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None of the AI auto-instrumentations work with Sentry Bun #19696

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None of the AI auto-instrumentations work with Sentry Bun#19696
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s1gr1d
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BugBun

Description

@vjancik
vjancik
opened on Mar 8, 2026

Is there an existing issue for this?

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/bun

SDK Version

10.42.0

Framework Version

No response

Link to Sentry event

No response

Reproduction Example/SDK Setup

instrumentation.ts

import * as Sentry from '@sentry/bun';

if (!process.env.SENTRY_URL) {
    throw new Error('SENTRY_URL environment variable is not set');
}

Sentry.init({
    dsn: process.env.SENTRY_URL,
    // Send structured logs to Sentry
    enableLogs: true,
    // Tracing
    tracesSampleRate: 1.0, // Capture 100% of the transactions
    debug: true,
    integrations: [
        // Sentry.googleGenAIIntegration(),
        // Sentry.langChainIntegration(),
        // Sentry.langGraphIntegration(),
    ]
});

// This works so SENTRY_URL and project are setup correctly
// Sentry.logger.info("Sentry instrumentation initialized");

test.ts

/**
 * Minimal @google/genai test script for validating Sentry Google_GenAI instrumentation.
 *
 * Run via: bun run sentry:test
 *
 * Uses the same model as the general agent. Does NOT go through LangChain,
 * so a successful trace in Sentry means the issue is LangChain-specific.
 */
// import '../../src/infrastructure/instrumentation/sentry/instrumentation.ts';
import { GoogleGenAI } from "@google/genai";
import * as Sentry from "@sentry/bun";

if (!process.env.GOOGLE_API_KEY) {
    throw new Error("GOOGLE_API_KEY is not set");
}

const genai = new GoogleGenAI({ apiKey: process.env.GOOGLE_API_KEY });

console.log("Sending generateContent request...");

const response = await genai.models.generateContent({
    model: "gemini-3-flash-preview",
    contents: "Reply with exactly one word: hello",
});

console.log("Response:", response.text);

// Flush Sentry before the process exits so traces/spans are not dropped.
console.log("Flushing Sentry...");
await Sentry.flush(5000);
console.log("Done.");

Steps to Reproduce

bun run --preload instrumentation.ts test.ts
Or you can uncomment the instrumentation.ts import in test.ts and just do bun run test.ts

Expected Result

GenAI Traces should appear in the dashboard.
I also tried with Langchain and Langgraph, also didn't get picked up in my project.

Actual Result

$ bun --preload ./src/infrastructure/instrumentation/sentry/instrumentation.ts scripts/dev/sentry-genai-test.ts
Sentry Logger [log]: Initializing Sentry: process: 156874, thread: main.
Sentry Logger [log]: Cleared AI provider skip registrations
Sentry Logger [log]: Integration installed: InboundFilters
Sentry Logger [log]: Integration installed: FunctionToString
Sentry Logger [log]: Integration installed: LinkedErrors
Sentry Logger [log]: Integration installed: RequestData
Sentry Logger [log]: Integration installed: Console
Sentry Logger [log]: Integration installed: Http
Sentry Logger [log]: Integration installed: NodeFetch
Sentry Logger [log]: Integration installed: OnUncaughtException
Sentry Logger [log]: Integration installed: OnUnhandledRejection
Sentry Logger [log]: Integration installed: ContextLines
Sentry Logger [log]: Integration installed: Context
Sentry Logger [log]: Integration installed: Modules
Sentry Logger [log]: Integration installed: ProcessSession
Sentry Logger [log]: Integration installed: BunServer
Sentry Logger [log]: Integration installed: Express
Sentry Logger [log]: Integration installed: Fastify
Sentry Logger [log]: Integration installed: Graphql
Sentry Logger [log]: Integration installed: Hono
Sentry Logger [log]: Integration installed: Mongo
Sentry Logger [log]: Integration installed: Mongoose
Sentry Logger [log]: Integration installed: Mysql
Sentry Logger [log]: Integration installed: Mysql2
Sentry Logger [log]: Integration installed: Redis
Sentry Logger [log]: Integration installed: Postgres
Sentry Logger [log]: Integration installed: Prisma
Sentry Logger [log]: Integration installed: Hapi
Sentry Logger [log]: Integration installed: Koa
Sentry Logger [log]: Integration installed: Connect
Sentry Logger [log]: Integration installed: Tedious
Sentry Logger [log]: Integration installed: GenericPool
Sentry Logger [log]: Integration installed: Kafka
Sentry Logger [log]: Integration installed: Amqplib
Sentry Logger [log]: Integration installed: LruMemoizer
Sentry Logger [log]: Integration installed: LangChain
Sentry Logger [log]: Integration installed: LangGraph
Sentry Logger [log]: Integration installed: VercelAI
Sentry Logger [log]: Integration installed: OpenAI
Sentry Logger [log]: Integration installed: Anthropic_AI
Sentry Logger [log]: Integration installed: Google_GenAI
Sentry Logger [log]: Integration installed: PostgresJs
Sentry Logger [log]: Integration installed: Firebase
Sentry Logger [log]: SDK initialized from ESM
Sentry Logger [log]: @opentelemetry/api: Registered a global for diag v1.9.0.
Sentry Logger [log]: @opentelemetry/api: Registered a global for trace v1.9.0.
Sentry Logger [log]: @opentelemetry/api: Registered a global for propagation v1.9.0.
Sentry Logger [log]: @opentelemetry/api: Registered a global for context v1.9.0.
Sentry Logger [log]: @sentry/instrumentation-http Applying instrumentation patch for nodejs core module on require hook {
  module: "https",
}
Sentry Logger [log]: @opentelemetry_sentry-patched/instrumentation-http Applying instrumentation patch for nodejs core module on require hook {
  module: "https",
}
Sending generateContent request...
Response: Hello
Flushing Sentry...
Sentry Logger [log]: SpanExporter exported 0 spans, 0 spans are waiting for their parent spans to finish
Sentry Logger [log]: Flushing outcomes...
Sentry Logger [log]: No outcomes to send
Done.
Sentry Logger [log]: Flushing outcomes...
Sentry Logger [log]: No outcomes to send

Nothing is emitted.

Additional Context

Library version:
@google/[email protected]
@langchain/[email protected]
@langchain/[email protected]
@langchain/[email protected]

Bun version: 1.3.10
System: Ubuntu 25.10 (Linux 6.17.0-14-generic)

Very old maybe unrelated issue:
#14202

Priority

React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.

Activity

  1. vjancik
    added
    Bug
    on Mar 8, 2026
  2. getsantry
    added
    Waiting for: Product Owner
    on Mar 8, 2026

  3. linear-code commented on Mar 8, 2026

    @linear-code
    linear-codebot
    on Mar 8, 2026 – with Linear Code

    JS-1890

  4. getsantry
    added this to GitHub Issues with 👀 3on Mar 8, 2026
  5. getsantry
    moved this to Waiting for: Product Owner in GitHub Issues with 👀 3on Mar 8, 2026
  6. github-actions
    added
    Bun
    on Mar 8, 2026
  7. andreiborza
    self-assigned this
    on Mar 9, 2026
  8. linear-code
    assigned
    s1gr1d
    and unassigned
    andreiborza
    on Mar 9, 2026
  9. s1gr1d
    added a parent issue on Mar 9, 2026

  10. s1gr1d commented on Mar 9, 2026

    @s1gr1d
    s1gr1d
    on Mar 9, 2026
    Member

    Automatic instrumentation is currently not supported in Bun (also check out the tracking issue here).

    You can also manually instrument the package by wrapping it like it's documented here: https://docs.sentry.io/platforms/javascript/configuration/integrations/google-genai/

    We'll update the docs on that for Bun.

  11. getsantry
    removed
    Waiting for: Product Owner
    on Mar 9, 2026
  12. getsantry
    moved this from Waiting for: Product Owner to No status in GitHub Issues with 👀 3on Mar 9, 2026

  13. vjancik commented on Mar 9, 2026

    @vjancik
    vjancik
    on Mar 9, 2026
    Author

    Thank you! I didn't find the manual instrumentation option in the Bun docs.

  14. getsantry
    added
    Waiting for: Product Owner
    on Mar 9, 2026
  15. getsantry
    moved this to Waiting for: Product Owner in GitHub Issues with 👀 3on Mar 9, 2026
  16. s1gr1d
    changed the title [-]None of the auto-instrumentations work with Sentry Bun[/-] [+]None of the AI auto-instrumentations work with Sentry Bun[/+] on Mar 9, 2026

  17. s1gr1d commented on Mar 9, 2026

    @s1gr1d
    s1gr1d
    on Mar 9, 2026
    Member

    Yes, it's missing there but I created a PR to update that: getsentry/sentry-docs#16843

    Update: Docs are updated now: https://docs.sentry.io/platforms/javascript/guides/bun/configuration/integrations/google-genai/

  18. getsantry
    removed
    Waiting for: Product Owner
    on Mar 9, 2026
  19. getsantry
    moved this from Waiting for: Product Owner to No status in GitHub Issues with 👀 3on Mar 9, 2026
  20. s1gr1d
    added a commit that references this issue on Mar 12, 2026

    docs(js): Differentiate manual and automatic AI instrumentation (#16843)

    3284285

  21. andreiborza commented on May 21, 2026

    @andreiborza
    andreiborza
    on May 21, 2026
    Member

    Closing this as docs are now clearer about it.

  22. andreiborza
    closed this as completedon May 21, 2026
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