LINE website screenshot

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.

🌐 Visit website📡 Profile data on GitHub
74.5/100 exemplar ▬ flat Agent 48/100 agent native Front door AI 1/6 silent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →
AccessFreemiumSelf serveFree trial
9 published contracts 1 MCP Servers 4 Agent Skills
MessagingChatbotsSocial LoginMini AppsMarketingWebhookOpenID ConnectAudiencesAnalyticsJapan

What this lets a business do 3

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Application Communications
AE-150
Messaging API
POST /v2/bot/message/push POST /v2/bot/message/broadcast
Customer Relationship Management
BC-420
manage-audience
POST /v2/bot/audienceGroup/click
Developer Platform & API Ecosystem Management
BC-4270
channel-access-token
POST /oauth2/v2.1/token POST /oauth2/v2.1/revoke

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

LINE Messaging API Get the bot's webhook endpoint settings “What webhook URL is my LINE bot currently set to?” Set the bot's webhook endpoint URL “How do I change the webhook URL my bot receives events on?” Send a test event to a webhook endpoint “Can I check that my webhook server responds correctly before going live?” Reply to a user's event with messages “How do I answer a message a user just sent to my bot?”
LINE Manage Audience API Create an audience from a JSON list of user IDs “How do I create a new audience from a list of user IDs sent as JSON?” Add user IDs to an existing audience via JSON “How do I add more user IDs to an audience I already created, sending them as JSON?” Create a click-based retargeting audience “Can I build an audience of users who clicked a link in a message I sent?” Create an impression-based retargeting audience “How can I target users who opened a message I sent?”
LINE Channel Access Token API Issue a stateless channel access token “How do I get a stateless channel access token that isn't capped by the active token limit?” List valid channel access token key IDs “Which key IDs belong to my currently valid v2.1 channel access tokens?” Issue a v2.1 channel token with a JWT assertion “How do I issue a channel access token with an expiration date I choose?” Verify a v2.1 channel access token “Is my channel access token with a user-specified expiration still valid?”
LINE Insight API Get friend demographics for an Official Account “What are the age, gender and region breakdowns of my LINE Official Account's friends?” Count messages delivered on a given day “How many messages did my Official Account send in total on a specific day?” Count followers as of a date “How many users had added my Official Account as a friend by a certain date?” Get interaction stats for a broadcast or narrowcast “How did users interact with a narrowcast or broadcast message I sent?”
LINE Messaging API Blob API Download media a user sent “How do I download the image, video or audio a user sent to my bot?” Get a preview image of a sent image or video “Can I get a thumbnail preview of an image or video a user sent?” Check if a video or audio is ready to download “Is the video or audio a user sent ready to download yet?” Download a rich menu image “How do I download the image attached to a rich menu?”
LINE Liff API Create a LIFF app on a channel “How do I add a new LIFF app to my channel?” List all LIFF apps on a channel “Which LIFF apps are added to my LINE channel?” Update an existing LIFF app's settings “How do I change the endpoint URL of a LIFF app I already created?” Delete a LIFF app from a channel “How do I remove a LIFF app from my channel?”
LINE Module API Detach a module channel from an Official Account “How do I detach my module channel from a LINE Official Account?” Take chat control for a module channel “How can a standby module channel take over chat control of a conversation?” Release chat control back to the Primary Channel “How do I hand chat control back to the Primary Channel?” List bots with attached module channels “Which LINE Official Accounts have my module channel attached?”
LINE Manage Audience Blob API Create an audience from a file of user IDs “How do I create a new audience by uploading a file of user IDs?” Add user IDs to an audience from a file “How do I upload a file of more user IDs into an audience I already created?”
LINE Module Attach API Attach a module channel to an Official Account “How do I attach my module channel to a LINE Official Account after authorization?”
LINE Dummy API Receive LINE webhook events at a callback “What does a LINE webhook event payload sent to my bot look like?”
LINE Shop API Send a mission sticker to a user “How do I send a mission sticker to a LINE user?”

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0
Composite quality — 74.5/100 · exemplar
Contract Quality 10.7 / 19
Developer Ergonomics 12.1 / 15
Access Clarity 12.6 / 15
Operational Transparency 9.0 / 10
Contract Governance 3.8 / 9
Discoverability 5.8 / 8
Regulatory Posture 6.0 / 15
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 48/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 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
MCP Tool Quality 6 / 6
Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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Raise your score.
Agent readiness — checks not met, largest first (exact, from this profile):
  • A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
  • Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
  • Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
  • Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified)
  • Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
  • Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter
2 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
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/line/apis.yml: open an issue on github.com/api-evangelist/line 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.

MarketPositionDepthRegistered MCP serverDeclares compatibility
Workplace Collaboration App Marketplaces standard 25.5 - 1
Mobile SDK Publishers (Play SDK Index, CocoaPods, ADA certification) standard 25.5 - 1
Intercom App Store (customer-support, chat and messaging integrations) standard 25.5 - 1
IFTTT Services (service publishers) standard 25.5 - 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.

Standards implemented 4

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.

OpenID Connect
measured — observed by APIs.io (declared)
Model Context Protocol (MCP)
measured — observed by APIs.io (documented)
OpenAPI
measured — observed by APIs.io (published)
OAuth 2.0
measured — observed by APIs.io (declared)

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 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

LINE Messaging Channel API

OPEN COLLECTION

LINE Messaging Channel Info API

OPEN COLLECTION

LINE Messaging Channel Message API

OPEN COLLECTION

LINE Messaging Channel Profile API

OPEN COLLECTION

LINE Messaging API

OPEN COLLECTION

MCP Servers 1

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

MCP Server

MCP SERVER

Agent Skills 4

Packaged agent skills for driving this provider's APIs from an AI assistant.

line-issue-channel-access-token

AGENT SKILL

line-narrowcast-to-audience

AGENT SKILL

line-push-message-idempotently

AGENT SKILL

line-reply-to-webhook-event

AGENT SKILL

LINE API pricing

Prices published by LINE, read 2026-10-28 from developers.line.biz/en/docs/messaging-api/pricing/. A free plan or tier is listed.

PlanPrice
Communication Plan Free
Includes: Up to 200 free messages per month
Light Plan JPY 5,000
Includes: Up to 5,000 free messages per month
Standard Plan JPY 15,000
Includes: Up to 30,000 free messages per month

Plan details, limits and sources →

Rate limits

All 10 limits →

Billed by: messages · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Line Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Line Rate Limits

10 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

LINE

SLA

FinOps 1

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

Line Finops

FINOPS

Event 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...

ASYNCAPI

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

LINE — asyncapi rules

4 rules · 1 errors 2 warnings 1 info

SPECTRAL

LINE — line openapi rules

0 rules ·

SPECTRAL

OpenAPI 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 Api Phrasing Overlay

9 actions · phrasing · line-channel-access-token-api-openapi.yml

GENERATED

Line Channel Access Token Overlay

2 actions · documentation · line-channel-access-token-openapi.yml

DERIVED

Line Dummy Api Phrasing Overlay

2 actions · phrasing · line-dummy-api-openapi.yml

GENERATED

Line Insight Api Phrasing Overlay

8 actions · phrasing · line-insight-api-openapi.yml

GENERATED

Line Insight Overlay

3 actions · documentation · line-insight-openapi.yml

DERIVED

Line Liff Api Phrasing Overlay

5 actions · phrasing · line-liff-api-openapi.yml

GENERATED

Line Liff Overlay

3 actions · documentation · line-liff-openapi.yml

DERIVED

Line Line Module Api Phrasing Overlay

5 actions · phrasing · line-line-module-api-openapi.yml

GENERATED

Line Line Module Attach Api Phrasing Overlay

2 actions · phrasing · line-line-module-attach-api-openapi.yml

GENERATED

Line Manage Audience Api Phrasing Overlay

11 actions · phrasing · line-manage-audience-api-openapi.yml

GENERATED

Line Manage Audience Blob Api Phrasing Overlay

3 actions · phrasing · line-manage-audience-blob-api-openapi.yml

GENERATED

Line Manage Audience Overlay

3 actions · documentation · line-manage-audience-openapi.yml

DERIVED

Line Messaging Api Api Phrasing Overlay

69 actions · phrasing · line-messaging-api-api-openapi.yml

GENERATED

Line Messaging Api Blob Api Phrasing Overlay

6 actions · phrasing · line-messaging-api-blob-api-openapi.yml

GENERATED

Line Messaging Api Overlay

4 actions · documentation · line-messaging-api-openapi.yml

DERIVED

Line Module Attach Overlay

3 actions · documentation · line-module-attach-openapi.yml

DERIVED

Line Module Overlay

3 actions · documentation · line-module-openapi.yml

DERIVED

Line Shop Api Phrasing Overlay

2 actions · phrasing · line-shop-api-openapi.yml

GENERATED

Line Shop Overlay

3 actions · documentation · line-shop-openapi.yml

DERIVED

Line Webhook Overlay

2 actions · documentation · line-webhook-openapi.yml

DERIVED

Scroll for all 20

Security Posture 3

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

Line Authentication

http/oauth2/openIdConnect · 3 schemes

SECURITY

Line Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Line Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Line Scopes

3 scopes · authorization_code

3 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Line Agentic Access

111 operations · 59 acting · 4 human-in-the-loop

111 operations · 59 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox
Sandbox
 DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference
 OpenAPI Repository
OpenAPI Repository

Agent Surfaces 7

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 WellKnown
WellKnown
 MCPServer
MCPServer
 MCPServer
MCPServer
 AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt
 LlmsText
LlmsText

Scroll for all 7

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Components
Components
 Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel
 SpectralRules
SpectralRules

Scroll for all 8

Build 5

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs
 CLI
CLI
 ToolCrosswalk
ToolCrosswalk
 GitHubOrganization
GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes
 SecurityTxt
SecurityTxt

Operate 5

Status, limits, changes, and where to get help

RateLimits
RateLimits
 StatusPage
StatusPage
 Deprecation
Deprecation
 ChangeLog
ChangeLog
 Support
Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Other 10

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap
 Overlay
Overlay
 Overlay
Overlay
 Overlay
Overlay
 Overlay
Overlay
 Overlay
Overlay
 Overlay
Overlay
 Overlay
Overlay
 Overlay
Overlay
 Overlay
Overlay

Scroll for all 10

Source (apis.yml)

apis.yml Raw ↑ 
aid: line
name: LINE
description: 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.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: false
  public: true
  label: Self-serve signup, free tier metered on messages sent
  confidence: high
  source:
  - plans/line-plans-pricing.yml
  - authentication/line-authentication.yml
  generated: '2026-08-13'
  method: searched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/line.png
tags:
- Messaging
- Chatbots
- Social Login
- Mini Apps
- Marketing
- Webhook
- OpenID Connect
- Audiences
- Analytics
- Japan
tags_raw:
- Messaging
- Chatbots
- Social Login
- Mini Apps
- Marketing
- Webhooks
- OpenID Connect
- Audience
- Analytics
- Japan
url: https://raw.githubusercontent.com/api-evangelist/line/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-09-16'
specificationVersion: '0.23'
apis:
- aid: line:line-login-api
  name: LINE Login v2.1
  description: 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 endpoints are on api.line.me. ID tokens are ES256-signed
    JWTs with pairwise subject identifiers, PKCE is supported with S256 only, and JARM response modes (jwt, query.jwt, form_post.jwt)
    are accepted. Scopes are openid, profile and email. LINE publishes no OpenAPI for this surface — the machine-readable
    contract is the OIDC discovery document.
  humanURL: https://developers.line.biz/en/docs/line-login/
  baseURL: https://api.line.me
  tags:
  - Social Login
  - OpenID Connect
  - OAuth
  - Authentication
  tags_raw:
  - Social Login
  - OpenID Connect
  - OAuth
  - Authentication
  properties:
  - type: OpenIDConnect
    url: well-known/line-openid-configuration.json
  - type: OAuthScopes
    url: scopes/line-scopes.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/line-login/
  - type: APIReference
    url: https://developers.line.biz/en/reference/line-login/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/line-login/integrate-line-login/
- aid: line:line-channel-access-token-api
  name: LINE Channel Access Token API
  description: The channel-access-token API from LINE — 8 operation(s) for channel-access-token.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - channel-access-token
  properties:
  - type: OpenAPI
    url: openapi/line-channel-access-token-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-dummy-api
  name: LINE Dummy API
  description: The dummy API from LINE — 1 operation(s) for dummy.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - dummy
  properties:
  - type: OpenAPI
    url: openapi/line-dummy-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-insight-api
  name: LINE Insight API
  description: The insight API from LINE — 7 operation(s) for insight.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - Insight
  tags_raw:
  - insight
  properties:
  - type: OpenAPI
    url: openapi/line-insight-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-liff-api
  name: LINE Liff API
  description: The liff API from LINE — 2 operation(s) for liff.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - liff
  properties:
  - type: OpenAPI
    url: openapi/line-liff-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-line-module-api
  name: LINE Module API
  description: The line-module API from LINE — 4 operation(s) for line-module.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - line-module
  properties:
  - type: OpenAPI
    url: openapi/line-line-module-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-line-module-attach-api
  name: LINE Module Attach API
  description: The line-module-attach API from LINE — 1 operation(s) for line-module-attach.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - line-module-attach
  properties:
  - type: OpenAPI
    url: openapi/line-line-module-attach-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-manage-audience-api
  name: LINE Manage Audience API
  description: The manage-audience API from LINE — 8 operation(s) for manage-audience.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - manage-audience
  properties:
  - type: OpenAPI
    url: openapi/line-manage-audience-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-manage-audience-blob-api
  name: LINE Manage Audience Blob API
  description: The manage-audience-blob API from LINE — 1 operation(s) for manage-audience-blob.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - manage-audience-blob
  properties:
  - type: OpenAPI
    url: openapi/line-manage-audience-blob-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-messaging-api-api
  name: LINE Messaging API
  description: The messaging-api API from LINE — 61 operation(s) for messaging-api.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - Messaging API
  tags_raw:
  - messaging-api
  properties:
  - type: OpenAPI
    url: openapi/line-messaging-api-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-messaging-api-blob-api
  name: LINE Messaging API Blob API
  description: The messaging-api-blob API from LINE — 4 operation(s) for messaging-api-blob.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - messaging-api-blob
  properties:
  - type: OpenAPI
    url: openapi/line-messaging-api-blob-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
- aid: line:line-shop-api
  name: LINE Shop API
  description: The shop API from LINE — 1 operation(s) for shop.
  humanURL: https://developers.line.biz/en/docs/messaging-api/
  baseURL: https://api.line.me
  tags:
  - Shop
  tags_raw:
  - shop
  properties:
  - type: OpenAPI
    url: openapi/line-shop-api-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/
  - type: GettingStarted
    url: https://developers.line.biz/en/docs/messaging-api/getting-started/
  - type: AsyncAPI
    url: asyncapi/line-messaging-webhook.yml
  - type: Webhooks
    url: openapi/_original/line-webhook-openapi.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/messaging-api/receiving-messages/
  - type: Spectral
    url: rules/line-asyncapi-spectral-rules.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/basics/channel-access-token/
  - type: Authentication
    url: authentication/line-authentication.yml
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#get-insight
  - type: APIReference
    url: https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
  - type: APIReference
    url: https://developers.line.biz/en/reference/liff-server/
  - type: Documentation
    url: https://developers.line.biz/en/docs/liff/
  - type: CLI
    url: cli/line-cli.yml
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
  - type: Documentation
    url: https://developers.line.biz/en/docs/partner-docs/mission-stickers/
common:
- type: CapabilityMap
  url: capabilities/line-capability-edges.yml
  name: LINE Business Capability Map
- type: Overlay
  url: overlays/line-messaging-api-overlay.yaml
- type: Overlay
  url: overlays/line-webhook-overlay.yaml
- type: Overlay
  url: overlays/line-channel-access-token-overlay.yaml
- type: Overlay
  url: overlays/line-insight-overlay.yaml
- type: Overlay
  url: overlays/line-manage-audience-overlay.yaml
- type: Overlay
  url: overlays/line-liff-overlay.yaml
- type: Overlay
  url: overlays/line-module-overlay.yaml
- type: Overlay
  url: overlays/line-module-attach-overlay.yaml
- type: Overlay
  url: overlays/line-shop-overlay.yaml
- type: AgenticAccess
  url: agentic-access/line-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/line-vulnerability-disclosure.yml
- type: Security
  url: security/line-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/line-domain-security.yml
- type: Authentication
  url: authentication/line-authentication.yml
- type: OAuthScopes
  url: scopes/line-scopes.yml
- type: Packages
  url: packages/line-packages.yml
- type: SDKs
  url: packages/line-packages.yml
- type: CLI
  url: cli/line-cli.yml
- type: Components
  url: components/line-components.yml
- type: Sandbox
  url: sandbox/line-sandbox.yml
- type: Conventions
  url: conventions/line-conventions.yml
- type: Idempotency
  url: conventions/line-conventions.yml
- type: ErrorCatalog
  url: errors/line-problem-types.yml
- type: RateLimits
  url: rate-limits/line-rate-limits.yml
- type: Plans
  url: plans/line-plans-pricing.yml
- type: Lifecycle
  url: lifecycle/line-lifecycle.yml
- type: StatusPage
  url: https://api.line-status.info/
- type: Deprecation
  url: lifecycle/line-lifecycle.yml
- type: ChangeLog
  url: changelog/line-changelog.yml
- type: Conformance
  url: conformance/line-conformance.yml
- type: DataModel
  url: data-model/line-data-model.yml
- type: WellKnown
  url: well-known/line-well-known.yml
- type: SecurityTxt
  url: well-known/line-security.txt
- type: MCPServer
  name: MCP Server
  url: https://github.com/line/line-bot-mcp-server
- type: MCPServer
  name: MCP Server manifest
  url: mcp/line-mcp.yml
- type: ToolCrosswalk
  url: mcp/line-tool-crosswalk.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/line-llms.txt
- type: LlmsText
  url: https://developers.line.biz/llms.txt
- type: LinkedIn
  url: https://www.linkedin.com/company/linecorp
- type: Website
  url: https://line.me
- type: DeveloperPortal
  url: https://developers.line.biz/en/
- type: Documentation
  url: https://developers.line.biz/en/docs/
- type: APIReference
  url: https://developers.line.biz/en/reference/messaging-api/
- type: GettingStarted
  url: https://developers.line.biz/en/docs/messaging-api/getting-started/
- type: Support
  url: https://developers.line.biz/en/faq/
- type: Blog
  url: https://techblog.lycorp.co.jp/en/
- type: OpenAPI Repository
  url: https://github.com/line/line-openapi
- type: GitHubOrganization
  url: https://github.com/line
- type: SignUp
  url: https://developers.line.biz/console/
- type: Pricing
  url: https://developers.line.biz/en/docs/messaging-api/pricing/
- type: TermsOfService
  url: https://developers.line.biz/en/terms-and-policies/
- type: PrivacyPolicy
  url: https://www.lycorp.co.jp/en/company/privacypolicy/
- type: SpectralRules
  url: https://github.com/line/line-openapi/blob/fa5577c9ea874d2dbd8fadc85a4cb3a1b29d8cbe/.spectral.yaml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 42
  pass: local-v1

LINE API — frequently asked questions

Does LINE have an API?

Yes. APIs.io lists 12 APIs from LINE, including LINE Login v2.1, LINE Channel Access Token API and LINE Dummy API, and 9 more.

Is there an OpenAPI specification for the LINE API?

Yes. APIs.io indexes 11 OpenAPI specifications for LINE, each linked for download from this page.

How do I authenticate with the LINE API?

LINE documents its authentication (http/oauth2/openIdConnect · 3 schemes). The details are profiled on APIs.io as Line Authentication.

How much does the LINE API cost?

LINE publishes its prices; its Light Plan plan is JPY 5,000 as of 2026-10-28. APIs.io lists 3 pricing plans for LINE, with each plan's price, limits and inclusions under Pricing on this page.

Does LINE have an MCP server?

Yes. APIs.io lists 1 MCP server for LINE.

Is the LINE API ready for AI agents?

LINE has a Kin Score of 74.5 out of 100 (exemplar) and an Agent Readiness score of 47.9 (agent-native), scored by API Evangelist on 2026-11-06.

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.
All 92 tools →

Call it yourself

curl for this page
This provider 
curl "https://apis.io/api/v1/providers/line"
All providers 
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose 
curl "https://apis.io/api/v1/providers/line/operations?limit=25"
How their score was established 
curl "https://apis.io/api/v1/providers/line/evidence"

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