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 API contracts indexed 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 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

33.8/100 thin ▬ flat Agent 32/100 agent ready Front door AI 1/6 silent Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreeSelf serve⚡ Free to try

1 published contract

Ruby Package Manager Open Source Developer Tools

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

POST /web_hooks DELETE /web_hooks/remove POST /web_hooks/fire

Kin Score

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

Composite quality — 33.8/100 · thin

Contract Quality 11.0 / 19

Developer Ergonomics 5.0 / 15

Access Clarity 0.8 / 15

Operational Transparency 2.8 / 10

Contract Governance 1.2 / 9

Discoverability 4.8 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · 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

Pagination 0 / 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.

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 75 points between them, because the conditional facet above carries the other 25. 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs

6 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 5.3 — up to +18.9 composite points
Developer Ergonomics scores 33.3 — up to +13.3 composite points
Contract Governance scores 13.6 — up to +10.4 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/rubygems/apis.yml: open an issue on github.com/api-evangelist/rubygems 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
GitHub Marketplace (GitHub-native publisher layer)	mixed	44.1	-	-
Raycast Store Extensions (first-party publishers + community-wrapped products)	mixed	44.1	-	-

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.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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 10

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

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 10

RubyGems API pricing

Not yet checked against RubyGems's own pricing page. Compiled by API Evangelist on 2026-05-05 from guides.rubygems.org/rubygems-org-rate-limits/; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Public API freemium	Free

Plan details, limits and sources →

Rate limits

Load balancer (API and website): 10 requests per second
Load balancer (Dependency API / Compact Index): 15 requests per second
Auth and account endpoints: 100 requests per window

Compiled by API Evangelist, not yet checked against RubyGems's documentation. All 6 limits →

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

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

RubyGems

SLA

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 — asyncapi rules

3 rules · 1 errors 2 warnings

SPECTRAL

RubyGems — jsonschema 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

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 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

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
  license_evidence:
    not_product:
    - rubygems/rubygems.org
  open_source: unknown
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Free · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  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
- Open-Source
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: Plans
  url: plans/rubygems-plans-pricing.yml
- type: RateLimits
  url: rate-limits/rubygems-rate-limits.yml
- type: FinOps
  url: finops/rubygems-finops.yml
- type: CapabilityMap
  url: capabilities/rubygems-capability-edges.yml
  name: RubyGems Business Capability Map
- 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

RubyGems API — frequently asked questions

Does RubyGems have an API?

Yes. APIs.io lists 9 APIs from RubyGems, including RubyGems Gems API, RubyGems Downloads API and RubyGems Search API, and 6 more.

Is there an OpenAPI specification for the RubyGems API?

Yes. APIs.io indexes 9 OpenAPI specifications for RubyGems, each linked for download from this page.

How do I authenticate with the RubyGems API?

RubyGems uses bearer-token authentication (apiKey/http · 2 schemes). The details are profiled on APIs.io as Rubygems Authentication.

How much does the RubyGems API cost?

APIs.io lists 1 pricing plan for RubyGems, with each plan's price, limits and inclusions under Pricing on this page.

Is the RubyGems API ready for AI agents?

RubyGems has a Kin Score of 33.8 out of 100 (thin) and an Agent Readiness score of 31.8 (agent-ready), scored by API Evangelist on 2026-11-06.

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