Justin Castilla

Justin Castilla

Senior Developer Advocate

Justin Castilla is a Python and Javascript programmer, educator, and overall hypeman for fun code. He currently works at Elastic as a Senior Developer Advocate. In his spare time, he loves to tinker with IoT, collect vintage synthesizers, and build elaborate mansions for his two cats.

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Articles by Justin Castilla
Creating an LLM agent newsroom with A2A protocol and MCP in Elasticsearch: Part II
Elasticsearch Labs

Creating an LLM agent newsroom with A2A protocol and MCP in Elasticsearch: Part II

Discover how to build a specialized hybrid LLM agent newsroom using A2A Protocol for agent collaboration and MCP for tool access in Elasticsearch.

Justin Castilla
Creating an LLM Agent newsroom with A2A protocol and MCP in Elasticsearch: Part I
Elasticsearch Labs

Creating an LLM Agent newsroom with A2A protocol and MCP in Elasticsearch: Part I

Explore the concepts of A2A protocol and MCP within a practical newsroom example where specialized LLM agents collaborate to research, write, edit, and publish news articles.

Justin Castilla
MCP for intelligent search
Elasticsearch Labs

MCP for intelligent search

Building an intelligent search system by integrating Elastic's intelligent query layer with MCP to enhance the generative efficacy of LLMs.

Sunile Manjee
Elasticsearch string contains substring: Advanced query techniques
Elasticsearch Labs

Elasticsearch string contains substring: Advanced query techniques

Explore techniques for querying Elasticsearch to find documents where a field contains a specific substring.

Justin Castilla
Navigating an Elastic vector database
Elasticsearch Labs

Navigating an Elastic vector database

An overview of operating a modern Elastic vector database with practical code samples.

Justin Castilla