RubyGems website screenshot

RubyGems

RubyGems.org is the Ruby community's primary gem hosting service, providing the infrastructure for publishing, discovering, and installing Ruby gems. The RubyGems API enables programmatic access to gem metadata, version information, download statistics, search, owner management, webhooks, and the compact index used by Bundler for dependency resolution. RubyGems.org hosts over 160,000 gems with billions of total downloads.

RubyGems publishes 9 APIs on the APIs.io network, including Gems API, Downloads API, Search API, and 6 more. Tagged areas include Ruby, Package Manager, Open-Source, and Developer Tools.

The RubyGems catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.

RubyGems’ developer surface includes authentication, developer portal, documentation, GitHub presence, engineering blog, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub
36.7/100 thin ▬ flat Agent 33/100 agent ready Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
1 APIs
RubyPackage ManagerOpen-SourceDeveloper Tools

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 36.7/100 · thin
Contract Quality 14.4 / 23
Developer Ergonomics 6.0 / 18
Access Clarity 2.4 / 18
Operational Transparency 3.4 / 12
Contract Governance 1.5 / 11
Discoverability 6.0 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 33/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 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
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.
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/rubygems: 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 9

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

RubyGems Gems API

The RubyGems Gems API (v1) provides endpoints for retrieving gem metadata, listing owned gems, submitting new gems, yanking gem versions, managing gem ownership, retrieving user...

RubyGems Downloads API

The RubyGems Downloads API provides download count statistics for gems and individual gem versions hosted on RubyGems.org.

RubyGems Search API

The RubyGems Search API allows developers to search for gems by matching a query string against gem names and descriptions. Returns paginated results of active gems.

RubyGems Activity API

The RubyGems Activity API provides activity feeds of the most recently added and most recently updated gems on RubyGems.org, useful for monitoring new releases and tracking ecos...

RubyGems Webhooks API

The RubyGems Webhooks API enables webhook subscriptions that fire when gems are pushed to RubyGems.org. Webhooks can be scoped to a specific gem or applied globally using a wild...

RubyGems Dependencies API

Endpoints for querying gem dependency information.

RubyGems Owners API

Endpoints for managing gem ownership, including listing owners, adding and removing owners, and listing gems by owner.

RubyGems Profiles API

Endpoints for retrieving user profile information from RubyGems.org.

RubyGems Versions API

Endpoints for querying detailed version information for specific gem versions, including metadata, dependencies, checksums, and platform-specific builds.

Scroll for all 9

Open Collections 11

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

API Collection

OPEN COLLECTION

RubyGems Activity API

OPEN COLLECTION

RubyGems API V2

OPEN COLLECTION

RubyGems Activity Dependencies API

OPEN COLLECTION

RubyGems Activity Downloads API

OPEN COLLECTION

RubyGems Activity Gems API

OPEN COLLECTION

RubyGems Activity Owners API

OPEN COLLECTION

RubyGems Activity Profiles API

OPEN COLLECTION

RubyGems Activity Search API

OPEN COLLECTION

RubyGems Activity Versions API

OPEN COLLECTION

RubyGems Activity Webhooks API

OPEN COLLECTION

Scroll for all 11

Pricing Plans 1

Published pricing tiers and plan structures.

Rubygems Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rubygems Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

Rubygems Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

RubyGems Webhook Events

The RubyGems webhook event system delivers HTTP POST notifications when gems are pushed to RubyGems.org. Webhook subscribers receive a JSON payload containing the full gem metad...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Rubygems Context

0 classes · 5 properties

JSON-LD

Spectral Rules 3

Spectral governance rulesets for linting and validating these APIs.

RubyGems API Rules

3 rules · 1 errors 2 warnings

SPECTRAL

RubyGems API Rules

6 rules · 5 warnings 1 info

SPECTRAL

RubyGems API Rules

16 rules · 2 errors 13 warnings 1 info

SPECTRAL

JSON Schema 1

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

RubyGems Gem

23 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Rubygems Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Rubygems Get Gem Info Example

2 fields

EXAMPLE

Rubygems Search Gems Example

2 fields

EXAMPLE

Security Posture 2

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

Rubygems Authentication

apiKey/http · 2 schemes

SECURITY

Rubygems Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Rubygems Agentic Access

28 operations · 9 acting

28 operations · 9 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

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

StatusPage
StatusPage

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: rubygems
name: RubyGems
description: RubyGems.org is the Ruby community's primary gem hosting service, providing the infrastructure for publishing,
  discovering, and installing Ruby gems. The RubyGems API enables programmatic access to gem metadata, version information,
  download statistics, search, owner management, webhooks, and the compact index used by Bundler for dependency resolution.
  RubyGems.org hosts over 160,000 gems with billions of total downloads.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  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
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/rubygems.png
tags:
- Ruby
- Package Manager
- Open-Source
- Developer Tools
tags_raw:
- Ruby
- Package Manager
- Open Source
- Developer Tools
created: '2025-01-01'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/rubygems/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: rubygems:gems-api
  name: RubyGems Gems API
  description: The RubyGems Gems API (v1) provides endpoints for retrieving gem metadata, listing owned gems, submitting new
    gems, yanking gem versions, managing gem ownership, retrieving user profiles, querying gem dependencies, and exchanging
    OIDC tokens for API keys for trusted publishing workflows.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Ruby
  - Gems
  - Package Manager
  properties:
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api/
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/rubygems/refs/heads/main/openapi/rubygems-gems-api-openapi.yml
- aid: rubygems:downloads-api
  name: RubyGems Downloads API
  description: The RubyGems Downloads API provides download count statistics for gems and individual gem versions hosted on
    RubyGems.org.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Ruby
  - Downloads
  - Statistics
  properties:
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api/
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/rubygems/refs/heads/main/openapi/rubygems-downloads-api-openapi.yml
- aid: rubygems:search-api
  name: RubyGems Search API
  description: The RubyGems Search API allows developers to search for gems by matching a query string against gem names and
    descriptions. Returns paginated results of active gems.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Ruby
  - Search
  - Discovery
  properties:
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api/
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/rubygems/refs/heads/main/openapi/rubygems-search-api-openapi.yml
- aid: rubygems:activity-api
  name: RubyGems Activity API
  description: The RubyGems Activity API provides activity feeds of the most recently added and most recently updated gems
    on RubyGems.org, useful for monitoring new releases and tracking ecosystem changes.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Ruby
  - Activity
  - Monitoring
  properties:
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api/
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/rubygems/refs/heads/main/openapi/rubygems-activity-api-openapi.yml
- aid: rubygems:webhooks-api
  name: RubyGems Webhooks API
  description: The RubyGems Webhooks API enables webhook subscriptions that fire when gems are pushed to RubyGems.org. Webhooks
    can be scoped to a specific gem or applied globally using a wildcard. Includes test-fire functionality and HMAC signature
    verification.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Ruby
  - Webhook
  - Event
  tags_raw:
  - Ruby
  - Webhooks
  - Events
  properties:
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api/
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/rubygems/refs/heads/main/openapi/rubygems-webhooks-api-openapi.yml
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/rubygems/refs/heads/main/asyncapi/rubygems-webhooks-asyncapi.yml
- aid: rubygems:rubygems-dependencies-api
  name: RubyGems Dependencies API
  description: Endpoints for querying gem dependency information.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Dependencies
  properties:
  - type: OpenAPI
    url: openapi/rubygems-dependencies-api-openapi.yml
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api-v2/
- aid: rubygems:rubygems-owners-api
  name: RubyGems Owners API
  description: Endpoints for managing gem ownership, including listing owners, adding and removing owners, and listing gems
    by owner.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Owners
  properties:
  - type: OpenAPI
    url: openapi/rubygems-owners-api-openapi.yml
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api-v2/
- aid: rubygems:rubygems-profiles-api
  name: RubyGems Profiles API
  description: Endpoints for retrieving user profile information from RubyGems.org.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Profiles
  properties:
  - type: OpenAPI
    url: openapi/rubygems-profiles-api-openapi.yml
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api-v2/
- aid: rubygems:rubygems-versions-api
  name: RubyGems Versions API
  description: Endpoints for querying detailed version information for specific gem versions, including metadata, dependencies,
    checksums, and platform-specific builds.
  humanURL: https://guides.rubygems.org/rubygems-org-api/
  baseURL: https://rubygems.org/api/v1
  tags:
  - Versions
  properties:
  - type: OpenAPI
    url: openapi/rubygems-versions-api-openapi.yml
  - type: Documentation
    url: https://guides.rubygems.org/rubygems-org-api-v2/
common:
- type: Website
  url: https://www.rubygems.org/
- type: AgenticAccess
  url: agentic-access/rubygems-agentic-access.yml
- type: DomainSecurity
  url: security/rubygems-domain-security.yml
- type: Authentication
  url: authentication/rubygems-authentication.yml
- type: Portal
  url: https://rubygems.org/
- type: Documentation
  url: https://guides.rubygems.org/
- type: Authentication
  url: https://guides.rubygems.org/api-key-scopes/
- type: GitHub
  url: https://github.com/rubygems/rubygems.org
- type: StatusPage
  url: https://status.rubygems.org/
- type: Blog
  url: https://blog.rubygems.org/
- type: LlmsText
  url: https://blog.rubygems.org/llms.txt
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/rubygems"
All providers 
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose 
curl "https://apis.io/api/v1/providers/rubygems/operations?limit=25"
How their score was established 
curl "https://apis.io/api/v1/providers/rubygems/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.