Replit
api
Stripe Webhook Signature Invalid on Replit
Stripe webhook calls are rejected with signature verification error. Webhook handler rejects all incoming events.
Signature verification requires exact configuration and secret key matching.
Error Messages You Might See
Signature verification failed
No signature header found
Timestamp outside tolerance window
Common Causes
- Wrong webhook secret (signing key) configured
- Using test secret in production or vice versa
- Timestamp header missing from validation
- Request body modified/corrupted in transit
- Signature header format incorrect
How to Fix It
Verify webhook signing secret from Stripe dashboard matches app config. Use separate test and live keys. Use Stripe's official SDK for signature validation. Include timestamp tolerance (within 5 minutes). Ensure request body is raw (not JSON parsed) before validation. Check Stripe logs for which endpoints are configured.
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Jacek Rozanski
Senior PHP/Symfony developer and DevOps engineer with 20+ years of professional experience, running opcode.pl (web development agency, est. 2004).
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Tech stack: PHP 8.x, Symfony, React, Next.js, PostgreSQL, MySQL, Docker, AWS (ECS, RDS, S3, SQS/SNS, CloudFront), Terraform, Supabase. I also use AI tools daily (Claude Code, Cursor) in my own workflow, so I understand both the strengths and the gaps in AI-generated code.
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Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
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Anthony Akpan
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15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it.
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I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
Victor Denisov
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Daniel Vázquez
Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting.
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Get HelpFrequently Asked Questions
Where do I find the webhook signing secret?
Stripe Dashboard > Developers > Webhooks > click endpoint > Signing secret
How do I test webhooks locally?
Use Stripe CLI: stripe listen --forward-to localhost:8080/webhook