Zuplo Changelog

This release introduces configurable memory sizing for the MemoryZoneReadThroughCache, improves runtime OpenAPI path handling, and fixes environment variable support for Zudoku dev portals.

New Features 🎉#

• Configurable memory size for MemoryZoneReadThroughCache - The runtime's MemoryZoneReadThroughCache now supports configurable memory size limits. This enhancement provides developers with greater control over memory allocation for cached data, helping to optimize performance while avoiding out-of-memory errors in memory-constrained environments.

Bug Fixes 🐛#

• Support for ZUDOKU_PUBLIC_ environment variables - Fixed an issue preventing the use of ZUDOKU_PUBLIC_ prefixed environment variables in Zudoku dev portals. These variables can now be properly exposed to the client-side for use in configuration and React components.

• Ignore non-method properties on OpenAPI operations - The runtime now properly ignores properties on OpenAPI opertations that are not methods. Perviously this could cause build errors.

This release introduces powerful JWT authentication capabilities with the new JWT service plugin and upstream policy, enhances MCP (Model Context Protocol) support with improved URL pattern handling and custom tools, improves developer portal redirect handling, and includes numerous documentation updates across our policy suite.

New Features 🎉#

• JWT Service Plugin - Added a new JWT service plugin that enables advanced JWT token generation and management capabilities within Zuplo. This plugin provides developers with tools to create, sign, and manage JWT tokens directly in their API gateway workflows. Learn more about JWT authentication

• Zuplo JWT Auth Upstream Policy - Introduced a new upstream policy specifically designed for JWT authentication. This policy simplifies the process of securing backend services with JWT tokens, providing seamless integration with existing authentication systems. Read about Policy

• MCP Spec Support for 2025-06-18 - Updated MCP (Model Context Protocol) support to comply with the latest specification version 2025-06-18, ensuring compatibility with the newest features and improvements in the protocol. Explore MCP Capabilities

• Enhanced MCP Server Logging - Improved logging capabilities for MCP servers, providing better visibility into server operations and making it easier to debug and monitor MCP-based integrations. Explore MCP Capabilities

• Multi-Factor Authentication (MFA) Support - Enhanced security with new MFA configuration endpoints and login validation. This includes the ability to enforce MFA at the account level and manage MFA settings through dedicated API endpoints. Read about MFA

Bug Fixes 🐛#

• MCP URL Path Pattern Unification - Fixed inconsistencies in URL path pattern handling when invoking routes on the gateway, ensuring more reliable routing for MCP-based services.

• Developer Portal Redirect Issue - Resolved an issue with developer portal redirects that was causing incorrect navigation behavior in certain scenarios. Migrating to the new Zuplo developer portal

• MCP Schema Defaults Update - Updated the default values for includeOutputSchema and includeStructuredContent to better align with common use cases and improve developer experience.

• OpenMeter Policy Fix - Resolved issues with the OpenMeter policy to ensure accurate metering and usage tracking for API monetization scenarios.

Documentation 📚#

Comprehensive documentation updates were made across multiple policy configurations to improve clarity and provide better examples.

This release introduces Model Context Protocol (MCP) support for API development, new policies for query parameter manipulation and API metering, enhanced CLI commands, and improvements to console logging in the runtime.

New Features 🎉#

• Query Parameter to Header Inbound Policy - New policy that allows transforming query parameters into HTTP headers, enabling more flexible request handling and backend compatibility.

• Model Context Protocol (MCP) Support - Added comprehensive MCP server handler for local editing experience with improved schema validation, URL pattern support, parameter descriptions and examples. MCP enables AI-powered tools to interact with your APIs more effectively.

• Console Logging Support in Runtime (preview) - Developers can now use console logging directly in the runtime environment, making debugging and monitoring easier during development.

• OpenMeter Metering Inbound Policy - New integration with OpenMeter for API usage metering, enabling precise tracking and billing of API consumption.

• Enhanced Prompt Injection Policy - Added "strict" mode with more granular logging capabilities to better protect APIs from prompt injection attacks in AI-powered applications.

• Improved CLI Commands:

  • New zuplo source command replaces the deprecated zuplo project command
  • Added interactive selection for account, project, and environment values in authenticated commands
  • Environment variables from public vars are now written to .env files for better local development experience

This release introduces powerful new features for API management including internal route invocation and improved authentication policies.

Breaking Changes 🛠#

• Removed the deprecated Aserto authorization policy due to Aserto shutting down. If you're currently using this policy, please migrate to an alternative authorization solution.

New Features 🎉#

• Internal Route Invocation: Added context.invokeRoute capability that allows you to internally invoke a route without making an external HTTP request. This enables more efficient internal API calls and better performance for complex routing scenarios.

• Enhanced Client IP Parsing: Improved parsing of client IP addresses from the X-Forwarded-For header, providing more accurate client identification for rate limiting and analytics.

• CLI Log Verbosity Control: Added a new flag to control log verbosity levels in the Zuplo CLI, making debugging and troubleshooting easier during local development.

• Custom Domain Aliases: Introduced support for custom domain aliases, allowing you to map multiple domains to a single API deployment for more flexible domain management.

• Web Bot Authentication: New policy for authenticating and managing web bot traffic, helping you control automated access to your APIs. See the policy docs for more details

• API Key Management Enhancement: You can now delete the default API key, providing more flexibility in API key lifecycle management. See documentation

Bug Fixes 🐛#

• Fixed an issue that prevented changing deployments for custom domains.
• Increased the body size limit on GitHub webhooks to support larger payloads.
• Enhanced error handling in mock API policy to support single example responses.

Documentation 📚#

• Updated documentation for the Auth0 JWT authentication policy.

This release includes important improvements to error handling, and bug fixes to the GitLab integration. We've also made improvements to our project templates and development tooling.

New Features 🎉#

• Improved error messages for invalid module imports - When importing modules incorrectly in your Zuplo project, you'll now receive more helpful and descriptive error messages that make it easier to identify and fix import issues. This enhancement improves the developer experience when working with custom modules and policies.

Bug Fixes 🐛#

• Fixed virtual module namespace collisions - Resolved an issue where virtual modules could conflict with each other due to namespace collisions. Virtual modules are now properly namespaced to ensure they work reliably alongside other modules in your project.

• Fixed GitLab integration infinite loop - Corrected a critical issue where fetching from GitLab repositories could cause infinite loops under certain conditions. This fix ensures stable and reliable synchronization with your GitLab repositories when using Zuplo's source control integration.

Documentation 📚#

• Added /hello route to project template - The default project template now includes a /hello route example, making it easier for new users to understand how to create and configure routes in their Zuplo API gateway.

Other Changes 🔄#

• Zudoku template enhancements - Updated the Zudoku documentation template to properly set Zuplo flags on scripts, ensuring better integration between Zuplo and the Dev Portal.

This release includes improvements to OpenAPI schema reference handling and a fix for the Zuplo CLI login behavior on middleware platforms.

Bug Fixes 🐛#

• Improved nested schema reference traversing - Fixed an issue where deeply nested schema references in OpenAPI specifications were not being properly resolved. This enhancement ensures that complex OpenAPI documents with multiple levels of $ref pointers are correctly processed, improving compatibility with sophisticated API specifications.

• Fixed CLI login behavior on middleware platforms - Resolved an issue where the Zuplo CLI would unexpectedly exit after login when running on certain middleware platforms. The CLI now properly maintains the session after successful authentication, ensuring a smooth development experience.