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Waxum

Waxum

WhatsApp REST API gateway. Written in Rust.

Docs · API · Releases

Native single-binary. Multi-session. Multi-DB. Webhooks + HMAC. JWT + Bearer. Swagger. Prometheus. NATS JetStream (optional).

Production-grade. 130+ REST endpoints across 22 feature modules.

Features

Messaging

Feature Endpoint prefix
Text, image, video, audio, document, sticker POST /sessions/{sid}/messages/*
Location, contact card, poll POST /sessions/{sid}/messages/{location,contact,poll}
Reactions, forward, edit, revoke, star POST /sessions/{sid}/messages/{react,forward,edit,delete,star}
Reply / quote with context POST /sessions/{sid}/messages/text (quoted_id)
Fake-reply (spoofed quote metadata) POST /sessions/{sid}/fake-reply/*
CTA URL with image + header/footer POST /sessions/{sid}/messages/cta-url
Broadcast lists POST /sessions/{sid}/broadcast
Chat state (typing / recording / paused) POST /sessions/{sid}/chat-state
Read receipts, mark as read POST /sessions/{sid}/messages/read
MEX GraphQL passthrough (server queries) POST /sessions/{sid}/mex
Message history + full-text search (SQLite FTS5) GET /sessions/{sid}/messages/search?q=, GET /messages/search?q=

Scheduling & bulk send

Feature Endpoint
Scheduled send (send_at on all 34 send endpoints) GET/DELETE /sessions/{sid}/scheduled, GET /scheduled
Blast queue (bulk send, pacing, dedup, retry, DLQ) POST /sessions/{sid}/blast, GET /sessions/{sid}/blasts*, GET /blasts

Voice & video calls

Feature Endpoint
Ring / hangup / accept / reject POST /sessions/{sid}/calls/*
Text-to-speech call (Edge TTS, 300+ voices) POST /sessions/{sid}/calls/tts
Audio playback call (MP3/WAV upload or URL) POST /sessions/{sid}/calls/play
Native MLOW codec (WA proprietary, pure Rust) internal
Peer audio recording (WAV) GET /sessions/{sid}/calls/{cid}/recording.wav
Bidirectional media WebSocket stream (audio) WS /sessions/{sid}/calls/media/ws?to=&kind=audio
Bidirectional media WebSocket stream (audio + video, H.264) WS /sessions/{sid}/calls/media/ws?to=&kind=av — transport only, bring your own H.264 encoder/decoder (e.g. ffmpeg) on the client side
Transcript of a recording (external whisper.cpp server) POST /sessions/{sid}/calls/{cid}/transcript — needs WHISPER_API_URL; waxum stays a pure-Rust single binary, no C++/whisper.cpp is compiled in

Session management

Feature Endpoint
Multi-session on one process POST /sessions
Pair via QR (PNG + SVG) GET /sessions/{sid}/qr, /qr-svg
Pair via 8-char code POST /sessions/{sid}/pair
Auto-reconnect on start env WA_AUTO_RECONNECT_ON_START=1
Fleet stats (uptime, per-status counts) GET /stats
Search sessions (name/phone/JID) GET /sessions/search?q=
Bulk purge (by status, older-than, dry-run) POST /sessions/purge
Bulk disconnect / reconnect POST /sessions/{disconnect,reconnect}-all
Re-enable all tripped webhook circuits POST /webhooks/reenable-all

Groups

Feature Endpoint prefix
Create / leave / info / settings POST /sessions/{sid}/groups/*
Member add / remove / promote / demote POST /sessions/{sid}/groups/{gid}/*
Invite link create / revoke / join POST /sessions/{sid}/groups/{gid}/{invite,revoke,join}
Description / subject / picture / announce / lock PATCH /sessions/{sid}/groups/{gid}/*
Pending join requests approval POST /sessions/{sid}/groups/{gid}/requests

Contacts / privacy / presence

Feature Endpoint
is_on_whatsapp batch check POST /sessions/{sid}/contacts/check
Contact info + profile picture GET /sessions/{sid}/contacts/{jid}
Sync device contacts POST /sessions/{sid}/contacts/sync
Block / unblock / list blocked POST /sessions/{sid}/blocking/*
Privacy settings (last-seen, profile, status) PATCH /sessions/{sid}/privacy
Presence broadcast (online / offline) POST /sessions/{sid}/presence

Media & storage

Feature Endpoint
Multipart upload (image/video/audio/document) POST /sessions/{sid}/media/upload
Direct URL send (server downloads on your behalf) POST /sessions/{sid}/messages/image?url=
Download inbound media by message id GET /sessions/{sid}/media/{mid}
Media storage on disk (configurable path) env WA_MEDIA_DIR

Webhooks

Feature Endpoint
Per-session webhook URL + secret POST /sessions/{sid}/webhooks
HMAC-SHA256 signature (X-Webhook-Signature) header
Event filter mask (message, receipt, call, presence, …) event_mask field
Circuit breaker (auto-trip on Nx 5xx) env WEBHOOK_CB_THRESHOLD
Dead-letter queue + replay GET /webhooks/dlq, POST /webhooks/dlq/replay
Re-enable all tripped circuits (bulk) POST /webhooks/reenable-all

Ops / observability

Feature Endpoint
Server-rendered ops console (Handlebars, no SPA) /
Per-session playground covering 60+ endpoints /s/{sid}
Swagger UI + OpenAPI 3.1 schema /swagger-ui
Liveness / readiness probes /livez, /readyz
Prometheus metrics (counters + gauges) /metrics
Session tags (in-memory + JSON snapshot) GET/PUT/POST /api/v1/sessions/{sid}/tags, DELETE .../tags/{tag}, GET /api/v1/tags, GET /api/v1/sessions?tag=
SSE event tail (filter by session / event) GET /api/v1/events/tail
List Edge-TTS voices GET /api/v1/voices
TTS voice preview (returns MP3) GET /api/v1/tts/preview?text=&voice=
Instance-lock file (single-writer safety) on-boot
FD-limit warning at start (nofile < 65536) on-boot
JWT + static Bearer auth, per-token IP allowlist (planned) header
NATS JetStream event fan-out (optional) env NATS_URL

Storage backends

Feature Notes
SQLite (default, single-binary friendly) WA_DB=sqlite:///path.db
Postgres (recommended for prod, > 50 sessions) WA_DB=postgres://…
MySQL WA_DB=mysql://…

Roadmap / on-going

Feature Status
Video call (H.264 relay over calls/media/ws?kind=av) shipped 0.9.0
Group voice call blocked upstream — whatsapp-rust has no multi-party relay/SFU client at all (single-peer engine only); not a waxum gap, needs its own library-level project
Transcript of a recording shipped 0.9.1 — calls an external whisper.cpp-compatible HTTP server (WHISPER_API_URL), not bundled into the binary
Message search via SQLite FTS shipped 0.8.0
Blast queue engine (bulk send, dedup, retry, DLQ) shipped 0.8.0
Scheduled send (send_at ISO) shipped 0.8.0
S3 backend for media & recordings scoped
Session tags / groups shipped 0.7.13
Rust client crate scoped
n8n community node scoped
Chatwoot bridge idea
Distributed mode (multi-instance + leader elect) idea
Session migration between instances idea
Signal-store encryption at rest (sqlcipher) idea

Console

Server-rendered ops dashboard baked into the binary. Point a browser at http://<host>:3451/, sign in with your SUPERADMIN_TOKEN, and you land on the fleet overview. Click any session for the per-session playground covering 60+ REST endpoints — send messages, drive calls, manage groups, inspect webhooks, all without leaving the tab.

Waxum Console — fleet overview

Waxum Console — session playground

Install

# Linux / macOS
curl -fsSL https://raw.githubusercontent.com/imtaqin/waxum/main/scripts/install.sh | sudo bash

# Windows (elevated PowerShell)
irm https://raw.githubusercontent.com/imtaqin/waxum/main/scripts/install.ps1 | iex

# Docker
docker pull fdciabdul/waxum

Or build from source:

git clone https://github.com/imtaqin/waxum && cd waxum
cargo build --release
./target/release/waxum

Endpoints

URL Purpose
/ Console — fleet overview + per-session playground
/api/v1 REST API
/swagger-ui OpenAPI schema + interactive docs
/livez · /readyz Liveness · readiness probes
/metrics Prometheus text exposition

Stack

Rust nightly · Axum 0.8 · Tokio · whatsapp-rust · Postgres/MySQL/SQLite · NATS JetStream · Prometheus · Utoipa.

Docs

Everything else — endpoints, webhooks, health probes, deployment, .env reference — lives in the docs:

waxum.imtaqin.id

License

MIT

About

WhatsApp REST API gateway in Rust. 110+ endpoints across 21 modules — messaging, voice calls (native MLOW + TTS), groups, webhooks + circuit breaker, fleet ops. Multi-session, multi-DB, single binary.

waxum.imtaqin.id

Topics

wa-rustwhatsappwhatsapp-botwhatsapp-gatewaywhatsapp-rust

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Readme

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