Theosis

Theological Research AI Interface — PostgreSQL-backed MCP server for deep Bible study.

Connect any MCP-compatible AI (Claude, GPT, local LLMs via Open WebUI) to a unified theological database with 140+ Bible translations, Greek/Hebrew lexicons, 340K+ cross-references, Church Fathers, Apocrypha, Pseudepigrapha, and AI-powered semantic search.

Features

• Word Studies: LSJ Greek, BDB Hebrew, Abbott-Smith NT lexicons (19K+ entries)
• Original Languages: Morphologically-tagged Greek NT and Hebrew OT (31K verses)
• Cross-References: 340K+ connections from TSK, Harrison/Romhild, and scholarly sources
• Study Notes: Aquifer Open Study Notes (102K entries) + Tyndale Bible Dictionary
• 140+ Translations: Side-by-side comparison with full-text PostgreSQL tsvector search
• Extra-Biblical Library: Church Fathers, Apocrypha, Pseudepigrapha (69+ texts)
• Semantic Search: pgvector embeddings for finding thematically related passages
• ANE Context: Ancient Near East cultural background across 9 historical periods
• Theographic Data: 1,100+ biblical persons with genealogy and relationship graphs

Quick Start

# Set database URL
export THEOSIS_DATABASE_URL="postgresql://theosis:***@192.168.1.130:5432/theosis"

# Run as stdio MCP server (for Claude Desktop, Cursor, etc.)
uvx theosis-mcp --transport stdio

# Run as Streamable HTTP server (for Open WebUI)
uvx theosis-mcp --transport streamable-http --host 0.0.0.0 --port 8000

Open WebUI Integration

1. In Open WebUI Admin Settings → External Tools, add an MCP connection:

   • URL: http://192.168.1.130:8000/mcp
   • Transport: Streamable HTTP

2. All tools become available to any model in Open WebUI

Tools

Tool	Description
word_study	Deep dive into Greek/Hebrew words with full lexicon data
lookup_verse	Get verse text with original language and morphology
search_lexicon	Search LSJ/BDB/Strong's by English concepts
get_cross_references	Find scholarly cross-reference connections
lookup_name	Biblical persons, places with relationship data
parse_morphology	Explain Greek/Hebrew grammatical codes
search_by_strongs	Find all verses using a specific Greek/Hebrew word
find_similar_passages	Semantic search with pgvector embeddings
explore_genealogy	Multi-generational family trees
get_study_notes	Aquifer study notes and Tyndale dictionary
get_dictionary_article	Full Tyndale Bible Dictionary articles
get_ane_context	Ancient Near East cultural background
get_theology_context	Systematic theological themes
list_translations	Browse 140+ available Bible translations
get_translation_verse	Get a verse in a specific translation
compare_translations	Side-by-side translation comparison
search_bible_fulltext	Full-text search across all translations
list_extra_biblical_categories	Browse Church Fathers library
search_extra_biblical	Search Church Fathers, Apocrypha, Pseudepigrapha
get_extra_biblical_text	Read specific extra-biblical texts
get_reading_plan	Generate structured Bible reading plans

Credits

Built on the foundation of StudyBible MCP by David Jayatillake. Data from scrollmapper/bible_databases, STEPBible (CC BY 4.0), and the Theographic Bible Knowledge Graph.

License

MIT