v0.9 beta · early access

One SDK. Events,
errors, flags, sessions.

One SDK for custom events, runtime errors, feature flags, and session context — correlated in a single hosted platform built for shipping teams. No stitching separate tools together.

Start free See pricing

No credit card100K events/mo free foreverNo per-seat billing

1 SDK

Events, errors, flags, and identity from a single install.

~12kb

Browser SDK gzipped. No telemetry tax on your bundle.

< 5min

From npm install to first event in the dashboard.

$0 seats

No per-seat pricing. Bring your whole team and pay for usage.

— What's inside

Four surfaces. One pipeline.

Most teams stitch analytics, error tracking, flags, and sessions across four vendors. Emit Vision normalizes them into a single envelope so you can pivot from a spike to the user who hit it without leaving the page.

Product analytics

Capture custom events with the shape that fits your domain. Slice by environment, release, user, or any tag you attach at send time.

Typed event schemas with Zod-backed validation
ClickHouse-backed aggregates that stay fast at scale
URL-shareable filters across overview, events, and errors

Error tracking

Frontend errors with deterministic fingerprinting, grouped by signature, with handled/unhandled distinction and release correlation built in.

Grouped views: first seen, last seen, affected users
Normalized stacks with raw payload for debugging
Which release caused this? Answered in one click

Feature flags

Deterministic flag evaluation that snapshots variants into every event, so cohort analysis and A/B reads come for free with your telemetry.

Percentage rollouts and environment scoping
Exposure events emitted on first evaluation per session
Variant context attached to every event and error

Session context

A timeline of what happened before an error, scoped to the session or user that hit it. Stop reproducing bugs and start watching them.

Session ID and user identity propagated automatically
Recursive sensitive-key scrubbing before storage
Privacy-aware by default — no PII unless you send it

— Add one SDK

From npm install to first event
in under five minutes.

A single TypeScript SDK covers manual events, manual errors, optional global error capture, and identity. Initialize it once and forget it.

$ pnpm add @emit-vision/sdk-js
# or: npm install @emit-vision/sdk-js

import { init } from '@emit-vision/sdk-js';

init({
  dsn: process.env.EMIT_VISION_DSN,
  environment: 'production',
  release: '[email protected]',
  autoCapture: {
    errors: true,
    unhandledRejections: true,
  },
});

import { captureEvent, identify } from '@emit-vision/sdk-js';

identify({ id: user.id, email: user.email });

captureEvent('checkout.completed', {
  cents: 4900,
  plan: 'pro',
  tags: { source: 'paywall-v2' },
});

— Pricing

Honest pricing that scales with usage, not seats.

Three tiers. No per-seat billing. No surprises when your traffic doubles.

Hobby

For side projects and pre-revenue apps.

$0/month

100K events/month included
7-day retention
1 project, 1 environment
Community support

Start free

Pro

For shipping teams and growing SaaS.

$29/month

5M events/month included
30-day retention
Unlimited projects & environments
Feature flags & release tracking
Email support, 1 business day

Join beta

Team

For org-wide rollouts with audit and SSO.

$99/month

25M events/month included
90-day retention
SSO (OIDC) and audit logs
Roles, invites, and per-project ACLs
Priority support, 4-hour first response