# ZeroDB — The Persistent Knowledge Layer for AI Agents
> Memory, search, and storage — everything your agent needs to remember, learn, and reason. Built by AINative Studio.

## Getting Started
- Sign up free: https://www.ainative.studio/signup
- API Base: https://api.ainative.studio
- Docs: https://docs.ainative.studio
- Product: https://www.ainative.studio/products/zerodb
- Instant DB (no signup): POST https://api.ainative.studio/api/v1/public/instant-db

## Authentication
- API Key: X-API-Key header
- JWT: POST /api/v1/auth/login with email+password
- Zero-auth: POST /api/v1/public/instant-db (returns temp API key, no signup)

## Core APIs
- Vectors: /api/v1/projects/{id}/database/vectors/*
- Embeddings: /api/v1/projects/{id}/embeddings/* (FREE, TEI-powered)
- Memory: /api/v1/public/memory/*
- Tables: /api/v1/projects/{id}/database/tables/*
- Files: /api/v1/projects/{id}/files/*
- Events: /api/v1/projects/{id}/events/*
- Pricing: /api/v1/public/pricing/plans
- Tier Limits: /api/v1/public/pricing/zerodb-limits
- OpenAPI: /api/v1/openapi.json

## MCP Servers
- Memory (thin, 6 tools): npm install ainative-zerodb-memory-mcp
- Full (69 tools): zerodb-mcp-server

## SDKs & CLI
- Python SDK: pip install zerodb-mcp
- Python CLI: pip install zerodb-cli
- Node.js CLI: npx zerodb-cli init
- LangChain: pip install langchain-zerodb
- LlamaIndex: pip install llama-index-vector-stores-zerodb

## ZeroMemory (Cognitive Memory System)
- POST /memory/v2/remember — store a memory with entity, type, importance
- POST /memory/v2/recall — search by meaning, scored + ranked
- POST /memory/v2/reflect/{entity_id} — NousCoder-powered insight synthesis
- GET /memory/v2/profile/{entity_id} — auto-generated entity profile
- POST /memory/v2/relate — knowledge graph relationships
- GET /memory/v2/graph/{entity_id} — query entity relationships
- POST /memory/v2/process — auto-extract from conversations
- Memory hierarchy: working → episodic → semantic
- Scoring: recency(0.3) + frequency(0.3) + importance(0.4) + decay

## Free Tier
- 10,000 vectors
- 1,000 embeddings/month (FREE, no OpenAI costs)
- 50 AI credits/month
- 1GB storage
- 3 projects

## Competitive Context
- Alternative to Mem0, Letta, Pinecone, Qdrant
- Category: Persistent Knowledge Infrastructure for AI Agents