The SRE Platform With Claws.
Stop ignoring silent failures and malicious traffic. Grumpy tracks your bugs, monitors your uptime, blocks brute-force attacks, and delivers actionable AI triage directly to your Slack so your team can resolve issues instantly.
[CRITICAL] [Billing API] TypeError
GRUMPY SAYS:
A TypeError was triggered in the Billing API. The user_id variable is null instead of a valid string. Please verify the upstream authentication payload before invoking the Stripe SDK.
Code Context:
40: def process_payment(user_id: str):
41: user = get_user(user_id)
42: stripe.Charge.create(
customer=user.stripe_id
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Simple as it gets
Three steps. Two lines of code.
Install the SDK
pip install desicon-grumpy (or npm i desicon-grumpy) and drop two lines into your app. Done. No config files, no YAML nightmares.
Grumpy Watches
Every crash, malicious attack, and downtime event is intercepted in real-time. The WAF blocks threats instantly, while the Rescue Engine can auto-deploy patches to keep you online.
Get Alerted
Rich, contextual alerts land in Slack or Discord — in the persona your team prefers — with the exact code that broke, why it broke, and how to fix it.
Beat the Bot. Get Paid.
We don't just report bugs; we incentivize writing good code. If your team can survive 30 consecutive days without triggering a single unhandled exception, your next month of Grumpy is completely free. We dare you.
- Tracked automatically per project.
- Promotes a culture of stability.
- Zero manual claims—billing updates instantly.
Everything you need
Zero Config. High Impact.
- Zero-Config Setup.
Two lines of code. That is literally all it takes for us to start protecting your architecture. Drop the SDK in your app and instantly secure your stack.
- The Regression Engine.
If you "fix" a bug and it comes back the next day, Grumpy flags it as a regression and pings your Slack again to ensure critical issues don't slip through the cracks.
- Bring Your Own Key (BYOK).
We handle the ingestion, routing, and dashboards. You plug in your own OpenAI API key so we don’t have to pay for your tokens.
- The Grumpy Rescue Engine.
Optional runtime protection. Grumpy can generate and stage targeted runtime fixes to bridge the gap until your next deployment. You maintain full control over auto-apply rules.
- Grumpy Security Engine.
A lightweight Web Application Firewall. Grumpy passively intercepts SQL injections, XSS attacks, and brute-force logins with zero active polling.
- The Sensitivity Dialer.
Turn the dial from "Only Wake Me Up For Fatal Crashes" to "Warn Me About Every Single Deprecation Notice". You control the volume.
- Zero-Polling Uptime Monitoring
We don’t ping your server. Your server pings us. The SDK maintains a continuous heartbeat, alerting you the second your app goes offline.
- Instant AI Triage.
When it crashes, we walk up the stack trace, grab the context, and pass it to OpenAI to tell you exactly how you messed up.
- Omnichannel & Omnipresent.
Grumpy pushes these rich, AI-analyzed alerts directly into the channels your developers already live in—Discord and Slack.
Optional AI Rescue Mode
The Grumpy Rescue Engine
Stop bleeding revenue while waiting for CI/CD. Grumpy can intelligently intercept unhandled exceptions and safely resolve them at runtime, bridging the gap until you deploy a permanent fix.
Patch Applied (Memory)
window.paymentAPI.submit = function(amount) {
// Grumpy: Fixing your mess. Casting string to int.
return originalSubmit(parseInt(amount, 10));
};- Fixes the Root Cause, Not Just the Symptom.
- Our AI engine intelligently interprets the user's intent and permanently resolves the broken logic so the workflow actually succeeds.
- Ironclad Security Guarantees.
- The engine is strictly isolated from your databases, networks, and sensitive user data.
- Instant Global Distribution.
- Every future visitor instantly benefits from the fix, eliminating downtime while you sleep.
Zero-Polling WAF
The Grumpy Security Engine
Stop malicious traffic before it reaches your core logic. Grumpy passively intercepts SQL injections, XSS attacks, and brute-force attempts without adding any active polling overhead to your stack.
- Instant Threat Blocking.
- We automatically drop malicious incoming requests like SQLi and XSS before they can even touch your database.
- Zero-Polling Overhead.
- Built as a lightweight middleware, the engine only wakes up when it detects an anomaly. It adds zero latency to your legitimate traffic.
- Slack & Discord Alerts.
- Grumpy prevents the attack first, then instantly notifies your team in Slack or Discord so you can take further action if needed.
Connection Dropped
HTTP/1.1 403 Forbidden
X-Grumpy-Block: SQL_INJECTION
Content-Type: application/json
{"error": "A cute attempt to drop your tables via SQLi. I blocked them instantly. They hate me, but you're welcome."}Safety & Trust
Built for production, not chaos.
Grumpy is an enterprise-grade SRE, not a toy. We engineered our data pipelines and SDKs with absolute paranoia so your security team doesn't have to be.
No Source Code Stored
By default, Grumpy only collects stack traces, error context, and intercepted threat payloads. Your proprietary source code and database contents never leave your infrastructure.
Bring Your Own Key
We use a BYOK model. Your API keys (OpenAI, Anthropic, Groq, or Local Ollama) are encrypted at rest using AES-256 and never logged. You maintain total control over API billing, rate limits, and model choice.
Rescue Mode Controls
Rescue Mode is highly configurable. Set it to Suggested-Only to receive fixes in Slack, Manual Approve to stage them, or Auto-Apply. You hold the keys.
Immutable Audit Logs
Every alert triggered, every AI suggestion generated, and every hotfix applied is permanently recorded in a tamper-proof audit log. Your compliance team will have complete visibility into what the AI did and when.
Environment Controls
Grumpy natively understands the difference between your local, staging, and production environments. Configure aggressive AI behaviors for staging environments while keeping production limited to read-only alerting until you're absolutely confident.
Pricing that scales with you.
Choose the tier that matches your team's security and reliability needs.
Start your 14-day free trial. No credit card required.
Hobby
For side projects that will never launch.
$5/mo
- 5 Projects
- 1 User Included
- Regression Engine
- Slack & Discord Integrations
- Customizable Alert Personas
- 30-Day Streak Challenge
Pro
For the dev who actually ships to production.
$10/mo
- 10 Projects
- 1 User Included
- Regression Engine
- Grumpy Rescue Engine
- Sensitivity Dialer
- Zero-Polling Uptime Monitoring
- Zero-Polling WAF (Security)
- Slack & Discord Integrations
- Customizable Alert Personas
- 30-Day Streak Challenge
Team
Collaborate on triage and secure your team.
$20/mo
- 20 Projects
- 2 Team Users Included
- Additional $10/user, $1/project
- Regression Engine
- Grumpy Rescue Engine
- Sensitivity Dialer
- Zero-Polling Uptime Monitoring
- Zero-Polling WAF (Security)
- Slack & Discord Integrations
- Customizable Alert Personas
- 30-Day Streak Challenge
For Maintainers
"Not My Fault" Mode
Grumpy automatically isolates bugs caused by third-party packages, instantly clearing the developer's name and alerting the maintainer with exact stack traces.
- Actionable Bug Reports.
- Maintainers get exact stack traces, not vague GitHub issues.
- 100% Opt-In.
- You have full control. Maintainers are only notified if you explicitly enable it.
- Vendor Dashboard.
- Track the health of your packages.
Email Preview:
"Hey there, Grumpy.ai tracked 150 crashes in the last 24 hours tracing back to your package `axios`. The developer is taking the blame for it. Claim your free Vendor account to see the exact stack traces and fix the bug."
Trusted by engineering teams who value their weekends.
We just launched, so these reviews are currently 100% fake. But this is exactly what we hope you'll say about us.
“Grumpy intercepted an SQL injection that slipped past our legacy WAF. It dropped the connection and pinged the team instantly. Absolutely bulletproof.”
“The Rescue Engine patched a null pointer at runtime on Black Friday while our CI/CD pipeline was bogged down. It saved our entire sales event.”
“We hit a 30-day streak of zero unhandled exceptions and 100% uptime. Our VP of Engineering printed the certificate and framed it.”
“The AI didn't just tell me my database query was slow—it showed me the exact indexing missing and generated the migration script.”
“Replaced our legacy monitoring with Grumpy. Our mean time to resolution dropped 40% because the AI triage tells us exactly how to fix the crash before we open the logs.”
“My AI code editor autocompleted a disaster. Grumpy's WAF caught the resulting XSS vulnerability before it ever reached production. It's a lifesaver.”
“I thought my architecture was solid. Grumpy's dead man's switch caught a silent container failure that our other tools completely missed.”
“It’s like having a senior security engineer constantly watching your back, but without the coffee breath. 10/10.”
“I tried to deploy a hotfix that introduced a memory leak. Grumpy caught the spike in anomalies and alerted the #engineering channel before it took down the cluster.”
Frequently Grumpy Questions
Everything you need to know about Grumpy's architecture, security, and billing.
Ready to protect your stack?
Start your 14-day free trial today. No credit card required. Start catching exceptions and blocking threats in under two minutes.
Seamlessly Works
on your favorite frameworks and languages. Grumpy doesn't discriminate.