Jellyfin

Jellyfin is a free, open-source media system that lets you collect, manage, and stream your media files. It is community‑built, runs on your own server, and offers no‑strings‑attached streaming to any device, with full control over your library and privacy.

Jellyfin is listed with 1 API on the APIs.io network. Tagged areas include Media, Open-Source, Free-Software, Community, and Streaming.

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

Jellyfin’s developer surface includes changelog, getting-started guide, documentation, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

21.1/100 emerging Agent 16/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

MediaOpen-SourceFree-SoftwareCommunity Streaming Company

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 21.1/100 · emerging

Contract Quality 2.3 / 21

Developer Ergonomics 4.9 / 17

Access Clarity 0.0 / 17

Operational Transparency 3.5 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 18 / 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 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 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 0 / 3

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):

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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

12 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 10.7 — up to +22.3 composite points
Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 28.6 — up to +14.3 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/jellyfin/apis.yml: open an issue on github.com/api-evangelist/jellyfin 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 →

APIs 1

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

Jellyfin API

Jellyfin API as documented publicly: 7 operations. Contract generated from the documentation by API Evangelist (2026-10-28); not the provider's own document.

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Jellyfin API Rules

9 rules · 7 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

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

Jellyfin Domain Security

TLSv1.3 · DNSSEC · DMARC

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

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Vocabulary

Vocabulary

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Security

Security

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Forum

Forum

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: jellyfin
name: Jellyfin
image: https://jellyfin.org/images/social.png?v2
description: Jellyfin is a free, open-source media system that lets you collect, manage, and stream your media files. It is
  community‑built, runs on your own server, and offers no‑strings‑attached streaming to any device, with full control over
  your library and privacy.
url: https://artifacts.apis.io/jellyfin/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-28 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
tags:
- Media
- Open-Source
- Free-Software
- Community
- Streaming
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/jellyfin-rules.yml
- type: Vocabulary
  url: vocabulary/jellyfin-vocabulary.yml
- type: Conformance
  url: conformance/jellyfin-conformance.yml
- type: Hosts
  url: hosts/jellyfin-hosts.yml
- type: Vendors
  url: vendors/jellyfin-vendors.yml
- type: Security
  url: https://jellyfin.org/posts/tags/security
- type: ChangeLog
  url: https://github.com/jellyfin/jellyfin/releases
- type: GettingStarted
  url: https://jellyfin.org/docs/general/quick-start
- type: DomainSecurity
  url: security/jellyfin-domain-security.yml
- type: Website
  url: https://jellyfin.org/
- type: Documentation
  url: https://jellyfin.org/docs/
- type: Blog
  url: https://jellyfin.org/posts/
- type: Forum
  url: https://forum.jellyfin.org/
- type: GitHubOrganization
  url: https://github.com/jellyfin
apis:
- aid: jellyfin:jellyfin-api
  name: Jellyfin API
  description: 'Jellyfin API as documented publicly: 7 operations. Contract generated from the documentation by API Evangelist
    (2026-10-28); not the provider''s own document.'
  humanURL: https://jellyfin.org/docs/general/contributing/development
  baseURL: https://repo.jellyfin.org
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/jellyfin-openapi-generated.yml
    x-provenance: generated
x-submission-probe: 200, 2026-10-26
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation is provided as HTML pages without a machine‑readable OpenAPI, AsyncAPI, GraphQL, gRPC or WSDL spec.
  evidence:
  - url: https://jellyfin.org/docs/
    status: 200
  checked: '2026-10-28'
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 11
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Jellyfin API — frequently asked questions

Does Jellyfin have an API?

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

Is there an OpenAPI specification for the Jellyfin API?

Yes. APIs.io indexes 1 OpenAPI specification for Jellyfin, each linked for download from this page.

Is the Jellyfin API ready for AI agents?

Jellyfin has a Kin Score of 21.1 out of 100 (emerging) and an Agent Readiness score of 15.5 (agent-aware), scored by API Evangelist on 2026-10-31.

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