Milvus website screenshot

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
42.8/100 developing ▬ flat Agent 20/100 agent aware open core · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
1 APIs
Vector DatabaseArtificial IntelligenceEmbeddingsOpen-SourceCloud-Native

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 42.8/100 · developing
Contract Quality 9.8 / 20
Developer Ergonomics 7.8 / 16
Access Clarity 2.1 / 16
Operational Transparency 2.7 / 10
Contract Governance 0.0 / 10
Discoverability 6.1 / 8
Open Source Surface 6.5 / 10
Create-or-Update Ergonomics 5.0 / 10
Agent readiness — 20/100 · 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
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 8

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

Milvus REST API v2

Milvus v2 REST API covers collections, partitions, vectors, search, query, indexes, and role/RBAC management. Authentication: Bearer token formed from `username:password` when a...

Milvus gRPC API

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.

Milvus Collections API

The Collections API from Milvus — 11 operation(s) for collections.

Milvus Entities API

The Entities API from Milvus — 7 operation(s) for entities.

Milvus Indexes API

The Indexes API from Milvus — 4 operation(s) for indexes.

Milvus Partitions API

The Partitions API from Milvus — 3 operation(s) for partitions.

Milvus Roles API

The Roles API from Milvus — 2 operation(s) for roles.

Milvus Users API

The Users API from Milvus — 2 operation(s) for users.

Scroll for all 8

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Milvus REST Collections API

OPEN COLLECTION

Milvus REST Collections Entities API

OPEN COLLECTION

Milvus REST Collections Indexes API

OPEN COLLECTION

Milvus REST Collections Partitions API

OPEN COLLECTION

Milvus REST Collections Roles API

OPEN COLLECTION

Milvus REST Collections Users API

OPEN COLLECTION

Milvus REST API

OPEN COLLECTION

Scroll for all 8

GraphQL 1

GraphQL schemas published by this provider.

Milvus GraphQL API

Milvus is an open-source vector database built for scalable similarity search. The API covers collection and index management, data insertion, vector search with filtering, part...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Milvus Plans Pricing

1 plans

PLANS

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.

Milvus Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Milvus Authentication

http · 1 scheme

SECURITY

Milvus Domain Security

TLSv1.3

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Milvus Agentic Access

29 operations · 26 acting

29 operations · 26 acting

AGENTIC

Resources

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
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)

apis.yml Raw ↑ 
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.
deliveryModel:
  model: open-core
  license: Apache-2.0
  open_source: true
  commercial: true
  callable_host: false
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  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

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this
  • find_providersBrowse and filter every provider in the catalog.
  • get_provider_artifactsEvery artifact this provider publishes, grouped by type.
  • get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
  • get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
  • get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
  • get_provider_ratingPRO — composite, band, trend and facet scores.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This provider 
curl "https://apis.io/api/v1/providers/milvus"
All providers 
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose 
curl "https://apis.io/api/v1/providers/milvus/operations?limit=25"
How their score was established 
curl "https://apis.io/api/v1/providers/milvus/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.