Unity Catalog

Unity Catalog provides an industry‑first universal catalog for data and AI, enabling organizations to manage, discover, and govern data assets across multiple formats, engines, and environments. The platform offers multimodal interfaces, extensive integrations with tools like Spark, DuckDB, and LangChain, and supports AI workloads through dedicated APIs. It includes features for tables, functions, models, and user privileges, along with robust security and governance capabilities.

Unity Catalog publishes 13 API contracts indexed on the APIs.io network, including Catalogs API, Credentials API, Delta Commits API, and 10 more. Tagged areas include Data, Artificial Intelligence, Catalog, Governance, and Multi-Modal.

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

Unity Catalog’s developer surface includes authentication, getting-started guide, documentation, API reference, engineering blog, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.6/100 thin ▬ flat Agent 22/100 agent aware Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessSelf serve

1 published contract

Data Artificial Intelligence Catalog Governance Multi-Modal

Kin Score

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

Composite quality — 27.6/100 · thin

Contract Quality 10.2 / 19

Developer Ergonomics 4.1 / 15

Access Clarity 0.0 / 15

Operational Transparency 0.3 / 10

Contract Governance 2.0 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.3 / 15

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 0 / 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 0 / 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 AI & Biometrics 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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
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)

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 0.0 — up to +20.0 composite points
Developer Ergonomics scores 27.4 — up to +14.5 composite points
Operational Transparency scores 2.6 — up to +12.7 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/unity-catalog/apis.yml: open an issue on github.com/api-evangelist/unity-catalog 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 13

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

Unity Catalog Catalogs API

A catalog is the first layer of Unity Catalog’s three-level namespace. It’s used to organize your data assets.

Unity Catalog Credentials API

The Credentials API from Unity Catalog — 2 operation(s) for credentials.

Unity Catalog Delta Commits API

"Delta commits" is a Delta tables feature that allows Delta tables to designate a coordinator to coordinate commits. This is Unity Catalog's API to allow Unity Catalog be the co...

Unity Catalog External Locations API

The External Locations API from Unity Catalog — 2 operation(s) for external locations.

Unity Catalog Functions API

Functions implement User-Defined Functions (UDFs) in Unity Catalog. The function implementation can be a SQL expression/query or a python function, and it can be invoked whereve...

Unity Catalog Grants API

The Grants API from Unity Catalog — 1 operation(s) for grants.

Unity Catalog Metastores API

A metastore is the top-level container of objects in Unity Catalog that stores all UC assets.

Unity Catalog Schemas API

A schema (also called a database) is the second layer of Unity Catalog’s three-level namespace. A schema organizes tables, volumes and functions.

Unity Catalog Tables API

A table resides in the third layer of Unity Catalog’s three-level namespace. It contains rows of data. A table can be managed or external.

Unity Catalog Temporary Credentials API

Temporary credentials are used to access storage locations or assets for a limited lifetime.

Unity Catalog Volumes API

Volumes are a Unity Catalog capability for accessing, storing, governing, organizing and processing files. Use cases include running machine learning on unstructured data such a...

Unity Catalog Model Versions API

Model versions contain all artifact files associated with an individual machine learning model. They are associated with a single parent model and have an integer identifier, in...

Unity Catalog Registered Models API

Registered models are machine learning models that are stored within the Unity Catalog model registry. They are comprised of all versions of a single model that a user wishes to...

Scroll for all 13

Semantic Vocabularies 1

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

Unity Catalog Context

84 classes · 118 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Unity Catalog API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Unity Catalog Openapi Overlay

0 actions · update

DERIVED

JSON Schema 6

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

DeltaCommit

6 properties

JSON SCHEMA

FunctionInfo

26 properties

JSON SCHEMA

ModelVersionInfo

14 properties

JSON SCHEMA

RegisteredModelInfo

12 properties

JSON SCHEMA

SchemaInfo

13 properties

JSON SCHEMA

TableInfo

17 properties

JSON SCHEMA

Security Posture 2

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

Unity Catalog Authentication

1 scheme

SECURITY

Unity Catalog Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

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

Unity Catalog Agentic Access

54 operations · 33 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

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

SlackCommunity

SlackCommunity

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: unity-catalog
name: Unity Catalog
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Self-serve signup
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://unitycatalog.netlify.app/images/default-image.jpg
description: Unity Catalog provides an industry‑first universal catalog for data and AI, enabling organizations to manage,
  discover, and govern data assets across multiple formats, engines, and environments. The platform offers multimodal interfaces,
  extensive integrations with tools like Spark, DuckDB, and LangChain, and supports AI workloads through dedicated APIs. It
  includes features for tables, functions, models, and user privileges, along with robust security and governance capabilities.
url: https://raw.githubusercontent.com/api-evangelist/unity-catalog/refs/heads/main/apis.yml
x-type: company
x-source: harvest:tag-qc
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-13 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-13'
modified: '2026-10-13'
tags:
- Data
- Artificial Intelligence
- Catalog
- Governance
- Multi-Modal
tags_raw:
- Data
- AI
- Catalog
- Governance
- Multimodal
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/unity-catalog-agentic-access.yml
- type: Spectral
  url: rules/unity-catalog-rules.yml
- type: JSONLD
  url: json-ld/unity-catalog-context.jsonld
- type: Vocabulary
  url: vocabulary/unity-catalog-vocabulary.yml
- type: DataModel
  url: data-model/unity-catalog-data-model.yml
- type: Authentication
  url: authentication/unity-catalog-authentication.yml
- type: ErrorCatalog
  url: errors/unity-catalog-problem-types.yml
- type: Conformance
  url: conformance/unity-catalog-conformance.yml
- type: Hosts
  url: hosts/unity-catalog-hosts.yml
- type: Vendors
  url: vendors/unity-catalog-vendors.yml
- type: GettingStarted
  url: https://docs.unitycatalog.io/quickstart/
- type: DomainSecurity
  url: security/unity-catalog-domain-security.yml
- type: Website
  url: https://www.unitycatalog.io
- type: Documentation
  url: https://docs.unitycatalog.io
- type: APIReference
  url: https://go.unitycatalog.io/apidocs
- type: Blog
  url: https://unitycatalog.io/blogs
- type: GitHubOrganization
  url: https://github.com/unitycatalog
- type: SlackCommunity
  url: https://join.slack.com/t/unitycatalog/shared_invite/zt-3f93k8flt-Ent43H6MQQYNN52Ca_eRMQ
- type: LinkedIn
  url: https://www.linkedin.com/company/unitycatalog
apis:
- aid: unity-catalog:unity-catalog-catalogs-api
  name: Unity Catalog Catalogs API
  description: A catalog is the first layer of Unity Catalog’s three-level namespace. It’s used to organize your data assets.
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Catalog
  tags_raw:
  - Catalogs
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-catalogs-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-credentials-api
  name: Unity Catalog Credentials API
  description: The Credentials API from Unity Catalog — 2 operation(s) for credentials.
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Credentials
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-credentials-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-deltacommits-api
  name: Unity Catalog Delta Commits API
  description: '"Delta commits" is a Delta tables feature that allows Delta tables to designate a coordinator to coordinate
    commits. This is Unity Catalog''s API to allow Unity Catalog be the commit coordinator for managed tables. (See https://github.com/delta-io/delta/blob/master/protocol_rfcs/catalog-managed.md
    for more details)'
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - DeltaCommits
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-deltacommits-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-external-locations-api
  name: Unity Catalog External Locations API
  description: The External Locations API from Unity Catalog — 2 operation(s) for external locations.
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - External Locations
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-external-locations-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-functions-api
  name: Unity Catalog Functions API
  description: 'Functions implement User-Defined Functions (UDFs) in Unity Catalog.

    The function implementation can be a SQL expression/query or a python function, and it can be invoked wherever a table
    reference is allowed in a query.

    In Unity Catalog, a function resides at the same level as a table, so it can be referenced with the form __catalog_name__.__schema_name__.__function_name__.'
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Functions
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-functions-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-grants-api
  name: Unity Catalog Grants API
  description: The Grants API from Unity Catalog — 1 operation(s) for grants.
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Grants
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-grants-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-metastores-api
  name: Unity Catalog Metastores API
  description: A metastore is the top-level container of objects in Unity Catalog that stores all UC assets.
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Metastores
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-metastores-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-schemas-api
  name: Unity Catalog Schemas API
  description: A schema (also called a database) is the second layer of Unity Catalog’s three-level namespace. A schema organizes
    tables, volumes and functions.
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Schema
  tags_raw:
  - Schemas
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-schemas-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-tables-api
  name: Unity Catalog Tables API
  description: "A table resides in the third layer of Unity Catalog’s three-level namespace. It contains rows of data. \n\
    A table can be managed or external."
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Tables
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-tables-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-temporarycredentials-api
  name: Unity Catalog Temporary Credentials API
  description: Temporary credentials are used to access storage locations or assets for a limited lifetime.
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - TemporaryCredentials
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-temporarycredentials-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-volumes-api
  name: Unity Catalog Volumes API
  description: Volumes are a Unity Catalog capability for accessing, storing, governing, organizing and processing files.
    Use cases include running machine learning on unstructured data such as image, audio, video, or PDF files, organizing
    data sets during the data exploration stages in data science, working with libraries that require access to the local
    file system on cluster machines, storing library and config files of arbitrary formats such as .whl or .txt centrally
    and providing secure access across workspaces to it, or transforming and querying non-tabular data files in ETL.
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Volumes
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-volumes-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-model-versions-api
  name: Unity Catalog Model Versions API
  description: 'Model versions contain all artifact files associated with an individual machine learning model. They are associated
    with a single parent model and have an integer identifier, indicating the version number of the model.

    Model versions are referenced via model URI''s using the Unity Catalog three-level namespace of the registered model and
    the version identifier.'
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Model Versions
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-model-versions-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
- aid: unity-catalog:unity-catalog-registered-models-api
  name: Unity Catalog Registered Models API
  description: 'Registered models are machine learning models that are stored within the Unity Catalog model registry. They
    are comprised of all versions of a single model that a user wishes to keep.

    A registered model resides in the third layer of Unity Catalog’s three-level namespace, and can be referenced with the
    form __catalog_name__.__schema_name__.__model_name__.'
  humanURL: https://go.unitycatalog.io/apidocs
  baseURL: https://api.unitycatalog.io
  tags:
  - Registered Models
  properties:
  - type: OpenAPI
    url: openapi/unity-catalog-registered-models-api-openapi.yml
  - type: JSONSchema
    url: json-schema/unity-catalog-function-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-table-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-delta-commit-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-model-version-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-schema-info-schema.json
  - type: JSONSchema
    url: json-schema/unity-catalog-registered-model-info-schema.json
x-enrichment:
  date: '2026-10-13'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Unity Catalog API — frequently asked questions

Does Unity Catalog have an API?

Yes. APIs.io lists 13 APIs from Unity Catalog, including Unity Catalog Catalogs API, Unity Catalog Credentials API and Unity Catalog Delta Commits API, and 10 more.

Is there an OpenAPI specification for the Unity Catalog API?

Yes. APIs.io indexes 13 OpenAPI specifications for Unity Catalog, each linked for download from this page.

How do I authenticate with the Unity Catalog API?

Unity Catalog uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Unity Catalog Authentication.

Is the Unity Catalog API ready for AI agents?

Unity Catalog has a Kin Score of 27.6 out of 100 (thin) and an Agent Readiness score of 22.2 (agent-aware), 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 →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/unity-catalog"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/unity-catalog/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/unity-catalog/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

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A second provider on the same verified email joins the account you already have.