound webhooks with retry and HMAC signing
Analytics Dashboard — Real-time conversation and usage analytics
300+ LLM Models — Access frontier models from OpenAI, Anthropic, Google, xAI, Qwen, and more

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