Klaus website screenshot

Klaus

Klaus is an AI-powered conversation review and quality assurance (QA) platform for customer support teams, founded in Tallinn, Estonia in 2019 and acquired by Zendesk in 2023, where it now ships as Zendesk QA. The product samples support conversations from connected help desks, scores them against configurable scorecards and rating categories, runs AutoQA checks, tracks disputes and calibration sessions, measures CSAT, and delivers coaching, quizzes and agent-performance dashboards. Klaus exposes two public REST APIs — a Public Import API for pushing conversations and users into QA from a custom help desk, and a Public Export API for pulling reviews, AutoQA ratings, CSAT, disputes, calibration sessions, scorecards, quizzes and users back out for external analysis. Both are documented as Swagger 2.0 specifications at pub.klausapp.com and authenticated with a bearer API token issued from a Zendesk QA custom integration.

Klaus publishes 2 APIs on the APIs.io network: PubImportApi API and PublicExportApi API. Tagged areas include Company, Quality Assurance, Customer-Support, Customer Experience, and Conversation Analytics.

Klaus’ developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 30 more developer resources.

53.0/100 developing ▬ flat Agent 25/100 agent aware saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0
2 APIs
CompanyQuality AssuranceCustomer-SupportCustomer ExperienceConversation AnalyticsContact CenterCoachingArtificial IntelligenceSoftware-as-a-Service

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0
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/klaus: 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 2

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

Klaus PubImportApi API

The PubImportApi API from Klaus — 3 operation(s) for pubimportapi.

Klaus PublicExportApi API

The PublicExportApi API from Klaus — 18 operation(s) for publicexportapi.

Open Collections 3

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

API Collection

OPEN COLLECTION

Rate Limits 1

Documented rate limits and quota policies.

Klaus Rate Limits

4 limits

RATE LIMITS

Security Posture 4

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

Klaus Authentication

apiKey · 1 scheme

SECURITY

Klaus Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Klaus Vulnerability Disclosure

Hackerone · contact published

SECURITY

Klaus Trust Center

SOC 2 Type II, ISO 27001:2022, ISO 27017:2015, ISO 27018:2019, ISO 27701:2019, ISO 42001, FedRAMP LI-SaaS, CSA STAR AI Levels 1 & 2, HIPAA (BAA available), HDS

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 6

Authentication, authorization, and security posture

Operate 5

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 4

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: klaus
name: Klaus
description: Klaus is an AI-powered conversation review and quality assurance (QA) platform for customer support teams, founded
  in Tallinn, Estonia in 2019 and acquired by Zendesk in 2023, where it now ships as Zendesk QA. The product samples support
  conversations from connected help desks, scores them against configurable scorecards and rating categories, runs AutoQA
  checks, tracks disputes and calibration sessions, measures CSAT, and delivers coaching, quizzes and agent-performance dashboards.
  Klaus exposes two public REST APIs — a Public Import API for pushing conversations and users into QA from a custom help
  desk, and a Public Export API for pulling reviews, AutoQA ratings, CSAT, disputes, calibration sessions, scorecards, quizzes
  and users back out for external analysis. Both are documented as Swagger 2.0 specifications at pub.klausapp.com and authenticated
  with a bearer API token issued from a Zendesk QA custom integration.
url: https://raw.githubusercontent.com/api-evangelist/klaus/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  - url: https://www.klausapp.com/
    status: 301
    note: declared website redirects to https://www.zendesk.com/service/quality-assurance/ — a different registrable domain
      (klausapp.com -> zendesk.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
image: https://d1eipm3vz40hy0.cloudfront.net/images/logos/favicons/zendesk-image.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- creandum
x-tier: profiled
x-tier-reason: public-api-specs-harvested
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Quality Assurance
- Customer-Support
- Customer Experience
- Conversation Analytics
- Contact Center
- Coaching
- Artificial Intelligence
- Software-as-a-Service
tags_raw:
- Company
- Quality Assurance
- Customer Support
- Customer Experience
- Conversation Analytics
- Contact Center
- Coaching
- Artificial Intelligence
- SaaS
apis:
- aid: klaus:klaus-pubimportapi-api
  name: Klaus PubImportApi API
  description: The PubImportApi API from Klaus — 3 operation(s) for pubimportapi.
  humanURL: https://pub.klausapp.com/?urls.primaryName=Public+Export+API
  baseURL: https://yoursubdomain.zendesk.com/qa
  tags:
  - PubImportApi
  properties:
  - type: OpenAPI
    url: openapi/klaus-pubimportapi-api-openapi.yml
  - type: Swagger
    url: openapi/_original/klaus-public-export-api-openapi-original.json
  - type: Documentation
    url: https://support.zendesk.com/hc/en-us/articles/7043724806810-Exporting-data-from-Zendesk-QA
  - type: Swagger
    url: openapi/_original/klaus-public-import-api-openapi-original.json
  - type: Documentation
    url: https://support.zendesk.com/hc/en-us/articles/7043724785178-Importing-conversations-via-API-non-migrated-accounts
- aid: klaus:klaus-publicexportapi-api
  name: Klaus PublicExportApi API
  description: The PublicExportApi API from Klaus — 18 operation(s) for publicexportapi.
  humanURL: https://pub.klausapp.com/?urls.primaryName=Public+Export+API
  baseURL: https://yoursubdomain.zendesk.com/qa
  tags:
  - PublicExportApi
  properties:
  - type: OpenAPI
    url: openapi/klaus-publicexportapi-api-openapi.yml
  - type: Swagger
    url: openapi/_original/klaus-public-export-api-openapi-original.json
  - type: Documentation
    url: https://support.zendesk.com/hc/en-us/articles/7043724806810-Exporting-data-from-Zendesk-QA
  - type: Swagger
    url: openapi/_original/klaus-public-import-api-openapi-original.json
  - type: Documentation
    url: https://support.zendesk.com/hc/en-us/articles/7043724785178-Importing-conversations-via-API-non-migrated-accounts
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: ParentCompany
  url: https://apis.io/providers/zendesk/
  name: Zendesk
  x-relationship: acquired
  x-evidence: Klaus is an AI-powered conversation review and quality assurance (QA) platform for customer support teams, founded
    in Tallinn, Estonia in 2019 and acquired by Zendesk in 2023, where it now ships as Zendesk QA.
- type: CapabilityMap
  url: capabilities/klaus-capability-edges.yml
  name: Klaus Business Capability Map
- type: Overlay
  url: overlays/klaus-public-export-api-overlay.yaml
- type: Website
  url: https://www.klausapp.com/
- type: ProductPage
  url: https://www.zendesk.com/service/quality-assurance/
- type: DeveloperPortal
  url: https://developer.zendesk.com/
- type: Documentation
  url: https://support.zendesk.com/hc/en-us/sections/6999625340058-Using-Zendesk-QA
- type: APIReference
  url: https://pub.klausapp.com/
- type: GettingStarted
  url: https://support.zendesk.com/hc/en-us/articles/10093676975898-Getting-started-with-Zendesk-QA-Admin-guide
- type: Support
  url: https://support.zendesk.com/hc/en-us/articles/4408843597850-Contacting-Zendesk-customer-support
- type: Blog
  url: https://www.zendesk.com/blog/
- type: GitHubOrganization
  url: https://github.com/klausapp
- type: Pricing
  url: https://www.zendesk.com/pricing/
- type: SignUp
  url: https://www.zendesk.com/register/
- type: Login
  url: https://www.zendesk.com/login/
- type: TermsOfService
  url: https://www.zendesk.com/company/agreements-and-terms/zendesk-customer-agreement/
- type: PrivacyPolicy
  url: https://www.zendesk.com/company/agreements-and-terms/privacy-notice/
- type: StatusPage
  url: https://status.zendesk.com/
- type: Deprecation
  url: https://support.zendesk.com/hc/en-us/articles/10049464191258-Announcing-the-removal-of-Klaus-surveys-and-the-Zendesk-QA-conversations-Insights-view
- type: Security
  url: https://www.zendesk.com/company/policies-and-guidelines/responsible-disclosure-policy/
- type: Compliance
  url: https://www.zendesk.com/trust-center/
- type: TrustCenter
  url: https://www.zendesk.com/trust-center/
- type: VulnerabilityDisclosure
  url: security/klaus-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/klaus-domain-security.yml
- type: Authentication
  url: authentication/klaus-authentication.yml
- type: Conventions
  url: conventions/klaus-conventions.yml
- type: Idempotency
  url: conventions/klaus-conventions.yml
- type: RateLimits
  url: rate-limits/klaus-rate-limits.yml
- type: ErrorCatalog
  url: errors/klaus-problem-types.yml
- type: Lifecycle
  url: lifecycle/klaus-lifecycle.yml
- type: ChangeLog
  url: changelog/klaus-changelog.yml
- type: Conformance
  url: conformance/klaus-conformance.yml
- type: DataModel
  url: data-model/klaus-data-model.yml
- type: X-MCPServerCandidate
  url: mcp/klaus-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/klaus-llms.txt
- type: WellKnown
  url: well-known/klaus-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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

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

Get an API key

Free tier, no email required.

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