Marqo (marqo)

Marqo is an open-source, multimodal vector search engine that lets developers index text and images, generate embeddings on the fly, and run tensor, lexical, and hybrid search through a single REST API. Built on Vespa for storage and retrieval and FastAPI for the HTTP surface, Marqo bundles model inference (Sentence Transformers, OpenCLIP, ONNX) inside the engine so a single docker run produces a working semantic search stack. The Apache 2.0 open-source engine has been marked deprecated by the maintainers as Marqo pivots to a hosted ecommerce search product, but the project remains widely forked, downloaded, and self-hosted, with active sibling repositories for the Python client, Terraform provider, InstantSearch client, ecommerce embedding models, and Generalised Contrastive Learning research.

APIs.json: https://raw.githubusercontent.com/api-evangelist/marqo/refs/heads/main/apis.yml

Scope

• Type: Index
• Position: Consumer
• Access: 3rd-Party

Tags

• Vector Database
• Vector Search
• Multimodal
• Semantic Search
• Embeddings
• AI
• Machine Learning
• Open Source
• Ecommerce Search

Timestamps

• Created: 2026-05-08
• Modified: 2026-05-25

APIs

Marqo REST API

The Marqo REST API is the HTTP surface exposed by the open-source engine (default http://localhost:8882). It provides index lifecycle management, document add/update/get/delete, lexical/tensor/hybrid search, recommendations, embedding generation, model lifecycle, telemetry, and health endpoints. The same surface is served by Marqo Cloud at https://api.marqo.ai, and the live OpenAPI schema is published by the running engine at /openapi.json with Swagger UI at /docs.

• Human URL: https://docs.marqo.ai/
• Base URL: http://localhost:8882

Tags

• REST
• Indexes
• Documents
• Search
• Embeddings
• Models
• Multimodal

Properties

• Documentation
• OpenAPI — OpenAPI Specification
• Postman Collection — Postman Collection 2.1
• Open Collection — Open Collection 1.0
• API Reference
• Getting Started
• Source Code
• Deprecation

Common Properties

• Website
• GitHub Organization
• GitHub Repository
• LinkedIn
• Documentation
• Getting Started
• License
• Blog
• Pricing
• Plans
• Rate Limits
• Fin Ops
• SDK
• SDK
• Tools
• Tools
• Tools
• Models
• Models
• Research
• Examples
• Course
• Features
• Use Cases
• Integrations

Maintainers

FN: Kin Lane Email: kin@apievangelist.com