Milvus

Milvus is an Apache 2.0 open-source vector database. It exposes a versioned REST API alongside gRPC and language SDKs (Python, Go, Java, Node.js). Maintained by Zilliz; LF AI & Data Foundation graduated project.

Milvus publishes 6 APIs on the APIs.io network, including Collections API, Entities API, Indexes API, and 3 more. Tagged areas include Vector Database, Artificial Intelligence, Embeddings, Open-Source, and Cloud-Native.

Milvus’ developer surface includes authentication, developer portal, engineering blog, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

30.6/100 thin ▬ flat Agent 29/100 agent aware Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

AccessSelf serve

8 APIs

Vector Database Artificial Intelligence Embeddings Open-Source Cloud-Native

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 30.6/100 · thin

Contract Quality 12.5 / 25

Developer Ergonomics 4.5 / 20

Access Clarity 2.6 / 20

Operational Transparency 2.7 / 13

Contract Governance 0.0 / 12

Discoverability 8.2 / 10

Agent readiness — 29/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/milvus: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 8

Individual APIs this provider publishes, each with its own machine-readable definition.

GraphQL 1

GraphQL schemas published by this provider.

Rate Limits 1

Documented rate limits and quota policies.

Milvus Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Documentation 1

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

SourceCode

SourceCode

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

Releases

Releases

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

License

License

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

LF AI & Data

Foundation

Zilliz Cloud

CommercialOffering

Source (apis.yml)

aid: milvus
url: https://raw.githubusercontent.com/api-evangelist/milvus/refs/heads/main/apis.yml
name: Milvus
kind: opensource
description: Milvus is an Apache 2.0 open-source vector database. It exposes a versioned REST API alongside gRPC and language
  SDKs (Python, Go, Java, Node.js). Maintained by Zilliz; LF AI & Data Foundation graduated project.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/milvus.png
tags:
- Vector Database
- Artificial Intelligence
- Embeddings
- Open-Source
- Cloud-Native
tags_raw:
- Vector Database
- AI
- Embeddings
- Open Source
- Cloud-Native
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
apis:
- aid: milvus:milvus-rest-api-v2
  name: Milvus REST API v2
  humanURL: https://milvus.io/api-reference/restful/v2.5.x/About.md
  baseURL: http://{milvus_host}:19530/v2/vectordb
  tags:
  - REST
  - Collection
  - Vectors
  - Index
  - Partitions
  tags_raw:
  - REST
  - Collections
  - Vectors
  - Index
  - Partitions
  description: 'Milvus v2 REST API covers collections, partitions, vectors, search, query, indexes, and role/RBAC management.
    Authentication: Bearer token formed from `username:password` when auth is enabled (off by default in self-hosted dev).'
  properties:
  - type: Documentation
    url: https://milvus.io/api-reference/restful/v2.5.x/About.md
  - type: Authentication
    url: https://milvus.io/api-reference/restful/v2.5.x/About.md
  - type: SDKs
    title: Python (pymilvus)
    url: https://github.com/milvus-io/pymilvus
  - type: SDKs
    title: Go (milvus-sdk-go)
    url: https://github.com/milvus-io/milvus-sdk-go
  - type: SDKs
    title: Java (milvus-sdk-java)
    url: https://github.com/milvus-io/milvus-sdk-java
  - type: SDKs
    title: Node.js (milvus-sdk-node)
    url: https://github.com/milvus-io/milvus-sdk-node
  - url: graphql/milvus-graphql.md
    type: GraphQL
- aid: milvus:milvus-grpc
  name: Milvus gRPC API
  humanURL: https://milvus.io/docs/grpc.md
  baseURL: grpc://{milvus_host}:19530
  tags:
  - gRPC
  - High Throughput
  description: gRPC is the canonical, high-throughput interface to Milvus. The official SDKs are gRPC-based; the REST API
    is a thin wrapper for non-Go/Python/Java clients.
  properties:
  - type: Documentation
    url: https://milvus.io/docs/
- aid: milvus:milvus-collections-api
  name: Milvus Collections API
  description: The Collections API from Milvus — 11 operation(s) for collections.
  humanURL: https://milvus.io/api-reference/restful/v2.5.x/About.md
  baseURL: http://{milvus_host}:19530/v2/vectordb
  tags:
  - Collection
  tags_raw:
  - Collections
  properties:
  - type: OpenAPI
    url: openapi/milvus-collections-api-openapi.yml
- aid: milvus:milvus-entities-api
  name: Milvus Entities API
  description: The Entities API from Milvus — 7 operation(s) for entities.
  humanURL: https://milvus.io/api-reference/restful/v2.5.x/About.md
  baseURL: http://{milvus_host}:19530/v2/vectordb
  tags:
  - Entities
  properties:
  - type: OpenAPI
    url: openapi/milvus-entities-api-openapi.yml
- aid: milvus:milvus-indexes-api
  name: Milvus Indexes API
  description: The Indexes API from Milvus — 4 operation(s) for indexes.
  humanURL: https://milvus.io/api-reference/restful/v2.5.x/About.md
  baseURL: http://{milvus_host}:19530/v2/vectordb
  tags:
  - Indexes
  properties:
  - type: OpenAPI
    url: openapi/milvus-indexes-api-openapi.yml
- aid: milvus:milvus-partitions-api
  name: Milvus Partitions API
  description: The Partitions API from Milvus — 3 operation(s) for partitions.
  humanURL: https://milvus.io/api-reference/restful/v2.5.x/About.md
  baseURL: http://{milvus_host}:19530/v2/vectordb
  tags:
  - Partitions
  properties:
  - type: OpenAPI
    url: openapi/milvus-partitions-api-openapi.yml
- aid: milvus:milvus-roles-api
  name: Milvus Roles API
  description: The Roles API from Milvus — 2 operation(s) for roles.
  humanURL: https://milvus.io/api-reference/restful/v2.5.x/About.md
  baseURL: http://{milvus_host}:19530/v2/vectordb
  tags:
  - Roles
  properties:
  - type: OpenAPI
    url: openapi/milvus-roles-api-openapi.yml
- aid: milvus:milvus-users-api
  name: Milvus Users API
  description: The Users API from Milvus — 2 operation(s) for users.
  humanURL: https://milvus.io/api-reference/restful/v2.5.x/About.md
  baseURL: http://{milvus_host}:19530/v2/vectordb
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/milvus-users-api-openapi.yml
common:
- type: IssueTracker
  url: https://github.com/milvus-io/milvus/issues
- type: Releases
  url: https://github.com/milvus-io/milvus/releases
- type: CodeOfConduct
  url: https://github.com/milvus-io/milvus/blob/master/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/milvus-io/milvus/blob/master/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/milvus-io/milvus/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/milvus-agentic-access.yml
- type: DomainSecurity
  url: security/milvus-domain-security.yml
- type: Authentication
  url: authentication/milvus-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/the-milvus-project
- type: Website
  url: https://milvus.io/
- type: Portal
  url: https://milvus.io/docs/
- type: SourceCode
  url: https://github.com/milvus-io/milvus
- type: Foundation
  title: LF AI & Data
  url: https://lfaidata.foundation/projects/milvus/
- type: CommercialOffering
  title: Zilliz Cloud
  url: https://zilliz.com/
- type: Plans
  url: plans/milvus-plans-pricing.yml
- type: RateLimits
  url: rate-limits/milvus-rate-limits.yml
- type: FinOps
  url: finops/milvus-finops.yml
- type: LlmsText
  url: https://milvus.io/llms.txt
- type: Blog
  url: https://milvus.io/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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