HackerRank

HackerRank is a developer skills platform used by companies to screen, interview, and upskill technical talent, and by more than 26 million developers to practice coding and earn skill certifications. Its products include Screen (automated coding assessments), Interview (collaborative real-time coding interviews), Engage (technical hiring events and hackathons), and SkillUp. HackerRank for Work exposes a public REST API (v3) so customers can programmatically manage tests, candidates, questions, interviews, and results, and integrate assessments into their own applicant-tracking and hiring workflows. This API Evangelist profile catalogs HackerRank's developer surface and the enrichment artifacts derived from it.

HackerRank is listed with 1 API on the APIs.io network. Tagged areas include Company, Developer Skills, Technical Hiring, Coding Assessment, and Recruiting.

HackerRank’s developer surface includes documentation, API reference, support, engineering blog, pricing, signup flow, authentication, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

24.8/100 emerging ▬ flat Agent 3/100 human only Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

CompanyDeveloper SkillsTechnical HiringCoding Assessment Recruiting Interviewing Education Developer Tools

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 24.8/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 7.7 / 17

Access Clarity 7.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 0 / 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 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

Regulatory Posture applies to this provider. Its tags matched the Education & Research 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 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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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<a href="https://apis.io/providers/hackerrank/"><img src="https://apis.io/badge/hackerrank/card.svg" alt="HackerRank on APIs.io — Kin Score by API Evangelist"></a>

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
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
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

12 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Operational Transparency scores 0.0 — up to +13.0 composite points
Contract Governance scores 0.0 — up to +12.0 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/hackerrank/apis.yml: open an issue on github.com/api-evangelist/hackerrank 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
Zoom App Marketplace and Partner Ecosystem (builders and partners on Zoom)	builds-on	45.4	-	1
HCM and Payroll Marketplaces (ADP, Workday, UKG, Paylocity)	builds-on	45.4	-	1

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.

APIs 1

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

HackerRank for Work API

REST API (v3) for HackerRank for Work. Lets customers programmatically manage tests, candidates, questions, interviews, and results, and integrate coding assessments into their ...

Security Posture 2

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

Hackerrank Authentication

http · 1 scheme

SECURITY

Hackerrank Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Source (apis.yml)

aid: hackerrank
name: HackerRank
description: HackerRank is a developer skills platform used by companies to screen, interview, and upskill technical talent,
  and by more than 26 million developers to practice coding and earn skill certifications. Its products include Screen (automated
  coding assessments), Interview (collaborative real-time coding interviews), Engage (technical hiring events and hackathons),
  and SkillUp. HackerRank for Work exposes a public REST API (v3) so customers can programmatically manage tests, candidates,
  questions, interviews, and results, and integrate assessments into their own applicant-tracking and hiring workflows. This
  API Evangelist profile catalogs HackerRank's developer surface and the enrichment artifacts derived from it.
url: https://raw.githubusercontent.com/api-evangelist/hackerrank/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- battery-ventures
- y-combinator
x-tier: profile
x-tier-reason: has-public-api
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - 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
  - security
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
image: https://www.hackerrank.com/wp-content/uploads/2018/08/hackerrank_logo.png
tags:
- Company
- Developer Skills
- Technical Hiring
- Coding Assessment
- Recruiting
- Interviewing
- Education
- Developer Tools
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: HackerRank for Work API
  description: REST API (v3) for HackerRank for Work. Lets customers programmatically manage tests, candidates, questions,
    interviews, and results, and integrate coding assessments into their own hiring and applicant-tracking workflows. Authenticated
    with a per-account bearer API key.
  humanURL: https://www.hackerrank.com/work/apidocs
  baseURL: https://www.hackerrank.com/x/api/v3
  tags:
  - Coding Assessment
  - Technical Hiring
  - Candidates
  - Tests
  properties:
  - type: APIReference
    url: https://www.hackerrank.com/work/apidocs
  - type: Authentication
    url: authentication/hackerrank-authentication.yml
common:
- url: https://www.hackerrank.com/blog/feed/
  type: BlogRSS
- type: Website
  url: https://www.hackerrank.com/
- type: DeveloperPortal
  url: https://www.hackerrank.com/work/apidocs
- type: Documentation
  url: https://support.hackerrank.com/hc/en-us
- type: APIReference
  url: https://www.hackerrank.com/work/apidocs
- type: Support
  url: https://support.hackerrank.com/hc/en-us
- type: Blog
  url: https://www.hackerrank.com/blog/
- type: Pricing
  url: https://www.hackerrank.com/pricing/
- type: SignUp
  url: https://www.hackerrank.com/get-started
- type: Login
  url: https://www.hackerrank.com/access-account
- type: TermsOfService
  url: https://www.hackerrank.com/about-us/terms-of-service
- type: PrivacyPolicy
  url: https://www.hackerrank.com/about-us/privacy
- type: Authentication
  url: authentication/hackerrank-authentication.yml
- type: WellKnown
  url: well-known/hackerrank-well-known.yml
- type: DomainSecurity
  url: security/hackerrank-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

HackerRank API — frequently asked questions

Does HackerRank have an API?

Yes. APIs.io lists 1 API from HackerRank, including HackerRank for Work API.

How do I authenticate with the HackerRank API?

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

Is the HackerRank API ready for AI agents?

HackerRank has a Kin Score of 24.8 out of 100 (emerging) and an Agent Readiness score of 2.5 (human-only), scored by API Evangelist on 2026-10-31.

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.

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Every operation they expose

curl "https://apis.io/api/v1/providers/hackerrank/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/hackerrank/evidence"

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