# segi

> Lightweight error monitoring + session recording + uptime + PM2 monitoring for
> Next.js, NestJS, and browser JavaScript apps. One project key, one dashboard.

Hosted at https://segi.extn.ai. Ingest at https://segiapi.extn.ai. CDN bundle at
https://cdn.extn.ai/segi/segi.min.js.

This index follows the llms.txt convention (https://llmstxt.org). Each file below
is a focused, copy-pasteable integration guide for one feature. Fetch only what
you need.

## Functional guides

- [Error monitoring](https://segi.extn.ai/llms/error-monitoring.txt): Browser /
  Next.js / NestJS SDKs, project keys, auto-capture vs manual, scrubbing, common
  errors.
- [Session recording + heatmap](https://segi.extn.ai/llms/session-recording.txt):
  DOM replay, click + scroll heatmap, masking, plan-gated quota,
  per-project on/off toggle.
- [Health checks (uptime)](https://segi.extn.ai/llms/health-checks.txt):
  Per-project HTTP probes, status classification (UP / DOWN / TEXT_MISMATCH /
  ERROR), interval + timeout + headers.
- [PM2 monitoring](https://segi.extn.ai/llms/pm2-monitoring.txt): Agent script,
  ingest endpoint, stale-instance detection, dashboard view.

## MCP servers

- `@extn/segi-mcp-nextjs` — exposes `get_install_command`,
  `get_required_env_vars`, `get_setup_files`, `get_test_snippets`,
  **`get_session_recording_setup`**, `get_session_recording_test_snippet`.
  Connect: `claude mcp add segi-nextjs -- npx -y @extn/segi-mcp-nextjs`
- `@extn/segi-mcp-nestjs` — exposes `get_install_command`,
  `get_required_env_vars`, `get_setup_files`, `get_test_snippet`,
  **`get_session_recording_info`** (server-side note + cross-ref to the right
  client MCP). Connect: `claude mcp add segi-nestjs -- npx -y @extn/segi-mcp-nestjs`

## SDKs (npm)

Minimum versions for session-recording (DOM replay + heatmap):

- `@extn/segi-js` ≥ **0.2.11** — browser SDK + optional `/replay` submodule.
  The replay code is tree-shakeable and dynamic-imported. Use the latest
  release; earlier 0.2.x versions have known capture bugs on Next.js 16 +
  React 19 + Tailwind v4 stacks.
- `@extn/segi-nextjs` ≥ **0.2.8** — Next.js wrapper + `/replay`
  `<SegiReplayProvider>`. Idempotent; the replay module is dynamic-imported so
  non-replay pages pay zero bundle cost.
- `@extn/segi-nestjs` ≥ **0.2.0** — NestJS module + global exception
  filter. Server-side only; session recording is browser-only.

## Optional

- [Marketing pricing page](https://segi.extn.ai/pricing) — live plan limits.
- [Terms of service](https://segi.extn.ai/tnc) — required-consent doc #1 at
  card-add.
- [Payment & refund terms](https://segi.extn.ai/payment-terms) — required-consent
  doc #2 at card-add.
- [Billing terms (cardholder mandate)](https://segi.extn.ai/billing-terms) —
  required-consent doc #3 at card-add.
- [Public docs](https://segi.extn.ai/docs) — full per-feature reference.