Dagster

Dagster is a data orchestration platform centered on software-defined assets with strong observability and testing support. It exposes a GraphQL API for programmatic interaction with Dagster instances and a REST API for reporting external asset materializations, checks, and observations from outside pipelines.

Dagster publishes 3 APIs on the APIs.io network: Checks API, Materializations API, and Observations API. Tagged areas include Data Engineering, Data Orchestration, Data Pipeline, ETL, and Workflows.

The Dagster catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Dagster’s developer surface includes authentication, developer portal, signup flow, documentation, API reference, getting-started guide, engineering blog, and 29 more developer resources.

🌐 Visit website 📡 Source on GitHub

60.6/100 strong ▬ flat Agent 20/100 agent aware open core · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Data Engineering Data Orchestration Data Pipeline ETL Workflows Assets GraphQL

Kin Score

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

Composite quality — 60.6/100 · strong

Contract Quality 12.7 / 20

Developer Ergonomics 10.5 / 16

Access Clarity 9.7 / 16

Operational Transparency 3.8 / 10

Contract Governance 6.7 / 10

Discoverability 5.3 / 8

Open Source Surface 6.5 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · 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 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/dagster: 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 4

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

Dagster GraphQL API

The Dagster GraphQL API allows clients to interact with Dagster programmatically. It can be used to query information about Dagster runs, retrieve metadata about repositories, j...

Dagster Checks API

Report asset check evaluations.

Dagster Materializations API

Report asset materialization events.

Dagster Observations API

Report asset observation events.

Postman Collections 1

Ready-to-run Postman collections for exercising this provider's APIs.

Dagster External Assets REST API

POSTMAN

Open Collections 5

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

API Collection

OPEN COLLECTION

Dagster External Assets REST Checks API

OPEN COLLECTION

Dagster External Assets REST API

OPEN COLLECTION

Dagster External Assets REST Checks Materializations API

OPEN COLLECTION

Dagster External Assets REST Checks Observations API

OPEN COLLECTION

Arazzo Workflows 3

Multi-step API workflows described with the Arazzo specification.

Dagster External Asset Event Pipeline

Observe, materialize, and check an external asset in a single correlated event pipeline.

ARAZZO

Dagster Materialize and Check External Asset

Report an external asset materialization, then record an asset check evaluation against the same asset.

ARAZZO

Dagster Observe and Materialize External Asset

Report an observation for an external asset, then report its materialization.

ARAZZO

GraphQL 1

GraphQL schemas published by this provider.

Dagster GraphQL API

The Dagster GraphQL API allows clients to interact with Dagster programmatically. It can be used to query information about Dagster runs, retrieve metadata about repositories, j...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Dagster Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Dagster Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Dagster Finops

FINOPS

Semantic Vocabularies 1

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

Dagster Context

3 classes · 8 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Dagster API Rules

5 rules · 2 errors 3 warnings

SPECTRAL

Dagster API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 3

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

AssetCheck

5 properties

JSON SCHEMA

AssetMaterialization

5 properties

JSON SCHEMA

AssetObservation

5 properties

JSON SCHEMA

Security Posture 2

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

Dagster Authentication

apiKey · 1 scheme

SECURITY

Dagster Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Dagster Agentic Access

3 operations · 3 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Portal

Portal

Signup

Signup

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Arazzo

Arazzo

Arazzo

JSONLD

Vocabulary

Build 5

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Python SDK

Python SDK

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Security

Security

Operate 7

Status, limits, changes, and where to get help

IssueTracker

Releases

ChangeLog

Support

Community

Slack

Contact

Scroll for all 7

Commercial 4

Pricing, plans, and the legal terms of use

License

Pricing

PrivacyPolicy

TermsOfService

Company 4

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

About

About

Source (apis.yml)

aid: dagster
name: Dagster
segments:
- Workflows
description: Dagster is a data orchestration platform centered on software-defined assets with strong observability and testing
  support. It exposes a GraphQL API for programmatic interaction with Dagster instances and a REST API for reporting external
  asset materializations, checks, and observations from outside pipelines.
type: Index
deliveryModel:
  model: open-core
  license: Apache-2.0
  open_source: true
  commercial: true
  callable_host: true
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/dagster.png
tags:
- Data Engineering
- Data Orchestration
- Data Pipeline
- ETL
- Workflows
- Assets
- GraphQL
tags_raw:
- Data Engineering
- Data Orchestration
- Data Pipelines
- ETL
- Workflows
- Assets
- GraphQL
created: '2026-03-03'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/dagster/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: dagster:graphql-api
  name: Dagster GraphQL API
  description: The Dagster GraphQL API allows clients to interact with Dagster programmatically. It can be used to query information
    about Dagster runs, retrieve metadata about repositories, jobs, and ops, and launch runs. The GraphQL endpoint is served
    by the webserver at the /graphql route.
  humanURL: https://docs.dagster.io/api/graphql
  tags:
  - Data Orchestration
  - GraphQL
  - Job
  - Runs
  - Workflows
  tags_raw:
  - Data Orchestration
  - GraphQL
  - Jobs
  - Runs
  - Workflows
  properties:
  - type: Documentation
    url: https://docs.dagster.io/api/graphql
  - type: GraphQL Playground
    url: https://docs.dagster.io/api/graphql
  - url: graphql/dagster-graphql.md
    type: GraphQL
- aid: dagster:dagster-checks-api
  name: Dagster Checks API
  description: Report asset check evaluations.
  humanURL: https://docs.dagster.io/api/graphql
  tags:
  - Checks
  properties:
  - type: OpenAPI
    url: openapi/dagster-checks-api-openapi.yml
  - type: Documentation
    url: https://docs.dagster.io/api/rest-apis/external-assets-rest-api
  - type: JSONSchema
    url: json-schema/asset-materialization.json
  - type: JSONSchema
    url: json-schema/asset-check.json
  - type: JSONSchema
    url: json-schema/asset-observation.json
  - type: Rules
    url: rules/dagster-external-assets-rest-api-rules.yml
- aid: dagster:dagster-materializations-api
  name: Dagster Materializations API
  description: Report asset materialization events.
  humanURL: https://docs.dagster.io/api/graphql
  tags:
  - Materializations
  properties:
  - type: OpenAPI
    url: openapi/dagster-materializations-api-openapi.yml
  - type: Documentation
    url: https://docs.dagster.io/api/rest-apis/external-assets-rest-api
  - type: JSONSchema
    url: json-schema/asset-materialization.json
  - type: JSONSchema
    url: json-schema/asset-check.json
  - type: JSONSchema
    url: json-schema/asset-observation.json
  - type: Rules
    url: rules/dagster-external-assets-rest-api-rules.yml
- aid: dagster:dagster-observations-api
  name: Dagster Observations API
  description: Report asset observation events.
  humanURL: https://docs.dagster.io/api/graphql
  tags:
  - Observations
  properties:
  - type: OpenAPI
    url: openapi/dagster-observations-api-openapi.yml
  - type: Documentation
    url: https://docs.dagster.io/api/rest-apis/external-assets-rest-api
  - type: JSONSchema
    url: json-schema/asset-materialization.json
  - type: JSONSchema
    url: json-schema/asset-check.json
  - type: JSONSchema
    url: json-schema/asset-observation.json
  - type: Rules
    url: rules/dagster-external-assets-rest-api-rules.yml
common:
- type: Website
  url: https://www.dagster.io/
- type: IssueTracker
  url: https://github.com/dagster-io/dagster/issues
- type: Releases
  url: https://github.com/dagster-io/dagster/releases
- type: CodeOfConduct
  url: https://github.com/dagster-io/dagster/blob/master/.github/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/dagster-io/dagster/blob/master/.github/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/dagster-io/dagster/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/dagster-agentic-access.yml
- type: DomainSecurity
  url: security/dagster-domain-security.yml
- type: Authentication
  url: authentication/dagster-authentication.yml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/dagster/overview
- type: Arazzo
  url: arazzo/dagster-external-asset-event-pipeline-workflow.yml
  name: Dagster External Asset Event Pipeline
- type: Arazzo
  url: arazzo/dagster-materialize-and-check-asset-workflow.yml
  name: Dagster Materialize and Check External Asset
- type: Arazzo
  url: arazzo/dagster-observe-then-materialize-asset-workflow.yml
  name: Dagster Observe and Materialize External Asset
- type: LinkedIn
  url: https://www.linkedin.com/company/dagsterlabs
- type: Portal
  url: https://dagster.cloud/
- type: Signup
  url: https://dagster.cloud/signup
- type: Documentation
  url: https://docs.dagster.io/
- type: APIReference
  url: https://docs.dagster.io/api
- type: GettingStarted
  url: https://docs.dagster.io/getting-started/quickstart
- type: Blog
  url: https://dagster.io/blog
- type: ChangeLog
  url: https://docs.dagster.io/about/changelog
- type: Pricing
  url: https://dagster.io/pricing
- type: Support
  url: https://dagster.io/support
- type: Community
  url: https://dagster.io/community
- type: Slack
  url: https://dagster.io/slack
- type: GitHubOrganization
  url: https://github.com/dagster-io
- type: GitHubRepository
  url: https://github.com/dagster-io/dagster
- type: Integrations
  url: https://docs.dagster.io/integrations/libraries
- type: Python SDK
  url: https://pypi.org/project/dagster/
- type: PrivacyPolicy
  url: https://dagster.io/privacy
- type: TermsOfService
  url: https://dagster.io/terms
- type: Security
  url: https://dagster.io/security
- type: About
  url: https://dagster.io/company/about-us
- type: Contact
  url: https://dagster.io/contact
- type: JSONLD
  url: json-ld/dagster-context.jsonld
- type: Vocabulary
  url: vocabulary/dagster-vocabulary.yml
- type: LlmsText
  url: https://docs.dagster.io/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
kind: opensource

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