Open-source, self-hosted AI voice recorder (Plaud-style): ESP32-S3 firmware, Flutter app, self-hosted transcription/summary server, open API, 3D-printed case.
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feat(server): pluggable AI providers - any open-standard or commercial AI
Lets the owner point transcription and summarisation at any AI: an open-standard
endpoint (OpenAI-compatible / local faster-whisper / Ollama) or a commercial API
(OpenAI, Anthropic, Gemini). Config-driven, self-hostable, no lock-in.

What changed:
- server/app/providers/: provider layer.
  - base.py: Transcriber/Summariser protocols + shared summary prompt + tolerant JSON
    parser (uniform Summary shape across providers).
  - summary.py: OpenAICompatibleSummariser (any /chat/completions - OpenAI, Groq,
    OpenRouter, LocalAI, LM Studio, vLLM, Ollama /v1) and AnthropicSummariser (Claude
    via the official anthropic SDK; Messages API has no OpenAI-compatible endpoint).
  - transcription.py: OpenAICompatibleTranscriber (/audio/transcriptions - OpenAI,
    Groq, self-hosted whisper server) and LocalWhisperTranscriber (faster-whisper,
    execution wired in M5).
  - factory.py: builds the configured providers with per-provider defaults
    (anthropic -> claude-opus-4-8, openai_compatible -> gpt-4o-mini, ollama -> llama3.1).
- config.py + .env.example: transcription_provider / llm_provider selectors + base_url,
  key, model settings; local faster-whisper and Ollama kept as the self-hosted defaults.
- main.py: /health now reports the resolved provider names (no secrets).
- requirements.txt: httpx drives all HTTP providers; anthropic + faster-whisper are
  optional, only for their respective providers.
- docs/ai-providers.md: config recipes for OpenAI, Groq, Anthropic, Gemini, LocalAI,
  LM Studio, Ollama, self-hosted whisper.
- state/: DECISIONS, ARCHITECTURE, TODO updated.

Why:
- The user asked to connect the device to any open standard AI or commercial one; this
  is also the core differentiator vs Plaud's locked cloud.

Notes:
- Anthropic provider uses the official SDK and defaults to claude-opus-4-8 (per the
  claude-api guidance). AI deps are optional per chosen provider. Modules byte-compile
  cleanly; end-to-end wiring into the ingest pipeline lands with M5.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-03 18:56:58 +01:00
.forgejo/workflows test(dev): emulation + linting harness (Wokwi, native tests, CI, docs) 2026-07-03 12:16:25 +01:00
api scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
app scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
case scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
docs feat(server): pluggable AI providers - any open-standard or commercial AI 2026-07-03 18:56:58 +01:00
firmware test(dev): emulation + linting harness (Wokwi, native tests, CI, docs) 2026-07-03 12:16:25 +01:00
hardware scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
LICENSES scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
server feat(server): pluggable AI providers - any open-standard or commercial AI 2026-07-03 18:56:58 +01:00
state feat(server): pluggable AI providers - any open-standard or commercial AI 2026-07-03 18:56:58 +01:00
.gitignore scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
CLAUDE.md scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
LICENSE scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
LICENSING.md scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00
README.md scaffold: OpenScribe open-source self-hosted AI voice recorder 2026-07-03 10:21:37 +01:00

OpenScribe

An open-source, self-hosted AI voice recorder in the style of the Plaud Note / NotePin. A small wearable device records audio to local storage, syncs to a mobile app and to a server you run, and produces transcripts and summaries, through a completely open API. No proprietary cloud, no lock-in.

Status: early scaffold (M0). The design, hardware BOM, and open API are defined; component code is being built milestone by milestone. See state/TODO.md.

Why

Commercial AI recorders send your conversations to a vendor's cloud. OpenScribe keeps the whole pipeline (capture, storage, transcription, summarisation, export) on hardware you own, under open licences, with an API documented so you can build against it.

What it does

  • Records voice to microSD on a small ESP32-S3 device (button start/stop, LED status).
  • Syncs three ways:
    1. BLE for control, status and WiFi provisioning.
    2. WiFi to the mobile app for fast bulk transfer.
    3. Independent WiFi upload to your storage when on charge / hard-powered, with no phone present.
  • Transcribes (faster-whisper) and summarises (local LLM via Ollama) on a server you host.
  • Exposes a completely open REST API with exports: audio, TXT, SRT, VTT, Markdown, JSON.
  • Ships a Flutter app (Android + iOS) and a 3D-printed parametric case.

Architecture at a glance

mic -> ESP32-S3 (record to microSD)
         |  BLE: control / provision
         |  WiFi REST API: transfer to app
         |  WiFi uploader (on charge) -> object storage (MinIO / WebDAV / NAS)
                                              |
                                    self-hosted server (FastAPI)
                                    faster-whisper -> Ollama -> open API + exports
                                              |
                              Flutter app (Android + iOS)

Full detail: state/ARCHITECTURE.md. The API contract: api/openapi.yaml.

Repository layout

firmware/   ESP32-S3 recorder firmware (PlatformIO, Arduino-ESP32)
server/     Self-hosted FastAPI server: ingest, transcribe, summarise, serve API
app/        Flutter mobile app (Android + iOS)
hardware/   BOM, wiring/pinout, build notes (off-the-shelf modules, no PCB in v1)
case/       Parametric 3D-printed enclosure (OpenSCAD)
api/        openapi.yaml - the single source of truth for the open API
docs/       Workflow docs (this project follows the Default Workflow SOP)
state/      Project memory: PROJECT, ARCHITECTURE, DECISIONS, TODO, NOTES
LICENSES/   Full licence texts

Hardware

You build the device from off-the-shelf parts. See hardware/BOM.md for the shopping list, wiring and pinout. Core: an ESP32-S3 board with PSRAM, an I2S MEMS microphone, a microSD card, a LiPo battery and a charge IC.

Self-hosted stack

Everything runs on hardware you own: Forgejo for the forge, faster-whisper for transcription, Ollama for summaries, MinIO (or WebDAV / NAS) for storage. Plain recording and transfer work without any server; the server adds transcription and summaries.

Getting started

Nothing to run end to end yet (M0 scaffold). To follow along:

Licensing

Multi-part, copyleft. Code is GPL-3.0-only, hardware is CERN-OHL-S-2.0, case and docs are CC-BY-SA-4.0. See LICENSING.md.

OpenScribe is an independent open-source project inspired by the Plaud class of device. It is not affiliated with or endorsed by Plaud.