REST API Config Generator

Generate REST API configs with routes, methods, schemas, auth, rate limits, error handling, examples, and documentation for modern APIs.

Output:A ready-to-use configuration file for REST API Config with best practices applied.

API Design

Project Type

Base Path

The root path for your API (e.g., /api/v1). Always include a version.

Supported HTTP Methods- Which methods will this API endpoint support?

Features & Security

Authentication Type

Pagination Strategy

Enable Rate Limiting- Include standard rate limit configurations with headers.

Enable CORS- Include Cross-Origin Resource Sharing configuration.

api-config.json

Syntax highlighting disabled for large output (311 lines).

{
  "api": {
    "name": "Public API Configuration",
    "version": "1.0.0",
    "project_type": "Public API",
    "base_url": "https://api.example.com/api/v1",
    "versioning": {
      "strategy": "URL Path",
      "example": "/api/v1/resource"
    }
  },
  "endpoints": [
    {
      "method": "GET",
      "path": "/api/v1/resource",
      "description": "List all resources",
      "pagination": {
        "type": "Cursor-based",
        "params": {
          "first": "number",
          "after": "string (cursor)",
          "last": "number",
          "before": "string (cursor)"
        },
        "response": {
          "edges": [
            {
              "cursor": "string",
              "node": {}
            }
          ],
          "pageInfo": {
            "hasNextPage": "boolean",
            "endCursor": "string"
          },
          "totalCount": "number"
        }
      },
      "status_codes": [
        200,
        401,
        429,
        500
      ]
    },
    {
      "method": "GET",
      "path": "/api/v1/resource/{id}",
      "description": "Get a single resource by ID",
      "path_params": [
        {
          "name": "id",
          "type": "string",
          "description": "Unique identifier"
        }
      ],
      "status_codes": [
        200,
        401,
        404,
        429,
        500
      ]
    },
    {
      "method": "POST",
      "path": "/api/v1/resource",
      "description": "Create a new resource",
      "request_body": {
        "required": true,
        "content_type": "application/json",
        "fields": [
          {
            "name": "name",
            "type": "string",
            "required": true
          },
          {
            "name": "email",
            "type": "string",
            "required": true,
            "format": "email"
          }
        ]
      },
      "status_codes": [
        201,
        400,
        401,
        409,
        422,
        429,
        500
      ]
    },
    {
      "method": "PUT",
      "path": "/api/v1/resource/{id}",
      "description": "Replace a resource entirely",
      "path_params": [
        {
          "name": "id",
          "type": "string",
          "description": "Unique identifier"
        }
      ],
      "request_body": {
        "required": true,
        "content_type": "application/json",
        "fields": [
          {
            "name": "name",
            "type": "string",
            "required": true
          },
          {
            "name": "email",
            "type": "string",
            "required": true,
            "format": "email"
          }
        ]
      },
      "status_codes": [
        200,
        400,
        401,
        404,
        422,
        429,
        500
      ]
    },
    {
      "method": "DELETE",
      "path": "/api/v1/resource/{id}",
      "description": "Delete a resource",
      "path_params": [
        {
          "name": "id",
          "type": "string",
          "description": "Unique identifier"
        }
      ],
      "status_codes": [
        204,
        401,
        404,
        429,
        500
      ]
    }
  ],
  "authentication": {
    "type": "Bearer Token",
    "description": "Include a valid JWT in the Authorization header.",
    "header": "Authorization: Bearer <token>",
    "placeholder": "YOUR_JWT_TOKEN_HERE"
  },
  "features": {
    "pagination": "Cursor-based",
    "rate_limiting": true,
    "cors_enabled": true,
    "error_format": "RFC 7807"
  },
  "rate_limiting": {
    "enabled": true,
    "headers": {
      "X-RateLimit-Limit": "Maximum requests per window",
      "X-RateLimit-Remaining": "Remaining requests in current window",
      "X-RateLimit-Reset": "UTC epoch timestamp when window resets",
      "Retry-After": "Seconds to wait (sent on 429 responses)"
    },
    "defaults": {
      "window_ms": 60000,
      "max_requests": 100,
      "message": "Too many requests. Please try again later."
    }
  },
  "cors": {
    "enabled": true,
    "allowed_origins": [
      "https://yourdomain.com"
    ],
    "allowed_methods": [
      "GET",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "OPTIONS"
    ],
    "allowed_headers": [
      "Content-Type",
      "Authorization",
      "X-API-Key",
      "X-Request-ID"
    ],
    "expose_headers": [
      "X-Request-ID",
      "X-RateLimit-Limit",
      "X-RateLimit-Remaining"
    ],
    "allow_credentials": true,
    "max_age": 86400,
    "warning": "Never use '*' for Access-Control-Allow-Origin when Allow-Credentials is true."
  },
  "error_responses": {
    "success_200": {
      "code": 200,
      "body": {
        "status": "success",
        "data": {
          "id": "example-id-123"
        }
      }
    },
    "created_201": {
      "code": 201,
      "body": {
        "status": "success",
        "data": {
          "id": "example-id-123"
        }
      }
    },
    "no_content_204": {
      "code": 204,
      "body": null
    },
    "bad_request_400": {
      "code": 400,
      "body": {
        "error": {
          "code": "BAD_REQUEST",
          "message": "The request was malformed."
        }
      }
    },
    "unauthorized_401": {
      "code": 401,
      "body": {
        "error": {
          "code": "UNAUTHORIZED",
          "message": "Invalid or missing authentication token."
        }
      }
    },
    "forbidden_403": {
      "code": 403,
      "body": {
        "error": {
          "code": "FORBIDDEN",
          "message": "You do not have permission to access this resource."
        }
      }
    },
    "not_found_404": {
      "code": 404,
      "body": {
        "error": {
          "code": "NOT_FOUND",
          "message": "The requested resource was not found."
        }
      }
    },
    "validation_422": {
      "code": 422,
      "body": {
        "error": {
          "code": "VALIDATION_FAILED",
          "message": "The provided payload is invalid.",
          "details": []
        }
      }
    },
    "rate_limit_429": {
      "code": 429,
      "body": {
        "error": {
          "code": "RATE_LIMITED",
          "message": "Too many requests. Please retry after the specified time."
        }
      }
    },
    "server_error_500": {
      "code": 500,
      "body": {
        "error": {
          "code": "INTERNAL_ERROR",
          "message": "An unexpected error occurred. Please try again later."
        }
      }
    }
  },
  "headers": {
    "request": {
      "Authorization": "Bearer {{YOUR_TOKEN}}",
      "Content-Type": "application/json",
      "X-Request-ID": "UUID for request correlation",
      "Accept": "application/json"
    },
    "response": {
      "Content-Type": "application/json",
      "X-Request-ID": "Echo back the request ID",
      "X-RateLimit-Limit": "100",
      "X-RateLimit-Remaining": "99",
      "X-RateLimit-Reset": "1640995200"
    }
  }
}

Quick Summary

A REST API Config Generator helps you create API route configuration, request schemas, response examples, authentication settings, and documentation structure. It gives developers a ready-to-edit starting point for building secure and consistent REST APIs.

What is this tool?

A REST API Config Generator is an online tool that scaffolds the foundational routing and controller code for your backend web services. Instead of manually writing repetitive HTTP route handlers, middleware wrappers, and status code logic, you can define your RESTful resources visually.

The tool generates clean, structured REST API configuration that follows framework-specific best practices, saving you hours of initial setup time and ensuring consistency across your microservices or monolith architecture.

How to Use This Tool

Define API Routes — Specify your resources (e.g., /users, /orders) and select the HTTP methods (GET, POST, PUT, DELETE).
Set Authentication — Choose your REST API auth options, such as JWT, OAuth2, or API Keys.
Configure Limits & Errors — Adjust rate limiting thresholds and enable standardized problem details for error handling.
Generate & Review — Click generate to produce the REST API route generator outputs.
Export — Copy the generated Python, Node.js, or TypeScript friendly examples into your project.

What This Tool Generates

rest-api-config.json — JSON configuration of your API routes and schemas.
routes.js / main.py — Framework-specific route definitions.

Example Output Explanation

This REST API config example provides a standard RESTful structure ready for your business logic:

{
  "api_version": "v1",
  "base_path": "/api",
  "rate_limiting": {
    "requests_per_minute": 60,
    "strategy": "ip"
  },
  "routes": [
    {
      "path": "/users",
      "method": "GET",
      "auth_required": true,
      "description": "Get a list of users"
    }
  ]
}

Best Practices

Use plural nouns for resource URLs (e.g., /users instead of /user or /getUsers) to keep endpoints uniform.
Return the correct HTTP status codes (200 for OK, 201 for Created, 400 for Client Error, 404 for Not Found).
Version your APIs in the URL or header (e.g., /api/v1/users) to allow for future breaking changes without disrupting current users.
Keep your route definitions completely separate from your business logic by using the controller-service pattern.

Common Mistakes

Putting complex database queries directly inside the route handler instead of abstracting them into a separate service layer.
Returning 200 OK for every response, even when an error occurred. Always use 4xx and 5xx status codes appropriately.
Using verbs in the URL path like /users/create. Use the HTTP POST method on the /users collection instead.

Security Notes

Do not paste real API keys into the generator. Use placeholders.
Implement rate limiting on all public API routes to prevent DDoS and brute-force login attacks.
Never trust user input. Always validate and sanitize request bodies and query parameters before processing them.
Validate CORS rules and never use wildcard CORS (`*`) on endpoints that accept credentials.
Use HTTPS in production to encrypt all REST API traffic.
Review generated examples before sharing to ensure no sensitive architecture details are leaked.

Testing Instructions

Run the generated server file locally (e.g., 'node server.js' or 'uvicorn main:app --reload').
Use a Postman collection or cURL to send test HTTP requests to your new endpoints.
Write automated unit tests using tools like Jest (JS) or PyTest (Python). You can also use a rest assured config example setup for Java-based testing.

Frequently Asked Questions

What is a REST API Config Generator?

A REST API Config Generator is an online tool that helps developers quickly create standard configuration files for APIs, such as route configurations, schemas, and boilerplate code.

Is this REST API generator free?

Yes, this free REST API generator is available online and requires no sign-up or credit card. You can use it as much as you need.

Can I generate REST API configs for Python?

Yes! Our REST API config generator Python output provides ready-to-use boilerplate for popular frameworks like FastAPI or Flask, alongside options for Node.js and TypeScript.

Can I use this with GitHub projects?

Absolutely. The REST API config generator github integration simply means you can copy the generated code and commit it directly to your GitHub repository to bootstrap your project.

What is REST API configuration?

REST API configuration involves setting up your endpoint routes, defining request and response schemas, specifying authentication methods, and establishing rate limits and error handling structures.

Is this the same as REST API codegen?

While similar, this differs from traditional REST API codegen or rest codegen tools. Codegen often generates entire client SDKs or complex server stubs from an OpenAPI spec. This generator provides a production-ready starting point and configuration templates directly from a visual interface.

How do I test a REST API config?

You can test your generated routes using Postman, cURL, or write automated tests. For Java developers looking for a rest assured config example, you can take our generated API configuration and write your REST Assured tests against those endpoints.

Should I review generated API configs before production?

Yes, you must review all generated API configs before deploying to production. Ensure you review security settings, replace any placeholders with actual secrets via environment variables, and validate your CORS rules.

How We Keep Your Configs Safe & Valid

Built-in Error Checking

Every file is checked against official rules. We catch missing fields and bad syntax. YAML indentation errors are flagged right away. Kubernetes, Terraform, and Docker specs are all covered. API versions and labels are verified too. You get valid output every time you generate.

100% Private & Local

All tools run in your browser only. Your API keys never leave your machine. We do not use any tracking scripts. No data is sent to any server. Passwords and secrets stay on your device. Crypto operations use the Web Crypto API. Your privacy is fully protected at all times.

Secure Settings by Default

Configs use safe defaults out of the box. Containers run as non-root users. Root filesystems are set to read-only. Dangerous Linux capabilities are dropped. Network policies limit pod-to-pod traffic. TLS 1.3 is enabled for web servers. Security headers are added where needed.

Ready for CI/CD & Git

Output files are ready for your Git repo. Use them with ArgoCD, Flux, or GitHub Actions. Files use clear formatting and comments. Code review is easy for your team. Indentation and key order are consistent. Test in staging before going to production. Every file is clean and well-structured.

Infrastructure as Code

Store configs in Git alongside your code. Terraform modules include typed variables. Backend configs support remote state locking. Outputs work across multiple modules. Ansible playbooks use clear task steps. Chef and Puppet configs are also supported. Every file works with version control tools.

Monitoring & Tracing

Set up Prometheus with auto-discovery rules. Create Grafana dashboards with template variables. Add alerting rules with severity labels. Use OpenTelemetry for trace collection. Forward logs to Loki or Elasticsearch. Connect to Jaeger or Tempo for tracing. Monitor metrics, logs, and traces together.

Container & Docker Safety

Dockerfiles use multi-stage builds for small images. Base images are pinned to exact versions. Dev files are excluded from final images. Health checks are added for orchestrator use. Containers switch to non-root users. Docker Compose uses named volumes and networks. Resource limits are set in deploy configs.

Multiple Output Formats

Export as YAML, JSON, HCL, or TOML. Kubernetes uses YAML with proper separators. Terraform uses HCL with correct escaping. JSON output has consistent indentation. Copy to clipboard with one click. Preview output with syntax highlighting. Line numbers help you review quickly.