# Linear

**Canonical:** https://apis.io/providers/linear-app/  
**Website:** https://linear.app  
**APIs profiled:** 4

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.

## Kin Score — 41.1 / 100 (developing)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 41.1).

| Facet | Score |
|---|---|
| Discoverability | 63.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 76.3 |
| Developer Ergonomics | 42.9 |
| Commercial Clarity | 81.6 |
| Access Clarity | 81.6 |

## Agent readiness — 16.7 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Free — onboarding: unknown, pricing: free, trial: no (confidence: medium).

## APIs (4)

- **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...

## Security (3)

- **Linear App Domain Security** — TLSv1.3 · HSTS · DMARC
- **Linear App Vulnerability Disclosure** — security.txt · contact published
- **Linear App Trust Center** — SOC 2, ISO 27001, HIPAA, GDPR

## Plans (1)

- **Linear App Plans Pricing**

## Tags

Project Management, Issue Tracking, Productivity, Software-as-a-Service, GraphQL, Developer Tools, Agents

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/linear-app/). Scores are computed from the provider's own public artifacts under a published rubric.