Jupyter Server

Jupyter Server is the backend that powers Jupyter Notebook, JupyterLab, and other Jupyter web applications. It provides the core REST API for managing kernels, sessions, contents, terminals, and configuration, and it hosts the WebSocket endpoints used to communicate with kernels via the Jupyter messaging protocol.

Jupyter Server publishes 8 APIs on the APIs.io network, including Checkpoints API, Config API, Contents API, and 5 more. Tagged areas include Compute, Interactive Computing, Kernel, Notebooks, and Portable.

The Jupyter Server catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Jupyter Server’s developer surface includes authentication, documentation, getting-started guide, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub

41.2/100 developing ▬ flat Agent 22/100 agent aware self hosted · BSD-3-Clause Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve

1 APIs

Compute Interactive Computing Kernel NotebooksPortableWorkbooks

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 41.2/100 · developing

Contract Quality 12.9 / 20

Developer Ergonomics 6.5 / 16

Access Clarity 2.5 / 16

Operational Transparency 3.8 / 10

Contract Governance 0.9 / 10

Discoverability 4.7 / 8

Open Source Surface 6.5 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

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 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

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 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 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/jupyter-server: 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 8

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

Jupyter Server Checkpoints API

File checkpoint (snapshot) management.

Jupyter Server Config API

Server configuration sections.

Jupyter Server Contents API

Notebook and file management operations.

Jupyter Server General API

Server information, identity, and status.

Jupyter Server Kernels API

Kernel lifecycle management.

Jupyter Server Kernelspecs API

Available kernel specifications.

Jupyter Server Sessions API

Notebook-kernel session management.

Jupyter Server Terminals API

Terminal session management.

Scroll for all 8

Open Collections 10

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

API Collection

OPEN COLLECTION

Jupyter Server REST Checkpoints API

OPEN COLLECTION

Jupyter Server REST Checkpoints Config API

OPEN COLLECTION

Jupyter Server REST Checkpoints Contents API

OPEN COLLECTION

Jupyter Server REST Checkpoints General API

OPEN COLLECTION

Jupyter Server REST Checkpoints Kernels API

OPEN COLLECTION

Jupyter Server REST Checkpoints Kernelspecs API

OPEN COLLECTION

Jupyter Server REST API

OPEN COLLECTION

Jupyter Server REST Checkpoints Sessions API

OPEN COLLECTION

Jupyter Server REST Checkpoints Terminals API

OPEN COLLECTION

Scroll for all 10

Pricing Plans 1

Published pricing tiers and plan structures.

Jupyter Server Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Jupyter Server Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Jupyter Server Finops

FINOPS

Semantic Vocabularies 1

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

Jupyter Server Context

6 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Jupyter Server API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 3

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

Jupyter Server Contents Model

11 properties

JSON SCHEMA

Jupyter Server Kernel

5 properties

JSON SCHEMA

Jupyter Server Session

5 properties

JSON SCHEMA

Security Posture 2

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

Jupyter Server Authentication

apiKey · 2 schemes

SECURITY

Jupyter Server Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

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

Jupyter Server Agentic Access

31 operations · 17 acting · 1 human-in-the-loop

31 operations · 17 acting

AGENTIC

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

AgenticAccess

AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Security

Security

Operate 3

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

Releases

Releases

Community

Community

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Repository

Repository

Source (apis.yml)

aid: jupyter-server
name: Jupyter Server
description: Jupyter Server is the backend that powers Jupyter Notebook, JupyterLab, and other Jupyter web applications. It
  provides the core REST API for managing kernels, sessions, contents, terminals, and configuration, and it hosts the WebSocket
  endpoints used to communicate with kernels via the Jupyter messaging protocol.
type: Index
deliveryModel:
  model: self-hosted
  license: BSD-3-Clause
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  try_now_blocked_by: loopback
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/jupyter-server.png
tags:
- Compute
- Interactive Computing
- Kernel
- Notebooks
- Portable
- Workbooks
tags_raw:
- Compute
- Interactive Computing
- Kernels
- Notebooks
- Portable
- Workbooks
url: https://raw.githubusercontent.com/api-evangelist/jupyter-server/refs/heads/main/apis.yml
created: '2025-02-06'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: jupyter-server:jupyter-server-checkpoints-api
  name: Jupyter Server Checkpoints API
  description: File checkpoint (snapshot) management.
  humanURL: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  baseURL: http://localhost:8888/api
  tags:
  - Checkpoints
  properties:
  - type: OpenAPI
    url: openapi/jupyter-server-checkpoints-api-openapi.yml
  - type: Documentation
    url: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  - type: Repository
    url: https://github.com/jupyter-server/jupyter_server
  - type: ChangeLog
    url: https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
  - type: JSONSchema
    url: json-schema/jupyter-server-contents-model.json
  - type: JSONSchema
    url: json-schema/jupyter-server-kernel.json
  - type: JSONSchema
    url: json-schema/jupyter-server-session.json
  - type: JSONLDContext
    url: json-ld/jupyter-server-context.jsonld
- aid: jupyter-server:jupyter-server-config-api
  name: Jupyter Server Config API
  description: Server configuration sections.
  humanURL: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  baseURL: http://localhost:8888/api
  tags:
  - Config
  properties:
  - type: OpenAPI
    url: openapi/jupyter-server-config-api-openapi.yml
  - type: Documentation
    url: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  - type: Repository
    url: https://github.com/jupyter-server/jupyter_server
  - type: ChangeLog
    url: https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
  - type: JSONSchema
    url: json-schema/jupyter-server-contents-model.json
  - type: JSONSchema
    url: json-schema/jupyter-server-kernel.json
  - type: JSONSchema
    url: json-schema/jupyter-server-session.json
  - type: JSONLDContext
    url: json-ld/jupyter-server-context.jsonld
- aid: jupyter-server:jupyter-server-contents-api
  name: Jupyter Server Contents API
  description: Notebook and file management operations.
  humanURL: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  baseURL: http://localhost:8888/api
  tags:
  - Contents
  properties:
  - type: OpenAPI
    url: openapi/jupyter-server-contents-api-openapi.yml
  - type: Documentation
    url: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  - type: Repository
    url: https://github.com/jupyter-server/jupyter_server
  - type: ChangeLog
    url: https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
  - type: JSONSchema
    url: json-schema/jupyter-server-contents-model.json
  - type: JSONSchema
    url: json-schema/jupyter-server-kernel.json
  - type: JSONSchema
    url: json-schema/jupyter-server-session.json
  - type: JSONLDContext
    url: json-ld/jupyter-server-context.jsonld
- aid: jupyter-server:jupyter-server-general-api
  name: Jupyter Server General API
  description: Server information, identity, and status.
  humanURL: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  baseURL: http://localhost:8888/api
  tags: []
  tags_raw:
  - General
  properties:
  - type: OpenAPI
    url: openapi/jupyter-server-general-api-openapi.yml
  - type: Documentation
    url: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  - type: Repository
    url: https://github.com/jupyter-server/jupyter_server
  - type: ChangeLog
    url: https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
  - type: JSONSchema
    url: json-schema/jupyter-server-contents-model.json
  - type: JSONSchema
    url: json-schema/jupyter-server-kernel.json
  - type: JSONSchema
    url: json-schema/jupyter-server-session.json
  - type: JSONLDContext
    url: json-ld/jupyter-server-context.jsonld
- aid: jupyter-server:jupyter-server-kernels-api
  name: Jupyter Server Kernels API
  description: Kernel lifecycle management.
  humanURL: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  baseURL: http://localhost:8888/api
  tags:
  - Kernel
  tags_raw:
  - Kernels
  properties:
  - type: OpenAPI
    url: openapi/jupyter-server-kernels-api-openapi.yml
  - type: Documentation
    url: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  - type: Repository
    url: https://github.com/jupyter-server/jupyter_server
  - type: ChangeLog
    url: https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
  - type: JSONSchema
    url: json-schema/jupyter-server-contents-model.json
  - type: JSONSchema
    url: json-schema/jupyter-server-kernel.json
  - type: JSONSchema
    url: json-schema/jupyter-server-session.json
  - type: JSONLDContext
    url: json-ld/jupyter-server-context.jsonld
- aid: jupyter-server:jupyter-server-kernelspecs-api
  name: Jupyter Server Kernelspecs API
  description: Available kernel specifications.
  humanURL: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  baseURL: http://localhost:8888/api
  tags:
  - Kernelspecs
  properties:
  - type: OpenAPI
    url: openapi/jupyter-server-kernelspecs-api-openapi.yml
  - type: Documentation
    url: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  - type: Repository
    url: https://github.com/jupyter-server/jupyter_server
  - type: ChangeLog
    url: https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
  - type: JSONSchema
    url: json-schema/jupyter-server-contents-model.json
  - type: JSONSchema
    url: json-schema/jupyter-server-kernel.json
  - type: JSONSchema
    url: json-schema/jupyter-server-session.json
  - type: JSONLDContext
    url: json-ld/jupyter-server-context.jsonld
- aid: jupyter-server:jupyter-server-sessions-api
  name: Jupyter Server Sessions API
  description: Notebook-kernel session management.
  humanURL: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  baseURL: http://localhost:8888/api
  tags:
  - Sessions
  properties:
  - type: OpenAPI
    url: openapi/jupyter-server-sessions-api-openapi.yml
  - type: Documentation
    url: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  - type: Repository
    url: https://github.com/jupyter-server/jupyter_server
  - type: ChangeLog
    url: https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
  - type: JSONSchema
    url: json-schema/jupyter-server-contents-model.json
  - type: JSONSchema
    url: json-schema/jupyter-server-kernel.json
  - type: JSONSchema
    url: json-schema/jupyter-server-session.json
  - type: JSONLDContext
    url: json-ld/jupyter-server-context.jsonld
- aid: jupyter-server:jupyter-server-terminals-api
  name: Jupyter Server Terminals API
  description: Terminal session management.
  humanURL: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  baseURL: http://localhost:8888/api
  tags:
  - Terminals
  properties:
  - type: OpenAPI
    url: openapi/jupyter-server-terminals-api-openapi.yml
  - type: Documentation
    url: https://jupyter-server.readthedocs.io/en/latest/developers/rest-api.html
  - type: Repository
    url: https://github.com/jupyter-server/jupyter_server
  - type: ChangeLog
    url: https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
  - type: JSONSchema
    url: json-schema/jupyter-server-contents-model.json
  - type: JSONSchema
    url: json-schema/jupyter-server-kernel.json
  - type: JSONSchema
    url: json-schema/jupyter-server-session.json
  - type: JSONLDContext
    url: json-ld/jupyter-server-context.jsonld
common:
- type: IssueTracker
  url: https://github.com/jupyter-server/jupyter_server/issues
- type: Releases
  url: https://github.com/jupyter-server/jupyter_server/releases
- type: CodeOfConduct
  url: https://github.com/jupyter-server/.github/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/jupyter-server/jupyter_server/blob/main/CONTRIBUTING.rst
- type: License
  name: BSD-3-Clause
  url: https://github.com/jupyter-server/jupyter_server/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/jupyter-server-agentic-access.yml
- type: DomainSecurity
  url: security/jupyter-server-domain-security.yml
- type: Authentication
  url: authentication/jupyter-server-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/project-jupyter
- type: Website
  url: https://jupyter-server.readthedocs.io/
- type: Documentation
  url: https://jupyter-server.readthedocs.io/en/latest/
- type: GettingStarted
  url: https://jupyter-server.readthedocs.io/en/latest/users/index.html
- type: GitHubOrganization
  url: https://github.com/jupyter-server
- type: Repository
  url: https://github.com/jupyter-server/jupyter_server
- type: Community
  url: https://discourse.jupyter.org/
- type: Security
  url: https://jupyter.org/security
- url: https://blog.jupyter.org/feed
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
  url: https://apievangelist.com

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