Moleculer website screenshot

Moleculer

Moleculer is a fast, modern, and powerful microservices framework for Node.js. It provides built-in service discovery, load balancing, fault tolerance with circuit breaker, request retries, distributed event handling, and support for multiple serializers and transporters including NATS, Redis, MQTT, and AMQP.

Moleculer publishes 1 API on the APIs.io network. Tagged areas include Fault Tolerance, Frameworks, JavaScript, Load Balancing, and Microservices.

The Moleculer catalog on APIs.io includes 1 Spectral governance ruleset.

Moleculer’s developer surface includes documentation, getting-started guide, code examples, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub
33.6/100 thin ▬ flat Agent 5/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
1 APIs
Fault ToleranceFrameworksJavaScriptLoad BalancingMicroservicesNode.jsService Discovery

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 33.6/100 · thin
Contract Quality 4.0 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 7.0 / 12
Discoverability 5.9 / 10
Agent readiness — 5/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 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/moleculer: 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 1

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

Moleculer

Moleculer is a fast, modern, and powerful microservices framework for Node.js. It provides built-in service discovery, load balancing, fault tolerance with circuit breaker, requ...

Pricing Plans 1

Published pricing tiers and plan structures.

Moleculer Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Moleculer Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Moleculer Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Moleculer API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Moleculer Broker Configuration

24 properties

JSON SCHEMA

Moleculer Service Schema

13 properties

JSON SCHEMA

Security Posture 1

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

Moleculer Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText
LlmsText

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 GitHubRepository
GitHubRepository
 Examples
Examples

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: moleculer
name: Moleculer
description: Moleculer is a fast, modern, and powerful microservices framework for Node.js. It provides built-in service discovery,
  load balancing, fault tolerance with circuit breaker, request retries, distributed event handling, and support for multiple
  serializers and transporters including NATS, Redis, MQTT, and AMQP.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/moleculer.png
tags:
- Fault Tolerance
- Frameworks
- JavaScript
- Load Balancing
- Microservices
- Node.js
- Service Discovery
url: https://raw.githubusercontent.com/api-evangelist/moleculer/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-04-28'
specificationVersion: '0.19'
apis:
- aid: moleculer:moleculer
  name: Moleculer
  description: Moleculer is a fast, modern, and powerful microservices framework for Node.js. It provides built-in service
    discovery, load balancing, fault tolerance with circuit breaker, request retries, distributed event handling, and support
    for multiple serializers and transporters including NATS, Redis, MQTT, and AMQP.
  humanURL: https://moleculer.services/
  tags:
  - Fault Tolerance
  - Frameworks
  - JavaScript
  - Load Balancing
  - Microservices
  - Node.js
  - Service Discovery
  properties:
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/moleculer/refs/heads/main/json-schema/moleculer-config.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/moleculer/refs/heads/main/json-schema/moleculer-service.json
common:
- type: DomainSecurity
  url: security/moleculer-domain-security.yml
- type: Website
  url: https://moleculer.services/
- type: Documentation
  url: https://moleculer.services/docs/0.14/
- type: GettingStarted
  url: https://moleculer.services/docs/0.14/usage.html
- type: GitHubOrganization
  url: https://github.com/moleculerjs
- type: GitHubRepository
  url: https://github.com/moleculerjs/moleculer
- type: Examples
  url: https://github.com/moleculerjs/moleculer-examples
- type: LlmsText
  url: https://moleculer.services/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com