Quix

Quix is a Python-native stream-processing platform for real-time data and ML. It pairs Quix Streams - an open source (Apache 2.0) Python library for building containerized stream-processing applications on Apache Kafka - with Quix Cloud, a fully managed platform offering managed Kafka, Kubernetes deployments, and a set of HTTP and SignalR/WebSocket APIs for writing data in, reading data out in real time, and managing workspaces, topics, and deployments.

Quix publishes 9 API contracts indexed on the APIs.io network, including Streaming Reader API (Real-time), Definitions API, Deployments API, and 6 more. Tagged areas include Stream Processing, Real-Time, Kafka, Python, and Streaming Data.

The Quix catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Quix’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.3/100 thin ▬ flat Agent 20/100 agent aware Front door AI 4/6 moderate Heartbeat 76/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumOpenFree trial⚡ Free to try

1 published contract

Stream Processing Real-Time Kafka Python Streaming Data

Kin Score

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

Composite quality — 29.3/100 · thin

Contract Quality 10.9 / 19

Developer Ergonomics 3.6 / 15

Access Clarity 1.2 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.8 / 15

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 6 / 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 0 / 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.

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)
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):

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 23.8 — up to +15.2 composite points
Operational Transparency scores 10.5 — up to +11.6 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/quix/apis.yml: open an issue on github.com/api-evangelist/quix 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 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.

OpenAPI

measured — observed by APIs.io (published)

AsyncAPI

measured — observed by APIs.io (published)

APIs 9

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

Quix Streaming Reader API (Real-time)

Subscribe to live parameter data, events, definitions, active streams, topic metrics, and raw packages from Quix topics in real time over a Microsoft SignalR hub (WebSockets, wi...

Quix Streams (Open Source)

Apache 2.0 open source Python library (pip install quixstreams) for building containerized stream-processing applications on Apache Kafka, using a declarative StreamingDataFrame...

Quix Definitions API

Declare parameter and event metadata for a stream (Streaming Writer API).

Quix Deployments API

Manage and monitor service deployments (Portal API).

Quix Event Data API

Publish discrete events into a stream (Streaming Writer API).

Quix Parameter Data API

Publish time-series parameter data into a stream (Streaming Writer API).

Quix Streams API

Create and close streams within a topic (Streaming Writer API).

Quix Topics API

Manage Kafka topics in a workspace (Portal API).

Quix Workspaces API

Manage Quix Cloud workspaces / environments (Portal API).

Scroll for all 9

Open Collections 8

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

Quix Cloud HTTP APIs Definitions API

OPEN COLLECTION

Quix Cloud HTTP APIs Definitions Deployments API

OPEN COLLECTION

Quix Cloud HTTP APIs Definitions Event Data API

OPEN COLLECTION

Quix Cloud HTTP APIs Definitions Parameter Data API

OPEN COLLECTION

Quix Cloud HTTP APIs Definitions Streams API

OPEN COLLECTION

Quix Cloud HTTP APIs Definitions Topics API

OPEN COLLECTION

Quix Cloud HTTP APIs Definitions Workspaces API

OPEN COLLECTION

Quix Cloud HTTP APIs

OPEN COLLECTION

Scroll for all 8

Quix API pricing

Not yet checked against Quix's own pricing page. Compiled by API Evangelist on 2026-06-21 from quix.io/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Quix Streams (Open Source) free	—
Quix Cloud Free Trial trial	—
Quix Cloud Professional usage	—
Quix Cloud Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Streaming Writer API Throughput: see provider documentation requests
Streaming Reader API Connections: see provider documentation connections
Portal API Requests: see provider documentation requests

Compiled by API Evangelist, not yet checked against Quix's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Quix Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Quix Rate Limits

3 limits

RATE LIMITS

Service Levels 1

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

Quix

SLA

FinOps 1

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

Quix Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Quix Streaming Reader API (SignalR / WebSocket)

AsyncAPI 2.6 description of the Quix **Streaming Reader API**, a real-time, bidirectional surface delivered over a **Microsoft SignalR hub**. SignalR negotiates the best availab...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Quix — asyncapi rules

10 rules · 1 errors 8 warnings 1 info

SPECTRAL

Security Posture 2

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

Quix Authentication

http · 1 scheme

SECURITY

Quix Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Quix Agentic Access

16 operations · 11 acting · 1 human-in-the-loop

16 operations · 11 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: quix
url: https://raw.githubusercontent.com/api-evangelist/quix/refs/heads/main/apis.yml
name: Quix
kind: company
description: Quix is a Python-native stream-processing platform for real-time data and ML. It pairs Quix Streams - an open
  source (Apache 2.0) Python library for building containerized stream-processing applications on Apache Kafka - with Quix
  Cloud, a fully managed platform offering managed Kafka, Kubernetes deployments, and a set of HTTP and SignalR/WebSocket
  APIs for writing data in, reading data out in real time, and managing workspaces, topics, and deployments.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - quixio/quix-streams
  open_source: unknown
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: open
  trial: true
  try_now: true
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Freemium (free trial) · Open access
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/quix.png
tags:
- Stream Processing
- Real-Time
- Kafka
- Python
- Streaming Data
tags_raw:
- Stream Processing
- Real Time
- Kafka
- Python
- Streaming Data
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.23'
apis:
- aid: quix:streaming-reader-api
  name: Quix Streaming Reader API (Real-time)
  tags:
  - Streaming
  - Reader
  - Real-Time
  - SignalR
  - WebSocket
  tags_raw:
  - Streaming
  - Reader
  - Real Time
  - SignalR
  - WebSocket
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://quix.io/docs/quix-cloud/apis/streaming-reader-api/overview.html
  baseURL: https://reader-{environmentId}.cloud.quix.io/hub
  properties:
  - url: https://quix.io/docs/quix-cloud/apis/streaming-reader-api/overview.html
    type: Documentation
  - url: asyncapi/quix-asyncapi.yml
    type: AsyncAPI
  description: Subscribe to live parameter data, events, definitions, active streams, topic metrics, and raw packages from
    Quix topics in real time over a Microsoft SignalR hub (WebSockets, with Long Polling fallback). Authenticated with a PAT
    via accessTokenFactory.
- aid: quix:quix-streams-oss
  name: Quix Streams (Open Source)
  tags:
  - Open Source
  - Python
  - Kafka
  - Library
  tags_raw:
  - Open Source
  - Python
  - Kafka
  - Library
  - Open-Source
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://quix.io/docs/quix-streams/introduction.html
  baseURL: https://github.com/quixio/quix-streams
  properties:
  - url: https://quix.io/docs/quix-streams/introduction.html
    type: Documentation
  - url: https://github.com/quixio/quix-streams
    type: SourceCode
  description: Apache 2.0 open source Python library (pip install quixstreams) for building containerized stream-processing
    applications on Apache Kafka, using a declarative StreamingDataFrame and an Application runtime with windowing, stateful
    processing, streaming joins, and sources/sinks. Requires Python 3.9+; not a hosted API - included here as the OSS foundation
    of the platform.
- aid: quix:quix-definitions-api
  name: Quix Definitions API
  description: Declare parameter and event metadata for a stream (Streaming Writer API).
  humanURL: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  baseURL: https://writer-{environmentId}.cloud.quix.io
  tags:
  - Definitions
  properties:
  - type: OpenAPI
    url: openapi/quix-definitions-api-openapi.yml
  - type: Documentation
    url: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  - type: Documentation
    url: https://quix.io/docs/develop/apis-overview.html
- aid: quix:quix-deployments-api
  name: Quix Deployments API
  description: Manage and monitor service deployments (Portal API).
  humanURL: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  baseURL: https://writer-{environmentId}.cloud.quix.io
  tags:
  - Deployment
  tags_raw:
  - Deployments
  properties:
  - type: OpenAPI
    url: openapi/quix-deployments-api-openapi.yml
  - type: Documentation
    url: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  - type: Documentation
    url: https://quix.io/docs/develop/apis-overview.html
- aid: quix:quix-event-data-api
  name: Quix Event Data API
  description: Publish discrete events into a stream (Streaming Writer API).
  humanURL: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  baseURL: https://writer-{environmentId}.cloud.quix.io
  tags:
  - Event Data
  properties:
  - type: OpenAPI
    url: openapi/quix-event-data-api-openapi.yml
  - type: Documentation
    url: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  - type: Documentation
    url: https://quix.io/docs/develop/apis-overview.html
- aid: quix:quix-parameter-data-api
  name: Quix Parameter Data API
  description: Publish time-series parameter data into a stream (Streaming Writer API).
  humanURL: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  baseURL: https://writer-{environmentId}.cloud.quix.io
  tags:
  - Parameter Data
  properties:
  - type: OpenAPI
    url: openapi/quix-parameter-data-api-openapi.yml
  - type: Documentation
    url: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  - type: Documentation
    url: https://quix.io/docs/develop/apis-overview.html
- aid: quix:quix-streams-api
  name: Quix Streams API
  description: Create and close streams within a topic (Streaming Writer API).
  humanURL: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  baseURL: https://writer-{environmentId}.cloud.quix.io
  tags:
  - Streams
  properties:
  - type: OpenAPI
    url: openapi/quix-streams-api-openapi.yml
  - type: Documentation
    url: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  - type: Documentation
    url: https://quix.io/docs/develop/apis-overview.html
- aid: quix:quix-topics-api
  name: Quix Topics API
  description: Manage Kafka topics in a workspace (Portal API).
  humanURL: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  baseURL: https://writer-{environmentId}.cloud.quix.io
  tags:
  - Topic
  tags_raw:
  - Topics
  properties:
  - type: OpenAPI
    url: openapi/quix-topics-api-openapi.yml
  - type: Documentation
    url: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  - type: Documentation
    url: https://quix.io/docs/develop/apis-overview.html
- aid: quix:quix-workspaces-api
  name: Quix Workspaces API
  description: Manage Quix Cloud workspaces / environments (Portal API).
  humanURL: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  baseURL: https://writer-{environmentId}.cloud.quix.io
  tags:
  - Workspace
  tags_raw:
  - Workspaces
  properties:
  - type: OpenAPI
    url: openapi/quix-workspaces-api-openapi.yml
  - type: Documentation
    url: https://quix.io/docs/quix-cloud/apis/streaming-writer-api/overview.html
  - type: Documentation
    url: https://quix.io/docs/develop/apis-overview.html
common:
- type: AgenticAccess
  url: agentic-access/quix-agentic-access.yml
- type: DomainSecurity
  url: security/quix-domain-security.yml
- type: Authentication
  url: authentication/quix-authentication.yml
- type: GitHubOrganization
  url: https://github.com/quixio
- type: LinkedIn
  url: https://www.linkedin.com/company/quix
- type: Website
  url: https://quix.io/
- type: Documentation
  url: https://quix.io/docs/
- type: Plans
  url: plans/quix-plans-pricing.yml
- type: RateLimits
  url: rate-limits/quix-rate-limits.yml
- type: FinOps
  url: finops/quix-finops.yml
- url: https://quix.io/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Quix API — frequently asked questions

Does Quix have an API?

Yes. APIs.io lists 9 APIs from Quix, including Quix Streaming Reader API (Real-time), Quix Streams (Open Source) and Quix Definitions API, and 6 more.

Is there an OpenAPI specification for the Quix API?

Yes. APIs.io indexes 7 OpenAPI specifications for Quix, each linked for download from this page.

How do I authenticate with the Quix API?

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

How much does the Quix API cost?

APIs.io lists 4 pricing plans for Quix, with each plan's price, limits and inclusions under Pricing on this page.

Is the Quix API ready for AI agents?

Quix has a Kin Score of 29.3 out of 100 (thin) and an Agent Readiness score of 20.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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