Litmus Hiring

Litmus is a Y Combinator-backed technical hiring platform that turns repositories, engineering tickets, and job descriptions into structured, project-based technical assessments and interview pipelines tailored to how a team actually ships. It evaluates candidates on both code quality and development process, lets them work in their own IDE or terminal, and captures AI-tool usage (Claude Code, Copilot CLI) transparently. Candidate management syncs with the Ashby, Greenhouse, and Lever applicant-tracking systems. Litmus exposes a bearer-key REST API (roles, invites, submissions) and an official hosted Model Context Protocol (MCP) server for agent-driven access to submissions, candidates, pipeline status, and assessment authoring.

Litmus Hiring publishes 3 APIs on the APIs.io network: Invites API, Roles API, and Submissions API. Tagged areas include Company, Hiring, Recruitment, Technical Assessment, and Developer Hiring.

Litmus Hiring’s developer surface includes documentation, API reference, getting-started guide, support, authentication, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.3/100 thin ▬ flat Agent 55/100 agent ready Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessSelf serve

3 APIs 1 MCP Servers

CompanyHiringRecruitmentTechnical AssessmentDeveloper HiringMCPInterviewingY Combinator

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 42.3/100 · thin

Contract Quality 15.1 / 25

Developer Ergonomics 13.0 / 20

Commercial Clarity 4.2 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 10.0 / 10

Agent readiness — 55/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/litmus-hiring: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

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

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Litmus Hiring Scopes

7 scopes · authorizationCode

7 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

WellKnown

LLMsTxt

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: litmus-hiring
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/litmus-hiring.png
name: Litmus Hiring
description: Litmus is a Y Combinator-backed technical hiring platform that turns repositories, engineering tickets, and job
  descriptions into structured, project-based technical assessments and interview pipelines tailored to how a team actually
  ships. It evaluates candidates on both code quality and development process, lets them work in their own IDE or terminal,
  and captures AI-tool usage (Claude Code, Copilot CLI) transparently. Candidate management syncs with the Ashby, Greenhouse,
  and Lever applicant-tracking systems. Litmus exposes a bearer-key REST API (roles, invites, submissions) and an official
  hosted Model Context Protocol (MCP) server for agent-driven access to submissions, candidates, pipeline status, and assessment
  authoring.
url: https://raw.githubusercontent.com/api-evangelist/litmus-hiring/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: profiled
x-tier-reason: enriched-from-provider-surface
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Hiring
- Recruitment
- Technical Assessment
- Developer Hiring
- MCP
- Interviewing
- Y Combinator
common:
- url: https://litmushiring.com
  type: Website
- url: https://litmushiring.com/docs
  type: DeveloperPortal
- url: https://litmushiring.com/docs
  type: Documentation
- url: https://litmushiring.com/docs/rest
  type: APIReference
- url: https://litmushiring.com/docs/mcp/quickstart
  type: GettingStarted
- url: https://litmushiring.com/privacy
  type: PrivacyPolicy
- url: https://litmushiring.com/terms
  type: TermsOfService
- url: mailto:support@litmushiring.com
  type: Support
- url: mcp/litmus-hiring-mcp.yml
  type: MCPServer
- url: authentication/litmus-hiring-authentication.yml
  type: Authentication
- url: scopes/litmus-hiring-scopes.yml
  type: OAuthScopes
- url: conventions/litmus-hiring-conventions.yml
  type: Conventions
- url: errors/litmus-hiring-problem-types.yml
  type: ErrorCatalog
- url: lifecycle/litmus-hiring-lifecycle.yml
  type: Lifecycle
- url: conformance/litmus-hiring-conformance.yml
  type: Conformance
- url: data-model/litmus-hiring-data-model.yml
  type: DataModel
- url: well-known/litmus-hiring-well-known.yml
  type: WellKnown
- url: llms/litmus-hiring-llms.txt
  type: LLMsTxt
- url: skills/_index.yml
  type: AgentSkill
- url: security/litmus-hiring-domain-security.yml
  type: DomainSecurity
apis:
- aid: litmus-hiring:litmus-hiring-invites-api
  name: Litmus Hiring Invites API
  description: Candidate invitations
  humanURL: https://litmushiring.com/docs/rest
  baseURL: https://www.litmushiring.com/api/v1
  tags:
  - Invites
  properties:
  - type: OpenAPI
    url: openapi/litmus-hiring-invites-api-openapi.yml
  - type: Documentation
    url: https://litmushiring.com/docs/rest
  - type: APIReference
    url: https://litmushiring.com/docs/rest
- aid: litmus-hiring:litmus-hiring-roles-api
  name: Litmus Hiring Roles API
  description: Open roles within your organization
  humanURL: https://litmushiring.com/docs/rest
  baseURL: https://www.litmushiring.com/api/v1
  tags:
  - Roles
  properties:
  - type: OpenAPI
    url: openapi/litmus-hiring-roles-api-openapi.yml
  - type: Documentation
    url: https://litmushiring.com/docs/rest
  - type: APIReference
    url: https://litmushiring.com/docs/rest
- aid: litmus-hiring:litmus-hiring-submissions-api
  name: Litmus Hiring Submissions API
  description: Candidate assessment submissions
  humanURL: https://litmushiring.com/docs/rest
  baseURL: https://www.litmushiring.com/api/v1
  tags:
  - Submissions
  properties:
  - type: OpenAPI
    url: openapi/litmus-hiring-submissions-api-openapi.yml
  - type: Documentation
    url: https://litmushiring.com/docs/rest
  - type: APIReference
    url: https://litmushiring.com/docs/rest
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 17
  pass: local-v1

Litmus Hiring

Kin Score

APIs 3

Litmus Hiring Invites API

Litmus Hiring Roles API

Litmus Hiring Submissions API