Cursor api

API Request Missing Required Headers After Refactoring

API requests generated by Cursor are missing required headers, causing requests to fail with 400 or 401 errors. The server requires specific headers like Authorization or Content-Type, but they're no longer being sent.

Header setup code may have been removed or restructured incorrectly.

Error Messages You Might See

401 Unauthorized 400 Bad Request Missing Authorization header Invalid Content-Type
401 Unauthorized400 Bad RequestMissing Authorization headerInvalid Content-Type

Common Causes

  1. Authorization header removed or incorrect format (missing 'Bearer ' prefix)
  2. Content-Type header not set for POST/PUT requests
  3. Custom headers removed from fetch/axios default config
  4. Header key name changed (e.g., 'X-API-Key' vs 'x-api-key')
  5. Header value set to undefined or null

How to Fix It

Verify header format: Authorization: 'Bearer ' + token. Set Content-Type: 'application/json'. Use axios defaults: axios.defaults.headers.common['Authorization'] = 'Bearer ' + token. Log request headers to debug: console.log(req.headers).

Real developers can help you.

prajwalfullstack prajwalfullstack Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help Pratik Pratik SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure David Olverson David Olverson Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production. Anthony Akpan Anthony Akpan Developer with 8 years of experience building softwares fro startups Luca Liberati Luca Liberati I work on monoliths and microservices, backends and frontends, manage K8s clusters and love to design apps architecture zipking 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. Vlad Temian Vlad Temian 15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox). Cursor ambassador and agentic tooling builder. I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti. I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks. https://blog.vtemian.com/ Jen Jacobsen Jen Jacobsen 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. Costea Adrian Costea Adrian Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system. Victor Denisov Victor Denisov Developer

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Frequently Asked Questions

How do I set default headers?

axios: axios.defaults.headers.common['X-Custom'] = 'value'. fetch: new Headers({...}) passed in init object.

What's Bearer token?

HTTP auth scheme. Format: 'Authorization: Bearer token'. Server checks token after 'Bearer ' prefix.

Related Cursor Issues

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