tools-only Release v1.0.10 - A2A Discovery, OAuth2 Providers & Enhanced Search
January 2026
Major Features
A2A Agent Discovery and Invocation Pattern
Complete implementation of Agent-to-Agent (A2A) communication workflow enabling agents to discover and collaborate with other agents:
- Registry Discovery Client: Semantic search and skill-based agent discovery
- Remote Agent Client: A2A protocol communication with discovered agents
- Travel Assistant + Flight Booking Agents: Reference implementation demonstrating the pattern
- Agent Caching: Efficient caching of discovered agents for reuse
OAuth2 Provider Configuration
Flexible OAuth2 provider enablement through environment variables:
- Dynamic Provider Selection: Enable/disable Keycloak, Cognito, Entra ID, GitHub, and Google via environment variables
- Nginx Route Configuration: Added OAuth2 callback routes for Entra, GitHub, and Google providers
- Backward Compatibility: Keycloak enabled by default to match previous behavior
Enhanced Semantic Search
Improved search capabilities with hybrid keyword matching:
- Hybrid Search: Combines semantic similarity with keyword matching
- Tool Discovery: Better discovery of MCP server tools and agent skills
- Query Tokenization: Improved handling of multi-word search queries
What's New
Authentication & OAuth2
- Make OAuth2 provider enablement configurable via environment variables (#353)
- Add OAuth2 nginx routes for Entra, GitHub, and Google providers (#354)
- Fix outdated placeholder checks in registry-entrypoint.sh (#355)
- Fix boolean conversion in
substitute_env_varsfor OAuth2 provider enablement
A2A Agent Registry
- Complete A2A agent discovery and invocation pattern (#344)
- Web-based UI for A2A agent management (#349)
- Closes issue #198: Agent-to-Agent Communication Workflow
Search & Discovery
- Improve semantic search with hybrid keyword matching (#352)
- Better agent tool discovery through enhanced search
Security & UI
- Add security scan results popup to ServerCard and AgentCard (#341)
- Support
server_namefield in JSON upload for server registration
MongoDB/DocumentDB
- MongoDB deployment and configuration improvements (#343)
- Update index creation for mongodb-ce (#342)
- Update MongoDB init to support SCRAM-SHA-256 and custom replicaset (#337)
- Fix MongoDB authentication compatibility for DocumentDB (#335)
Frontend
- Frontend performance optimizations with webpack-dev-server v5 fix (#339)
- Bump react-router and react-router-dom dependencies (#345)
Documentation
- Clarify AUTH_SERVER_EXTERNAL_URL configuration in macOS setup guide (#338)
Configuration Changes
New Environment Variables
# OAuth2 Provider Enablement (all default to false except KEYCLOAK_ENABLED)
KEYCLOAK_ENABLED=true # Default: true (for backward compatibility)
COGNITO_ENABLED=false
ENTRA_ENABLED=false
GITHUB_ENABLED=false
GOOGLE_ENABLED=false
OAuth2 Provider Setup
To enable additional OAuth2 providers:
Entra ID (Microsoft):
ENTRA_ENABLED=true ENTRA_TENANT_ID=your-tenant-id ENTRA_CLIENT_ID=your-client-id ENTRA_CLIENT_SECRET=your-client-secretGitHub:
GITHUB_ENABLED=true GITHUB_CLIENT_ID=your-github-client-id GITHUB_CLIENT_SECRET=your-github-client-secretGoogle:
GOOGLE_ENABLED=true GOOGLE_CLIENT_ID=your-google-client-id GOOGLE_CLIENT_SECRET=your-google-client-secret
Upgrade Instructions
For Docker Compose Deployments
- Pull the latest changes:
cd mcp-gateway-registry
git pull origin main
git checkout v1.0.10
- Update environment configuration (if enabling OAuth2 providers):
# Add OAuth2 provider configuration to .env
# See Configuration Changes section above
- Rebuild and restart:
./build_and_run.sh
For AWS ECS Deployment
- Update Terraform variables for any new OAuth2 providers
- Apply Terraform changes:
cd terraform/aws-ecs
terraform plan
terraform apply
Bug Fixes
- Fix boolean conversion in
substitute_env_varsfor OAuth2 provider enablement (environment variables return strings, not booleans) - Fix outdated placeholder checks in registry-entrypoint.sh (#355)
- Fix MongoDB authentication compatibility for DocumentDB (#335)
- Frontend performance optimizations with webpack-dev-server v5 fix (#339)
Pull Requests Included
| PR | Title |
|---|---|
| #353 | Registry-Auth: Make OAuth2 provider enablement configurable via environment variables |
| #354 | Add OAuth2 nginx routes for Entra, GitHub, and Google providers |
| #355 | Fix outdated placeholder checks in registry-entrypoint.sh |
| #352 | Improve semantic search with hybrid keyword matching and agent tool discovery |
| #349 | Web-based UI for A2A agent management |
| #345 | chore(deps): bump react-router and react-router-dom in /frontend |
| #344 | A2A Agent Discovery and Invocation Pattern |
| #343 | MongoDB deployment and configuration |
| #342 | Update index creation for mongodb-ce |
| #341 | Add security scan results popup to ServerCard and AgentCard |
| #339 | Frontend Performance Optimizations with webpack-dev-server v5 Fix |
| #338 | docs: clarify AUTH_SERVER_EXTERNAL_URL config in macOS setup guide |
| #337 | Update mongodb init to support SCRAM-SHA-256, support auth and custom replicaset |
| #335 | Fix MongoDB authentication compatibility for DocumentDB |
Issues Closed
- #198 - Implement Agent-to-Agent Communication Workflow
Resources
Documentation
- A2A Agents README - A2A agent setup and usage
- OAuth2 Configuration - Environment variable reference
- macOS Setup Guide - Updated with AUTH_SERVER_EXTERNAL_URL clarification
Support
Full Changelog: v1.0.9...v1.0.10