LINE
LINE is a Japan-based messaging platform operated by LY Corporation, with over 200 million monthly active users across Japan, Taiwan, Thailand and Indonesia, offering messaging, payments, news and a broad ecosystem of services. The LINE Developers platform exposes public APIs for building chatbots and Official Accounts (Messaging API), issuing and rotating credentials (Channel Access Token API), reading delivery and audience analytics (Insight API), building marketing audiences (Manage Audience API), running web apps inside the LINE client (LIFF), and social login via LINE Login v2.1 over OAuth 2.0 and OpenID Connect. LINE publishes nine first-party OpenAPI documents covering 111 operations at github.com/line/line-openapi and generates all six official server SDKs from them. Server API calls authenticate with a channel access token presented as an HTTP Bearer credential and scoped to a single LINE channel.
LINE publishes 12 API contracts indexed on the APIs.io network, including Channel Access Token API, Dummy API, Insight API, and 9 more. Tagged areas include Messaging, Chatbots, Social Login, Mini Apps, and Marketing.
The LINE catalog on APIs.io includes 1 event-driven AsyncAPI specification and 2 Spectral governance rulesets.
LINE’s developer surface includes authentication, CLI, sandbox, changelog, documentation, API reference, getting-started guide, and 48 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
What people ask LINE 11
The questions people put to an LLM, and the jobs they hand an agent, that LINE's APIs answer — each one linked to the operation that does it. Generated by API Evangelist
Kin Score
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 |
|---|---|---|---|---|
| Workplace Collaboration App Marketplaces | standard | 19.7 (thin) | - | - |
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.
APIs 12
Individual APIs this provider publishes, each with its own machine-readable definition.
LINE Login v2.1
End-user authentication and authorization over OAuth 2.0 authorization code grant and OpenID Connect. Authorization runs at access.line.me; token, userinfo, revocation and JWKS ...
LINE Channel Access Token API
The channel-access-token API from LINE — 8 operation(s) for channel-access-token.
LINE Dummy API
The dummy API from LINE — 1 operation(s) for dummy.
LINE Insight API
The insight API from LINE — 7 operation(s) for insight.
LINE Liff API
The liff API from LINE — 2 operation(s) for liff.
LINE Module API
The line-module API from LINE — 4 operation(s) for line-module.
LINE Module Attach API
The line-module-attach API from LINE — 1 operation(s) for line-module-attach.
LINE Manage Audience API
The manage-audience API from LINE — 8 operation(s) for manage-audience.
LINE Manage Audience Blob API
The manage-audience-blob API from LINE — 1 operation(s) for manage-audience-blob.
LINE Messaging API
The messaging-api API from LINE — 61 operation(s) for messaging-api.
LINE Messaging API Blob API
The messaging-api-blob API from LINE — 4 operation(s) for messaging-api-blob.
LINE Shop API
The shop API from LINE — 1 operation(s) for shop.
Scroll for all 12
Open Collections 6
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONLINE Messaging Channel API
OPEN COLLECTIONLINE Messaging Channel Info API
OPEN COLLECTIONLINE Messaging Channel Message API
OPEN COLLECTIONLINE Messaging Channel Profile API
OPEN COLLECTIONLINE Messaging API
OPEN COLLECTIONMCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
MCP Server
MCP SERVERPricing Plans 1
Published pricing tiers and plan structures.
Line Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Line Rate Limits
RATE LIMITSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
LINE Messaging Webhook Event Surface
AsyncAPI description of the webhook event surface published by the LINE Messaging API to bot servers. The Messaging API delivers webhook events as HTTPS POST requests to the con...
ASYNCAPISpectral Rules 2
Spectral governance rulesets for linting and validating these APIs.
LINE — asyncapi rules
SPECTRALLINE — line openapi rules
SPECTRALOpenAPI Overlays 20
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Line Channel Access Token Overlay
GENERATEDLine Dummy Api Phrasing Overlay
GENERATEDLine Insight Api Phrasing Overlay
GENERATEDLine Insight Overlay
GENERATEDLine Liff Api Phrasing Overlay
GENERATEDLine Liff Overlay
GENERATEDLine Line Module Api Phrasing Overlay
GENERATEDLine Manage Audience Overlay
GENERATEDLine Messaging Api Api Phrasing Overlay
GENERATEDLine Messaging Api Overlay
GENERATEDLine Module Attach Overlay
GENERATEDLine Module Overlay
GENERATEDLine Shop Api Phrasing Overlay
GENERATEDLine Shop Overlay
GENERATEDLine Webhook Overlay
GENERATEDScroll for all 20
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 4
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 7
MCP servers, agent skills, and machine-readable catalogs
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Design & Contract 8
Pagination, idempotency, versioning, errors, and events
Scroll for all 8
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 10
Properties that don't map to a standard resource type
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Source (apis.yml)
Work with this as data
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