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 is listed with 1 API on the APIs.io network. Tagged areas include Fault Tolerance, Framework, JavaScript, Load Balancing, and Microservices.

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

Moleculer’s developer surface includes engineering blog, documentation, getting-started guide, code examples, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.6/100 thin ▬ flat Agent 2/100 human only Front door AI 1/6 silent Heartbeat 90/100 alive self hosted · MIT Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 API

Fault Tolerance Framework JavaScript Load Balancing Microservices Node.js Service Discovery

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 29.6/100 · thin

Contract Quality 3.5 / 19

Developer Ergonomics 3.6 / 15

Access Clarity 1.2 / 15

Operational Transparency 3.6 / 10

Contract Governance 0.9 / 9

Discoverability 4.8 / 8

Regulatory Posture 0.9 / 15

Open Source Surface 10.0 / 10

Agent readiness — 2/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 75 points between them, because both conditional facets apply and carry 25 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

11 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 18.5 — up to +20.4 composite points
Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 23.8 — up to +15.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/moleculer/apis.yml: open an issue on github.com/api-evangelist/moleculer to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Cisco DevNet Ecosystem (builders on Meraki, Catalyst, ISE, ThousandEyes, Splunk)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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...

Moleculer API pricing

Not yet checked against Moleculer's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Moleculer's documentation. All 5 limits →

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 — jsonschema 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 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText

LlmsText

Build 4

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Examples

Examples

Access & Security 2

Authentication, authorization, and security posture

SecurityPolicy

SecurityPolicy

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

IssueTracker

IssueTracker

Releases

Releases

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

License

License

Company 3

The organization behind the API

Blog

Blog

BlogRSS

BlogRSS

Website

Website

Source (apis.yml)

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
deliveryModel:
  model: self-hosted
  license: MIT
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/moleculer.png
tags:
- Fault Tolerance
- Framework
- JavaScript
- Load Balancing
- Microservices
- Node.js
- Service Discovery
tags_raw:
- 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: '2026-10-06'
specificationVersion: '0.23'
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
  - Framework
  - JavaScript
  - Load Balancing
  - Microservices
  - Node.js
  - Service Discovery
  tags_raw:
  - 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: Plans
  url: plans/moleculer-plans-pricing.yml
- type: RateLimits
  url: rate-limits/moleculer-rate-limits.yml
- type: FinOps
  url: finops/moleculer-finops.yml
- url: https://medium.com/moleculer
  type: Blog
- url: https://medium.com/feed/moleculer
  type: BlogRSS
- type: IssueTracker
  url: https://github.com/moleculerjs/moleculer/issues
- type: Releases
  url: https://github.com/moleculerjs/moleculer/releases
- type: SecurityPolicy
  url: https://github.com/moleculerjs/moleculer/blob/master/SECURITY.md
- type: CodeOfConduct
  url: https://github.com/moleculerjs/moleculer/blob/master/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/moleculerjs/moleculer/blob/master/CONTRIBUTING.md
- type: License
  name: MIT
  url: https://github.com/moleculerjs/moleculer/blob/master/LICENSE
- 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

Moleculer API — frequently asked questions

Does Moleculer have an API?

Yes. APIs.io lists 1 API from Moleculer, including Moleculer.

How much does the Moleculer API cost?

APIs.io lists 3 pricing plans for Moleculer, with each plan's price, limits and inclusions under Pricing on this page.

Is the Moleculer API ready for AI agents?

Moleculer has a Kin Score of 29.6 out of 100 (thin) and an Agent Readiness score of 1.9 (human-only), scored by API Evangelist on 2026-11-06.

Work with this as data

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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.

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