Gatewarden Nexus

Alpha Plugin

nexus-knowledge-graph

v0.1.0Alpha

Transforms uploaded documents into a searchable knowledge graph with entity and relationship extraction.

Overview

Uploaded PDFs, Markdown files, and DOCX documents are analyzed by an extraction service (AWS Textract) to identify entities, relationships, and structural elements. Results are stored in a PostgreSQL-native graph schema as part of the Nexus database, making them queryable by agents via dedicated MCP tools. Enables cross-document relationship discovery and semantic navigation.

Key Features

  • PDF / Markdown / DOCX extraction pipeline
  • Entity + relationship extraction (AWS Textract)
  • PostgreSQL-native graph schema (part of Nexus DB)
  • MCP tools for agent graph traversal

Registered Hooks

Events this plugin listens to in the OpenCode runtime.

document.ingested

Triggers extraction pipeline when a new document is uploaded or ingested into a project.

Custom Tools

MCP tools this plugin exposes to agents.

nexus_graph_query

Traverses the knowledge graph to find entities, relationships, or paths between concepts.

nexus_graph_status

Reports extraction status and graph statistics for a project (node count, edge count, pending documents).

Technical Details

Pricing€1.99/month per tenant. Available on Pro and Enterprise plans.
Extraction BackendAWS Textract for OCR + entity extraction. PostgreSQL graph schema (no external graph DB required).
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