cursor-plugin-sentry-sentry-nestjs-sdk

name	cursor-plugin-sentry-sentry-nestjs-sdk
description	Full Sentry SDK setup for NestJS. Use when asked to \"add Sentry to NestJS\", \"install @sentry/nestjs\", \"setup Sentry in NestJS\", or configure error monitoring, tracing, profiling, logging, metrics, crons, or AI monitoring for NestJS applications. Supports Express and Fastify adapters, GraphQL, microservices, WebSockets, and background jobs.
metadata	{"version":"0.1.0"}

All Skills > SDK Setup > NestJS SDK

Sentry NestJS SDK

Opinionated wizard that scans your NestJS project and guides you through complete Sentry setup.

Invoke This Skill When

• User asks to "add Sentry to NestJS" or "setup Sentry" in a NestJS app
• User wants error monitoring, tracing, profiling, logging, metrics, or crons in NestJS
• User mentions @sentry/nestjs or Sentry + NestJS
• User wants to monitor NestJS controllers, services, guards, microservices, or background jobs

Note: SDK versions and APIs below reflect @sentry/nestjs 10.x (NestJS 8–11 supported). Always verify against docs.sentry.io/platforms/node/guides/nestjs/ before implementing.

---

Phase 1: Detect

Run these commands to understand the project before making recommendations:

# Confirm NestJS project
grep -E '"@nestjs/core"' package.json 2>/dev/null

# Check NestJS version
node -e "console.log(require('./node_modules/@nestjs/core/package.json').version)" 2>/dev/null

# Check existing Sentry
grep -i sentry package.json 2>/dev/null
ls src/instrument.ts 2>/dev/null
grep -r "Sentry.init\|@sentry" src/main.ts src/instrument.ts 2>/dev/null

# Check for existing Sentry DI wrapper (common in enterprise NestJS)
grep -rE "SENTRY.*TOKEN|SentryProxy|SentryService" src/ libs/ 2>/dev/null

# Check for config-class-based init (vs env-var-based)
grep -rE "class SentryConfig|SentryConfig" src/ libs/ 2>/dev/null

# Check if SentryModule.forRoot() is already registered in a shared module
grep -rE "SentryModule\.forRoot|SentryProxyModule" src/ libs/ 2>/dev/null

# Detect HTTP adapter (default is Express)
grep -E "FastifyAdapter|@nestjs/platform-fastify" package.json src/main.ts 2>/dev/null

# Detect GraphQL
grep -E '"@nestjs/graphql"|"apollo-server"' package.json 2>/dev/null

# Detect microservices
grep '"@nestjs/microservices"' package.json 2>/dev/null

# Detect WebSockets
grep -E '"@nestjs/websockets"|"socket.io"' package.json 2>/dev/null

# Detect task queues / scheduled jobs
grep -E '"@nestjs/bull"|"@nestjs/bullmq"|"@nestjs/schedule"|"bullmq"|"bull"' package.json 2>/dev/null

# Detect databases
grep -E '"@prisma/client"|"typeorm"|"mongoose"|"pg"|"mysql2"' package.json 2>/dev/null

# Detect AI libraries
grep -E '"openai"|"@anthropic-ai"|"langchain"|"@langchain"|"@google/generative-ai"|"ai"' package.json 2>/dev/null

# Check for companion frontend
ls -d ../frontend ../web ../client ../ui 2>/dev/null

What to note:

• Is @sentry/nestjs already installed? If yes, check if instrument.ts exists and Sentry.init() is called — may just need feature config.
• Sentry DI wrapper detected? → The project wraps Sentry behind a DI token (e.g. SENTRY_PROXY_TOKEN) for testability. Use the injected proxy for all runtime Sentry calls (startSpan, captureException, withIsolationScope) instead of importing @sentry/nestjs directly in controllers, services, and processors. Only instrument.ts should import @sentry/nestjs directly.
• Config class detected? → The project uses a typed config class for Sentry.init() options (e.g. loaded from YAML or @nestjs/config). Any new SDK options must be added to the config type — do not hardcode values that should be configurable per environment.
• SentryModule.forRoot() already registered? → If it's in a shared module (e.g. a Sentry proxy module), do not add it again in AppModule — this causes duplicate interceptor registration.
• Express (default) or Fastify adapter? Express is fully supported; Fastify works but has known edge cases.
• GraphQL detected? → SentryGlobalFilter handles it natively.
• Microservices detected? → Recommend RPC exception filter.
• Task queues / @nestjs/schedule? → Recommend crons.
• AI libraries? → Auto-instrumented, zero config.
• Prisma? → Requires manual prismaIntegration().
• Companion frontend? → Triggers Phase 4 cross-link.

---

Phase 2: Recommend

Based on what you found, present a concrete proposal. Don't ask open-ended questions — lead with a recommendation:

Always recommended (core coverage):

• ✅ Error Monitoring — captures unhandled exceptions across HTTP, GraphQL, RPC, and WebSocket contexts
• ✅ Tracing — auto-instruments middleware, guards, pipes, interceptors, filters, and route handlers

Recommend when detected:

• ✅ Profiling — production apps where CPU performance matters (@sentry/profiling-node)
• ✅ Logging — structured Sentry Logs + optional console capture
• ✅ Crons — @nestjs/schedule, Bull, or BullMQ detected
• ✅ Metrics — business KPIs or SLO tracking
• ✅ AI Monitoring — OpenAI/Anthropic/LangChain/etc. detected (auto-instrumented, zero config)

Recommendation matrix:

Feature	Recommend when...	Reference
Error Monitoring	Always — non-negotiable baseline	${SKILL_ROOT}/references/error-monitoring.md
Tracing	Always — NestJS lifecycle is auto-instrumented	${SKILL_ROOT}/references/tracing.md
Profiling	Production + CPU-sensitive workloads	${SKILL_ROOT}/references/profiling.md
Logging	Always; enhanced for structured log aggregation	${SKILL_ROOT}/references/logging.md
Metrics	Custom business KPIs or SLO tracking	${SKILL_ROOT}/references/metrics.md
Crons	@nestjs/schedule, Bull, or BullMQ detected	${SKILL_ROOT}/references/crons.md
AI Monitoring	OpenAI/Anthropic/LangChain/etc. detected	${SKILL_ROOT}/references/ai-monitoring.md

Propose: "I recommend Error Monitoring + Tracing + Logging. Want Profiling, Crons, or AI Monitoring too?"

---

Phase 3: Guide

Install

# Core SDK (always required — includes @sentry/node)
npm install @sentry/nestjs

# With profiling support (optional)
npm install @sentry/nestjs @sentry/profiling-node

⚠️ Do NOT install @sentry/node alongside @sentry/nestjs — @sentry/nestjs re-exports everything from @sentry/node. Installing both causes duplicate registration.

Three-File Setup (Required)

NestJS requires a specific three-file initialization pattern because the Sentry SDK must patch Node.js modules (via OpenTelemetry) before NestJS loads them.

Before creating new files, check Phase 1 results:

• If instrument.ts already exists → modify it, don't create a new one.
• If a config class drives Sentry.init() → read options from the config instead of hardcoding env vars.
• If a Sentry DI wrapper exists → use it for runtime calls instead of importing @sentry/nestjs directly in services/controllers.

Step 1: Create src/instrument.ts

import * as Sentry from "@sentry/nestjs";
// Optional: add profiling
// import { nodeProfilingIntegration } from "@sentry/profiling-node";

Sentry.init({
  dsn: process.env.SENTRY_DSN,
  environment: process.env.SENTRY_ENVIRONMENT ?? "production",
  release: process.env.SENTRY_RELEASE,
  sendDefaultPii: true,

  // Tracing — lower to 0.1–0.2 in high-traffic production
  tracesSampleRate: 1.0,

  // Profiling (requires @sentry/profiling-node)
  // integrations: [nodeProfilingIntegration()],
  // profileSessionSampleRate: 1.0,
  // profileLifecycle: "trace",

  // Structured logs (SDK ≥ 9.41.0)
  enableLogs: true,
});

Config-driven Sentry.init(): If Phase 1 found a typed config class (e.g. SentryConfig), read options from it instead of using raw process.env. This is common in NestJS apps that use @nestjs/config or custom config loaders:

import * as Sentry from "@sentry/nestjs";
import { loadConfiguration } from "./config";

const config = loadConfiguration();

Sentry.init({
  dsn: config.sentry.dsn,
  environment: config.sentry.environment ?? "production",
  release: config.sentry.release,
  sendDefaultPii: config.sentry.sendDefaultPii ?? true,
  tracesSampleRate: config.sentry.tracesSampleRate ?? 1.0,
  profileSessionSampleRate: config.sentry.profilesSampleRate ?? 1.0,
  profileLifecycle: "trace",
  enableLogs: true,
});

When adding new SDK options (e.g. sendDefaultPii, profileSessionSampleRate), add them to the config type so they can be configured per environment.

Step 2: Import instrument.ts FIRST in src/main.ts

// instrument.ts MUST be the very first import — before NestJS or any other module
import "./instrument";

import { NestFactory } from "@nestjs/core";
import { AppModule } from "./app.module";

async function bootstrap() {
  const app = await NestFactory.create(AppModule);

  // Enable graceful shutdown — flushes Sentry events on SIGTERM/SIGINT
  app.enableShutdownHooks();

  await app.listen(3000);
}
bootstrap();

Why first? OpenTelemetry must monkey-patch http, express, database drivers, and other modules before they load. Any module that loads before instrument.ts will not be auto-instrumented.

Step 3: Register SentryModule and SentryGlobalFilter in src/app.module.ts

import { Module } from "@nestjs/common";
import { APP_FILTER } from "@nestjs/core";
import { SentryModule, SentryGlobalFilter } from "@sentry/nestjs/setup";
import { AppController } from "./app.controller";
import { AppService } from "./app.service";

@Module({
  imports: [
    SentryModule.forRoot(), // Registers SentryTracingInterceptor globally
  ],
  controllers: [AppController],
  providers: [
    AppService,
    {
      provide: APP_FILTER,
      useClass: SentryGlobalFilter, // Captures all unhandled exceptions
    },
  ],
})
export class AppModule {}

What each piece does:

• SentryModule.forRoot() — registers SentryTracingInterceptor as a global APP_INTERCEPTOR, enabling HTTP transaction naming
• SentryGlobalFilter — extends BaseExceptionFilter; captures exceptions across HTTP, GraphQL (rethrows HttpException without reporting), and RPC contexts

⚠️ Do NOT register SentryModule.forRoot() twice. If Phase 1 found it already imported in a shared library module (e.g. a SentryProxyModule or AnalyticsModule), do not add it again in AppModule. Duplicate registration causes every span to be intercepted twice, bloating trace data.

⚠️ Two entrypoints, different imports:

• @sentry/nestjs → SDK init, capture APIs, decorators (SentryTraced, SentryCron, SentryExceptionCaptured)
• @sentry/nestjs/setup → NestJS DI constructs (SentryModule, SentryGlobalFilter)

Never import SentryModule from @sentry/nestjs (main entrypoint) — it loads @nestjs/common before OpenTelemetry patches it, breaking auto-instrumentation.

ESM Setup (Node ≥ 18.19.0)

For ESM applications, use --import instead of a file import:

// instrument.mjs
import * as Sentry from "@sentry/nestjs";

Sentry.init({
  dsn: process.env.SENTRY_DSN,
  tracesSampleRate: 1.0,
});

// package.json
{
  "scripts": {
    "start": "node --import ./instrument.mjs -r ts-node/register src/main.ts"
  }
}

Or via environment:

NODE_OPTIONS="--import ./instrument.mjs" npm run start

Exception Filter Options

Choose the approach that fits your existing architecture:

Option A: No existing global filter — use SentryGlobalFilter (recommended)

Already covered in Step 3 above. This is the simplest option.

Option B: Existing custom global filter — add @SentryExceptionCaptured() decorator

import { Catch, ExceptionFilter, ArgumentsHost } from "@nestjs/common";
import { SentryExceptionCaptured } from "@sentry/nestjs";

@Catch()
export class YourExistingFilter implements ExceptionFilter {
  @SentryExceptionCaptured() // Wraps catch() to auto-report exceptions
  catch(exception: unknown, host: ArgumentsHost): void {
    // Your existing error handling continues unchanged
  }
}

Option C: Specific exception type — manual capture

import { ArgumentsHost, Catch } from "@nestjs/common";
import { BaseExceptionFilter } from "@nestjs/core";
import * as Sentry from "@sentry/nestjs";

@Catch(ExampleException)
export class ExampleExceptionFilter extends BaseExceptionFilter {
  catch(exception: ExampleException, host: ArgumentsHost) {
    Sentry.captureException(exception);
    super.catch(exception, host);
  }
}

Option D: Microservice RPC exceptions

import { Catch, RpcExceptionFilter, ArgumentsHost } from "@nestjs/common";
import { Observable, throwError } from "rxjs";
import { RpcException } from "@nestjs/microservices";
import * as Sentry from "@sentry/nestjs";

@Catch(RpcException)
export class SentryRpcFilter implements RpcExceptionFilter<RpcException> {
  catch(exception: RpcException, host: ArgumentsHost): Observable<any> {
    Sentry.captureException(exception);
    return throwError(() => exception.getError());
  }
}

Decorators

@SentryTraced(op?) — Instrument any method

import { Injectable } from "@nestjs/common";
import { SentryTraced } from "@sentry/nestjs";

@Injectable()
export class OrderService {
  @SentryTraced("order.process")
  async processOrder(orderId: string): Promise<void> {
    // Automatically wrapped in a Sentry span
  }

  @SentryTraced()  // Defaults to op: "function"
  async fetchInventory() { ... }
}

@SentryCron(slug, config?) — Monitor scheduled jobs

import { Injectable } from "@nestjs/common";
import { Cron } from "@nestjs/schedule";
import { SentryCron } from "@sentry/nestjs";

@Injectable()
export class ReportService {
  @Cron("0 * * * *")
  @SentryCron("hourly-report", {
    // @SentryCron must come AFTER @Cron
    schedule: { type: "crontab", value: "0 * * * *" },
    checkinMargin: 2, // Minutes before marking missed
    maxRuntime: 10, // Max runtime in minutes
    timezone: "UTC",
  })
  async generateReport() {
    // Check-in sent automatically on start/success/failure
  }
}

Background Job Scope Isolation

Background jobs share the default isolation scope — wrap with Sentry.withIsolationScope() to prevent cross-contamination:

import * as Sentry from "@sentry/nestjs";
import { Injectable } from "@nestjs/common";
import { Cron, CronExpression } from "@nestjs/schedule";

@Injectable()
export class JobService {
  @Cron(CronExpression.EVERY_HOUR)
  handleCron() {
    Sentry.withIsolationScope(() => {
      Sentry.setTag("job", "hourly-sync");
      this.doWork();
    });
  }
}

Apply withIsolationScope to: @Cron(), @Interval(), @OnEvent(), @Processor(), and any code outside the request lifecycle.

Working with Sentry DI Wrappers

Some NestJS projects wrap Sentry behind a dependency injection token (e.g. SENTRY_PROXY_TOKEN) for testability and decoupling. If Phase 1 detected this pattern, use the injected service for all runtime Sentry calls — do not import @sentry/nestjs directly in controllers, services, or processors.

import { Controller, Inject } from "@nestjs/common";
import { SENTRY_PROXY_TOKEN, type SentryProxyService } from "./sentry-proxy";

@Controller("orders")
export class OrderController {
  constructor(
    @Inject(SENTRY_PROXY_TOKEN) private readonly sentry: SentryProxyService,
    private readonly orderService: OrderService,
  ) {}

  @Post()
  async createOrder(@Body() dto: CreateOrderDto) {
    return this.sentry.startSpan(
      { name: "createOrder", op: "http" },
      async () => this.orderService.create(dto),
    );
  }
}

Where direct @sentry/nestjs import is still correct:

• instrument.ts — always uses import * as Sentry from "@sentry/nestjs" for Sentry.init()
• Standalone scripts and exception filters that run outside the DI container

Verification

Add a test endpoint to confirm events reach Sentry:

import { Controller, Get } from "@nestjs/common";
import * as Sentry from "@sentry/nestjs";

@Controller()
export class DebugController {
  @Get("/debug-sentry")
  triggerError() {
    throw new Error("My first Sentry error from NestJS!");
  }

  @Get("/debug-sentry-span")
  triggerSpan() {
    return Sentry.startSpan({ op: "test", name: "NestJS Test Span" }, () => {
      return { status: "span created" };
    });
  }
}

Hit GET /debug-sentry and check the Sentry Issues dashboard within seconds.

For Each Agreed Feature

Walk through features one at a time. Load the reference, follow its steps, verify before moving on:

Feature	Reference file	Load when...
Error Monitoring	${SKILL_ROOT}/references/error-monitoring.md	Always (baseline)
Tracing	${SKILL_ROOT}/references/tracing.md	Always (NestJS routes are auto-traced)
Profiling	${SKILL_ROOT}/references/profiling.md	CPU-intensive production apps
Logging	${SKILL_ROOT}/references/logging.md	Structured log aggregation needed
Metrics	${SKILL_ROOT}/references/metrics.md	Custom KPIs / SLO tracking
Crons	${SKILL_ROOT}/references/crons.md	Scheduled jobs or task queues
AI Monitoring	${SKILL_ROOT}/references/ai-monitoring.md	OpenAI/Anthropic/LangChain detected

For each feature: Read ${SKILL_ROOT}/references/<feature>.md, follow steps exactly, verify it works.

---

Configuration Reference

Key Sentry.init() Options

Option	Type	Default	Purpose
dsn	string	—	SDK disabled if empty; env: SENTRY_DSN
environment	string	"production"	e.g., "staging"; env: SENTRY_ENVIRONMENT
release	string	—	e.g., "myapp@1.0.0"; env: SENTRY_RELEASE
sendDefaultPii	boolean	false	Include IP addresses and request headers
tracesSampleRate	number	—	Transaction sample rate; undefined disables tracing
tracesSampler	function	—	Custom per-transaction sampling (overrides rate)
tracePropagationTargets	Array<string|RegExp>	—	URLs to propagate sentry-trace/baggage headers to
profileSessionSampleRate	number	—	Continuous profiling session rate (SDK ≥ 10.27.0)
profileLifecycle	"trace"|"manual"	"trace"	"trace" = auto-start profiler with spans; "manual" = call startProfiler()/stopProfiler()
enableLogs	boolean	false	Send structured logs to Sentry (SDK ≥ 9.41.0)
ignoreErrors	Array<string|RegExp>

Environment Variables

Variable	Maps to	Notes
SENTRY_DSN	dsn	Used if dsn not passed to init()
SENTRY_RELEASE	release	Also auto-detected from git SHA, Heroku, CircleCI
SENTRY_ENVIRONMENT	environment	Falls back to "production"
SENTRY_AUTH_TOKEN	CLI/source maps	For npx @sentry/wizard@latest -i sourcemaps
SENTRY_ORG	CLI/source maps	Organization slug
SENTRY_PROJECT	CLI/source maps	Project slug

Auto-Enabled Integrations

These integrations activate automatically when their packages are detected — no integrations: [...] needed:

Auto-enabled	Notes
httpIntegration	Outgoing HTTP calls via http/https/fetch
expressIntegration	Express adapter (default NestJS)
nestIntegration	NestJS lifecycle (middleware, guards, pipes, interceptors, handlers)
onUncaughtExceptionIntegration	Uncaught exceptions
onUnhandledRejectionIntegration	Unhandled promise rejections
openAIIntegration	OpenAI SDK (when installed)
anthropicAIIntegration	Anthropic SDK (when installed)
langchainIntegration	LangChain (when installed)
graphqlIntegration	GraphQL (when graphql package present)
postgresIntegration	pg driver
mysqlIntegration	mysql / mysql2
mongoIntegration	MongoDB / Mongoose
redisIntegration	ioredis / redis

Integrations Requiring Manual Setup

Integration	When to add	Code
nodeProfilingIntegration	Profiling desired	import { nodeProfilingIntegration } from "@sentry/profiling-node"
prismaIntegration	Prisma ORM used	integrations: [Sentry.prismaIntegration()]
consoleLoggingIntegration	Capture console output	integrations: [Sentry.consoleLoggingIntegration()]
localVariablesIntegration	Capture local var values in errors	integrations: [Sentry.localVariablesIntegration()]

---

Verification

Test that Sentry is receiving events:

// Add a test endpoint (remove before production)
@Get("/debug-sentry")
getError() {
  throw new Error("My first Sentry error!");
}

Or send a test message without crashing:

import * as Sentry from "@sentry/nestjs";
Sentry.captureMessage("NestJS Sentry SDK test");

If nothing appears:

1. Set debug: true in Sentry.init() — prints SDK internals to stdout
2. Verify SENTRY_DSN env var is set in the running process
3. Check that import "./instrument" is the first line in main.ts
4. Confirm SentryModule.forRoot() is imported in AppModule
5. Check DSN format: https://<key>@o<org>.ingest.sentry.io/<project>

---

Phase 4: Cross-Link

After completing NestJS setup, check for a companion frontend missing Sentry:

ls -d ../frontend ../web ../client ../ui 2>/dev/null
cat ../frontend/package.json ../web/package.json 2>/dev/null \
  | grep -E '"react"|"svelte"|"vue"|"next"|"nuxt"'

If a frontend exists without Sentry, suggest the matching skill:

Frontend detected	Suggest skill
Next.js	sentry-nextjs-sdk
React	sentry-react-sdk
Svelte / SvelteKit	sentry-svelte-sdk
Vue / Nuxt	Use @sentry/vue — see docs.sentry.io/platforms/javascript/guides/vue/
React Native / Expo	sentry-react-native-sdk

---

Troubleshooting

Issue	Solution
Events not appearing	Set debug: true, verify SENTRY_DSN, check instrument.ts is imported first
Malformed DSN error	Format: https://<key>@o<org>.ingest.sentry.io/<project>
Exceptions not captured	Ensure SentryGlobalFilter is registered via APP_FILTER in AppModule
Auto-instrumentation not working	instrument.ts must be the first import in main.ts — before all NestJS imports
Profiling not starting	Requires tracesSampleRate > 0 + profileSessionSampleRate > 0 + @sentry/profiling-node installed
enableLogs not working	Requires SDK ≥ 9.41.0
No traces appearing	Verify tracesSampleRate is set (not undefined)
Too many transactions	Lower tracesSampleRate or use tracesSampler to drop health checks
Fastify + GraphQL issues	Known edge cases — see GitHub #13388; prefer Express for GraphQL
Background job events mixed	Wrap job body in Sentry.withIsolationScope(() => { ... })
Prisma spans missing	Add integrations: [Sentry.prismaIntegration()] to Sentry.init()
ESM syntax errors	Set registerEsmLoaderHooks: false (disables ESM hooks; also disables auto-instrumentation for ESM modules)
SentryModule breaks instrumentation	Must import from @sentry/nestjs/setup, never from @sentry/nestjs
RPC exceptions not captured	Add dedicated SentryRpcExceptionFilter (see Option D in exception filter section)
WebSocket exceptions not captured

Version Requirements

Feature	Minimum SDK Version
@sentry/nestjs package	8.0.0
@SentryTraced decorator	8.15.0
@SentryCron decorator	8.16.0
Event Emitter auto-instrumentation	8.39.0
SentryGlobalFilter (unified)	8.40.0
Sentry.logger API (enableLogs)	9.41.0
profileSessionSampleRate	10.27.0
Node.js requirement	≥ 18
Node.js for ESM --import	≥ 18.19.0
NestJS compatibility	8.x – 11.x