The EDB folder in Langflow contains components that connect flows to resources managed by Hybrid Manager (HM): knowledge bases, databases, vector indexes, embedding and model server clusters, embedded models, and MCP tooling.
| Component | Connects flow to | Required roles |
|---|---|---|
| EDB Knowledge Base | An AIDB knowledge base in an HM cluster | Project Viewer |
| EDB Vector Index | Vector indexes on Postgres tables (pgvector) | Project Viewer |
| EDB Database | A Postgres database in an HM cluster | Project Viewer |
| EDB Airman MCP | The Airman MCP server's tools | None (requires valid PG connection string) |
| EDB Platform | HM platform MCP tools for the current user | Depends on operations invoked |
| EDB Embeddings | An HM-hosted embedding model | AI Model Manager |
| EDB Model Server | An HM-hosted inference model (LLM or other) | AI Model Manager |
| EDB Embedded Models | AIDB embedded models for CPU-based inference | Project Viewer |
See the parent Langflow page for role requirements and Global Variables setup.
EDB Knowledge Base
Langflow component that performs semantic similarity search, optionally combined with column filtering, against an AIDB knowledge base in a Hybrid Manager cluster.
EDB Vector Index
Langflow component that creates, drops, rebuilds, or checks pgvector indexes on PostgreSQL tables in a Hybrid Manager cluster.
EDB Database
Langflow component that produces a Postgres connection URL for a database in a Hybrid Manager cluster.
EDB Airman MCP
Langflow component that exposes a Postgres database to agents as MCP tools, with read-only or unrestricted SQL access.
EDB Platform
Langflow component that exposes Hybrid Manager platform operations (projects, clusters, knowledge bases, and more) as MCP tools to an agent.
EDB Embeddings
Langflow component that produces embedding vectors via a Hybrid Manager-hosted embedding model cluster.
EDB Model Server
Langflow component that calls an inference model (LLM or other) hosted on a Hybrid Manager model server cluster.
EDB Embedded Models
Langflow component that runs CPU-based inference (text and image embeddings, text generation) directly on a Postgres cluster using the aidb extension.