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 API contracts indexed on the APIs.io network: PubImportApi API and PublicExportApi API. Tagged areas include Company, Quality Assurance, Customer Service, Customer Experience, and Conversation Analytics.

The Klaus catalog on APIs.io includes 1 Spectral governance ruleset.

Klaus’ developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 31 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

64.7/100 strong ▬ flat Agent 25/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

2 published contracts 5 Agent Skills

Company Quality Assurance Customer Service Customer ExperienceConversation AnalyticsContact Center Coaching Artificial Intelligence Software-as-a-Service

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Customer Service Management

BC-430

PublicExportApi

Kin Score

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

Composite quality — 64.7/100 · strong

Contract Quality 8.7 / 19

Developer Ergonomics 8.8 / 15

Access Clarity 15.0 / 15

Operational Transparency 7.4 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 4.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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.

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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 46.3 — up to +13.4 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Developer Ergonomics scores 58.9 — 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/klaus/apis.yml: open an issue on github.com/api-evangelist/klaus 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
Software Supply Chain (SBOM, Signing, Open Source Security)	builds-on	19.7 (thin)	-	-

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 1

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)

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 2

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

Public Export PubImportApi API

OPEN COLLECTION

Public Export PubImportApi PublicExportApi API

OPEN COLLECTION

Agent Skills 5

Packaged agent skills for driving this provider's APIs from an AI assistant.

Export AutoQA ratings and CSAT from Zendesk QA

AGENT SKILL

Export Zendesk QA quiz results and leaderboards

AGENT SKILL

Export Zendesk QA reviews for external analysis

AGENT SKILL

Import conversations and users into Zendesk QA

AGENT SKILL

Investigate a customer's conversations and their review history

AGENT SKILL

Klaus API pricing

Prices published by Klaus, read 2026-10-07 from www.zendesk.com/pricing/.

Plan	Price
Support Team	$19 agent/month paid yearly Includes: Email and ticketing system, ticket routing, prebuilt analytics dashboards; 5 ARs per agent/month
Suite Team	$55 agent/month paid yearly Includes: Support Team features plus AI Agents, omnichannel routing, messaging and live chat, telephony; 5 ARs
Suite Professional	$115 agent/month paid yearly Includes: Suite Team features plus Admin Copilot, App Builder, AI Writing Tools, skills-based routing, IVR; 10
Suite Enterprise + Copilot	Talk to Sales Includes: Suite Professional features plus intelligent triage, auto assist, generative AI for voice, approval
Support Team (monthly subscription)	$25 per agent/month
Suite Team (monthly subscription)	$69 per agent/month
Suite Professional (monthly subscription)	$149 per agent/month
Copilot add-on	$50 agent/month paid yearly

All 11 plans, limits and sources →

Billed by: agent · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Klaus Plans Pricing

11 plans

PLANS

Klaus Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Klaus Rate Limits

4 limits

RATE LIMITS

Service Levels 1

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

Klaus

SLA

FinOps 1

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

Klaus Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Klaus API Rules

49 rules · 45 errors 3 warnings 1 info

SPECTRAL

OpenAPI Overlays 2

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Klaus Public Export Api Overlay

5 actions · update · klaus-public-export-api-openapi-original.json

DERIVED

Klaus Public Import Api Overlay

5 actions · update · klaus-public-import-api-openapi-original.json

DERIVED

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

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

LLMsTxt

WellKnown

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Security

Security

Compliance

Compliance

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 5

Status, limits, changes, and where to get help

Support

StatusPage

Deprecation

RateLimits

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 4

Properties that don't map to a standard resource type

ParentCompany

CapabilityMap

Overlay

ProductPage

Source (apis.yml)

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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - 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: '2026-11-06'
  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 Service
- 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
- Customer-Support
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: Plans
  url: plans/klaus-plans-pricing.yml
- 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

Klaus API — frequently asked questions

Does Klaus have an API?

Yes. APIs.io lists 2 APIs from Klaus, including Klaus PubImportApi API and Klaus PublicExportApi API.

Is there an OpenAPI specification for the Klaus API?

Yes. APIs.io indexes 2 OpenAPI specifications for Klaus, each linked for download from this page.

How do I authenticate with the Klaus API?

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

How much does the Klaus API cost?

Klaus publishes its prices; its Support Team plan is $19 agent/month paid yearly as of 2026-10-07. APIs.io lists 11 pricing plans for Klaus, with each plan's price, limits and inclusions under Pricing on this page.

Is the Klaus API ready for AI agents?

Klaus has a Kin Score of 64.7 out of 100 (strong) and an Agent Readiness score of 25.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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