> ## Documentation Index > Fetch the complete documentation index at: https://mcp-server-langgraph.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Version History > Complete release history and version comparison for MCP Server with LangGraph ## Current Version **Latest Release**: v2.8.0 (2025-10-22) **Highlights**: Test Coverage +35% (85%+ overall), Docker-based integration testing infrastructure, 61 new comprehensive test cases ## Version Comparison Matrix | Feature | v2.8 | v2.7 | v2.6 | v2.5 | v2.4 | v2.3 | v2.2 | v2.1 | | ----------------------------- | :------: | :-----: | :-----: | :-----: | :-----: | :-----: | :-----: | :----: | | **Authentication & Sessions** | | | | | | | | | | Keycloak SSO Integration | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Redis Session Management | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Session Store Architecture | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Provider Pattern | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | **Compliance & Security** | | | | | | | | | | GDPR Data Subject Rights | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | | SOC 2 Automation | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | | HIPAA Technical Safeguards | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | | SLA Monitoring (99.9%) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | | Data Retention Policies | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | | Compliance Storage Backend | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | | **Testing & Quality** | | | | | | | | | | Unit Tests (498+) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Integration Tests | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Docker Integration Tests | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ | ❌ | | 100% Test Pass Rate | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ | | Property-Based Testing | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Contract Testing | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Test Coverage | **85%+** | \~75% | \~75% | \~75% | \~75% | \~75% | \~75% | \~75% | | **Documentation** | | | | | | | | | | Mintlify Docs | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Architecture Decision Records | 30 ADRs | 30 ADRs | 26 ADRs | 21 ADRs | 21 ADRs | 21 ADRs | 5 ADRs | 5 ADRs | | **Core Features** | | | | | | | | | | LangGraph Version | 0.6.10 | 0.6.10 | 0.6.10 | 0.6.10 | 0.6.10 | 0.2.28 | 0.2.28 | 0.2.28 | | Multi-LLM Support (LiteLLM) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | OpenFGA Authorization | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Pydantic Version | V2 | V2 | V2 | V2 | V2 | V2 | V1 | V1 | | Type Safety Coverage | 64% | 64% | 64% | 64% | 64% | 64% | 27% | 27% | | Agentic Loop (GAVR) | ✅ | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | | Anthropic Best Practices | 9.8/10 | 9.8/10 | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | | **Secrets Management** | | | | | | | | | | Infisical Integration | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Infisical Docker Builds | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ | ❌ | | 5 Installation Options | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ | ❌ | | **Deployment** | | | | | | | | | | Kubernetes/Helm/Kustomize | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Multi-Cloud (GKE/EKS/AKS) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Docker Compose | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | **Observability** | | | | | | | | | | OpenTelemetry + LangSmith | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | Grafana Dashboards | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 7 | | Prometheus Alerts | 20+ SLA | 20+ SLA | 20+ SLA | 20+ SLA | 20+ SLA | 20+ SLA | 20+ SLA | Basic | ## Release Highlights Test coverage +35% (85%+) + Infrastructure improvements Agentic loop + Anthropic best practices (9.8/10) CI/CD fixes + Documentation improvements Docker integration tests + Infisical builds LangGraph 0.6.10 + 100% test pass rate Storage backend + Pydantic V2 GDPR/SOC2/HIPAA compliance automation Keycloak SSO + Production hardening Package reorganization (breaking) ## Version Timeline ```mermaid theme={null} %% ColorBrewer2 Set3 palette - each component type uniquely colored flowchart LR V1[v1.0.0
Initial Release] --> V2[v2.0.0
Package Reorg] V2 --> V21[v2.1.0
Keycloak + Redis] V21 --> V22[v2.2.0
Compliance Suite] V22 --> V23[v2.3.0
Storage + Types] V23 --> V24[v2.4.0
LangGraph 0.6.10] V24 --> V25[v2.5.0
Docker Tests] V25 --> V26[v2.6.0
CI/CD Fixes] V26 --> V27[v2.7.0
Agentic Loop] V27 --> V28[v2.8.0
Test Coverage 85%+] %% ColorBrewer2 Set3 palette - progressive version timeline ``` ## Migration Guides **Breaking Changes**: None **New Features**: * Test coverage improvements (+35% overall, now 85%+) * Docker Compose test environment (Qdrant, Redis, PostgreSQL) * 61 new comprehensive test cases * 25 previously-skipped tests now enabled **Recommended Actions**: 1. Update dependencies: `uv sync` 2. Run tests with new Docker infrastructure: `make test-integration` 3. Review new test coverage reports 4. Update CI/CD to use Docker Compose test environment **Breaking Changes**: None **New Features**: * LangGraph 0.6.10 (API compatible) * 100% test pass rate (437/437) * 21 comprehensive ADRs **Recommended Actions**: 1. Update dependencies: `uv sync` 2. Run tests: `make test` 3. Review new ADRs for architectural guidance **Breaking Changes**: None (Pydantic V2 backward compatible) **New Features**: * Compliance storage backend (5 interfaces) * Pydantic V2 migration * Type safety enhanced (27% → 64%) **Recommended Actions**: 1. Review Pydantic V2 changes if extending models 2. Run type checks: `mypy src/` 3. Test compliance storage integration **Breaking Changes**: None **New Features**: * GDPR/SOC2/HIPAA compliance automation * SLA monitoring with 20+ Prometheus alerts * 2 new Grafana dashboards **Recommended Actions**: 1. Configure compliance settings in `.env` 2. Import new Grafana dashboards 3. Review Prometheus alert rules 4. Set up data retention policies **Breaking Changes**: None (v2.0.0 was the breaking change) **New Features**: * Keycloak SSO integration * Redis session management * Kubernetes/Helm deployment infrastructure * 43 MDX documentation files **Recommended Actions**: 1. Set up Keycloak if using SSO: `make setup-keycloak` 2. Configure Redis for sessions 3. Review Kubernetes deployment guides **Breaking Changes**: ⚠️ Major package reorganization **Import Path Changes**: ```python theme={null} # Before (v1.x) from config import settings from auth import AuthMiddleware # After (v2.x) from mcp_server_langgraph.core.config import settings from mcp_server_langgraph.auth.middleware import AuthMiddleware ``` **Recommended Actions**: 1. Update all imports to new structure 2. Review migration guide in CHANGELOG 3. Update CI/CD pipelines 4. Test thoroughly before deploying ## Deprecation Schedule | Feature | Deprecated In | Removed In | Alternative | | ------------------ | ------------- | ---------- | ------------------------ | | HTTP/SSE Transport | v2.0.0 | v2.0.0 | StreamableHTTP transport | | Pydantic V1 | v2.3.0 | v3.0.0 | Pydantic V2 models | ## Semantic Versioning This project follows [Semantic Versioning 2.0.0](https://semver.org/): * **MAJOR** (v2.x.x): Breaking changes (import paths, API changes) * **MINOR** (vx.Y.x): New features (backward compatible) * **PATCH** (vx.x.Z): Bug fixes (backward compatible) ## Support Policy | Version | Status | Support Until | Security Fixes | | ------- | ----------- | ------------- | -------------- | | v2.8.x | **Current** | Active | ✅ Yes | | v2.7.x | Maintenance | 2026-04-22 | ✅ Yes | | v2.6.x | Maintenance | 2026-01-17 | ✅ Yes | | v2.5.x | End of Life | 2025-10-20 | ❌ No | | v2.4.x | End of Life | 2025-10-14 | ❌ No | | v2.3.x | End of Life | 2025-04-13 | ❌ No | | v2.2.x | End of Life | 2025-04-13 | ❌ No | | v2.1.x | End of Life | 2025-04-12 | ❌ No | | v2.0.x | End of Life | 2025-02-11 | ❌ No | | v1.x | End of Life | 2025-01-10 | ❌ No | ## Getting Help Detailed release notes Download specific versions Community support Report bugs