@getoncall/node

Server-side error monitoring for Node — with plain-English diagnoses and verified fix PRs.

OnCall watches your backend, catches the exceptions your users actually hit, explains them in plain English (no stack-trace archaeology), and — when you approve — opens a pull request that fixes the bug and confirms the fix held in production. Built for the apps people ship with Lovable, Bolt, v0, Cursor, and Replit.

• 🟢 Zero dependencies, tiny, framework-agnostic
• 🧩 First-class Express, Hono, Next.js, and Deno adapters
• 🔒 Uses your secret ingest key (onc_sk_…) from an env var — never a public key

Install — just ask your agent

In Cursor, Claude, Lovable, v0, or any AI editor, paste this (swap in your key):

Add OnCall server-side monitoring to this app: install @getoncall/node, call initOncall({ key: process.env.ONCALL_SECRET_KEY }) once at startup, and register the framework error handler after my routes. Set ONCALL_SECRET_KEY to onc_sk_your_secret_key.

Connect the OnCall MCP server (npx @getoncall/mcp) and your agent installs and verifies it without you touching the code.

Install

npm install @getoncall/node

Start OnCall at boot

import { initOncall } from "@getoncall/node";

initOncall({
  key: process.env.ONCALL_SECRET_KEY!, // your onc_sk_… secret key
  environment: process.env.NODE_ENV,
});

Unhandled errors are now captured automatically. Add the framework adapter to catch request errors with route + status context.

Express

import { oncallErrorHandler } from "@getoncall/node/express";
// ...after your routes...
app.use(oncallErrorHandler());

Hono

import { oncallErrorHandler } from "@getoncall/node/hono";
app.onError(oncallErrorHandler());

Capture manually

import { captureException, flush } from "@getoncall/node";

try {
  await chargeCard(order);
} catch (err) {
  captureException(err, { route: "/checkout", userId: order.userId });
}

// before a serverless function or script exits:
await flush();

Where do I get a key?

Create a project at intaglio.io and copy the secret ingest key (onc_sk_…) from the install screen. Store it in ONCALL_SECRET_KEY — it authenticates your server, so keep it out of source control.

The rest of the family

| Package | For | |---|---| | @getoncall/react | Browser errors in React apps | | @getoncall/next | Next.js App Router (client + server) | | @getoncall/cli | npx @getoncall/cli init — one command | | @getoncall/mcp | Let your AI agent install OnCall for you |

Links

• 🌐 Dashboard & docs: intaglio.io
• 🐙 Source: github.com/Booger-Aids/oncall

MIT © OnCall