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Linear

Linear is an issue tracking and product development platform for software teams covering Intake, Plan, Build, Diffs (code review), and Monitor. The public developer surface is a GraphQL API at https://api.linear.app/graphql with OAuth 2.0 and personal API key auth, signed webhooks, a TypeScript SDK, an Agent SDK / Agent Interaction Guidelines for AI agents, and integrations with GitHub, Slack, Figma, Cursor, Codex, GitHub Copilot, and others. Serves 25,000+ product teams.

agent aware

Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.

Kin Score

API Evangelist profiles Linear the way a machine reads it — 24 machine-readable artifacts across 4 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Linear scores 40.7/100 (thin), with a separate agent-readiness read of 22/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 40.7/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 7.0 / 20
Commercial Clarity 16.3 / 20
Operational Transparency 9.9 / 13
Governance 0.0 / 12
Discoverability 7.5 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
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 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile Linear

Each block below is one kind of artifact we hold for Linear. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 4

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

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

Linear GraphQL API

Single GraphQL endpoint exposing Linear's full data model - issues, projects, initiatives, cycles, teams, users, comments, documents, customers, customer requests, and more. Aut...

Linear Webhooks

Outbound webhooks for data-change events across Issues, Issue attachments, Issue comments, Issue labels, Comment reactions, Projects, Project updates, Documents, Initiatives, In...

Linear OAuth 2.0

OAuth 2.0 authorization-code and PKCE flows for third-party apps. Authorize at https://linear.app/oauth/authorize, exchange tokens at https://api.linear.app/oauth/token. Scopes ...

Linear Agents API

Capabilities for AI agents to operate as first-class actors inside Linear - Agent Interaction Guidelines (AIG), signals, and best-practice patterns for interacting with users an...

GraphQL 1

Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.

GraphQL schemas published by this provider.

Linear GraphQL API

Single GraphQL endpoint exposing Linear's full data model - issues, projects, initiatives, cycles, teams, users, comments, documents, customers, customer requests, and more. Aut...

GRAPHQL

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Linear App Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

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

Features 13

The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.

Notable capabilities this provider offers.

GraphQL API at https://api.linear.app/graphql with full introspection
OAuth 2.0 with PKCE plus personal API key auth
Strongly-typed TypeScript SDK (v2.x) with webhook helpers
HMAC-SHA256 signed webhooks via Linear-Signature header
15+ webhook resource types (Issues, Projects, Initiatives, Cycles, Customers, etc.)
Apollo Studio playground for live schema exploration
Agents framework with Agent Interaction Guidelines
Native integrations with GitHub, Slack, Figma, Sentry, Zendesk
AI agent integrations including Codex, GitHub Copilot, Cursor
Triage inbox for routing intake into actionable issues
Diffs for structural code review visualization
Mobile apps for iOS and Android
25,000+ product teams using Linear

Scroll within the panel for all 13 ·

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

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

Linear App Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Linear App Vulnerability Disclosure

security.txt · contact published

SECURITY

Linear App Trust Center

SOC 2, ISO 27001, HIPAA, GDPR

SECURITY

Resources

Every other property we hold for Linear — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 2

Portal, sign-up, and the first successful call

Documentation 3

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Build 3

SDKs, sample code, and the tooling you integrate with

Learn 1

Tutorials, courses, talks, and written guidance

Operate 4

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Other 5

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/linear-app · machine-readable index on apis.io