ORAS

ORAS (OCI Registry As Storage) is a CNCF project that provides a CLI and a set of client libraries for pushing and pulling arbitrary OCI artifacts to and from OCI-compliant registries, allowing container registries to be used as a generic artifact distribution mechanism.

ORAS is listed with 2 APIs on the APIs.io network. Tagged areas include Artifact Storage, Cloud-Native, Container Registry, and OCI.

ORAS’s developer surface includes documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

9.3/100 minimal ▬ flat Agent 4/100 human only 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 →

AccessFreemium

2 APIs 1 MCP Servers

Artifact StorageCloud-Native Container Registry OCI

Kin Score

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

Composite quality — 9.3/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 2.4 / 17

Access Clarity 1.3 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 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

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.

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 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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
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
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

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 0.0 — up to +25.0 composite points
Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 14.3 — up to +17.1 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/oras/apis.yml: open an issue on github.com/api-evangelist/oras 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
Container Registries (OCI Distribution)	standard	50.5	-	-
OpenSSF Best Practices Badge Holders	standard	50.5	-	-

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 2

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

ORAS CLI

Generic command-line registry client used to push and pull OCI artifacts to and from any OCI-compliant container registry.

ORAS Client Libraries

Client libraries for building custom OCI artifact tools and integrations on top of ORAS, available across multiple language ecosystems including Go, Rust, Python, JavaScript, .N...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

MCP Server

MCP SERVER

ORAS API pricing

Not yet checked against ORAS'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 ORAS's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Oras Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Oras Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Oras Finops

FINOPS

Security Posture 1

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

Oras Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Community

Community

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

CNCF

CNCF

Source (apis.yml)

aid: oras
name: ORAS
description: ORAS (OCI Registry As Storage) is a CNCF project that provides a CLI and a set of client libraries for pushing
  and pulling arbitrary OCI artifacts to and from OCI-compliant registries, allowing container registries to be used as a
  generic artifact distribution mechanism.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  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
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/oras.png
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
tags:
- Artifact Storage
- Cloud-Native
- Container Registry
- OCI
tags_raw:
- Artifact Storage
- Cloud Native
- Container Registry
- OCI
url: https://raw.githubusercontent.com/api-evangelist/oras/refs/heads/main/apis.yml
created: '2026-03-16'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: oras:cli
  name: ORAS CLI
  description: Generic command-line registry client used to push and pull OCI artifacts to and from any OCI-compliant container
    registry.
  humanURL: https://oras.land/docs/
  tags:
  - CLI
  - OCI
  - Artifacts
  properties:
  - type: Documentation
    url: https://oras.land/docs/
  - type: Installation
    url: https://oras.land/docs/installation
  - type: Commands
    url: https://oras.land/docs/commands/oras
  - type: Source Code
    url: https://github.com/oras-project/oras
- aid: oras:client-libraries
  name: ORAS Client Libraries
  description: Client libraries for building custom OCI artifact tools and integrations on top of ORAS, available across multiple
    language ecosystems including Go, Rust, Python, JavaScript, .NET, and Java.
  humanURL: https://oras.land/docs/client_libraries/overview
  tags:
  - SDK
  - Library
  - OCI
  tags_raw:
  - SDK
  - Libraries
  - OCI
  properties:
  - type: Documentation
    url: https://oras.land/docs/client_libraries/overview
  - type: Go
    url: https://github.com/oras-project/oras-go
  - type: Rust
    url: https://github.com/oras-project/rust-oci-client
  - type: Python
    url: https://github.com/oras-project/oras-py
  - type: JavaScript
    url: https://github.com/oras-project/oras-js
common:
- type: Plans
  url: plans/oras-plans-pricing.yml
- type: RateLimits
  url: rate-limits/oras-rate-limits.yml
- type: FinOps
  url: finops/oras-finops.yml
- type: DomainSecurity
  url: security/oras-domain-security.yml
- type: Website
  url: https://oras.land/
- type: Documentation
  url: https://oras.land/docs/
- type: GitHubOrganization
  url: https://github.com/oras-project
- type: Community
  url: https://oras.land/community/
- type: CNCF
  url: https://www.cncf.io/projects/oras/
- name: MCP Server
  url: https://github.com/oras-project/oras-mcp
  type: MCPServer
- url: https://oras.land/blog/atom.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

ORAS API — frequently asked questions

Does ORAS have an API?

Yes. APIs.io lists 2 APIs from ORAS, including ORAS CLI and ORAS Client Libraries.

How much does the ORAS API cost?

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

Does ORAS have an MCP server?

Yes. APIs.io lists 1 MCP server for ORAS.

Is the ORAS API ready for AI agents?

ORAS has a Kin Score of 9.3 out of 100 (minimal) and an Agent Readiness score of 3.7 (human-only), scored by API Evangelist on 2026-11-06.

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 →

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