Estuary Flow website screenshot

Estuary Flow

Estuary Flow is a real-time data movement and transformation platform combining streaming infrastructure, a runtime, and an open-source ecosystem of connectors. It supports change data capture (CDC), SaaS integration, database replication, streaming lakehouse, and real-time analytics pipelines. Users build pipelines as captures, collections, derivations, and materializations - manageable from the web dashboard, the flowctl CLI, and a REST/agent API.

Estuary Flow publishes 4 APIs on the APIs.io network. Tagged areas include Data, Streaming, Change Data Capture, CDC, and ETL.

Estuary Flow’s developer surface includes developer portal, documentation, signup flow, pricing, engineering blog, GitHub presence, CLI, and 13 more developer resources.

36.1/100 thin ▬ flat Agent 5/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFree
4 APIs
DataStreamingChange Data CaptureCDCETLELTReal-TimeData PipelineConnectorsLakehouse

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
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/estuary-flow: 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.

Estuary Flow Agent API

REST/JSON API backing the Estuary Flow web dashboard and flowctl CLI. Manages captures, collections, materializations, derivations, drafts, publications, tenants, and role grant...

Estuary Flow OpenMetrics API

OpenMetrics-compatible endpoint that exposes per-task pipeline metrics for captures, materializations, and derivations. Designed to be scraped by Prometheus or other OpenMetrics...

flowctl CLI

Command-line tool for authoring, drafting, testing, and publishing Flow catalogs (captures, collections, derivations, materializations). Wraps the Flow agent API and integrates ...

Estuary Flow Connectors

Open-source library of source and destination connectors for SaaS apps, databases, message queues, warehouses, lakehouses, and file systems. Connectors run inside the Flow runti...

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Estuary Flow Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Security Posture 1

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

Estuary Flow Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 1

Authentication, authorization, and security posture

Operate 4

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Other 2

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: estuary-flow
name: Estuary Flow
description: Estuary Flow is a real-time data movement and transformation platform combining streaming infrastructure, a runtime,
  and an open-source ecosystem of connectors. It supports change data capture (CDC), SaaS integration, database replication,
  streaming lakehouse, and real-time analytics pipelines. Users build pipelines as captures, collections, derivations, and
  materializations - manageable from the web dashboard, the flowctl CLI, and a REST/agent API.
type: Index
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Free
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/estuary-flow.png
url: https://raw.githubusercontent.com/api-evangelist/estuary-flow/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.23'
tags:
- Data
- Streaming
- Change Data Capture
- CDC
- ETL
- ELT
- Real-Time
- Data Pipeline
- Connectors
- Lakehouse
tags_raw:
- Data
- Streaming
- Change Data Capture
- CDC
- ETL
- ELT
- Real-Time
- Data Pipelines
- Connectors
- Lakehouse
apis:
- aid: estuary-flow:agent-api
  name: Estuary Flow Agent API
  description: REST/JSON API backing the Estuary Flow web dashboard and flowctl CLI. Manages captures, collections, materializations,
    derivations, drafts, publications, tenants, and role grants. Authenticated with a bearer token obtained from the dashboard.
  humanURL: https://docs.estuary.dev/concepts/web-app/
  baseURL: https://agent-api-1084703453822.us-central1.run.app
  tags:
  - REST
  - Capture
  - Collection
  - Materializations
  - Derivations
  tags_raw:
  - REST
  - Captures
  - Collections
  - Materializations
  - Derivations
  properties:
  - type: Documentation
    url: https://docs.estuary.dev/concepts/
  - type: Authentication
    url: https://docs.estuary.dev/guides/how_to_generate_refresh_token/
- aid: estuary-flow:openmetrics-api
  name: Estuary Flow OpenMetrics API
  description: OpenMetrics-compatible endpoint that exposes per-task pipeline metrics for captures, materializations, and
    derivations. Designed to be scraped by Prometheus or other OpenMetrics-aware observability systems.
  humanURL: https://docs.estuary.dev/reference/openmetrics-api/
  baseURL: https://agent-api-1084703453822.us-central1.run.app
  tags:
  - OpenMetrics
  - Prometheus
  - Observability
  - Metrics
  properties:
  - type: Documentation
    url: https://docs.estuary.dev/reference/openmetrics-api/
- aid: estuary-flow:flowctl-cli
  name: flowctl CLI
  description: Command-line tool for authoring, drafting, testing, and publishing Flow catalogs (captures, collections, derivations,
    materializations). Wraps the Flow agent API and integrates with local development workflows.
  humanURL: https://docs.estuary.dev/concepts/flowctl/
  baseURL: https://docs.estuary.dev/concepts/flowctl/
  tags:
  - CLI
  - Catalog
  - Drafts
  - Publications
  properties:
  - type: Documentation
    url: https://docs.estuary.dev/concepts/flowctl/
  - type: Repository
    url: https://github.com/estuary/flow
- aid: estuary-flow:connectors
  name: Estuary Flow Connectors
  description: Open-source library of source and destination connectors for SaaS apps, databases, message queues, warehouses,
    lakehouses, and file systems. Connectors run inside the Flow runtime and are configured as captures or materializations.
  humanURL: https://docs.estuary.dev/reference/Connectors/
  baseURL: https://docs.estuary.dev/reference/Connectors/
  tags:
  - Connectors
  - Sources
  - Destinations
  - Open-Source
  tags_raw:
  - Connectors
  - Sources
  - Destinations
  - Open Source
  properties:
  - type: Documentation
    url: https://docs.estuary.dev/reference/Connectors/
  - type: Repository
    url: https://github.com/estuary/connectors
common:
- type: IssueTracker
  url: https://github.com/estuary/flow/issues
- type: Releases
  url: https://github.com/estuary/flow/releases
- type: ContributionGuide
  url: https://github.com/estuary/flow/blob/master/CONTRIBUTING.md
- type: DomainSecurity
  url: security/estuary-flow-domain-security.yml
- type: Website
  url: https://estuary.dev
- type: Portal
  url: https://docs.estuary.dev
- type: Documentation
  url: https://docs.estuary.dev
- type: Signup
  url: https://dashboard.estuary.dev/register
- type: Login
  url: https://dashboard.estuary.dev
- type: Dashboard
  url: https://dashboard.estuary.dev
- type: Pricing
  url: https://estuary.dev/pricing/
- type: Blog
  url: https://estuary.dev/blog/
- type: GitHub
  url: https://github.com/estuary
- type: Repository
  url: https://github.com/estuary/flow
- type: CLI
  url: https://docs.estuary.dev/concepts/flowctl/
- type: Integrations
  url: https://docs.estuary.dev/reference/Connectors/
- type: TermsOfService
  url: https://estuary.dev/terms/
- type: PrivacyPolicy
  url: https://estuary.dev/privacy/
- type: Support
  url: https://estuary.dev/contact-us/
- type: Community
  url: https://go.estuary.dev/slack
- type: LlmsText
  url: https://estuary.dev/llms.txt
maintainers:
- FN: Kin Lane
  email: kinlane@gmail.com
x-parent: estuary
x-relationship: product

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/estuary-flow"
All providers
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose
curl "https://apis.io/api/v1/providers/estuary-flow/operations?limit=25"
How their score was established
curl "https://apis.io/api/v1/providers/estuary-flow/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

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