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 4 API contracts indexed on the APIs.io network, including Checks API, Materializations API, Observations API, and 1 more. 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 32 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

60.1/100 strong ▬ flat Agent 18/100 agent aware Front door AI 5/6 prominent Heartbeat 56/100 slowing open core · Apache-2.0 Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract

Data Engineering Data Orchestration Data Pipeline ETL Workflows Assets GraphQL

Kin Score

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

Composite quality — 60.1/100 · strong

Contract Quality 9.3 / 16

Developer Ergonomics 8.5 / 13

Access Clarity 10.9 / 13

Operational Transparency 3.1 / 8

Contract Governance 2.1 / 8

Discoverability 4.2 / 7

Regulatory Posture 3.7 / 15

Open Source Surface 6.5 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 18/100 · 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

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

9 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 57.3 — up to +10.7 composite points
Contract Governance scores 27.3 — up to +8.7 composite points
Operational Transparency scores 36.8 — up to +8.2 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/dagster/apis.yml: open an issue on github.com/api-evangelist/dagster 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Data Integration (ELT connectors and data governance)	builds-on	45.4	-	-
Artifact Hub Cloud-Native Packages	builds-on	45.4	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

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.

GraphQL

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

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 4

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

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

Dagster API pricing

Prices published by Dagster, read 2026-10-28 from dagster.io/pricing.

Plan	Price
Solo Plan	$10 per month Includes: 1 User, 1 Code location, 1 Deployment, 30-day free trial
Starter Plan	$100 per month Includes: Up to 3 Users, 5 Code locations, 1 Deployment, Catalog Search, 30-day free trial
Pro Plan	Contact Sales Includes: Custom Serverless compute, unlimited code locations and deployments, Cost Tracking and Insights, onb

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 Dagster's documentation. All 5 limits →

Billed by: subscription · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Dagster Plans Pricing

3 plans

PLANS

Dagster Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Dagster 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.

Dagster

SLA

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 — external assets rest api rules

5 rules · 2 errors 3 warnings

SPECTRAL

Dagster — jsonschema 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 8

Status, limits, changes, and where to get help

RateLimits

IssueTracker

Releases

ChangeLog

Support

Community

Slack

Contact

Scroll for all 8

Commercial 6

Pricing, plans, and the legal terms of use

Plans

FinOps

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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/dagster.png
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-25
x-docs-hosting: vercel
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: Plans
  url: plans/dagster-plans-pricing.yml
- type: RateLimits
  url: rate-limits/dagster-rate-limits.yml
- type: FinOps
  url: finops/dagster-finops.yml
- 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

Dagster API — frequently asked questions

Does Dagster have an API?

Yes. APIs.io lists 4 APIs from Dagster, including Dagster GraphQL API, Dagster Checks API and Dagster Materializations API, and 1 more.

Is there an OpenAPI specification for the Dagster API?

Yes. APIs.io indexes 3 OpenAPI specifications for Dagster, each linked for download from this page.

How do I authenticate with the Dagster API?

Dagster uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Dagster Authentication.

How much does the Dagster API cost?

Dagster publishes its prices; its Solo Plan plan is $10 per month as of 2026-10-28. APIs.io lists 3 pricing plans for Dagster, with each plan's price, limits and inclusions under Pricing on this page.

Is the Dagster API ready for AI agents?

Dagster has a Kin Score of 60.1 out of 100 (strong) and an Agent Readiness score of 17.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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