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 API contracts indexed 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 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

38.5/100 thin ▬ flat Agent 21/100 agent aware Front door AI 1/6 silent Heartbeat 84/100 alive self hosted · BSD-3-Clause Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve

1 published contract

Compute Interactive Computing Kernel NotebooksPortableWorkbooks

Kin Score

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

Composite quality — 38.5/100 · thin

Contract Quality 9.6 / 16

Developer Ergonomics 5.3 / 13

Access Clarity 1.0 / 13

Operational Transparency 3.1 / 8

Contract Governance 0.8 / 8

Discoverability 3.7 / 7

Regulatory Posture 2.5 / 15

Open Source Surface 6.5 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · 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

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.

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 65 points between them, because both conditional facets apply and carry 35 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 65% 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)
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
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 40.5 — up to +11.9 composite points
Contract Governance scores 9.8 — up to +10.8 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/jupyter-server/apis.yml: open an issue on github.com/api-evangelist/jupyter-server 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 →

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 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 9

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

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 9

Jupyter Server API pricing

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

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

Service Levels 1

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

Jupyter Server

SLA

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 — jsonschema 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 4

Status, limits, changes, and where to get help

RateLimits

IssueTracker

Releases

Community

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  try_now_blocked_by: loopback
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/jupyter-server.png
x-docs-platform: sphinx
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
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:
  - Terminal
  tags_raw:
  - 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: Plans
  url: plans/jupyter-server-plans-pricing.yml
- type: RateLimits
  url: rate-limits/jupyter-server-rate-limits.yml
- type: FinOps
  url: finops/jupyter-server-finops.yml
- 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

Jupyter Server API — frequently asked questions

Does Jupyter Server have an API?

Yes. APIs.io lists 8 APIs from Jupyter Server, including Jupyter Server Checkpoints API, Jupyter Server Config API and Jupyter Server Contents API, and 5 more.

Is there an OpenAPI specification for the Jupyter Server API?

Yes. APIs.io indexes 8 OpenAPI specifications for Jupyter Server, each linked for download from this page.

How do I authenticate with the Jupyter Server API?

Jupyter Server uses bearer-token authentication (apiKey · 2 schemes). The details are profiled on APIs.io as Jupyter Server Authentication.

How much does the Jupyter Server API cost?

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

Is the Jupyter Server API ready for AI agents?

Jupyter Server has a Kin Score of 38.5 out of 100 (thin) and an Agent Readiness score of 21.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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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.

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