Click Below to Get the Code

Browse, clone, and build from real-world templates powered by Harper.
News
GitHub Logo

Harper Launches Official Model Context Protocol (MCP) Server, Expanding Support for LLM-Native Applications

Harper announces the launch of its open-source Model Context Protocol (MCP) server, natively integrated into its data engine. This advancement delivers a high-performance, unified platform for LLM-native applications, enabling efficient, multi-modal context retrieval with minimal infrastructure overhead.
Announcement
News
Announcement

Harper Launches Official Model Context Protocol (MCP) Server, Expanding Support for LLM-Native Applications

Harper
at Harper
July 1, 2025
Harper
at Harper
July 1, 2025
Harper
at Harper
July 1, 2025
July 1, 2025
Harper announces the launch of its open-source Model Context Protocol (MCP) server, natively integrated into its data engine. This advancement delivers a high-performance, unified platform for LLM-native applications, enabling efficient, multi-modal context retrieval with minimal infrastructure overhead.
Harper

Harper’s composable application platform now offers an officially listed Model Context Protocol (MCP) server.

This marks a significant step forward for developers building applications powered by large language models (LLMs). While most MCP servers act as intermediaries between the protocol and an external data source, Harper’s implementation is fused directly into Harper’s data engine. This design eliminates the overhead of network requests, service orchestration, and data movement across layers.

Why It Matters

By running both the MCP server and data operations in the same process, Harper enables a more efficient, performant, reliable, and scalable foundation for context-aware AI systems. This allows developers to retrieve, transform, and deliver context without relying on fragmented infrastructure or additional services.

Unlike traditional approaches, Harper supports multiple data types natively — including structured records, unstructured blobs, and embeddings — all accessible through a single, unified interface.

Developer Advantages

  • Fewer moving parts – Reduce system complexity with one fused stack
  • Consistent performance – Avoid network and serialization overhead
  • Flexible deployment – Run locally, at the edge, or in multi-region environments
  • Multi-modal context support – Access structured and unstructured data without external dependencies

Open Source and Ready to Use

Harper’s MCP server is open source under the MIT license and available today on GitHub:
https://github.com/HarperDB/mcp-server

“MCP is emerging as a foundational standard for LLM-native development. Our implementation reflects Harper’s core philosophy — that context and computation belong together, not separated by layers of infrastructure.”
Stephen Goldberg, CEO, Harper

For technical inquiries or media requests, please contact hello@harperdb.io

Harper’s composable application platform now offers an officially listed Model Context Protocol (MCP) server.

This marks a significant step forward for developers building applications powered by large language models (LLMs). While most MCP servers act as intermediaries between the protocol and an external data source, Harper’s implementation is fused directly into Harper’s data engine. This design eliminates the overhead of network requests, service orchestration, and data movement across layers.

Why It Matters

By running both the MCP server and data operations in the same process, Harper enables a more efficient, performant, reliable, and scalable foundation for context-aware AI systems. This allows developers to retrieve, transform, and deliver context without relying on fragmented infrastructure or additional services.

Unlike traditional approaches, Harper supports multiple data types natively — including structured records, unstructured blobs, and embeddings — all accessible through a single, unified interface.

Developer Advantages

  • Fewer moving parts – Reduce system complexity with one fused stack
  • Consistent performance – Avoid network and serialization overhead
  • Flexible deployment – Run locally, at the edge, or in multi-region environments
  • Multi-modal context support – Access structured and unstructured data without external dependencies

Open Source and Ready to Use

Harper’s MCP server is open source under the MIT license and available today on GitHub:
https://github.com/HarperDB/mcp-server

“MCP is emerging as a foundational standard for LLM-native development. Our implementation reflects Harper’s core philosophy — that context and computation belong together, not separated by layers of infrastructure.”
Stephen Goldberg, CEO, Harper

For technical inquiries or media requests, please contact hello@harperdb.io

Harper announces the launch of its open-source Model Context Protocol (MCP) server, natively integrated into its data engine. This advancement delivers a high-performance, unified platform for LLM-native applications, enabling efficient, multi-modal context retrieval with minimal infrastructure overhead.

Download

White arrow pointing right
Harper announces the launch of its open-source Model Context Protocol (MCP) server, natively integrated into its data engine. This advancement delivers a high-performance, unified platform for LLM-native applications, enabling efficient, multi-modal context retrieval with minimal infrastructure overhead.

Download

White arrow pointing right
Harper announces the launch of its open-source Model Context Protocol (MCP) server, natively integrated into its data engine. This advancement delivers a high-performance, unified platform for LLM-native applications, enabling efficient, multi-modal context retrieval with minimal infrastructure overhead.

Download

White arrow pointing right

Explore Recent Resources

Media Coverage
GitHub Logo

Harper Argues Against the Multi-System Stack and Releases 5.2

InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Media Coverage
InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Renato Losio, Staff Editor at InfoQ
Renato Losio
InfoQ Staff Editor
Media Coverage

Harper Argues Against the Multi-System Stack and Releases 5.2

InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Renato Losio
Aug 2026
Media Coverage

Harper Argues Against the Multi-System Stack and Releases 5.2

InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Renato Losio
Media Coverage

Harper Argues Against the Multi-System Stack and Releases 5.2

InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Renato Losio
Blog
GitHub Logo

Faster by Doing Less: How Harper 5.2 Engineers Database Performance

Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Cache
Blog
Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Person with very short blonde hair wearing a light gray button‑up shirt, standing with arms crossed and smiling outdoors with foliage behind.
Kris Zyp
SVP of Engineering
Blog

Faster by Doing Less: How Harper 5.2 Engineers Database Performance

Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Kris Zyp
Aug 2026
Blog

Faster by Doing Less: How Harper 5.2 Engineers Database Performance

Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Kris Zyp
Blog

Faster by Doing Less: How Harper 5.2 Engineers Database Performance

Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Kris Zyp
News
GitHub Logo

Harper Recognized as an Honorable Mention in the 2026 Gartner® Magic Quadrant™ for Cloud-Native Application Platforms

Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Announcement
News
Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Person with short dark hair and moustache, wearing a colorful plaid shirt, smiling outdoors in a forested mountain landscape.
Aleks Haugom
Senior Manager of GTM
News

Harper Recognized as an Honorable Mention in the 2026 Gartner® Magic Quadrant™ for Cloud-Native Application Platforms

Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Aleks Haugom
Aug 2026
News

Harper Recognized as an Honorable Mention in the 2026 Gartner® Magic Quadrant™ for Cloud-Native Application Platforms

Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Aleks Haugom
News

Harper Recognized as an Honorable Mention in the 2026 Gartner® Magic Quadrant™ for Cloud-Native Application Platforms

Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Aleks Haugom
News
GitHub Logo

Harper 5.2: More Throughput per Node, Fewer Systems Around It

Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Product Update
News
Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Person with short dark hair and moustache, wearing a colorful plaid shirt, smiling outdoors in a forested mountain landscape.
Aleks Haugom
Senior Manager of GTM
News

Harper 5.2: More Throughput per Node, Fewer Systems Around It

Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Aleks Haugom
Aug 2026
News

Harper 5.2: More Throughput per Node, Fewer Systems Around It

Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Aleks Haugom
News

Harper 5.2: More Throughput per Node, Fewer Systems Around It

Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Aleks Haugom