K6

k6 is an open source load testing tool by Grafana Labs for testing the performance and reliability of APIs using JavaScript-based test scripts.

K6 publishes 6 API contracts indexed on the APIs.io network, including Load tests API, Load zones API, Projects API, and 3 more. Tagged areas include Load Testing and Testing.

The K6 catalog on APIs.io includes 1 Spectral governance ruleset.

K6’s developer surface includes authentication, documentation, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.8/100 thin ▬ flat Agent 21/100 agent aware Front door AI 1/6 silent self hosted · AGPL-3.0 Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Load Testing Testing

Kin Score

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

Composite quality — 30.8/100 · thin

Contract Quality 9.2 / 19

Developer Ergonomics 3.6 / 15

Access Clarity 1.2 / 15

Operational Transparency 2.6 / 10

Contract Governance 1.2 / 9

Discoverability 2.9 / 8

Regulatory Posture 1.8 / 15

Open Source Surface 6.5 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 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 4 / 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 75 points between them, because both conditional facets apply and carry 25 points together. 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
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
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)

6 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
Contract Quality scores 49.0 — up to +12.8 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/k6/apis.yml: open an issue on github.com/api-evangelist/k6 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
Cloud Native (Kubernetes, CNCF, FinOps)	standard	40.7	-	-
Jenkins Plugins + CD Foundation Landscape	standard	40.7	-	-

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 6

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

K6

k6 is an open source load testing tool by Grafana Labs for testing the performance and reliability of APIs using JavaScript-based test scripts.

K6 Load tests API

Configure and manage load-testing resources.

K6 Load zones API

Manage geographic load-generation zones.

K6 Projects API

Manage k6 projects within a Grafana stack.

K6 Schedules API

Manage scheduled load-test execution.

K6 Test runs API

Inspect and control load-test execution runs.

Open Collections 6

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

Grafana Cloud k6 REST Load tests API

OPEN COLLECTION

Grafana Cloud k6 REST Load tests Load zones API

OPEN COLLECTION

Grafana Cloud k6 REST Load tests Projects API

OPEN COLLECTION

Grafana Cloud k6 REST Load tests Schedules API

OPEN COLLECTION

Grafana Cloud k6 REST Load tests Test runs API

OPEN COLLECTION

Grafana Cloud k6 REST API

OPEN COLLECTION

K6 API pricing

Not yet checked against K6's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

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 K6's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

K6 Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

K6 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.

K6

SLA

FinOps 1

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

K6 Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

K6 API Rules

62 rules · 60 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

K6 Authentication

http · 1 scheme

SECURITY

K6 Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

K6 Agentic Access

5 operations

5 operations · 0 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

IssueTracker

IssueTracker

Releases

Releases

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

License

License

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: k6
name: K6
description: k6 is an open source load testing tool by Grafana Labs for testing the performance and reliability of APIs using
  JavaScript-based test scripts.
type: Index
deliveryModel:
  model: self-hosted
  license: AGPL-3.0
  open_source: true
  commercial: false
  callable_host: true
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/k6.png
tags:
- Load Testing
- Testing
url: https://raw.githubusercontent.com/api-evangelist/k6/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-04-28'
specificationVersion: '0.23'
apis:
- aid: k6:k6
  name: K6
  description: k6 is an open source load testing tool by Grafana Labs for testing the performance and reliability of APIs
    using JavaScript-based test scripts.
  humanURL: https://k6.io
  tags:
  - Load Testing
  - Testing
  properties:
  - type: Documentation
    url: https://grafana.com/docs/k6/latest/
  - type: GitHubRepository
    url: https://github.com/grafana/k6
- aid: k6:k6-load-tests-api
  name: K6 Load tests API
  description: Configure and manage load-testing resources.
  humanURL: https://k6.io
  tags:
  - Load Tests
  tags_raw:
  - Load tests
  properties:
  - type: OpenAPI
    url: openapi/k6-load-tests-api-openapi.yml
- aid: k6:k6-load-zones-api
  name: K6 Load zones API
  description: Manage geographic load-generation zones.
  humanURL: https://k6.io
  tags:
  - Load zones
  properties:
  - type: OpenAPI
    url: openapi/k6-load-zones-api-openapi.yml
- aid: k6:k6-projects-api
  name: K6 Projects API
  description: Manage k6 projects within a Grafana stack.
  humanURL: https://k6.io
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/k6-projects-api-openapi.yml
- aid: k6:k6-schedules-api
  name: K6 Schedules API
  description: Manage scheduled load-test execution.
  humanURL: https://k6.io
  tags:
  - Schedule
  tags_raw:
  - Schedules
  properties:
  - type: OpenAPI
    url: openapi/k6-schedules-api-openapi.yml
- aid: k6:k6-test-runs-api
  name: K6 Test runs API
  description: Inspect and control load-test execution runs.
  humanURL: https://k6.io
  tags:
  - Test Runs
  tags_raw:
  - Test runs
  properties:
  - type: OpenAPI
    url: openapi/k6-test-runs-api-openapi.yml
common:
- type: Plans
  url: plans/k6-plans-pricing.yml
- type: RateLimits
  url: rate-limits/k6-rate-limits.yml
- type: FinOps
  url: finops/k6-finops.yml
- type: IssueTracker
  url: https://github.com/grafana/k6/issues
- type: Releases
  url: https://github.com/grafana/k6/releases
- type: CodeOfConduct
  url: https://github.com/grafana/k6/blob/master/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/grafana/k6/blob/master/CONTRIBUTING.md
- type: License
  name: AGPL-3.0
  url: https://github.com/grafana/k6/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/k6-agentic-access.yml
- type: DomainSecurity
  url: security/k6-domain-security.yml
- type: Authentication
  url: authentication/k6-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/k6io
- type: Website
  url: https://k6.io
- type: Documentation
  url: https://grafana.com/docs/k6/latest/
- type: GitHubOrganization
  url: https://github.com/grafana/k6
- url: https://grafana.com/tags/k6/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

K6 API — frequently asked questions

Does K6 have an API?

Yes. APIs.io lists 6 APIs from K6, including K6, K6 Load tests API and K6 Load zones API, and 3 more.

Is there an OpenAPI specification for the K6 API?

Yes. APIs.io indexes 5 OpenAPI specifications for K6, each linked for download from this page.

How do I authenticate with the K6 API?

K6 uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as K6 Authentication.

How much does the K6 API cost?

APIs.io lists 3 pricing plans for K6, with each plan's price, limits and inclusions under Pricing on this page.

Is the K6 API ready for AI agents?

K6 has a Kin Score of 30.8 out of 100 (thin) and an Agent Readiness score of 20.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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