Highlight (highlight.io)

Highlight (highlight.io) is the open-source, full-stack monitoring platform — session replay, error monitoring, logging, distributed tracing, and metrics in a single tool. Built on OpenTelemetry, rrweb, and ClickHouse, Highlight correlates server-side spans and logs back to the originating browser session so engineers can move from a customer report to the exact line of code in one click. Available as a hosted SaaS on three commercial tiers (Free / Pay-as-you-go / Business / Enterprise) and as a fully open-source self-hosted deployment (Dev / Hobby / Enterprise) under Apache 2.0.

7 APIs 19 Features

ObservabilitySession ReplayError MonitoringAPMLoggingTracingOpenTelemetryOpen SourceFrontend MonitoringFull Stack Monitoring

APIs

Highlight OTLP Traces API

Native OpenTelemetry Protocol (OTLP) HTTP/JSON ingestion endpoint for distributed traces. Accepts standard OTLP `ResourceSpans` payloads at `https://otel.highlight.io/v1/traces`...

Highlight OTLP Logs API

Native OpenTelemetry Protocol (OTLP) HTTP/JSON ingestion endpoint for structured logs at `https://otel.highlight.io/v1/logs`. Supports severity levels, trace/span correlation, a...

Highlight OTLP Metrics API

Beta OpenTelemetry Protocol (OTLP) HTTP/JSON ingestion endpoint for metrics at `https://otel.highlight.io/v1/metrics`. Accepts gauges, sums, histograms, and exponential histogra...

Highlight Session Ingestion API

GraphQL-over-HTTP session replay ingestion endpoint at `https://pub.highlight.io` used by the `highlight.run` browser SDK to upload rrweb DOM snapshots, console/network recordin...

Highlight Private GraphQL API

Internal GraphQL API that powers the Highlight dashboard at `https://pri.highlight.io`. Used to list, search, and manage workspaces, projects, sessions, errors, logs, traces, da...

Highlight Webhooks API

Outbound webhooks delivered when Highlight alerts fire. POST JSON payload to a customer-supplied URL with alert metadata (name, type, count), error/session/log/metric context, p...

Highlight Self-Hosted Deployment

Self-hosted deployment of the open-source Highlight stack. Three tiers — Dev (single-host docker-compose), Hobby (single-host Docker for low-volume production), and Enterprise (...

Collections

Highlight OTLP Logs API

POSTMAN

Highlight OTLP Metrics API

POSTMAN

Highlight OTLP Traces API

POSTMAN

Highlight Session Ingestion API

POSTMAN

Highlight OTLP Logs API

OPEN

Highlight OTLP Metrics API

OPEN

Highlight OTLP Traces API

OPEN

Highlight Session Ingestion API

OPEN

Highlight Webhooks API

OPEN

Arazzo Workflows

Highlight Backend Error Report

Record a backend error as an OTLP error span and a matching error log so Highlight groups it into an error group.

ARAZZO

Highlight Backend Session Payload

Mark the backend as set up for a project, then push backend errors and logs against a session secure id.

ARAZZO

Highlight Browser Session Lifecycle

Initialize a browser session, identify its user, then push a recording payload using the returned session secure id.

ARAZZO

Highlight Correlated Backend Telemetry Export

Export traces, then logs, then metrics for the same project and trace so backend signals correlate in Highlight.

ARAZZO

Highlight Frontend Error Capture

Open a browser session and push a payload of frontend errors so Highlight groups them against the replay.

ARAZZO

Highlight Fullstack Error Correlation

Open a session, push a frontend error, then push a backend error keyed to the same session so both group against one replay.

ARAZZO

Highlight Fullstack Session Correlation

Open a browser session, then emit a backend OTLP span tagged with that session id so frontend replay and backend trace correlate.

ARAZZO

Highlight Logs and Metrics Batch

Submit a batch of OTLP logs and then a batch of OTLP metrics for the same Highlight project in one pass.

ARAZZO

Highlight Session Feedback Capture

Open a session, attach searchable session properties, then record end-user feedback against that session.

ARAZZO

Highlight Session Track Event

Open a session, attach track-event properties to it, then flush a recording payload.

ARAZZO

GraphQL

Highlight (highlight.io) GraphQL API

GraphQL-over-HTTP session replay ingestion endpoint at `https://pub.highlight.io` used by the `highlight.run` browser SDK to upload rrweb DOM snapshots, console/network recordin...

GRAPHQL

Pricing Plans

Highlight Io Plans Pricing

6 plans

PLANS

Rate Limits

Highlight Io Rate Limits

7 limits

RATE LIMITS

FinOps

Highlight Io Finops

FINOPS

Features

Session replay built on rrweb with canvas, iframe, and cross-origin support

Error monitoring with custom grouping, GitHub-issue linking, sourcemap support, and alerting

Logging with full-text search, pattern detection, and ClickHouse-backed sub-second queries

Distributed tracing with OpenTelemetry-native ingestion and waterfall visualization

Metrics (beta) with dashboards, monitors, and SQL editor

Native OTLP HTTP/JSON ingestion at otel.highlight.io for traces, logs, and metrics

Frontend correlation — server spans/logs join the originating browser session via highlight.session_id

AI-generated session insights and weekly digests

Webhook destinations for alerts (Error, Session, User, Log, Trace, Metric monitors)

25+ first-party integrations including Slack, Discord, Microsoft Teams, GitHub, Jira, Linear, ClickUp, Vercel, LaunchDarkly, Grafana, Amplitude, Mixpanel, Segment

Browser SDKs for React, Next.js, Remix, Vue, Angular, Gatsby, SvelteKit, Electron, React Native (beta)

Server SDKs for Node.js, Python, Go, Ruby, Rust, Elixir, Java, PHP, C# .NET

Hosting provider SDKs for AWS Lambda, Cloudflare Workers, Vercel, Firebase, Azure Functions, GCP

{"Privacy controls (`privacySetting" => "strict | default | none`) with PII redaction"}

100% open source under Apache 2.0 (with separate commercial license for `highlight.io/` and `enterprise/` directories)

Self-hostable in three tiers — Dev (docker-compose), Hobby (single-host Docker), Enterprise (Kubernetes)

Powered by ClickHouse, Kafka, OpenTelemetry Collector, and Postgres

SOC 2 Type II, HIPAA, and ISO 27001 attestations available on the hosted offering

9,000+ GitHub stars; active CNCF-style community with 200+ contributors

GitHubOrganization

Sources

opencollection: 1.0.0
info:
  name: Highlight Webhooks API
  version: '1.0'
items:
- info:
    name: Webhooks
    type: folder
  items:
  - info:
      name: Receive Highlight Alert Webhook
      type: http
    http:
      method: POST
      url: https://example.com/
      body:
        type: json
        data: '{}'
    docs: 'Delivered when an alert subscription matches. The customer endpoint should validate the optional shared-secret
      header (planned) and respond with `2xx` within 10 seconds to avoid retries.

      '
bundled: true