MongoDB Store

The MongoDB store (store/mongo) provides a document-oriented backend using the Grove ORM with mongodriver. It stores Cortex entities in 10 MongoDB collections with compound indexes for efficient queries scoped by app and tenant.

Setup01

import (
    "github.com/xraph/grove"
    "github.com/xraph/grove/drivers/mongodriver"
    "github.com/xraph/cortex/store/mongo"
)

// Open a MongoDB connection via Grove's mongodriver.
db := grove.Open(mongodriver.New(
    mongodriver.WithURI("mongodb://localhost:27017"),
    mongodriver.WithDatabase("cortex"),
))

s := mongo.New(db)
if err := s.Migrate(ctx); err != nil {
    log.Fatal(err)
}

Internals02

Aspect	Detail
Driver	Grove ORM with `mongodriver` (MongoDB)
Migrations	Grove migrations with JSON Schema validation + indexes
Transactions	Individual operations are atomic; multi-document transactions require explicit sessions

Collections03

Collection	Entity
`cortex_agents`	Agent configs
`cortex_skills`	Skills
`cortex_traits`	Traits
`cortex_behaviors`	Behaviors
`cortex_personas`	Personas
`cortex_runs`	Runs
`cortex_steps`	Steps
`cortex_tool_calls`	Tool calls
`cortex_memories`	Memories
`cortex_checkpoints`	Checkpoints

Composite store interface04

The MongoDB store implements all 8 sub-interfaces:

type Store interface {
    agent.Store
    skill.Store
    trait.Store
    behavior.Store
    persona.Store
    run.Store
    memory.Store
    checkpoint.Store

    Migrate(ctx context.Context) error
    Ping(ctx context.Context) error
    Close() error
}

Usage with engine05

eng, err := engine.New(
    engine.WithStore(s),
)

Grove Migrations06

The store exports a Migrations group for use with Grove's migration orchestrator. This enables tracked, versioned migrations across all stores in your application:

import mongostore "github.com/xraph/cortex/store/mongo"

// mongostore.Migrations is a migrate.Group for the cortex mongo store.
// Register it with the grove migration orchestrator for coordinated migrations.

When to use07

Document-oriented workloads -- flexible schemas that evolve with your application.
Horizontal scaling -- MongoDB sharding for large-scale deployments.
Cloud-native -- MongoDB Atlas for fully managed deployments.
Teams familiar with MongoDB -- leverage existing document database expertise.

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