vexa
Open-source meeting transcription API for Google Meet, Microsoft Teams & Zoom. Auto-join bots, real-time WebSocket transcripts, MCP server for AI agents. Self-host or use hosted SaaS.
Documentation
Why Vexa
Every meeting-AI tool you can buy sends your conversations to *their* cloud and rents you
access back. Vexa inverts that: run the stack yourself, point it at your own models, own what
your meetings become.
No one else has all three:
1. **Vexa is *in* the meeting.** A real bot joins Meet, Teams and Zoom — Jitsi offline-proven, live
validation pending — and streams speaker-attributed transcripts live. That bot fleet is the
genuinely hard part — every "chat with your docs" tool starts *after* a transcript exists. Vexa
produces it.
2. Your knowledge is files you own. Meetings compile into Markdown in a git repo —
portable, diffable, greppable. Knowledge as code.
3. Agents work it, safely. Sandboxed coding agents read and write that repo like
developers — isolated ephemeral containers, no egress, thousands in parallel, on Docker
or your Kubernetes.
> Only here for the transcription API? It's a complete standalone product — send a bot,
> read the stream, ignore the agent lane entirely.
⚡ Quickstart
Just want a bot in a meeting? Use the hosted service — no install. Sign in at
vexa.ai/signin, copy your key from your account page,
and send a bot:
curl -X POST "https://api.cloud.vexa.ai/bots" \
-H "X-API-Key: $API_KEY" -H "Content-Type: application/json" \
-d '{"platform":"google_meet","native_meeting_id":"abc-defg-hij","bot_name":"Vexa"}'New accounts get $5 of free bot credit, no card required — about 16 hours of bot time at
$0.30/hr (pricing). More calls: Send a bot.
Or self-host the whole stack
That is also how you get the agent plane, which is not part of the hosted service.
Self-host on one host, then explore it in the Terminal or drive it over the API.
Linux (Ubuntu 24.04) is the production target; a Mac with Docker Desktop works fine for a local
evaluation — everything runs in containers either way.
Prerequisites — `make`, Docker engine ≥ v26 (`make all` checks), and transcription: a free token at
vexa.ai/account, or self-host the (GPU) transcription unit for a fully
air-gapped setup. By default `POST /bots` requires STT and answers 503 when it is missing
(`make all` warns when the credentials block in `.env` is empty). Capture-only is an explicit opt-out:
`{"transcribe_enabled": false}` on the spawn (or set `TRANSCRIBE_ENABLED=false` for the deployment).
> Build machine: `make all` pulls the published, release-validated images — no build, so a
> modest box is fine. `make lite` (the single-container all-in-one image) is lighter still. Building
> from this checkout instead (`make dev`, for contributors) wants 8 vCPUs and 16 GB RAM.
git clone https://github.com/Vexa-ai/vexa.git && cd vexa
make all # full Docker Compose stack — seeds .env, pulls the images (bot included),
# prints your API key + URLs. Contributors: `make dev` builds from this checkout.When `make all` finishes it prints your key and URLs:
Terminal UI : http://localhost:13000 # the web workbench
API gateway : http://localhost:18056 # the API
API key : vxa_…Explore in the Terminal (the fast path)
The Terminal is the way to see what Vexa can do. Open `http://localhost:13000` — you're
already signed in to a self-host account. From the
workbench you can, with no curl:
- Send a bot — paste a Meet / Zoom / Teams / Jitsi URL; a bot joins as a participant.
- Watch the transcript stream in live, speaker-attributed, draft-then-confirmed.
- Chat with your workspace — ask an agent that has every captured meeting as context, and watch it
commit what you decide.
Or drive it over the API
export API_KEY=vxa_...
export API_BASE=http://localhost:18056
# WIN 1 — send a bot into a live call, then read the transcript as it streams
curl -X POST "$API_BASE/bots" \
-H "X-API-Key: $API_KEY" -H "Content-Type: application/json" \
-d '{"platform":"google_meet","native_meeting_id":"abc-defg-hij","bot_name":"Vexa"}'
curl -H "X-API-Key: $API_KEY" "$API_BASE/transcripts/google_meet/abc-defg-hij"
# WIN 2 — ask an agent that has your whole workspace as context (answer streams back as SSE)
curl -N -X POST "$API_BASE/agent/chat" \
-H "X-API-Key: $API_KEY" -H "Content-Type: application/json" \
-d '{"prompt":"What did we decide in my last meeting?"}'`platform` is `google_meet` · `teams` · `zoom` · `jitsi`; `native_meeting_id` is the code from the join URL. The
agent reply streams as Server-Sent Events — `message-delta` frames carry the text, `commit` frames mark
anything it recorded into your workspace.
🧩 How it works
One gateway, two domains — Meetings (capture) and Agents (work the knowledge) — both running on
the same runtime: the engine that spawns every bot and every agent in its own sandboxed container.
A bot and an agent are the same `runtime.v1` workload — isolated, ephemeral, reaped on idle — so the
machinery already proven by thousands of meeting bots is exactly what runs your agents. Every arrow stays
inside your network.
⚙️ The agentic runtime
A CLI coding agent is just a process on Linux. The runtime makes that a multi-tenant,
sandboxed execution layer safe to point at real business data — the same engine that already
spawns Vexa's meeting bots in production.
- Isolated. Every dispatch gets its own container: no egress except brokered tools, and
only its granted workspaces exist in its filesystem — enforced by the substrate, not by the
agent. Agents never run in the control plane.
- Ephemeral. A container lives while it works and is reaped on idle; continuity is a
session file in the workspace. Sub-second starts, thousands in parallel.
- Orchestration-agnostic. One `runtime.v1` lifecycle, pluggable substrate — the same
dispatch runs identically across:
| Backend (`RUNTIME_BACKEND`) | A workload is… | State |
|---|---|---|
| `docker` (default) | its own container via the Docker socket — brought up with `make all` | ✅ Shipped (open core) |
| `process` | a child process, no Docker socket required | ✅ Available |
| `k8s` | a bare Pod (`kubectl run --restart=Never`), scheduled across a cluster | ✅ Lifecycle + per-mount workspace isolation; Helm chart in `deploy/helm` |
Same control plane, same worker — only how the container is created changes. One laptop to a
Kubernetes/OpenShift cluster, inside your walls.
🧠 Agents & your workspace
Capture is the front door; agents make the knowledge compound. Every meeting compiles into
your workspace — a git repo of Markdown (an Open Knowledge Format
`kg/` bundle) that agents (Claude Code, Codex, …) read and write like developers work a codebase.
> This is Andrej Karpathy's **LLM Wiki**
> pattern, run as a team service. The idea: don't RAG over raw documents — where the model
> rediscovers everything from scratch on every question — have agents compile sources into
> structured, interlinked markdown entity pages (people, companies, projects, decisions) so
> knowledge compounds. Vexa builds that wiki for you from the richest source there is: your
> meetings. Each call is ingested into entity pages; agents keep them current between calls; every
> answer starts from what your team already knows — on your own servers.
Agents work *any* workspace; a meeting is just one trigger of four — chat, schedule
(cron), event (e.g. incoming email), finished meeting. Meetings themselves are scheduled
work: connect your calendar (ICS) and planned meetings appear with attendees — bots
auto-join, agents prepare before the call and process after it.
- Multiplayer. Team-shared, attributed workspaces — not one person's private notes.
- Automated. The bot captures the call; the transcript compiles itself in.
- Safe by design. Agents are untrusted and enforce nothing themselves. You, in chat, write
directly (git is the undo); untrusted input — an email, a web page — runs propose-only:
the agent suggests, a human approves, trusted code applies. Irreversible effects are always gated.
> Status (honest): capture, transcription, and speaker attribution are production; the
> agent dispatch core is built and proven live end-to-end. What's still landing is tracked in
> Status.
🖥️ The Terminal: AI-augmented meetings
0.12 ships a new Terminal UI built to put the backend's scale — thousands of bots and
agents — to work on your actual week. It opens on your meetings: coming up, live now, to review.
- An agent in your meeting, with your knowledge. Open a live call: the transcript streams
speaker-attributed, and the agent has the live conversation *and* your workspace in context.
Ask mid-call "what did we promise them last time?" — or research a person, company, or
contract the moment it comes up, grounded in your wiki.
- Knowledge built on meetings — and between them. Every planned meeting gets an agent that
prepares the brief before (who's coming, history, open threads — it interviews *you* for
what it can't know) and processes the transcript after. Arrive prepared, leave with the
wiki updated.
- Sharing. Invite colleagues into a workspace — same wiki, attributed. Share a meeting with
its attendees — they get the real-time feed, not a recording link after the fact.
- Collaborative, AI-augmented meetings. Prep a shared workspace together; during the call,
humans edit the brief while agents stream the transcript in and work the knowledge — one room,
human and AI participants on the same files.
📖 How-to recipes
Each is a complete path to one outcome over the Agent API. Full guides at
💬 Chat with your workspace — ask an agent that has every meeting, email, and note as context; trusted
chat can also record a decision (a git commit).
curl -N -X POST "$API_BASE/agent/chat" -H "X-API-Key: $API_KEY" -H "Content-Type: application/json" \
-d '{"prompt":"Brief me on the Acme account: every meeting, the open decisions, and the next step."}'🌅 Brief me every morning — an unattended agent on a cron schedule that commits to your workspace.
curl -X POST "$API_BASE/agent/routines" -H "X-API-Key: $API_KEY" -H "Content-Type: application/json" \
-d '{"name":"Morning brief","cron":"0 8 * * 1-5",
"prompt":"Brief me from overnight activity — new meetings, decisions, follow-ups due. Write brief/today.md.",
"run_now":true}'📝 Report after every meeting — dispatch a one-shot agent when a call ends (or a routine that sweeps
recent meetings).
curl -X POST "$API_BASE/agent/invocations" -H "X-API-Key: $API_KEY" -H "Content-Type: application/json" \
-d '{"runner":"claude-code","workspaces":[{"id":"u_jane","mode":"rw"}],"trigger":"scheduled",
"start":{"entrypoint":{"inline":"Write a report for the meeting that just ended: summary, decisions, action items with owners."}}}'📧 Triage incoming email (safely) — an event-triggered agent that gets the mailbox read-only and can
only *propose* actions as cards; a human approves before anything is written or sent.
curl -X POST "$API_BASE/agent/events" -H "X-API-Key: $API_KEY" -H "Content-Type: application/json" \
-d '{"name":"email.received","source":{"uri":"mailbox://u_jane/INBOX/AB12CD"},
"plan":{"prompt":"Triage this email into tasks; propose a record for each action item and a draft reply."}}'> Live-meeting copilot — cards for people, decisions, and action items *during* the call
> (`POST /agent/meeting/start` → stream `GET /agent/meeting/stream`) — is on the roadmap; see
> Status.
🚀 Deployment options
Two ways to run Vexa, one codebase:
1. Personal / dev — Docker on your Mac, Linux, or Windows machine.
Single container (`make lite` — the all-in-one Vexa Lite image) or the full Compose stack
(`make all`). Reuse your Claude subscription: workers run the official `claude` CLI against
your own Pro/Max credential, which is a covered, credit-metered use under Anthropic's terms for a
personal deployment — your subscription, your turns, your machine. See
Model credentials & licensing for the exact
terms mapping (Anthropic's Agent SDK plan-usage article
is the primary source). You get the full service — bots, transcripts, agents, Terminal — on the
subscription you already pay for.
2. Cloud — Helm on Kubernetes / OpenShift, scalable to thousands of users.
The chart in `deploy/helm` deploys the same control plane with
`RUNTIME_BACKEND=k8s`: every bot and every agent is its own Kubernetes workload (a bare Pod
per dispatch), so capacity is your cluster's scheduler, not a bigger box — built multi-tenant and
multiuser from the start. One compliance rule when you go multiuser: other users' turns must run
on an API key (Commercial Terms), never a personal subscription credential — the
licensing page spells out the boundary, and
Settings → Models enforces per-user/global credential resolution. K8s backend status is tracked
honestly in Status.
🏠 Deploy & configure
`make all` brings up the full stack via Docker Compose on one Linux host — each service in its own
container, bound to loopback:
| Service | Role |
|---|---|
| gateway `:18056` | the one front door — auth, scopes, routing |
| terminal `:13000` | the web workbench (proxies `/ws` → gateway) |
| meeting-api | bots, transcripts, recordings |
| agent-api | the agent control plane — dispatch, chat, routines, events |
| runtime | spawns bot + agent containers on demand |
| admin-api · redis · postgres · minio | keys · bus + scheduler · metadata · object storage (recordings + workspaces) |
- Runtime backend — `RUNTIME_BACKEND=docker` (default) or `k8s` (a Pod per dispatch).
- Transcription is a separate GPU unit — `make all` runs GPU-free; stand up the STT service
(faster-whisper, OpenAI-compatible) from `deploy/transcription` on any GPU box and point `.env` at it.
Or use a free hosted token at vexa.ai/account while testing.
- Bring your own inference — point the agent at your own LLM endpoint; no inference leaves the network.
- Air-gapped — everything in-VPC, zero egress — the posture the regulated verticals require.
- Targets — `make all` (pulls) · `make dev` (builds from this checkout) · `make lite` ·
`make probe` (full-journey smoke) · `make down` · `make help`. Expose the Terminal via a TLS reverse proxy for
production; full guide in the docs.
🆚 How Vexa is different
The crowded "AI second brain / self-hosted knowledge base" space is full of excellent tools for
reasoning over documents you *already have*. None of them join a live meeting — they consume
transcripts other tools produced. That's the whole point: **capture is the moat, and it sits
upstream of where a document-RAG tool's architecture even starts.**
Against the tools developers actually weigh for meeting capture:
| Capability | Vexa | Hosted APIs (e.g. Recall.ai) | DIY (Whisper + your own bot) |
|---|---|---|---|
| Self-hosted / own your data | ✅ | ❌ their cloud | ✅ |
| Real-time transcript API | ✅ | ✅ | 🟡 build it |
| Joins Meet + Teams + Zoom + Jitsi | ✅ 3 production · 🟡 Jitsi | 🟡 varies | ❌ enormous effort |
| Speaker attribution | ✅ | ✅ | 🟡 build it |
| Knowledge as files you own | ✅ | ❌ | 🟡 build it |
| Agents over your workspace | ✅ | ❌ | ❌ |
| Open source | ✅ Apache-2.0 | ❌ | ✅ |
Vexa is the one combination the others don't offer: a **permissively-licensed (Apache-2.0)
meeting-bot-API server that is self-hosted × real-time × multi-platform × knowledge-you-own.**
And it's *complementary* to the document-RAG and "second brain" tools — feed them Vexa's clean,
attributed transcripts and let them do what they're good at.
The full field — including Attendee (the other
meeting-bot API, source-available under the Elastic License 2.0, which does not permit providing
it to third parties as a hosted or managed service) and the local-notetaker tools — is mapped
honestly, trade-offs and all, in How Vexa compares.
🏦 For regulated enterprises
For banks, healthcare, government, and anyone in a regulated industry, the meeting-AI question
isn't "which cloud" — it's "how do we get this without a cloud." Vexa is **air-gapped meeting
intelligence** — the sovereign alternative to Microsoft Copilot — built for exactly that buyer.
You don't compete with a notes app here — you replace Microsoft 365 Copilot and **Zoom AI
Companion** on the axes they structurally can't move:
| Microsoft 365 Copilot / Zoom AI Companion | Vexa | |
|---|---|---|
| Deployment | Vendor cloud only | Your cloud, your VPC, or fully air-gapped |
| Models | Vendor-hosted, fixed | Bring your own — local or hosted LLMs |
| Commercial model | Rented, per-seat subscription | Owned — Apache-2.0, no per-seat tax |
| Adaptable | Generic; no custom vocabulary; vendor roadmap queue | Your engineers extend it directly — domain vocabulary, underserved languages, custom workflows |
| Meeting platforms | Teams-only / Zoom-only | Meet + Teams + Zoom (+ Jitsi, live validation pending) |
| Data control | Transits the vendor's cloud | Never leaves your perimeter |
| Extensibility | Closed black box | Open source, API-first |
What that means in practice:
- Air-gapped — fully offline, your infrastructure, your models. Nothing phones home.
- Adaptive — your engineers implement requirements directly: domain vocabulary, underserved
languages, custom workflows. No vendor feature queue.
- Owned, not rented — deploy once, extend without asking permission. No per-seat tax.
- Scales inside your walls — thousands of isolated agents in parallel on Docker or your
Kubernetes/OpenShift cluster.
Evaluate it for your org — the artifacts a security review asks for, in this repo:
| Artifact | What it answers |
|---|---|
| `architecture.calm.json` | machine-readable architecture (FINOS CALM) — every service and data flow, drift-gated in CI |
| `SECURITY.md` | how to report a vulnerability |
| `security-insights.yml` | OpenSSF Security Insights manifest |
| `license-exceptions.json` | license gating: Category-A permissive deps, exceptions explicit |
| `LICENSE` | Apache-2.0 |
Full review page: Security & compliance in the docs.
> Regulated banks and Fortune-500s run Vexa fully air-gapped on their own OpenShift and local LLMs today.
📡 API reference
Two APIs behind the gateway, authenticated with `X-API-Key`. Base URL: `http://localhost:18056`
(self-host) or `https://api.cloud.vexa.ai` (hosted).
Meetings API — capture; usable standalone:
| Method | Endpoint | Description |
|---|---|---|
| `POST` | `/bots` | Send a bot into a meeting (`platform`, `native_meeting_id`, `bot_name`, `language`, `task`, optional `transcribe_enabled` / `recording_enabled`) |
| `GET` | `/transcripts/{platform}/{native_meeting_id}` | Fetch the real-time transcript (poll while live) |
| `GET` | `/bots/status` | List running bots |
| `DELETE` | `/bots/{platform}/{native_meeting_id}` | Stop / remove the bot |
| `GET` | `/meetings` · `/recordings` | List meetings; list recordings (audio in your own storage) |
Agent API — the control plane, under the `/agent/*` prefix (identity is derived from your key, server-side):
| Method | Endpoint | Description |
|---|---|---|
| `POST` | `/agent/chat` | Chat over your workspace — streams SSE (`message-delta`, `tool-call`, `commit`, `done`, `error`) |
| `POST` | `/agent/invocations` | Dispatch a one-shot agent (e.g. a post-meeting report) |
| `POST` | `/agent/routines` | Create a scheduled (cron) agent routine |
| `POST` | `/agent/events` | Fire an integration event that dispatches an agent (e.g. email triage) |
| `GET` | `/agent/workspace/tree` · `/agent/workspace/file` | Browse and read your Markdown workspace |
`platform` ∈ `google_meet` · `teams` · `zoom` · `jitsi`. The gateway also serves an MCP endpoint
at `/mcp` for agent clients (docs). Full reference:
**docs.vexa.ai**.
> v0.12 note: live bot-control — `PUT /bots/{…}/config` (change language/task mid-call) and
> `POST /bots/{…}/speak` (TTS into the call) — plus the live-meeting copilot (`/agent/meeting/*`) and
> WebSocket streaming are not yet wired in the open-core stack and return `404` today. Send-a-bot, stop,
> status, transcripts, recordings, agent chat, routines, and events are live.
🗺️ Status & roadmap
Honest state of the 0.12 line (mirrors the status page — never aspirational):
| Capability | State |
|---|---|
| Bot joins Meet / Teams / Zoom | ✅ Production |
| Bot joins Jitsi Meet (meet.jit.si + self-hosted) | 🆕 Built & offline-proven; live validation pending |
| Real-time transcription (Whisper) + speaker attribution | ✅ Production — attribution is not guaranteed: the binder publishes an empty speaker rather than guessing (~4–7% of rows under heavy crosstalk) |
| Redis transcript streaming | ✅ Production |
| Recordings to your own object storage (MinIO) | ✅ Available |
| Runtime — Docker backend (container per workload) | ✅ Production |
| Agent chat / routines / events over your workspace | ✅ Built & proven live |
| Workspace — git Markdown / OKF `kg/` bundle | 🟡 core proven; bucket-backed store landing |
| Runtime — Kubernetes backend (Pod per dispatch) | ✅ Lifecycle + per-mount isolation; Helm in `deploy/helm` |
| Live-meeting copilot (cards as the call runs) | 🔵 Next |
| Calendar sync (ICS) · planned meetings · scheduled auto-join | ✅ Production |
| Shared workspaces & shared meetings (invites, real-time feed) | ✅ Built & proven live |
| Agent chat during a live meeting (live transcript + workspace in context) | ✅ Built & proven live |
| WebSocket transcript multiplex | 🔵 Planned (poll today) |
| At-rest encryption (workspace · transcript · tokens) | 🔵 Planned |
| Mid-call bot config / speak | 🔵 Returns 404 in open-core |
✅ Production · 🟡 In progress · 🔵 Planned
🤝 Community & contributing
- Docs — docs.vexa.ai
- Discord — discord.gg/Ga9duGkVz9
- Roadmap — the board, grouped by contributor
lane, with milestones as the version gates.
- Contributing — how delivery works: prepared issues
with acceptance tables that *guarantee* merge, and human validation credited as a first-class
contribution (one page, law and how-to together).
- Contributor rights — one rights choice plus DCO for individuals;
private, head-bound authorization when an employer or client owns the work.
- Issues & PRs — welcome. See `SECURITY.md` to report vulnerabilities.
- Obsidian: obsidian-vexa-bridge turns completed meetings into Obsidian notes or a knowledge graph, a third-party adapter; see the docs.
Vexa is built in the open. If you self-host it, extend it, or run it air-gapped somewhere interesting,
we'd love to hear about it.
📄 License
Apache-2.0. Own it, run it, fork it, ship it. It's an investment, not a rental.
Frequently asked questions
What is vexa?
vexa is Open-source meeting transcription API for Google Meet, Microsoft Teams & Zoom. Auto-join bots, real-time WebSocket transcripts, MCP server for AI agents. Self-host or use hosted SaaS.
How do I install vexa?
Open the GitHub repository and follow its README. Most MCP servers are added to your client's MCP config, then called by your agent.
Is vexa open source?
Yes — it is hosted on GitHub at https://github.com/vexa-ai/vexa and has 2,744 stars.
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